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Updates for 4.14:

Browse Source 
- Write unmount record for a ro mount to avoid unnecessary log replay
 - Clean up orphaned inodes when mounting fs readonly
 - Resubmit inode log items when buffer writeback fails to avoid umount hang
 - Fix log recovery corruption problems when log headers wrap around the end
 - Avoid infinite loop searching for free inodes when inode counters are wrong
 - Evict inodes involved with log redo so that we don't leak them later
 - Fix a potential race between reclaim and inode cluster freeing
 - Refactor the inode joining code w.r.t. transaction rolling & deferred ops
 - Fix a bug where the log doesn't properly deal with dirty buffers that
   are about to become ordered buffers
 - Fix the extent swap code to deal with making dirty buffers ordered properly
 - Consolidate page fault handlers
 - Refactor the incore extent manipulation functions to use the iext
   abstractions instead of directly modifying with extent data
 - Disable crashy chattr +/-x until we fix it
 - Don't allow us to set S_DAX for v2 inodes
 - Various cleanups
 - Clarify some documentation
 - Fix a problem where fsync and a log commit race to send the disk a
   flush command, resulting in a small window where power fail data loss
   could occur
 - Simplify some rmap operations in the fcollapse code
 - Fix some use-after-free problems in async writeback
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Merge tag 'xfs-4.14-merge-7' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux

Pull XFS updates from Darrick Wong:
 "Here are the changes for xfs for 4.14. Most of these are cleanups and
  fixes for bad behavior, as we're mostly focusing on improving
  reliablity this cycle (read: there's potentially a lot of stuff on the
  horizon for 4.15 so better to spend a few weeks killing other bugs
  now).

  Summary:

   - Write unmount record for a ro mount to avoid unnecessary log replay

   - Clean up orphaned inodes when mounting fs readonly

   - Resubmit inode log items when buffer writeback fails to avoid
     umount hang

   - Fix log recovery corruption problems when log headers wrap around
     the end

   - Avoid infinite loop searching for free inodes when inode counters
     are wrong

   - Evict inodes involved with log redo so that we don't leak them
     later

   - Fix a potential race between reclaim and inode cluster freeing

   - Refactor the inode joining code w.r.t. transaction rolling &
     deferred ops

   - Fix a bug where the log doesn't properly deal with dirty buffers
     that are about to become ordered buffers

   - Fix the extent swap code to deal with making dirty buffers ordered
     properly

   - Consolidate page fault handlers

   - Refactor the incore extent manipulation functions to use the iext
     abstractions instead of directly modifying with extent data

   - Disable crashy chattr +/-x until we fix it

   - Don't allow us to set S_DAX for v2 inodes

   - Various cleanups

   - Clarify some documentation

   - Fix a problem where fsync and a log commit race to send the disk a
     flush command, resulting in a small window where power fail data
     loss could occur

   - Simplify some rmap operations in the fcollapse code

   - Fix some use-after-free problems in async writeback"

* tag 'xfs-4.14-merge-7' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux: (44 commits)
  xfs: use kmem_free to free return value of kmem_zalloc
  xfs: open code end_buffer_async_write in xfs_finish_page_writeback
  xfs: don't set v3 xflags for v2 inodes
  xfs: fix compiler warnings
  fsmap: fix documentation of FMR_OF_LAST
  xfs: simplify the rmap code in xfs_bmse_merge
  xfs: remove unused flags arg from xfs_file_iomap_begin_delay
  xfs: fix incorrect log_flushed on fsync
  xfs: disable per-inode DAX flag
  xfs: replace xfs_qm_get_rtblks with a direct call to xfs_bmap_count_leaves
  xfs: rewrite xfs_bmap_count_leaves using xfs_iext_get_extent
  xfs: use xfs_iext_*_extent helpers in xfs_bmap_split_extent_at
  xfs: use xfs_iext_*_extent helpers in xfs_bmap_shift_extents
  xfs: move some code around inside xfs_bmap_shift_extents
  xfs: use xfs_iext_get_extent in xfs_bmap_first_unused
  xfs: switch xfs_bmap_local_to_extents to use xfs_iext_insert
  xfs: add a xfs_iext_update_extent helper
  xfs: consolidate the various page fault handlers
  iomap: return VM_FAULT_* codes from iomap_page_mkwrite
  xfs: relog dirty buffers during swapext bmbt owner change
  ...
This commit is contained in:
Linus Torvalds 2017-09-06 12:19:23 -07:00
commit 5791577963
50 changed files with 1043 additions and 725 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
fs/inode.c
View File

@ -637,6 +637,7 @@ again:
dispose_list(&dispose);
}
EXPORT_SYMBOL_GPL(evict_inodes);
/**
* invalidate_inodes - attempt to free all inodes on a superblock

1
fs/internal.h
View File

@ -132,7 +132,6 @@ static inline bool atime_needs_update_rcu(const struct path *path,
extern void inode_io_list_del(struct inode *inode);
extern long get_nr_dirty_inodes(void);
extern void evict_inodes(struct super_block *);
extern int invalidate_inodes(struct super_block *, bool);
/*

4
fs/iomap.c
View File

@ -477,10 +477,10 @@ int iomap_page_mkwrite(struct vm_fault *vmf, const struct iomap_ops *ops)
set_page_dirty(page);
wait_for_stable_page(page);
return 0;
return VM_FAULT_LOCKED;
out_unlock:
unlock_page(page);
return ret;
return block_page_mkwrite_return(ret);
}
EXPORT_SYMBOL_GPL(iomap_page_mkwrite);

156
fs/xfs/libxfs/xfs_attr.c
View File

@ -328,20 +328,19 @@ xfs_attr_set(
*/
xfs_defer_init(args.dfops, args.firstblock);
error = xfs_attr_shortform_to_leaf(&args);
if (!error)
error = xfs_defer_finish(&args.trans, args.dfops, dp);
if (error) {
args.trans = NULL;
xfs_defer_cancel(&dfops);
goto out;
}
if (error)
goto out_defer_cancel;
xfs_defer_ijoin(args.dfops, dp);
error = xfs_defer_finish(&args.trans, args.dfops);
if (error)
goto out_defer_cancel;
/*
* Commit the leaf transformation. We'll need another (linked)
* transaction to add the new attribute to the leaf.
*/
error = xfs_trans_roll(&args.trans, dp);
error = xfs_trans_roll_inode(&args.trans, dp);
if (error)
goto out;
@ -373,6 +372,9 @@ xfs_attr_set(
return error;
out_defer_cancel:
xfs_defer_cancel(&dfops);
args.trans = NULL;
out:
if (args.trans)
xfs_trans_cancel(args.trans);
@ -593,19 +595,18 @@ xfs_attr_leaf_addname(xfs_da_args_t *args)
*/
xfs_defer_init(args->dfops, args->firstblock);
error = xfs_attr3_leaf_to_node(args);
if (!error)
error = xfs_defer_finish(&args->trans, args->dfops, dp);
if (error) {
args->trans = NULL;
xfs_defer_cancel(args->dfops);
return error;
}
if (error)
goto out_defer_cancel;
xfs_defer_ijoin(args->dfops, dp);
error = xfs_defer_finish(&args->trans, args->dfops);
if (error)
goto out_defer_cancel;
/*
* Commit the current trans (including the inode) and start
* a new one.
*/
error = xfs_trans_roll(&args->trans, dp);
error = xfs_trans_roll_inode(&args->trans, dp);
if (error)
return error;
@ -620,7 +621,7 @@ xfs_attr_leaf_addname(xfs_da_args_t *args)
* Commit the transaction that added the attr name so that
* later routines can manage their own transactions.
*/
error = xfs_trans_roll(&args->trans, dp);
error = xfs_trans_roll_inode(&args->trans, dp);
if (error)
return error;
@ -684,20 +685,18 @@ xfs_attr_leaf_addname(xfs_da_args_t *args)
xfs_defer_init(args->dfops, args->firstblock);
error = xfs_attr3_leaf_to_shortform(bp, args, forkoff);
/* bp is gone due to xfs_da_shrink_inode */
if (!error)
error = xfs_defer_finish(&args->trans,
args->dfops, dp);
if (error) {
args->trans = NULL;
xfs_defer_cancel(args->dfops);
return error;
}
if (error)
goto out_defer_cancel;
xfs_defer_ijoin(args->dfops, dp);
error = xfs_defer_finish(&args->trans, args->dfops);
if (error)
goto out_defer_cancel;
}
/*
* Commit the remove and start the next trans in series.
*/
error = xfs_trans_roll(&args->trans, dp);
error = xfs_trans_roll_inode(&args->trans, dp);
} else if (args->rmtblkno > 0) {
/*
@ -706,6 +705,10 @@ xfs_attr_leaf_addname(xfs_da_args_t *args)
error = xfs_attr3_leaf_clearflag(args);
}
return error;
out_defer_cancel:
xfs_defer_cancel(args->dfops);
args->trans = NULL;
return error;
}
/*
@ -747,15 +750,18 @@ xfs_attr_leaf_removename(xfs_da_args_t *args)
xfs_defer_init(args->dfops, args->firstblock);
error = xfs_attr3_leaf_to_shortform(bp, args, forkoff);
/* bp is gone due to xfs_da_shrink_inode */
if (!error)
error = xfs_defer_finish(&args->trans, args->dfops, dp);
if (error) {
args->trans = NULL;
xfs_defer_cancel(args->dfops);
return error;
}
if (error)
goto out_defer_cancel;
xfs_defer_ijoin(args->dfops, dp);
error = xfs_defer_finish(&args->trans, args->dfops);
if (error)
goto out_defer_cancel;
}
return 0;
out_defer_cancel:
xfs_defer_cancel(args->dfops);
args->trans = NULL;
return error;
}
/*
@ -872,20 +878,18 @@ restart:
state = NULL;
xfs_defer_init(args->dfops, args->firstblock);
error = xfs_attr3_leaf_to_node(args);
if (!error)
error = xfs_defer_finish(&args->trans,
args->dfops, dp);
if (error) {
args->trans = NULL;
xfs_defer_cancel(args->dfops);
goto out;
}
if (error)
goto out_defer_cancel;
xfs_defer_ijoin(args->dfops, dp);
error = xfs_defer_finish(&args->trans, args->dfops);
if (error)
goto out_defer_cancel;
/*
* Commit the node conversion and start the next
* trans in the chain.
*/
error = xfs_trans_roll(&args->trans, dp);
error = xfs_trans_roll_inode(&args->trans, dp);
if (error)
goto out;
@ -900,13 +904,12 @@ restart:
*/
xfs_defer_init(args->dfops, args->firstblock);
error = xfs_da3_split(state);
if (!error)
error = xfs_defer_finish(&args->trans, args->dfops, dp);
if (error) {
args->trans = NULL;
xfs_defer_cancel(args->dfops);
goto out;
}
if (error)
goto out_defer_cancel;
xfs_defer_ijoin(args->dfops, dp);
error = xfs_defer_finish(&args->trans, args->dfops);
if (error)
goto out_defer_cancel;
} else {
/*
* Addition succeeded, update Btree hashvals.
@ -925,7 +928,7 @@ restart:
* Commit the leaf addition or btree split and start the next
* trans in the chain.
*/
error = xfs_trans_roll(&args->trans, dp);
error = xfs_trans_roll_inode(&args->trans, dp);
if (error)
goto out;
@ -999,20 +1002,18 @@ restart:
if (retval && (state->path.active > 1)) {
xfs_defer_init(args->dfops, args->firstblock);
error = xfs_da3_join(state);
if (!error)
error = xfs_defer_finish(&args->trans,
args->dfops, dp);
if (error) {
args->trans = NULL;
xfs_defer_cancel(args->dfops);
goto out;
}
if (error)
goto out_defer_cancel;
xfs_defer_ijoin(args->dfops, dp);
error = xfs_defer_finish(&args->trans, args->dfops);
if (error)
goto out_defer_cancel;
}
/*
* Commit and start the next trans in the chain.
*/
error = xfs_trans_roll(&args->trans, dp);
error = xfs_trans_roll_inode(&args->trans, dp);
if (error)
goto out;
@ -1032,6 +1033,10 @@ out:
if (error)
return error;
return retval;
out_defer_cancel:
xfs_defer_cancel(args->dfops);
args->trans = NULL;
goto out;
}
/*
@ -1122,17 +1127,16 @@ xfs_attr_node_removename(xfs_da_args_t *args)
if (retval && (state->path.active > 1)) {
xfs_defer_init(args->dfops, args->firstblock);
error = xfs_da3_join(state);
if (!error)
error = xfs_defer_finish(&args->trans, args->dfops, dp);
if (error) {
args->trans = NULL;
xfs_defer_cancel(args->dfops);
goto out;
}
if (error)
goto out_defer_cancel;
xfs_defer_ijoin(args->dfops, dp);
error = xfs_defer_finish(&args->trans, args->dfops);
if (error)
goto out_defer_cancel;
/*
* Commit the Btree join operation and start a new trans.
*/
error = xfs_trans_roll(&args->trans, dp);
error = xfs_trans_roll_inode(&args->trans, dp);
if (error)
goto out;
}
@ -1156,14 +1160,12 @@ xfs_attr_node_removename(xfs_da_args_t *args)
xfs_defer_init(args->dfops, args->firstblock);
error = xfs_attr3_leaf_to_shortform(bp, args, forkoff);
/* bp is gone due to xfs_da_shrink_inode */
if (!error)
error = xfs_defer_finish(&args->trans,
args->dfops, dp);
if (error) {
args->trans = NULL;
xfs_defer_cancel(args->dfops);
goto out;
}
if (error)
goto out_defer_cancel;
xfs_defer_ijoin(args->dfops, dp);
error = xfs_defer_finish(&args->trans, args->dfops);
if (error)
goto out_defer_cancel;
} else
xfs_trans_brelse(args->trans, bp);
}
@ -1172,6 +1174,10 @@ xfs_attr_node_removename(xfs_da_args_t *args)
out:
xfs_da_state_free(state);
return error;
out_defer_cancel:
xfs_defer_cancel(args->dfops);
args->trans = NULL;
goto out;
}
/*

6
fs/xfs/libxfs/xfs_attr_leaf.c
View File

@ -2608,7 +2608,7 @@ xfs_attr3_leaf_clearflag(
/*
* Commit the flag value change and start the next trans in series.
*/
return xfs_trans_roll(&args->trans, args->dp);
return xfs_trans_roll_inode(&args->trans, args->dp);
}
/*
@ -2659,7 +2659,7 @@ xfs_attr3_leaf_setflag(
/*
* Commit the flag value change and start the next trans in series.
*/
return xfs_trans_roll(&args->trans, args->dp);
return xfs_trans_roll_inode(&args->trans, args->dp);
}
/*
@ -2777,7 +2777,7 @@ xfs_attr3_leaf_flipflags(
/*
* Commit the flag value change and start the next trans in series.
*/
error = xfs_trans_roll(&args->trans, args->dp);
error = xfs_trans_roll_inode(&args->trans, args->dp);
return error;
}

39
fs/xfs/libxfs/xfs_attr_remote.c
View File

@ -467,13 +467,12 @@ xfs_attr_rmtval_set(
error = xfs_bmapi_write(args->trans, dp, (xfs_fileoff_t)lblkno,
blkcnt, XFS_BMAPI_ATTRFORK, args->firstblock,
args->total, &map, &nmap, args->dfops);
if (!error)
error = xfs_defer_finish(&args->trans, args->dfops, dp);
if (error) {
args->trans = NULL;
xfs_defer_cancel(args->dfops);
return error;
}
if (error)
goto out_defer_cancel;
xfs_defer_ijoin(args->dfops, dp);
error = xfs_defer_finish(&args->trans, args->dfops);
if (error)
goto out_defer_cancel;
ASSERT(nmap == 1);
ASSERT((map.br_startblock != DELAYSTARTBLOCK) &&
@ -484,7 +483,7 @@ xfs_attr_rmtval_set(
/*
* Start the next trans in the chain.
*/
error = xfs_trans_roll(&args->trans, dp);
error = xfs_trans_roll_inode(&args->trans, dp);
if (error)
return error;
}
@ -539,6 +538,10 @@ xfs_attr_rmtval_set(
}
ASSERT(valuelen == 0);
return 0;
out_defer_cancel:
xfs_defer_cancel(args->dfops);
args->trans = NULL;
return error;
}
/*
@ -609,21 +612,23 @@ xfs_attr_rmtval_remove(
error = xfs_bunmapi(args->trans, args->dp, lblkno, blkcnt,
XFS_BMAPI_ATTRFORK, 1, args->firstblock,
args->dfops, &done);
if (!error)
error = xfs_defer_finish(&args->trans, args->dfops,
args->dp);
if (error) {
args->trans = NULL;
xfs_defer_cancel(args->dfops);
return error;
}
if (error)
goto out_defer_cancel;
xfs_defer_ijoin(args->dfops, args->dp);
error = xfs_defer_finish(&args->trans, args->dfops);
if (error)
goto out_defer_cancel;
/*
* Close out trans and start the next one in the chain.
*/
error = xfs_trans_roll(&args->trans, args->dp);
error = xfs_trans_roll_inode(&args->trans, args->dp);
if (error)
return error;
}
return 0;
out_defer_cancel:
xfs_defer_cancel(args->dfops);
args->trans = NULL;
return error;
}

284
fs/xfs/libxfs/xfs_bmap.c
View File

@ -579,7 +579,7 @@ xfs_bmap_validate_ret(
#else
#define xfs_bmap_check_leaf_extents(cur, ip, whichfork) do { } while (0)
#define xfs_bmap_validate_ret(bno,len,flags,mval,onmap,nmap)
#define xfs_bmap_validate_ret(bno,len,flags,mval,onmap,nmap) do { } while (0)
#endif /* DEBUG */
/*
@ -880,7 +880,7 @@ xfs_bmap_local_to_extents(
xfs_ifork_t *ifp; /* inode fork pointer */
xfs_alloc_arg_t args; /* allocation arguments */
xfs_buf_t *bp; /* buffer for extent block */
xfs_bmbt_rec_host_t *ep; /* extent record pointer */
struct xfs_bmbt_irec rec;
/*
* We don't want to deal with the case of keeping inode data inline yet.
@ -943,9 +943,12 @@ xfs_bmap_local_to_extents(
xfs_bmap_local_to_extents_empty(ip, whichfork);
flags |= XFS_ILOG_CORE;
xfs_iext_add(ifp, 0, 1);
ep = xfs_iext_get_ext(ifp, 0);
xfs_bmbt_set_allf(ep, 0, args.fsbno, 1, XFS_EXT_NORM);
rec.br_startoff = 0;
rec.br_startblock = args.fsbno;
rec.br_blockcount = 1;
rec.br_state = XFS_EXT_NORM;
xfs_iext_insert(ip, 0, 1, &rec, 0);
trace_xfs_bmap_post_update(ip, 0,
whichfork == XFS_ATTR_FORK ? BMAP_ATTRFORK : 0,
_THIS_IP_);
@ -1196,7 +1199,7 @@ xfs_bmap_add_attrfork(
xfs_log_sb(tp);
}
error = xfs_defer_finish(&tp, &dfops, NULL);
error = xfs_defer_finish(&tp, &dfops);
if (error)
goto bmap_cancel;
error = xfs_trans_commit(tp);
@ -1356,7 +1359,6 @@ xfs_bmap_first_unused(
xfs_fileoff_t lastaddr; /* last block number seen */
xfs_fileoff_t lowest; /* lowest useful block */
xfs_fileoff_t max; /* starting useful block */
xfs_fileoff_t off; /* offset for this block */
xfs_extnum_t nextents; /* number of extent entries */
ASSERT(XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_BTREE ||
@ -1373,16 +1375,19 @@ xfs_bmap_first_unused(
lowest = *first_unused;
nextents = xfs_iext_count(ifp);
for (idx = 0, lastaddr = 0, max = lowest; idx < nextents; idx++) {
xfs_bmbt_rec_host_t *ep = xfs_iext_get_ext(ifp, idx);
off = xfs_bmbt_get_startoff(ep);
struct xfs_bmbt_irec got;
xfs_iext_get_extent(ifp, idx, &got);
/*
* See if the hole before this extent will work.
*/
if (off >= lowest + len && off - max >= len) {
if (got.br_startoff >= lowest + len &&
got.br_startoff - max >= len) {
*first_unused = max;
return 0;
}
lastaddr = off + xfs_bmbt_get_blockcount(ep);
lastaddr = got.br_startoff + got.br_blockcount;
max = XFS_FILEOFF_MAX(lastaddr, lowest);
}
*first_unused = max;
@ -4918,7 +4923,7 @@ xfs_bmap_del_extent_delay(
da_new = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(ip,
got->br_blockcount), da_old);
got->br_startblock = nullstartblock((int)da_new);
xfs_bmbt_set_all(xfs_iext_get_ext(ifp, *idx), got);
xfs_iext_update_extent(ifp, *idx, got);
trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_);
break;
case BMAP_RIGHT_CONTIG:
@ -4930,7 +4935,7 @@ xfs_bmap_del_extent_delay(
da_new = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(ip,
got->br_blockcount), da_old);
got->br_startblock = nullstartblock((int)da_new);
xfs_bmbt_set_all(xfs_iext_get_ext(ifp, *idx), got);
xfs_iext_update_extent(ifp, *idx, got);
trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_);
break;
case 0:
@ -4956,7 +4961,7 @@ xfs_bmap_del_extent_delay(
del->br_blockcount);
got->br_startblock = nullstartblock((int)got_indlen);
xfs_bmbt_set_all(xfs_iext_get_ext(ifp, *idx), got);
xfs_iext_update_extent(ifp, *idx, got);
trace_xfs_bmap_post_update(ip, *idx, 0, _THIS_IP_);
new.br_startoff = del_endoff;
@ -5026,7 +5031,7 @@ xfs_bmap_del_extent_cow(
got->br_startoff = del_endoff;
got->br_blockcount -= del->br_blockcount;
got->br_startblock = del->br_startblock + del->br_blockcount;
xfs_bmbt_set_all(xfs_iext_get_ext(ifp, *idx), got);
xfs_iext_update_extent(ifp, *idx, got);
trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_);
break;
case BMAP_RIGHT_CONTIG:
@ -5035,7 +5040,7 @@ xfs_bmap_del_extent_cow(
*/
trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_);
got->br_blockcount -= del->br_blockcount;
xfs_bmbt_set_all(xfs_iext_get_ext(ifp, *idx), got);
xfs_iext_update_extent(ifp, *idx, got);
trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_);
break;
case 0:
@ -5044,7 +5049,7 @@ xfs_bmap_del_extent_cow(
*/
trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_);
got->br_blockcount = del->br_startoff - got->br_startoff;
xfs_bmbt_set_all(xfs_iext_get_ext(ifp, *idx), got);
xfs_iext_update_extent(ifp, *idx, got);
trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_);
new.br_startoff = del_endoff;
@ -5876,32 +5881,26 @@ xfs_bmse_merge(
int whichfork,
xfs_fileoff_t shift, /* shift fsb */
int current_ext, /* idx of gotp */
struct xfs_bmbt_rec_host *gotp, /* extent to shift */
struct xfs_bmbt_rec_host *leftp, /* preceding extent */
struct xfs_bmbt_irec *got, /* extent to shift */
struct xfs_bmbt_irec *left, /* preceding extent */
struct xfs_btree_cur *cur,
int *logflags) /* output */
int *logflags, /* output */
struct xfs_defer_ops *dfops)
{
struct xfs_bmbt_irec got;
struct xfs_bmbt_irec left;
struct xfs_ifork *ifp = XFS_IFORK_PTR(ip, whichfork);
struct xfs_bmbt_irec new;
xfs_filblks_t blockcount;
int error, i;
struct xfs_mount *mp = ip->i_mount;
xfs_bmbt_get_all(gotp, &got);
xfs_bmbt_get_all(leftp, &left);
blockcount = left.br_blockcount + got.br_blockcount;
blockcount = left->br_blockcount + got->br_blockcount;
ASSERT(xfs_isilocked(ip, XFS_IOLOCK_EXCL));
ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
ASSERT(xfs_bmse_can_merge(&left, &got, shift));
ASSERT(xfs_bmse_can_merge(left, got, shift));
/*
* Merge the in-core extents. Note that the host record pointers and
* current_ext index are invalid once the extent has been removed via
* xfs_iext_remove().
*/
xfs_bmbt_set_blockcount(leftp, blockcount);
xfs_iext_remove(ip, current_ext, 1, 0);
new = *left;
new.br_blockcount = blockcount;
/*
* Update the on-disk extent count, the btree if necessary and log the
@ -5912,12 +5911,12 @@ xfs_bmse_merge(
*logflags |= XFS_ILOG_CORE;
if (!cur) {
*logflags |= XFS_ILOG_DEXT;
return 0;
goto done;
}
/* lookup and remove the extent to merge */
error = xfs_bmbt_lookup_eq(cur, got.br_startoff, got.br_startblock,
got.br_blockcount, &i);
error = xfs_bmbt_lookup_eq(cur, got->br_startoff, got->br_startblock,
got->br_blockcount, &i);
if (error)
return error;
XFS_WANT_CORRUPTED_RETURN(mp, i == 1);
@ -5928,16 +5927,28 @@ xfs_bmse_merge(
XFS_WANT_CORRUPTED_RETURN(mp, i == 1);
/* lookup and update size of the previous extent */
error = xfs_bmbt_lookup_eq(cur, left.br_startoff, left.br_startblock,
left.br_blockcount, &i);
error = xfs_bmbt_lookup_eq(cur, left->br_startoff, left->br_startblock,
left->br_blockcount, &i);
if (error)
return error;
XFS_WANT_CORRUPTED_RETURN(mp, i == 1);
left.br_blockcount = blockcount;
error = xfs_bmbt_update(cur, new.br_startoff, new.br_startblock,
new.br_blockcount, new.br_state);
if (error)
return error;
return xfs_bmbt_update(cur, left.br_startoff, left.br_startblock,
left.br_blockcount, left.br_state);
done:
xfs_iext_update_extent(ifp, current_ext - 1, &new);
xfs_iext_remove(ip, current_ext, 1, 0);
/* update reverse mapping. rmap functions merge the rmaps for us */
error = xfs_rmap_unmap_extent(mp, dfops, ip, whichfork, got);
if (error)
return error;
memcpy(&new, got, sizeof(new));
new.br_startoff = left->br_startoff + left->br_blockcount;
return xfs_rmap_map_extent(mp, dfops, ip, whichfork, &new);
}
/*
@ -5949,7 +5960,7 @@ xfs_bmse_shift_one(
int whichfork,
xfs_fileoff_t offset_shift_fsb,
int *current_ext,
struct xfs_bmbt_rec_host *gotp,
struct xfs_bmbt_irec *got,
struct xfs_btree_cur *cur,
int *logflags,
enum shift_direction direction,
@ -5958,9 +5969,7 @@ xfs_bmse_shift_one(
struct xfs_ifork *ifp;
struct xfs_mount *mp;
xfs_fileoff_t startoff;
struct xfs_bmbt_rec_host *adj_irecp;
struct xfs_bmbt_irec got;
struct xfs_bmbt_irec adj_irec;
struct xfs_bmbt_irec adj_irec, new;
int error;
int i;
int total_extents;
@ -5969,13 +5978,11 @@ xfs_bmse_shift_one(
ifp = XFS_IFORK_PTR(ip, whichfork);
total_extents = xfs_iext_count(ifp);
xfs_bmbt_get_all(gotp, &got);
/* delalloc extents should be prevented by caller */
XFS_WANT_CORRUPTED_RETURN(mp, !isnullstartblock(got.br_startblock));
XFS_WANT_CORRUPTED_RETURN(mp, !isnullstartblock(got->br_startblock));
if (direction == SHIFT_LEFT) {
startoff = got.br_startoff - offset_shift_fsb;
startoff = got->br_startoff - offset_shift_fsb;
/*
* Check for merge if we've got an extent to the left,
@ -5983,46 +5990,39 @@ xfs_bmse_shift_one(
* of the file for the shift.
*/
if (!*current_ext) {
if (got.br_startoff < offset_shift_fsb)
if (got->br_startoff < offset_shift_fsb)
return -EINVAL;
goto update_current_ext;
}
/*
* grab the left extent and check for a large
* enough hole.
*/
adj_irecp = xfs_iext_get_ext(ifp, *current_ext - 1);
xfs_bmbt_get_all(adj_irecp, &adj_irec);
if (startoff <
adj_irec.br_startoff + adj_irec.br_blockcount)
/*
* grab the left extent and check for a large enough hole.
*/
xfs_iext_get_extent(ifp, *current_ext - 1, &adj_irec);
if (startoff < adj_irec.br_startoff + adj_irec.br_blockcount)
return -EINVAL;
/* check whether to merge the extent or shift it down */
if (xfs_bmse_can_merge(&adj_irec, &got,
offset_shift_fsb)) {
error = xfs_bmse_merge(ip, whichfork, offset_shift_fsb,
*current_ext, gotp, adj_irecp,
cur, logflags);
if (error)
return error;
adj_irec = got;
goto update_rmap;
if (xfs_bmse_can_merge(&adj_irec, got, offset_shift_fsb)) {
return xfs_bmse_merge(ip, whichfork, offset_shift_fsb,
*current_ext, got, &adj_irec,
cur, logflags, dfops);
}
} else {
startoff = got.br_startoff + offset_shift_fsb;
startoff = got->br_startoff + offset_shift_fsb;
/* nothing to move if this is the last extent */
if (*current_ext >= (total_extents - 1))
goto update_current_ext;
/*
* If this is not the last extent in the file, make sure there
* is enough room between current extent and next extent for
* accommodating the shift.
*/
adj_irecp = xfs_iext_get_ext(ifp, *current_ext + 1);
xfs_bmbt_get_all(adj_irecp, &adj_irec);
if (startoff + got.br_blockcount > adj_irec.br_startoff)
xfs_iext_get_extent(ifp, *current_ext + 1, &adj_irec);
if (startoff + got->br_blockcount > adj_irec.br_startoff)
return -EINVAL;
/*
* Unlike a left shift (which involves a hole punch),
* a right shift does not modify extent neighbors
@ -6030,45 +6030,48 @@ xfs_bmse_shift_one(
* in this scenario. Check anyways and warn if we
* encounter two extents that could be one.
*/
if (xfs_bmse_can_merge(&got, &adj_irec, offset_shift_fsb))
if (xfs_bmse_can_merge(got, &adj_irec, offset_shift_fsb))
WARN_ON_ONCE(1);
}
/*
* Increment the extent index for the next iteration, update the start
* offset of the in-core extent and update the btree if applicable.
*/
update_current_ext:
*logflags |= XFS_ILOG_CORE;
new = *got;
new.br_startoff = startoff;
if (cur) {
error = xfs_bmbt_lookup_eq(cur, got->br_startoff,
got->br_startblock, got->br_blockcount, &i);
if (error)
return error;
XFS_WANT_CORRUPTED_RETURN(mp, i == 1);
error = xfs_bmbt_update(cur, new.br_startoff,
new.br_startblock, new.br_blockcount,
new.br_state);
if (error)
return error;
} else {
*logflags |= XFS_ILOG_DEXT;
}
xfs_iext_update_extent(ifp, *current_ext, &new);
if (direction == SHIFT_LEFT)
(*current_ext)++;
else
(*current_ext)--;
xfs_bmbt_set_startoff(gotp, startoff);
*logflags |= XFS_ILOG_CORE;
adj_irec = got;
if (!cur) {
*logflags |= XFS_ILOG_DEXT;
goto update_rmap;
}
error = xfs_bmbt_lookup_eq(cur, got.br_startoff, got.br_startblock,
got.br_blockcount, &i);
if (error)
return error;
XFS_WANT_CORRUPTED_RETURN(mp, i == 1);
got.br_startoff = startoff;
error = xfs_bmbt_update(cur, got.br_startoff, got.br_startblock,
got.br_blockcount, got.br_state);
if (error)
return error;
update_rmap:
/* update reverse mapping */
error = xfs_rmap_unmap_extent(mp, dfops, ip, whichfork, &adj_irec);
error = xfs_rmap_unmap_extent(mp, dfops, ip, whichfork, got);
if (error)
return error;
adj_irec.br_startoff = startoff;
return xfs_rmap_map_extent(mp, dfops, ip, whichfork, &adj_irec);
return xfs_rmap_map_extent(mp, dfops, ip, whichfork, &new);
}
/*
@ -6095,7 +6098,6 @@ xfs_bmap_shift_extents(
int num_exts)
{
struct xfs_btree_cur *cur = NULL;
struct xfs_bmbt_rec_host *gotp;
struct xfs_bmbt_irec got;
struct xfs_mount *mp = ip->i_mount;
struct xfs_ifork *ifp;
@ -6122,7 +6124,6 @@ xfs_bmap_shift_extents(
ASSERT(xfs_isilocked(ip, XFS_IOLOCK_EXCL));
ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
ASSERT(direction == SHIFT_LEFT || direction == SHIFT_RIGHT);
ASSERT(*next_fsb != NULLFSBLOCK || direction == SHIFT_RIGHT);
ifp = XFS_IFORK_PTR(ip, whichfork);
if (!(ifp->if_flags & XFS_IFEXTENTS)) {
@ -6154,10 +6155,26 @@ xfs_bmap_shift_extents(
* In case of first right shift, we need to initialize next_fsb
*/
if (*next_fsb == NULLFSBLOCK) {
gotp = xfs_iext_get_ext(ifp, total_extents - 1);
xfs_bmbt_get_all(gotp, &got);
ASSERT(direction == SHIFT_RIGHT);
current_ext = total_extents - 1;
xfs_iext_get_extent(ifp, current_ext, &got);
if (stop_fsb > got.br_startoff) {
*done = 1;
goto del_cursor;
}
*next_fsb = got.br_startoff;
if (stop_fsb > *next_fsb) {
} else {
/*
* Look up the extent index for the fsb where we start shifting. We can
* henceforth iterate with current_ext as extent list changes are locked
* out via ilock.
*
* If next_fsb lies in a hole beyond which there are no extents we are
* done.
*/
if (!xfs_iext_lookup_extent(ip, ifp, *next_fsb, &current_ext,
&got)) {
*done = 1;
goto del_cursor;
}
@ -6165,37 +6182,26 @@ xfs_bmap_shift_extents(
/* Lookup the extent index at which we have to stop */
if (direction == SHIFT_RIGHT) {
gotp = xfs_iext_bno_to_ext(ifp, stop_fsb, &stop_extent);
struct xfs_bmbt_irec s;
xfs_iext_lookup_extent(ip, ifp, stop_fsb, &stop_extent, &s);
/* Make stop_extent exclusive of shift range */
stop_extent--;
} else
if (current_ext <= stop_extent) {
error = -EIO;
goto del_cursor;
}
} else {
stop_extent = total_extents;
/*
* Look up the extent index for the fsb where we start shifting. We can
* henceforth iterate with current_ext as extent list changes are locked
* out via ilock.
*
* gotp can be null in 2 cases: 1) if there are no extents or 2)
* *next_fsb lies in a hole beyond which there are no extents. Either
* way, we are done.
*/
gotp = xfs_iext_bno_to_ext(ifp, *next_fsb, &current_ext);
if (!gotp) {
*done = 1;
goto del_cursor;
}
/* some sanity checking before we finally start shifting extents */
if ((direction == SHIFT_LEFT && current_ext >= stop_extent) ||
(direction == SHIFT_RIGHT && current_ext <= stop_extent)) {
error = -EIO;
goto del_cursor;
if (current_ext >= stop_extent) {
error = -EIO;
goto del_cursor;
}
}
while (nexts++ < num_exts) {
error = xfs_bmse_shift_one(ip, whichfork, offset_shift_fsb,
&current_ext, gotp, cur, &logflags,
&current_ext, &got, cur, &logflags,
direction, dfops);
if (error)
goto del_cursor;
@ -6213,13 +6219,11 @@ xfs_bmap_shift_extents(
*next_fsb = NULLFSBLOCK;
break;
}
gotp = xfs_iext_get_ext(ifp, current_ext);
xfs_iext_get_extent(ifp, current_ext, &got);
}
if (!*done) {
xfs_bmbt_get_all(gotp, &got);
if (!*done)
*next_fsb = got.br_startoff;
}
del_cursor:
if (cur)
@ -6248,7 +6252,6 @@ xfs_bmap_split_extent_at(
{
int whichfork = XFS_DATA_FORK;
struct xfs_btree_cur *cur = NULL;
struct xfs_bmbt_rec_host *gotp;
struct xfs_bmbt_irec got;
struct xfs_bmbt_irec new; /* split extent */
struct xfs_mount *mp = ip->i_mount;
@ -6280,21 +6283,10 @@ xfs_bmap_split_extent_at(
}
/*
* gotp can be null in 2 cases: 1) if there are no extents
* or 2) split_fsb lies in a hole beyond which there are
* no extents. Either way, we are done.
* If there are not extents, or split_fsb lies in a hole we are done.
*/
gotp = xfs_iext_bno_to_ext(ifp, split_fsb, &current_ext);
if (!gotp)
return 0;
xfs_bmbt_get_all(gotp, &got);
/*
* Check split_fsb lies in a hole or the start boundary offset
* of the extent.
*/
if (got.br_startoff >= split_fsb)
if (!xfs_iext_lookup_extent(ip, ifp, split_fsb, &current_ext, &got) ||
got.br_startoff >= split_fsb)
return 0;
gotblkcnt = split_fsb - got.br_startoff;
@ -6317,8 +6309,8 @@ xfs_bmap_split_extent_at(
XFS_WANT_CORRUPTED_GOTO(mp, i == 1, del_cursor);
}
xfs_bmbt_set_blockcount(gotp, gotblkcnt);
got.br_blockcount = gotblkcnt;
xfs_iext_update_extent(ifp, current_ext, &got);
logflags = XFS_ILOG_CORE;
if (cur) {
@ -6402,7 +6394,7 @@ xfs_bmap_split_extent(
if (error)
goto out;
error = xfs_defer_finish(&tp, &dfops, NULL);
error = xfs_defer_finish(&tp, &dfops);
if (error)
goto out;
@ -6452,7 +6444,7 @@ __xfs_bmap_add(
bi->bi_whichfork = whichfork;
bi->bi_bmap = *bmap;
error = xfs_defer_join(dfops, bi->bi_owner);
error = xfs_defer_ijoin(dfops, bi->bi_owner);
if (error) {
kmem_free(bi);
return error;

1
fs/xfs/libxfs/xfs_bmap_btree.c
View File

@ -858,6 +858,7 @@ xfs_bmbt_change_owner(
cur = xfs_bmbt_init_cursor(ip->i_mount, tp, ip, whichfork);
if (!cur)
return -ENOMEM;
cur->bc_private.b.flags |= XFS_BTCUR_BPRV_INVALID_OWNER;
error = xfs_btree_change_owner(cur, new_owner, buffer_list);
xfs_btree_del_cursor(cur, error ? XFS_BTREE_ERROR : XFS_BTREE_NOERROR);

29
fs/xfs/libxfs/xfs_btree.c
View File

@ -1791,6 +1791,7 @@ xfs_btree_lookup_get_block(
/* Check the inode owner since the verifiers don't. */
if (xfs_sb_version_hascrc(&cur->bc_mp->m_sb) &&
!(cur->bc_private.b.flags & XFS_BTCUR_BPRV_INVALID_OWNER) &&
(cur->bc_flags & XFS_BTREE_LONG_PTRS) &&
be64_to_cpu((*blkp)->bb_u.l.bb_owner) !=
cur->bc_private.b.ip->i_ino)
@ -4451,10 +4452,15 @@ xfs_btree_block_change_owner(
/* modify the owner */
block = xfs_btree_get_block(cur, level, &bp);
if (cur->bc_flags & XFS_BTREE_LONG_PTRS)
if (cur->bc_flags & XFS_BTREE_LONG_PTRS) {
if (block->bb_u.l.bb_owner == cpu_to_be64(bbcoi->new_owner))
return 0;
block->bb_u.l.bb_owner = cpu_to_be64(bbcoi->new_owner);
else
} else {
if (block->bb_u.s.bb_owner == cpu_to_be32(bbcoi->new_owner))
return 0;
block->bb_u.s.bb_owner = cpu_to_be32(bbcoi->new_owner);
}
/*
* If the block is a root block hosted in an inode, we might not have a
@ -4463,16 +4469,19 @@ xfs_btree_block_change_owner(
* block is formatted into the on-disk inode fork. We still change it,
* though, so everything is consistent in memory.
*/
if (bp) {
if (cur->bc_tp) {
xfs_trans_ordered_buf(cur->bc_tp, bp);
xfs_btree_log_block(cur, bp, XFS_BB_OWNER);
} else {
xfs_buf_delwri_queue(bp, bbcoi->buffer_list);
}
} else {
if (!bp) {
ASSERT(cur->bc_flags & XFS_BTREE_ROOT_IN_INODE);
ASSERT(level == cur->bc_nlevels - 1);
return 0;
}
if (cur->bc_tp) {
if (!xfs_trans_ordered_buf(cur->bc_tp, bp)) {
xfs_btree_log_block(cur, bp, XFS_BB_OWNER);
return -EAGAIN;
}
} else {
xfs_buf_delwri_queue(bp, bbcoi->buffer_list);
}
return 0;

3
fs/xfs/libxfs/xfs_btree.h
View File

@ -233,7 +233,8 @@ typedef struct xfs_btree_cur
short forksize; /* fork's inode space */
char whichfork; /* data or attr fork */
char flags; /* flags */
#define XFS_BTCUR_BPRV_WASDEL 1 /* was delayed */
#define XFS_BTCUR_BPRV_WASDEL (1<<0) /* was delayed */
#define XFS_BTCUR_BPRV_INVALID_OWNER (1<<1) /* for ext swap */
} b;
} bc_private; /* per-btree type data */
} xfs_btree_cur_t;

29
fs/xfs/libxfs/xfs_defer.c
View File

@ -240,23 +240,19 @@ xfs_defer_trans_abort(
STATIC int
xfs_defer_trans_roll(
struct xfs_trans **tp,
struct xfs_defer_ops *dop,
struct xfs_inode *ip)
struct xfs_defer_ops *dop)
{
int i;
int error;
/* Log all the joined inodes except the one we passed in. */
for (i = 0; i < XFS_DEFER_OPS_NR_INODES && dop->dop_inodes[i]; i++) {
if (dop->dop_inodes[i] == ip)
continue;
/* Log all the joined inodes. */
for (i = 0; i < XFS_DEFER_OPS_NR_INODES && dop->dop_inodes[i]; i++)
xfs_trans_log_inode(*tp, dop->dop_inodes[i], XFS_ILOG_CORE);
}
trace_xfs_defer_trans_roll((*tp)->t_mountp, dop);
/* Roll the transaction. */
error = xfs_trans_roll(tp, ip);
error = xfs_trans_roll(tp);
if (error) {
trace_xfs_defer_trans_roll_error((*tp)->t_mountp, dop, error);
xfs_defer_trans_abort(*tp, dop, error);
@ -264,12 +260,9 @@ xfs_defer_trans_roll(
}
dop->dop_committed = true;
/* Rejoin the joined inodes except the one we passed in. */
for (i = 0; i < XFS_DEFER_OPS_NR_INODES && dop->dop_inodes[i]; i++) {
if (dop->dop_inodes[i] == ip)
continue;
/* Rejoin the joined inodes. */
for (i = 0; i < XFS_DEFER_OPS_NR_INODES && dop->dop_inodes[i]; i++)
xfs_trans_ijoin(*tp, dop->dop_inodes[i], 0);
}
return error;
}
@ -284,11 +277,10 @@ xfs_defer_has_unfinished_work(
/*
* Add this inode to the deferred op. Each joined inode is relogged
* each time we roll the transaction, in addition to any inode passed
* to xfs_defer_finish().
* each time we roll the transaction.
*/
int
xfs_defer_join(
xfs_defer_ijoin(
struct xfs_defer_ops *dop,
struct xfs_inode *ip)
{
@ -317,8 +309,7 @@ xfs_defer_join(
int
xfs_defer_finish(
struct xfs_trans **tp,
struct xfs_defer_ops *dop,
struct xfs_inode *ip)
struct xfs_defer_ops *dop)
{
struct xfs_defer_pending *dfp;
struct list_head *li;
@ -337,7 +328,7 @@ xfs_defer_finish(
xfs_defer_intake_work(*tp, dop);
/* Roll the transaction. */
error = xfs_defer_trans_roll(tp, dop, ip);
error = xfs_defer_trans_roll(tp, dop);
if (error)
goto out;

5
fs/xfs/libxfs/xfs_defer.h
View File

@ -72,12 +72,11 @@ struct xfs_defer_ops {
void xfs_defer_add(struct xfs_defer_ops *dop, enum xfs_defer_ops_type type,
struct list_head *h);
int xfs_defer_finish(struct xfs_trans **tp, struct xfs_defer_ops *dop,
struct xfs_inode *ip);
int xfs_defer_finish(struct xfs_trans **tp, struct xfs_defer_ops *dop);
void xfs_defer_cancel(struct xfs_defer_ops *dop);
void xfs_defer_init(struct xfs_defer_ops *dop, xfs_fsblock_t *fbp);
bool xfs_defer_has_unfinished_work(struct xfs_defer_ops *dop);
int xfs_defer_join(struct xfs_defer_ops *dop, struct xfs_inode *ip);
int xfs_defer_ijoin(struct xfs_defer_ops *dop, struct xfs_inode *ip);
/* Description of a deferred type. */
struct xfs_defer_op_type {

57
fs/xfs/libxfs/xfs_ialloc.c
View File

@ -378,8 +378,6 @@ xfs_ialloc_inode_init(
* transaction and pin the log appropriately.
*/
xfs_trans_ordered_buf(tp, fbuf);
xfs_trans_log_buf(tp, fbuf, 0,
BBTOB(fbuf->b_length) - 1);
}
} else {
fbuf->b_flags |= XBF_DONE;
@ -1133,6 +1131,7 @@ xfs_dialloc_ag_inobt(
int error;
int offset;
int i, j;
int searchdistance = 10;
pag = xfs_perag_get(mp, agno);
@ -1159,7 +1158,6 @@ xfs_dialloc_ag_inobt(
if (pagno == agno) {
int doneleft; /* done, to the left */
int doneright; /* done, to the right */
int searchdistance = 10;
error = xfs_inobt_lookup(cur, pagino, XFS_LOOKUP_LE, &i);
if (error)
@ -1220,21 +1218,9 @@ xfs_dialloc_ag_inobt(
/*
* Loop until we find an inode chunk with a free inode.
*/
while (!doneleft || !doneright) {
while (--searchdistance > 0 && (!doneleft || !doneright)) {
int useleft; /* using left inode chunk this time */
if (!--searchdistance) {
/*
* Not in range - save last search
* location and allocate a new inode
*/
xfs_btree_del_cursor(tcur, XFS_BTREE_NOERROR);
pag->pagl_leftrec = trec.ir_startino;
pag->pagl_rightrec = rec.ir_startino;
pag->pagl_pagino = pagino;
goto newino;
}
/* figure out the closer block if both are valid. */
if (!doneleft && !doneright) {
useleft = pagino -
@ -1278,26 +1264,37 @@ xfs_dialloc_ag_inobt(
goto error1;
}
/*
* We've reached the end of the btree. because
* we are only searching a small chunk of the
* btree each search, there is obviously free
* inodes closer to the parent inode than we
* are now. restart the search again.
*/
pag->pagl_pagino = NULLAGINO;
pag->pagl_leftrec = NULLAGINO;
pag->pagl_rightrec = NULLAGINO;
xfs_btree_del_cursor(tcur, XFS_BTREE_NOERROR);
xfs_btree_del_cursor(cur, XFS_BTREE_NOERROR);
goto restart_pagno;
if (searchdistance <= 0) {
/*
* Not in range - save last search
* location and allocate a new inode
*/
xfs_btree_del_cursor(tcur, XFS_BTREE_NOERROR);
pag->pagl_leftrec = trec.ir_startino;
pag->pagl_rightrec = rec.ir_startino;
pag->pagl_pagino = pagino;
} else {
/*
* We've reached the end of the btree. because
* we are only searching a small chunk of the
* btree each search, there is obviously free
* inodes closer to the parent inode than we
* are now. restart the search again.
*/
pag->pagl_pagino = NULLAGINO;
pag->pagl_leftrec = NULLAGINO;
pag->pagl_rightrec = NULLAGINO;
xfs_btree_del_cursor(tcur, XFS_BTREE_NOERROR);
xfs_btree_del_cursor(cur, XFS_BTREE_NOERROR);
goto restart_pagno;
}
}
/*
* In a different AG from the parent.
* See if the most recently allocated block has any free.
*/
newino:
if (agi->agi_newino != cpu_to_be32(NULLAGINO)) {
error = xfs_inobt_lookup(cur, be32_to_cpu(agi->agi_newino),
XFS_LOOKUP_EQ, &i);

21
fs/xfs/libxfs/xfs_inode_fork.c
View File

@ -1499,14 +1499,11 @@ xfs_iext_realloc_indirect(
xfs_ifork_t *ifp, /* inode fork pointer */
int new_size) /* new indirection array size */
{
int nlists; /* number of irec's (ex lists) */
int size; /* current indirection array size */
ASSERT(ifp->if_flags & XFS_IFEXTIREC);
nlists = ifp->if_real_bytes / XFS_IEXT_BUFSZ;
size = nlists * sizeof(xfs_ext_irec_t);
ASSERT(ifp->if_real_bytes);
ASSERT((new_size >= 0) && (new_size != size));
ASSERT((new_size >= 0) &&
(new_size != ((ifp->if_real_bytes / XFS_IEXT_BUFSZ) *
sizeof(xfs_ext_irec_t))));
if (new_size == 0) {
xfs_iext_destroy(ifp);
} else {
@ -2023,3 +2020,15 @@ xfs_iext_get_extent(
xfs_bmbt_get_all(xfs_iext_get_ext(ifp, idx), gotp);
return true;
}
void
xfs_iext_update_extent(
struct xfs_ifork *ifp,
xfs_extnum_t idx,
struct xfs_bmbt_irec *gotp)
{
ASSERT(idx >= 0);
ASSERT(idx < xfs_iext_count(ifp));
xfs_bmbt_set_all(xfs_iext_get_ext(ifp, idx), gotp);
}

2
fs/xfs/libxfs/xfs_inode_fork.h
View File

@ -187,6 +187,8 @@ bool xfs_iext_lookup_extent(struct xfs_inode *ip,
xfs_extnum_t *idxp, struct xfs_bmbt_irec *gotp);
bool xfs_iext_get_extent(struct xfs_ifork *ifp, xfs_extnum_t idx,
struct xfs_bmbt_irec *gotp);
void xfs_iext_update_extent(struct xfs_ifork *ifp, xfs_extnum_t idx,
struct xfs_bmbt_irec *gotp);
extern struct kmem_zone *xfs_ifork_zone;

2
fs/xfs/libxfs/xfs_refcount.c
View File

@ -1679,7 +1679,7 @@ xfs_refcount_recover_cow_leftovers(
xfs_bmap_add_free(mp, &dfops, fsb,
rr->rr_rrec.rc_blockcount, NULL);
error = xfs_defer_finish(&tp, &dfops, NULL);
error = xfs_defer_finish(&tp, &dfops);
if (error)
goto out_defer;

71
fs/xfs/xfs_aops.c
View File

@ -85,11 +85,11 @@ xfs_find_bdev_for_inode(
* associated buffer_heads, paying attention to the start and end offsets that
* we need to process on the page.
*
* Landmine Warning: bh->b_end_io() will call end_page_writeback() on the last
* buffer in the IO. Once it does this, it is unsafe to access the bufferhead or
* the page at all, as we may be racing with memory reclaim and it can free both
* the bufferhead chain and the page as it will see the page as clean and
* unused.
* Note that we open code the action in end_buffer_async_write here so that we
* only have to iterate over the buffers attached to the page once. This is not
* only more efficient, but also ensures that we only calls end_page_writeback
* at the end of the iteration, and thus avoids the pitfall of having the page
* and buffers potentially freed after every call to end_buffer_async_write.
*/
static void
xfs_finish_page_writeback(
@ -97,29 +97,44 @@ xfs_finish_page_writeback(
struct bio_vec *bvec,
int error)
{
unsigned int end = bvec->bv_offset + bvec->bv_len - 1;
struct buffer_head *head, *bh, *next;
struct buffer_head *head = page_buffers(bvec->bv_page), *bh = head;
bool busy = false;
unsigned int off = 0;
unsigned int bsize;
unsigned long flags;
ASSERT(bvec->bv_offset < PAGE_SIZE);
ASSERT((bvec->bv_offset & (i_blocksize(inode) - 1)) == 0);
ASSERT(end < PAGE_SIZE);
ASSERT(bvec->bv_offset + bvec->bv_len <= PAGE_SIZE);
ASSERT((bvec->bv_len & (i_blocksize(inode) - 1)) == 0);
bh = head = page_buffers(bvec->bv_page);
bsize = bh->b_size;
local_irq_save(flags);
bit_spin_lock(BH_Uptodate_Lock, &head->b_state);
do {
if (off > end)
break;
next = bh->b_this_page;
if (off < bvec->bv_offset)
goto next_bh;
bh->b_end_io(bh, !error);
next_bh:
off += bsize;
} while ((bh = next) != head);
if (off >= bvec->bv_offset &&
off < bvec->bv_offset + bvec->bv_len) {
ASSERT(buffer_async_write(bh));
ASSERT(bh->b_end_io == NULL);
if (error) {
mark_buffer_write_io_error(bh);
clear_buffer_uptodate(bh);
SetPageError(bvec->bv_page);
} else {
set_buffer_uptodate(bh);
}
clear_buffer_async_write(bh);
unlock_buffer(bh);
} else if (buffer_async_write(bh)) {
ASSERT(buffer_locked(bh));
busy = true;
}
off += bh->b_size;
} while ((bh = bh->b_this_page) != head);
bit_spin_unlock(BH_Uptodate_Lock, &head->b_state);
local_irq_restore(flags);
if (!busy)
end_page_writeback(bvec->bv_page);
}
/*
@ -133,8 +148,10 @@ xfs_destroy_ioend(
int error)
{
struct inode *inode = ioend->io_inode;
struct bio *last = ioend->io_bio;
struct bio *bio, *next;
struct bio *bio = &ioend->io_inline_bio;
struct bio *last = ioend->io_bio, *next;
u64 start = bio->bi_iter.bi_sector;
bool quiet = bio_flagged(bio, BIO_QUIET);
for (bio = &ioend->io_inline_bio; bio; bio = next) {
struct bio_vec *bvec;
@ -155,6 +172,11 @@ xfs_destroy_ioend(
bio_put(bio);
}
if (unlikely(error && !quiet)) {
xfs_err_ratelimited(XFS_I(inode)->i_mount,
"writeback error on sector %llu", start);
}
}
/*
@ -423,7 +445,8 @@ xfs_start_buffer_writeback(
ASSERT(!buffer_delay(bh));
ASSERT(!buffer_unwritten(bh));
mark_buffer_async_write(bh);
bh->b_end_io = NULL;
set_buffer_async_write(bh);
set_buffer_uptodate(bh);
clear_buffer_dirty(bh);
}

6
fs/xfs/xfs_attr_inactive.c
View File

@ -97,7 +97,7 @@ xfs_attr3_leaf_freextent(
/*
* Roll to next transaction.
*/
error = xfs_trans_roll(trans, dp);
error = xfs_trans_roll_inode(trans, dp);
if (error)
return error;
}
@ -308,7 +308,7 @@ xfs_attr3_node_inactive(
/*
* Atomically commit the whole invalidate stuff.
*/
error = xfs_trans_roll(trans, dp);
error = xfs_trans_roll_inode(trans, dp);
if (error)
return error;
}
@ -375,7 +375,7 @@ xfs_attr3_root_inactive(
/*
* Commit the invalidate and start the next transaction.
*/
error = xfs_trans_roll(trans, dp);
error = xfs_trans_roll_inode(trans, dp);
return error;
}

2
fs/xfs/xfs_bmap_item.c
View File

@ -502,7 +502,7 @@ xfs_bui_recover(
}
/* Finish transaction, free inodes. */
error = xfs_defer_finish(&tp, &dfops, NULL);
error = xfs_defer_finish(&tp, &dfops);
if (error)
goto err_dfops;

122
fs/xfs/xfs_bmap_util.c
View File

@ -222,22 +222,21 @@ xfs_bmap_eof(
* Count leaf blocks given a range of extent records. Delayed allocation
* extents are not counted towards the totals.
*/
STATIC void
xfs_extnum_t
xfs_bmap_count_leaves(
struct xfs_ifork *ifp,
xfs_extnum_t *numrecs,
xfs_filblks_t *count)
{
xfs_extnum_t i;
xfs_extnum_t nr_exts = xfs_iext_count(ifp);
struct xfs_bmbt_irec got;
xfs_extnum_t numrecs = 0, i = 0;
for (i = 0; i < nr_exts; i++) {
xfs_bmbt_rec_host_t *frp = xfs_iext_get_ext(ifp, i);
if (!isnullstartblock(xfs_bmbt_get_startblock(frp))) {
(*numrecs)++;
*count += xfs_bmbt_get_blockcount(frp);
while (xfs_iext_get_extent(ifp, i++, &got)) {
if (!isnullstartblock(got.br_startblock)) {
*count += got.br_blockcount;
numrecs++;
}
}
return numrecs;
}
/*
@ -370,7 +369,7 @@ xfs_bmap_count_blocks(
switch (XFS_IFORK_FORMAT(ip, whichfork)) {
case XFS_DINODE_FMT_EXTENTS:
xfs_bmap_count_leaves(ifp, nextents, count);
*nextents = xfs_bmap_count_leaves(ifp, count);
return 0;
case XFS_DINODE_FMT_BTREE:
if (!(ifp->if_flags & XFS_IFEXTENTS)) {
@ -1136,7 +1135,7 @@ xfs_alloc_file_space(
/*
* Complete the transaction
*/
error = xfs_defer_finish(&tp, &dfops, NULL);
error = xfs_defer_finish(&tp, &dfops);
if (error)
goto error0;
@ -1202,7 +1201,8 @@ xfs_unmap_extent(
if (error)
goto out_bmap_cancel;
error = xfs_defer_finish(&tp, &dfops, ip);
xfs_defer_ijoin(&dfops, ip);
error = xfs_defer_finish(&tp, &dfops);
if (error)
goto out_bmap_cancel;
@ -1496,7 +1496,7 @@ xfs_shift_file_space(
if (error)
goto out_bmap_cancel;
error = xfs_defer_finish(&tp, &dfops, NULL);
error = xfs_defer_finish(&tp, &dfops);
if (error)
goto out_bmap_cancel;
@ -1777,7 +1777,8 @@ xfs_swap_extent_rmap(
if (error)
goto out_defer;
error = xfs_defer_finish(tpp, &dfops, ip);
xfs_defer_ijoin(&dfops, ip);
error = xfs_defer_finish(tpp, &dfops);
if (error)
goto out_defer;
@ -1840,29 +1841,18 @@ xfs_swap_extent_forks(
}
/*
* Before we've swapped the forks, lets set the owners of the forks
* appropriately. We have to do this as we are demand paging the btree
* buffers, and so the validation done on read will expect the owner
* field to be correctly set. Once we change the owners, we can swap the
* inode forks.
* Btree format (v3) inodes have the inode number stamped in the bmbt
* block headers. We can't start changing the bmbt blocks until the
* inode owner change is logged so recovery does the right thing in the
* event of a crash. Set the owner change log flags now and leave the
* bmbt scan as the last step.
*/
if (ip->i_d.di_version == 3 &&
ip->i_d.di_format == XFS_DINODE_FMT_BTREE) {
ip->i_d.di_format == XFS_DINODE_FMT_BTREE)
(*target_log_flags) |= XFS_ILOG_DOWNER;
error = xfs_bmbt_change_owner(tp, ip, XFS_DATA_FORK,
tip->i_ino, NULL);
if (error)
return error;
}
if (tip->i_d.di_version == 3 &&
tip->i_d.di_format == XFS_DINODE_FMT_BTREE) {
tip->i_d.di_format == XFS_DINODE_FMT_BTREE)
(*src_log_flags) |= XFS_ILOG_DOWNER;
error = xfs_bmbt_change_owner(tp, tip, XFS_DATA_FORK,
ip->i_ino, NULL);
if (error)
return error;
}
/*
* Swap the data forks of the inodes
@ -1940,6 +1930,48 @@ xfs_swap_extent_forks(
return 0;
}
/*
* Fix up the owners of the bmbt blocks to refer to the current inode. The
* change owner scan attempts to order all modified buffers in the current
* transaction. In the event of ordered buffer failure, the offending buffer is
* physically logged as a fallback and the scan returns -EAGAIN. We must roll
* the transaction in this case to replenish the fallback log reservation and
* restart the scan. This process repeats until the scan completes.
*/
static int
xfs_swap_change_owner(
struct xfs_trans **tpp,
struct xfs_inode *ip,
struct xfs_inode *tmpip)
{
int error;
struct xfs_trans *tp = *tpp;
do {
error = xfs_bmbt_change_owner(tp, ip, XFS_DATA_FORK, ip->i_ino,
NULL);
/* success or fatal error */
if (error != -EAGAIN)
break;
error = xfs_trans_roll(tpp);
if (error)
break;
tp = *tpp;
/*
* Redirty both inodes so they can relog and keep the log tail
* moving forward.
*/
xfs_trans_ijoin(tp, ip, 0);
xfs_trans_ijoin(tp, tmpip, 0);
xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
xfs_trans_log_inode(tp, tmpip, XFS_ILOG_CORE);
} while (true);
return error;
}
int
xfs_swap_extents(
struct xfs_inode *ip, /* target inode */
@ -1954,7 +1986,7 @@ xfs_swap_extents(
int lock_flags;
struct xfs_ifork *cowfp;
uint64_t f;
int resblks;
int resblks = 0;
/*
* Lock the inodes against other IO, page faults and truncate to
@ -2002,11 +2034,8 @@ xfs_swap_extents(
XFS_SWAP_RMAP_SPACE_RES(mp,
XFS_IFORK_NEXTENTS(tip, XFS_DATA_FORK),
XFS_DATA_FORK);
error = xfs_trans_alloc(mp, &M_RES(mp)->tr_write, resblks,
0, 0, &tp);
} else
error = xfs_trans_alloc(mp, &M_RES(mp)->tr_ichange, 0,
0, 0, &tp);
}
error = xfs_trans_alloc(mp, &M_RES(mp)->tr_write, resblks, 0, 0, &tp);
if (error)
goto out_unlock;
@ -2091,6 +2120,23 @@ xfs_swap_extents(
xfs_trans_log_inode(tp, ip, src_log_flags);
xfs_trans_log_inode(tp, tip, target_log_flags);
/*
* The extent forks have been swapped, but crc=1,rmapbt=0 filesystems
* have inode number owner values in the bmbt blocks that still refer to
* the old inode. Scan each bmbt to fix up the owner values with the
* inode number of the current inode.
*/
if (src_log_flags & XFS_ILOG_DOWNER) {
error = xfs_swap_change_owner(&tp, ip, tip);
if (error)
goto out_trans_cancel;
}
if (target_log_flags & XFS_ILOG_DOWNER) {
error = xfs_swap_change_owner(&tp, tip, ip);
if (error)
goto out_trans_cancel;
}
/*
* If this is a synchronous mount, make sure that the
* transaction goes to disk before returning to the user.

1
fs/xfs/xfs_bmap_util.h
View File

@ -70,6 +70,7 @@ int xfs_swap_extents(struct xfs_inode *ip, struct xfs_inode *tip,
xfs_daddr_t xfs_fsb_to_db(struct xfs_inode *ip, xfs_fsblock_t fsb);
xfs_extnum_t xfs_bmap_count_leaves(struct xfs_ifork *ifp, xfs_filblks_t *count);
int xfs_bmap_count_blocks(struct xfs_trans *tp, struct xfs_inode *ip,
int whichfork, xfs_extnum_t *nextents,
xfs_filblks_t *count);

137
fs/xfs/xfs_buf_item.c
View File

@ -29,6 +29,7 @@
#include "xfs_error.h"
#include "xfs_trace.h"
#include "xfs_log.h"
#include "xfs_inode.h"
kmem_zone_t *xfs_buf_item_zone;
@ -322,6 +323,8 @@ xfs_buf_item_format(
ASSERT((bip->bli_flags & XFS_BLI_STALE) ||
(xfs_blft_from_flags(&bip->__bli_format) > XFS_BLFT_UNKNOWN_BUF
&& xfs_blft_from_flags(&bip->__bli_format) < XFS_BLFT_MAX_BUF));
ASSERT(!(bip->bli_flags & XFS_BLI_ORDERED) ||
(bip->bli_flags & XFS_BLI_STALE));
/*
@ -346,16 +349,6 @@ xfs_buf_item_format(
bip->bli_flags &= ~XFS_BLI_INODE_BUF;
}
if ((bip->bli_flags & (XFS_BLI_ORDERED|XFS_BLI_STALE)) ==
XFS_BLI_ORDERED) {
/*
* The buffer has been logged just to order it. It is not being
* included in the transaction commit, so don't format it.
*/
trace_xfs_buf_item_format_ordered(bip);
return;
}
for (i = 0; i < bip->bli_format_count; i++) {
xfs_buf_item_format_segment(bip, lv, &vecp, offset,
&bip->bli_formats[i]);
@ -574,26 +567,20 @@ xfs_buf_item_unlock(
{
struct xfs_buf_log_item *bip = BUF_ITEM(lip);
struct xfs_buf *bp = bip->bli_buf;
bool clean;
bool aborted;
int flags;
bool aborted = !!(lip->li_flags & XFS_LI_ABORTED);
bool hold = !!(bip->bli_flags & XFS_BLI_HOLD);
bool dirty = !!(bip->bli_flags & XFS_BLI_DIRTY);
#if defined(DEBUG) || defined(XFS_WARN)
bool ordered = !!(bip->bli_flags & XFS_BLI_ORDERED);
#endif
/* Clear the buffer's association with this transaction. */
bp->b_transp = NULL;
/*
* If this is a transaction abort, don't return early. Instead, allow
* the brelse to happen. Normally it would be done for stale
* (cancelled) buffers at unpin time, but we'll never go through the
* pin/unpin cycle if we abort inside commit.
* The per-transaction state has been copied above so clear it from the
* bli.
*/
aborted = (lip->li_flags & XFS_LI_ABORTED) ? true : false;
/*
* Before possibly freeing the buf item, copy the per-transaction state
* so we can reference it safely later after clearing it from the
* buffer log item.
*/
flags = bip->bli_flags;
bip->bli_flags &= ~(XFS_BLI_LOGGED | XFS_BLI_HOLD | XFS_BLI_ORDERED);
/*
@ -601,7 +588,7 @@ xfs_buf_item_unlock(
* unlock the buffer and free the buf item when the buffer is unpinned
* for the last time.
*/
if (flags & XFS_BLI_STALE) {
if (bip->bli_flags & XFS_BLI_STALE) {
trace_xfs_buf_item_unlock_stale(bip);
ASSERT(bip->__bli_format.blf_flags & XFS_BLF_CANCEL);
if (!aborted) {
@ -619,20 +606,11 @@ xfs_buf_item_unlock(
* regardless of whether it is dirty or not. A dirty abort implies a
* shutdown, anyway.
*
* Ordered buffers are dirty but may have no recorded changes, so ensure
* we only release clean items here.
* The bli dirty state should match whether the blf has logged segments
* except for ordered buffers, where only the bli should be dirty.
*/
clean = (flags & XFS_BLI_DIRTY) ? false : true;
if (clean) {
int i;
for (i = 0; i < bip->bli_format_count; i++) {
if (!xfs_bitmap_empty(bip->bli_formats[i].blf_data_map,
bip->bli_formats[i].blf_map_size)) {
clean = false;
break;
}
}
}
ASSERT((!ordered && dirty == xfs_buf_item_dirty_format(bip)) ||
(ordered && dirty && !xfs_buf_item_dirty_format(bip)));
/*
* Clean buffers, by definition, cannot be in the AIL. However, aborted
@ -651,11 +629,11 @@ xfs_buf_item_unlock(
ASSERT(XFS_FORCED_SHUTDOWN(lip->li_mountp));
xfs_trans_ail_remove(lip, SHUTDOWN_LOG_IO_ERROR);
xfs_buf_item_relse(bp);
} else if (clean)
} else if (!dirty)
xfs_buf_item_relse(bp);
}
if (!(flags & XFS_BLI_HOLD))
if (!hold)
xfs_buf_relse(bp);
}
@ -945,14 +923,22 @@ xfs_buf_item_log(
/*
* Return 1 if the buffer has been logged or ordered in a transaction (at any
* point, not just the current transaction) and 0 if not.
* Return true if the buffer has any ranges logged/dirtied by a transaction,
* false otherwise.
*/
uint
xfs_buf_item_dirty(
xfs_buf_log_item_t *bip)
bool
xfs_buf_item_dirty_format(
struct xfs_buf_log_item *bip)
{
return (bip->bli_flags & XFS_BLI_DIRTY);
int i;
for (i = 0; i < bip->bli_format_count; i++) {
if (!xfs_bitmap_empty(bip->bli_formats[i].blf_data_map,
bip->bli_formats[i].blf_map_size))
return true;
}
return false;
}
STATIC void
@ -1054,6 +1040,31 @@ xfs_buf_do_callbacks(
}
}
/*
* Invoke the error state callback for each log item affected by the failed I/O.
*
* If a metadata buffer write fails with a non-permanent error, the buffer is
* eventually resubmitted and so the completion callbacks are not run. The error
* state may need to be propagated to the log items attached to the buffer,
* however, so the next AIL push of the item knows hot to handle it correctly.
*/
STATIC void
xfs_buf_do_callbacks_fail(
struct xfs_buf *bp)
{
struct xfs_log_item *next;
struct xfs_log_item *lip = bp->b_fspriv;
struct xfs_ail *ailp = lip->li_ailp;
spin_lock(&ailp->xa_lock);
for (; lip; lip = next) {
next = lip->li_bio_list;
if (lip->li_ops->iop_error)
lip->li_ops->iop_error(lip, bp);
}
spin_unlock(&ailp->xa_lock);
}
static bool
xfs_buf_iodone_callback_error(
struct xfs_buf *bp)
@ -1123,7 +1134,11 @@ xfs_buf_iodone_callback_error(
if ((mp->m_flags & XFS_MOUNT_UNMOUNTING) && mp->m_fail_unmount)
goto permanent_error;
/* still a transient error, higher layers will retry */
/*
* Still a transient error, run IO completion failure callbacks and let
* the higher layers retry the buffer.
*/
xfs_buf_do_callbacks_fail(bp);
xfs_buf_ioerror(bp, 0);
xfs_buf_relse(bp);
return true;
@ -1204,3 +1219,31 @@ xfs_buf_iodone(
xfs_trans_ail_delete(ailp, lip, SHUTDOWN_CORRUPT_INCORE);
xfs_buf_item_free(BUF_ITEM(lip));
}
/*
* Requeue a failed buffer for writeback
*
* Return true if the buffer has been re-queued properly, false otherwise
*/
bool
xfs_buf_resubmit_failed_buffers(
struct xfs_buf *bp,
struct xfs_log_item *lip,
struct list_head *buffer_list)
{
struct xfs_log_item *next;
/*
* Clear XFS_LI_FAILED flag from all items before resubmit
*
* XFS_LI_FAILED set/clear is protected by xa_lock, caller this
* function already have it acquired
*/
for (; lip; lip = next) {
next = lip->li_bio_list;
xfs_clear_li_failed(lip);
}
/* Add this buffer back to the delayed write list */
return xfs_buf_delwri_queue(bp, buffer_list);
}

5
fs/xfs/xfs_buf_item.h
View File

@ -64,12 +64,15 @@ typedef struct xfs_buf_log_item {
int xfs_buf_item_init(struct xfs_buf *, struct xfs_mount *);
void xfs_buf_item_relse(struct xfs_buf *);
void xfs_buf_item_log(xfs_buf_log_item_t *, uint, uint);
uint xfs_buf_item_dirty(xfs_buf_log_item_t *);
bool xfs_buf_item_dirty_format(struct xfs_buf_log_item *);
void xfs_buf_attach_iodone(struct xfs_buf *,
void(*)(struct xfs_buf *, xfs_log_item_t *),
xfs_log_item_t *);
void xfs_buf_iodone_callbacks(struct xfs_buf *);
void xfs_buf_iodone(struct xfs_buf *, struct xfs_log_item *);
bool xfs_buf_resubmit_failed_buffers(struct xfs_buf *,
struct xfs_log_item *,
struct list_head *);
extern kmem_zone_t *xfs_buf_item_zone;

2
fs/xfs/xfs_dquot.c
View File

@ -383,7 +383,7 @@ xfs_qm_dqalloc(
xfs_trans_bhold(tp, bp);
error = xfs_defer_finish(tpp, &dfops, NULL);
error = xfs_defer_finish(tpp, &dfops);
if (error)
goto error1;

3
fs/xfs/xfs_error.c
View File

@ -57,6 +57,7 @@ static unsigned int xfs_errortag_random_default[] = {
XFS_RANDOM_AG_RESV_CRITICAL,
XFS_RANDOM_DROP_WRITES,
XFS_RANDOM_LOG_BAD_CRC,
XFS_RANDOM_LOG_ITEM_PIN,
};
struct xfs_errortag_attr {
@ -161,6 +162,7 @@ XFS_ERRORTAG_ATTR_RW(bmap_finish_one, XFS_ERRTAG_BMAP_FINISH_ONE);
XFS_ERRORTAG_ATTR_RW(ag_resv_critical, XFS_ERRTAG_AG_RESV_CRITICAL);
XFS_ERRORTAG_ATTR_RW(drop_writes, XFS_ERRTAG_DROP_WRITES);
XFS_ERRORTAG_ATTR_RW(log_bad_crc, XFS_ERRTAG_LOG_BAD_CRC);
XFS_ERRORTAG_ATTR_RW(log_item_pin, XFS_ERRTAG_LOG_ITEM_PIN);
static struct attribute *xfs_errortag_attrs[] = {
XFS_ERRORTAG_ATTR_LIST(noerror),
@ -193,6 +195,7 @@ static struct attribute *xfs_errortag_attrs[] = {
XFS_ERRORTAG_ATTR_LIST(ag_resv_critical),
XFS_ERRORTAG_ATTR_LIST(drop_writes),
XFS_ERRORTAG_ATTR_LIST(log_bad_crc),
XFS_ERRORTAG_ATTR_LIST(log_item_pin),
NULL,
};

4
fs/xfs/xfs_error.h
View File

@ -106,7 +106,8 @@ extern void xfs_verifier_error(struct xfs_buf *bp);
*/
#define XFS_ERRTAG_DROP_WRITES 28
#define XFS_ERRTAG_LOG_BAD_CRC 29
#define XFS_ERRTAG_MAX 30
#define XFS_ERRTAG_LOG_ITEM_PIN 30
#define XFS_ERRTAG_MAX 31
/*
* Random factors for above tags, 1 means always, 2 means 1/2 time, etc.
@ -141,6 +142,7 @@ extern void xfs_verifier_error(struct xfs_buf *bp);
#define XFS_RANDOM_AG_RESV_CRITICAL 4
#define XFS_RANDOM_DROP_WRITES 1
#define XFS_RANDOM_LOG_BAD_CRC 1
#define XFS_RANDOM_LOG_ITEM_PIN 1
#ifdef DEBUG
extern int xfs_errortag_init(struct xfs_mount *mp);

119
fs/xfs/xfs_file.c
View File

@ -1011,98 +1011,69 @@ xfs_file_llseek(
* page_lock (MM)
* i_lock (XFS - extent map serialisation)
*/
/*
* mmap()d file has taken write protection fault and is being made writable. We
* can set the page state up correctly for a writable page, which means we can
* do correct delalloc accounting (ENOSPC checking!) and unwritten extent
* mapping.
*/
STATIC int
xfs_filemap_page_mkwrite(
struct vm_fault *vmf)
{
struct inode *inode = file_inode(vmf->vma->vm_file);
int ret;
trace_xfs_filemap_page_mkwrite(XFS_I(inode));
sb_start_pagefault(inode->i_sb);
file_update_time(vmf->vma->vm_file);
xfs_ilock(XFS_I(inode), XFS_MMAPLOCK_SHARED);
if (IS_DAX(inode)) {
ret = dax_iomap_fault(vmf, PE_SIZE_PTE, &xfs_iomap_ops);
} else {
ret = iomap_page_mkwrite(vmf, &xfs_iomap_ops);
ret = block_page_mkwrite_return(ret);
}
xfs_iunlock(XFS_I(inode), XFS_MMAPLOCK_SHARED);
sb_end_pagefault(inode->i_sb);
return ret;
}
STATIC int
xfs_filemap_fault(
struct vm_fault *vmf)
{
struct inode *inode = file_inode(vmf->vma->vm_file);
int ret;
trace_xfs_filemap_fault(XFS_I(inode));
/* DAX can shortcut the normal fault path on write faults! */
if ((vmf->flags & FAULT_FLAG_WRITE) && IS_DAX(inode))
return xfs_filemap_page_mkwrite(vmf);
xfs_ilock(XFS_I(inode), XFS_MMAPLOCK_SHARED);
if (IS_DAX(inode))
ret = dax_iomap_fault(vmf, PE_SIZE_PTE, &xfs_iomap_ops);
else
ret = filemap_fault(vmf);
xfs_iunlock(XFS_I(inode), XFS_MMAPLOCK_SHARED);
return ret;
}
/*
* Similar to xfs_filemap_fault(), the DAX fault path can call into here on
* both read and write faults. Hence we need to handle both cases. There is no
* ->huge_mkwrite callout for huge pages, so we have a single function here to
* handle both cases here. @flags carries the information on the type of fault
* occuring.
*/
STATIC int
xfs_filemap_huge_fault(
static int
__xfs_filemap_fault(
struct vm_fault *vmf,
enum page_entry_size pe_size)
enum page_entry_size pe_size,
bool write_fault)
{
struct inode *inode = file_inode(vmf->vma->vm_file);
struct xfs_inode *ip = XFS_I(inode);
int ret;
if (!IS_DAX(inode))
return VM_FAULT_FALLBACK;
trace_xfs_filemap_fault(ip, pe_size, write_fault);
trace_xfs_filemap_huge_fault(ip);
if (vmf->flags & FAULT_FLAG_WRITE) {
if (write_fault) {
sb_start_pagefault(inode->i_sb);
file_update_time(vmf->vma->vm_file);
}
xfs_ilock(XFS_I(inode), XFS_MMAPLOCK_SHARED);
ret = dax_iomap_fault(vmf, pe_size, &xfs_iomap_ops);
if (IS_DAX(inode)) {
ret = dax_iomap_fault(vmf, pe_size, &xfs_iomap_ops);
} else {
if (write_fault)
ret = iomap_page_mkwrite(vmf, &xfs_iomap_ops);
else
ret = filemap_fault(vmf);
}
xfs_iunlock(XFS_I(inode), XFS_MMAPLOCK_SHARED);
if (vmf->flags & FAULT_FLAG_WRITE)
if (write_fault)
sb_end_pagefault(inode->i_sb);
return ret;
}
static int
xfs_filemap_fault(
struct vm_fault *vmf)
{
/* DAX can shortcut the normal fault path on write faults! */
return __xfs_filemap_fault(vmf, PE_SIZE_PTE,
IS_DAX(file_inode(vmf->vma->vm_file)) &&
(vmf->flags & FAULT_FLAG_WRITE));
}
static int
xfs_filemap_huge_fault(
struct vm_fault *vmf,
enum page_entry_size pe_size)
{
if (!IS_DAX(file_inode(vmf->vma->vm_file)))
return VM_FAULT_FALLBACK;
/* DAX can shortcut the normal fault path on write faults! */
return __xfs_filemap_fault(vmf, pe_size,
(vmf->flags & FAULT_FLAG_WRITE));
}
static int
xfs_filemap_page_mkwrite(
struct vm_fault *vmf)
{
return __xfs_filemap_fault(vmf, PE_SIZE_PTE, true);
}
/*
* pfn_mkwrite was originally inteneded to ensure we capture time stamp
* updates on write faults. In reality, it's need to serialise against

10
fs/xfs/xfs_icache.c
View File

@ -1124,11 +1124,11 @@ reclaim:
* Because we use RCU freeing we need to ensure the inode always appears
* to be reclaimed with an invalid inode number when in the free state.
* We do this as early as possible under the ILOCK so that
* xfs_iflush_cluster() can be guaranteed to detect races with us here.
* By doing this, we guarantee that once xfs_iflush_cluster has locked
* XFS_ILOCK that it will see either a valid, flushable inode that will
* serialise correctly, or it will see a clean (and invalid) inode that
* it can skip.
* xfs_iflush_cluster() and xfs_ifree_cluster() can be guaranteed to
* detect races with us here. By doing this, we guarantee that once
* xfs_iflush_cluster() or xfs_ifree_cluster() has locked XFS_ILOCK that
* it will see either a valid inode that will serialise correctly, or it
* will see an invalid inode that it can skip.
*/
spin_lock(&ip->i_flags_lock);
ip->i_flags = XFS_IRECLAIM;

40
fs/xfs/xfs_inode.c
View File

@ -1055,7 +1055,7 @@ xfs_dir_ialloc(
tp->t_flags &= ~(XFS_TRANS_DQ_DIRTY);
}
code = xfs_trans_roll(&tp, NULL);
code = xfs_trans_roll(&tp);
if (committed != NULL)
*committed = 1;
@ -1285,7 +1285,7 @@ xfs_create(
*/
xfs_qm_vop_create_dqattach(tp, ip, udqp, gdqp, pdqp);
error = xfs_defer_finish(&tp, &dfops, NULL);
error = xfs_defer_finish(&tp, &dfops);
if (error)
goto out_bmap_cancel;
@ -1513,7 +1513,7 @@ xfs_link(
if (mp->m_flags & (XFS_MOUNT_WSYNC|XFS_MOUNT_DIRSYNC))
xfs_trans_set_sync(tp);
error = xfs_defer_finish(&tp, &dfops, NULL);
error = xfs_defer_finish(&tp, &dfops);
if (error) {
xfs_defer_cancel(&dfops);
goto error_return;
@ -1607,11 +1607,12 @@ xfs_itruncate_extents(
* Duplicate the transaction that has the permanent
* reservation and commit the old transaction.
*/
error = xfs_defer_finish(&tp, &dfops, ip);
xfs_defer_ijoin(&dfops, ip);
error = xfs_defer_finish(&tp, &dfops);
if (error)
goto out_bmap_cancel;
error = xfs_trans_roll(&tp, ip);
error = xfs_trans_roll_inode(&tp, ip);
if (error)
goto out;
}
@ -1855,7 +1856,7 @@ xfs_inactive_ifree(
* Just ignore errors at this point. There is nothing we can do except
* to try to keep going. Make sure it's not a silent error.
*/
error = xfs_defer_finish(&tp, &dfops, NULL);
error = xfs_defer_finish(&tp, &dfops);
if (error) {
xfs_notice(mp, "%s: xfs_defer_finish returned error %d",
__func__, error);
@ -2359,11 +2360,24 @@ retry:
* already marked stale. If we can't lock it, back off
* and retry.
*/
if (ip != free_ip &&
!xfs_ilock_nowait(ip, XFS_ILOCK_EXCL)) {
rcu_read_unlock();
delay(1);
goto retry;
if (ip != free_ip) {
if (!xfs_ilock_nowait(ip, XFS_ILOCK_EXCL)) {
rcu_read_unlock();
delay(1);
goto retry;
}
/*
* Check the inode number again in case we're
* racing with freeing in xfs_reclaim_inode().
* See the comments in that function for more
* information as to why the initial check is
* not sufficient.
*/
if (ip->i_ino != inum + i) {
xfs_iunlock(ip, XFS_ILOCK_EXCL);
continue;
}
}
rcu_read_unlock();
@ -2637,7 +2651,7 @@ xfs_remove(
if (mp->m_flags & (XFS_MOUNT_WSYNC|XFS_MOUNT_DIRSYNC))
xfs_trans_set_sync(tp);
error = xfs_defer_finish(&tp, &dfops, NULL);
error = xfs_defer_finish(&tp, &dfops);
if (error)
goto out_bmap_cancel;
@ -2723,7 +2737,7 @@ xfs_finish_rename(
if (tp->t_mountp->m_flags & (XFS_MOUNT_WSYNC|XFS_MOUNT_DIRSYNC))
xfs_trans_set_sync(tp);
error = xfs_defer_finish(&tp, dfops, NULL);
error = xfs_defer_finish(&tp, dfops);
if (error) {
xfs_defer_cancel(dfops);
xfs_trans_cancel(tp);

47
fs/xfs/xfs_inode_item.c
View File

@ -27,6 +27,7 @@
#include "xfs_error.h"
#include "xfs_trace.h"
#include "xfs_trans_priv.h"
#include "xfs_buf_item.h"
#include "xfs_log.h"
@ -475,6 +476,23 @@ xfs_inode_item_unpin(
wake_up_bit(&ip->i_flags, __XFS_IPINNED_BIT);
}
/*
* Callback used to mark a buffer with XFS_LI_FAILED when items in the buffer
* have been failed during writeback
*
* This informs the AIL that the inode is already flush locked on the next push,
* and acquires a hold on the buffer to ensure that it isn't reclaimed before
* dirty data makes it to disk.
*/
STATIC void
xfs_inode_item_error(
struct xfs_log_item *lip,
struct xfs_buf *bp)
{
ASSERT(xfs_isiflocked(INODE_ITEM(lip)->ili_inode));
xfs_set_li_failed(lip, bp);
}
STATIC uint
xfs_inode_item_push(
struct xfs_log_item *lip,
@ -484,13 +502,28 @@ xfs_inode_item_push(
{
struct xfs_inode_log_item *iip = INODE_ITEM(lip);
struct xfs_inode *ip = iip->ili_inode;
struct xfs_buf *bp = NULL;
struct xfs_buf *bp = lip->li_buf;
uint rval = XFS_ITEM_SUCCESS;
int error;
if (xfs_ipincount(ip) > 0)
return XFS_ITEM_PINNED;
/*
* The buffer containing this item failed to be written back
* previously. Resubmit the buffer for IO.
*/
if (lip->li_flags & XFS_LI_FAILED) {
if (!xfs_buf_trylock(bp))
return XFS_ITEM_LOCKED;
if (!xfs_buf_resubmit_failed_buffers(bp, lip, buffer_list))
rval = XFS_ITEM_FLUSHING;
xfs_buf_unlock(bp);
return rval;
}
if (!xfs_ilock_nowait(ip, XFS_ILOCK_SHARED))
return XFS_ITEM_LOCKED;
@ -622,7 +655,8 @@ static const struct xfs_item_ops xfs_inode_item_ops = {
.iop_unlock = xfs_inode_item_unlock,
.iop_committed = xfs_inode_item_committed,
.iop_push = xfs_inode_item_push,
.iop_committing = xfs_inode_item_committing
.iop_committing = xfs_inode_item_committing,
.iop_error = xfs_inode_item_error
};
@ -710,7 +744,8 @@ xfs_iflush_done(
* the AIL lock.
*/
iip = INODE_ITEM(blip);
if (iip->ili_logged && blip->li_lsn == iip->ili_flush_lsn)
if ((iip->ili_logged && blip->li_lsn == iip->ili_flush_lsn) ||
lip->li_flags & XFS_LI_FAILED)
need_ail++;
blip = next;
@ -718,7 +753,8 @@ xfs_iflush_done(
/* make sure we capture the state of the initial inode. */
iip = INODE_ITEM(lip);
if (iip->ili_logged && lip->li_lsn == iip->ili_flush_lsn)
if ((iip->ili_logged && lip->li_lsn == iip->ili_flush_lsn) ||
lip->li_flags & XFS_LI_FAILED)
need_ail++;
/*
@ -739,6 +775,9 @@ xfs_iflush_done(
if (INODE_ITEM(blip)->ili_logged &&
blip->li_lsn == INODE_ITEM(blip)->ili_flush_lsn)
mlip_changed |= xfs_ail_delete_one(ailp, blip);
else {
xfs_clear_li_failed(blip);
}
}
if (mlip_changed) {

41
fs/xfs/xfs_ioctl.c
View File

@ -931,16 +931,15 @@ xfs_ioc_fsgetxattr(
return 0;
}
STATIC void
xfs_set_diflags(
STATIC uint16_t
xfs_flags2diflags(
struct xfs_inode *ip,
unsigned int xflags)
{
unsigned int di_flags;
uint64_t di_flags2;
/* can't set PREALLOC this way, just preserve it */
di_flags = (ip->i_d.di_flags & XFS_DIFLAG_PREALLOC);
uint16_t di_flags =
(ip->i_d.di_flags & XFS_DIFLAG_PREALLOC);
if (xflags & FS_XFLAG_IMMUTABLE)
di_flags |= XFS_DIFLAG_IMMUTABLE;
if (xflags & FS_XFLAG_APPEND)
@ -970,19 +969,24 @@ xfs_set_diflags(
if (xflags & FS_XFLAG_EXTSIZE)
di_flags |= XFS_DIFLAG_EXTSIZE;
}
ip->i_d.di_flags = di_flags;
/* diflags2 only valid for v3 inodes. */
if (ip->i_d.di_version < 3)
return;
return di_flags;
}
STATIC uint64_t
xfs_flags2diflags2(
struct xfs_inode *ip,
unsigned int xflags)
{
uint64_t di_flags2 =
(ip->i_d.di_flags2 & XFS_DIFLAG2_REFLINK);
di_flags2 = (ip->i_d.di_flags2 & XFS_DIFLAG2_REFLINK);
if (xflags & FS_XFLAG_DAX)
di_flags2 |= XFS_DIFLAG2_DAX;
if (xflags & FS_XFLAG_COWEXTSIZE)
di_flags2 |= XFS_DIFLAG2_COWEXTSIZE;
ip->i_d.di_flags2 = di_flags2;
return di_flags2;
}
STATIC void
@ -1008,11 +1012,12 @@ xfs_diflags_to_linux(
inode->i_flags |= S_NOATIME;
else
inode->i_flags &= ~S_NOATIME;
#if 0 /* disabled until the flag switching races are sorted out */
if (xflags & FS_XFLAG_DAX)
inode->i_flags |= S_DAX;
else
inode->i_flags &= ~S_DAX;
#endif
}
static int
@ -1022,6 +1027,7 @@ xfs_ioctl_setattr_xflags(
struct fsxattr *fa)
{
struct xfs_mount *mp = ip->i_mount;
uint64_t di_flags2;
/* Can't change realtime flag if any extents are allocated. */
if ((ip->i_d.di_nextents || ip->i_delayed_blks) &&
@ -1052,7 +1058,14 @@ xfs_ioctl_setattr_xflags(
!capable(CAP_LINUX_IMMUTABLE))
return -EPERM;
xfs_set_diflags(ip, fa->fsx_xflags);
/* diflags2 only valid for v3 inodes. */
di_flags2 = xfs_flags2diflags2(ip, fa->fsx_xflags);
if (di_flags2 && ip->i_d.di_version < 3)
return -EINVAL;
ip->i_d.di_flags = xfs_flags2diflags(ip, fa->fsx_xflags);
ip->i_d.di_flags2 = di_flags2;
xfs_diflags_to_linux(ip);
xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_CHG);
xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);

10
fs/xfs/xfs_iomap.c
View File

@ -274,7 +274,7 @@ xfs_iomap_write_direct(
/*
* Complete the transaction
*/
error = xfs_defer_finish(&tp, &dfops, NULL);
error = xfs_defer_finish(&tp, &dfops);
if (error)
goto out_bmap_cancel;
@ -520,7 +520,6 @@ xfs_file_iomap_begin_delay(
struct inode *inode,
loff_t offset,
loff_t count,
unsigned flags,
struct iomap *iomap)
{
struct xfs_inode *ip = XFS_I(inode);
@ -784,7 +783,7 @@ xfs_iomap_write_allocate(
if (error)
goto trans_cancel;
error = xfs_defer_finish(&tp, &dfops, NULL);
error = xfs_defer_finish(&tp, &dfops);
if (error)
goto trans_cancel;
@ -906,7 +905,7 @@ xfs_iomap_write_unwritten(
xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
}
error = xfs_defer_finish(&tp, &dfops, NULL);
error = xfs_defer_finish(&tp, &dfops);
if (error)
goto error_on_bmapi_transaction;
@ -984,8 +983,7 @@ xfs_file_iomap_begin(
if (((flags & (IOMAP_WRITE | IOMAP_DIRECT)) == IOMAP_WRITE) &&
!IS_DAX(inode) && !xfs_get_extsz_hint(ip)) {
/* Reserve delalloc blocks for regular writeback. */
return xfs_file_iomap_begin_delay(inode, offset, length, flags,
iomap);
return xfs_file_iomap_begin_delay(inode, offset, length, iomap);
}
if (need_excl_ilock(ip, flags)) {

2
fs/xfs/xfs_iops.c
View File

@ -817,7 +817,7 @@ xfs_vn_setattr_nonsize(
* Caution: The caller of this function is responsible for calling
* setattr_prepare() or otherwise verifying the change is fine.
*/
int
STATIC int
xfs_setattr_size(
struct xfs_inode *ip,
struct iattr *iattr)

33
fs/xfs/xfs_log.c
View File

@ -743,10 +743,14 @@ xfs_log_mount_finish(
struct xfs_mount *mp)
{
int error = 0;
bool readonly = (mp->m_flags & XFS_MOUNT_RDONLY);
if (mp->m_flags & XFS_MOUNT_NORECOVERY) {
ASSERT(mp->m_flags & XFS_MOUNT_RDONLY);
return 0;
} else if (readonly) {
/* Allow unlinked processing to proceed */
mp->m_flags &= ~XFS_MOUNT_RDONLY;
}
/*
@ -757,12 +761,27 @@ xfs_log_mount_finish(
* inodes. Turn it off immediately after recovery finishes
* so that we don't leak the quota inodes if subsequent mount
* activities fail.
*
* We let all inodes involved in redo item processing end up on
* the LRU instead of being evicted immediately so that if we do
* something to an unlinked inode, the irele won't cause
* premature truncation and freeing of the inode, which results
* in log recovery failure. We have to evict the unreferenced
* lru inodes after clearing MS_ACTIVE because we don't
* otherwise clean up the lru if there's a subsequent failure in
* xfs_mountfs, which leads to us leaking the inodes if nothing
* else (e.g. quotacheck) references the inodes before the
* mount failure occurs.
*/
mp->m_super->s_flags |= MS_ACTIVE;
error = xlog_recover_finish(mp->m_log);
if (!error)
xfs_log_work_queue(mp);
mp->m_super->s_flags &= ~MS_ACTIVE;
evict_inodes(mp->m_super);
if (readonly)
mp->m_flags |= XFS_MOUNT_RDONLY;
return error;
}
@ -812,11 +831,14 @@ xfs_log_unmount_write(xfs_mount_t *mp)
int error;
/*
* Don't write out unmount record on read-only mounts.
* Don't write out unmount record on norecovery mounts or ro devices.
* Or, if we are doing a forced umount (typically because of IO errors).
*/
if (mp->m_flags & XFS_MOUNT_RDONLY)
if (mp->m_flags & XFS_MOUNT_NORECOVERY ||
xfs_readonly_buftarg(log->l_mp->m_logdev_targp)) {
ASSERT(mp->m_flags & XFS_MOUNT_RDONLY);
return 0;
}
error = _xfs_log_force(mp, XFS_LOG_SYNC, NULL);
ASSERT(error || !(XLOG_FORCED_SHUTDOWN(log)));
@ -3353,8 +3375,6 @@ maybe_sleep:
*/
if (iclog->ic_state & XLOG_STATE_IOERROR)
return -EIO;
if (log_flushed)
*log_flushed = 1;
} else {
no_sleep:
@ -3458,8 +3478,6 @@ try_again:
xlog_wait(&iclog->ic_prev->ic_write_wait,
&log->l_icloglock);
if (log_flushed)
*log_flushed = 1;
already_slept = 1;
goto try_again;
}
@ -3493,9 +3511,6 @@ try_again:
*/
if (iclog->ic_state & XLOG_STATE_IOERROR)
return -EIO;
if (log_flushed)
*log_flushed = 1;
} else { /* just return */
spin_unlock(&log->l_icloglock);
}

167
fs/xfs/xfs_log_recover.c
View File

@ -1029,61 +1029,106 @@ out_error:
}
/*
* Check the log tail for torn writes. This is required when torn writes are
* detected at the head and the head had to be walked back to a previous record.
* The tail of the previous record must now be verified to ensure the torn
* writes didn't corrupt the previous tail.
* Calculate distance from head to tail (i.e., unused space in the log).
*/
static inline int
xlog_tail_distance(
struct xlog *log,
xfs_daddr_t head_blk,
xfs_daddr_t tail_blk)
{
if (head_blk < tail_blk)
return tail_blk - head_blk;
return tail_blk + (log->l_logBBsize - head_blk);
}
/*
* Verify the log tail. This is particularly important when torn or incomplete
* writes have been detected near the front of the log and the head has been
* walked back accordingly.
*
* Return an error if CRC verification fails as recovery cannot proceed.
* We also have to handle the case where the tail was pinned and the head
* blocked behind the tail right before a crash. If the tail had been pushed
* immediately prior to the crash and the subsequent checkpoint was only
* partially written, it's possible it overwrote the last referenced tail in the
* log with garbage. This is not a coherency problem because the tail must have
* been pushed before it can be overwritten, but appears as log corruption to
* recovery because we have no way to know the tail was updated if the
* subsequent checkpoint didn't write successfully.
*
* Therefore, CRC check the log from tail to head. If a failure occurs and the
* offending record is within max iclog bufs from the head, walk the tail
* forward and retry until a valid tail is found or corruption is detected out
* of the range of a possible overwrite.
*/
STATIC int
xlog_verify_tail(
struct xlog *log,
xfs_daddr_t head_blk,
xfs_daddr_t tail_blk)
xfs_daddr_t *tail_blk,
int hsize)
{
struct xlog_rec_header *thead;
struct xfs_buf *bp;
xfs_daddr_t first_bad;
int count;
int error = 0;
bool wrapped;
xfs_daddr_t tmp_head;
xfs_daddr_t tmp_tail;
xfs_daddr_t orig_tail = *tail_blk;
bp = xlog_get_bp(log, 1);
if (!bp)
return -ENOMEM;
/*
* Seek XLOG_MAX_ICLOGS + 1 records past the current tail record to get
* a temporary head block that points after the last possible
* concurrently written record of the tail.
* Make sure the tail points to a record (returns positive count on
* success).
*/
count = xlog_seek_logrec_hdr(log, head_blk, tail_blk,
XLOG_MAX_ICLOGS + 1, bp, &tmp_head, &thead,
&wrapped);
if (count < 0) {
error = count;
error = xlog_seek_logrec_hdr(log, head_blk, *tail_blk, 1, bp,
&tmp_tail, &thead, &wrapped);
if (error < 0)
goto out;
if (*tail_blk != tmp_tail)
*tail_blk = tmp_tail;
/*
* Run a CRC check from the tail to the head. We can't just check
* MAX_ICLOGS records past the tail because the tail may point to stale
* blocks cleared during the search for the head/tail. These blocks are
* overwritten with zero-length records and thus record count is not a
* reliable indicator of the iclog state before a crash.
*/
first_bad = 0;
error = xlog_do_recovery_pass(log, head_blk, *tail_blk,
XLOG_RECOVER_CRCPASS, &first_bad);
while ((error == -EFSBADCRC || error == -EFSCORRUPTED) && first_bad) {
int tail_distance;
/*
* Is corruption within range of the head? If so, retry from
* the next record. Otherwise return an error.
*/
tail_distance = xlog_tail_distance(log, head_blk, first_bad);
if (tail_distance > BTOBB(XLOG_MAX_ICLOGS * hsize))
break;
/* skip to the next record; returns positive count on success */
error = xlog_seek_logrec_hdr(log, head_blk, first_bad, 2, bp,
&tmp_tail, &thead, &wrapped);
if (error < 0)
goto out;
*tail_blk = tmp_tail;
first_bad = 0;
error = xlog_do_recovery_pass(log, head_blk, *tail_blk,
XLOG_RECOVER_CRCPASS, &first_bad);
}
/*
* If the call above didn't find XLOG_MAX_ICLOGS + 1 records, we ran
* into the actual log head. tmp_head points to the start of the record
* so update it to the actual head block.
*/
if (count < XLOG_MAX_ICLOGS + 1)
tmp_head = head_blk;
/*
* We now have a tail and temporary head block that covers at least
* XLOG_MAX_ICLOGS records from the tail. We need to verify that these
* records were completely written. Run a CRC verification pass from
* tail to head and return the result.
*/
error = xlog_do_recovery_pass(log, tmp_head, tail_blk,
XLOG_RECOVER_CRCPASS, &first_bad);
if (!error && *tail_blk != orig_tail)
xfs_warn(log->l_mp,
"Tail block (0x%llx) overwrite detected. Updated to 0x%llx",
orig_tail, *tail_blk);
out:
xlog_put_bp(bp);
return error;
@ -1143,7 +1188,7 @@ xlog_verify_head(
*/
error = xlog_do_recovery_pass(log, *head_blk, tmp_rhead_blk,
XLOG_RECOVER_CRCPASS, &first_bad);
if (error == -EFSBADCRC) {
if ((error == -EFSBADCRC || error == -EFSCORRUPTED) && first_bad) {
/*
* We've hit a potential torn write. Reset the error and warn
* about it.
@ -1183,31 +1228,12 @@ xlog_verify_head(
ASSERT(0);
return 0;
}
/*
* Now verify the tail based on the updated head. This is
* required because the torn writes trimmed from the head could
* have been written over the tail of a previous record. Return
* any errors since recovery cannot proceed if the tail is
* corrupt.
*
* XXX: This leaves a gap in truly robust protection from torn
* writes in the log. If the head is behind the tail, the tail
* pushes forward to create some space and then a crash occurs
* causing the writes into the previous record's tail region to
* tear, log recovery isn't able to recover.
*
* How likely is this to occur? If possible, can we do something
* more intelligent here? Is it safe to push the tail forward if
* we can determine that the tail is within the range of the
* torn write (e.g., the kernel can only overwrite the tail if
* it has actually been pushed forward)? Alternatively, could we
* somehow prevent this condition at runtime?
*/
error = xlog_verify_tail(log, *head_blk, *tail_blk);
}
if (error)
return error;
return error;
return xlog_verify_tail(log, *head_blk, tail_blk,
be32_to_cpu((*rhead)->h_size));
}
/*
@ -4801,12 +4827,16 @@ xlog_recover_process_intents(
int error = 0;
struct xfs_ail_cursor cur;
struct xfs_ail *ailp;
#if defined(DEBUG) || defined(XFS_WARN)
xfs_lsn_t last_lsn;
#endif
ailp = log->l_ailp;
spin_lock(&ailp->xa_lock);
lip = xfs_trans_ail_cursor_first(ailp, &cur, 0);
#if defined(DEBUG) || defined(XFS_WARN)
last_lsn = xlog_assign_lsn(log->l_curr_cycle, log->l_curr_block);
#endif
while (lip != NULL) {
/*
* We're done when we see something other than an intent.
@ -5218,7 +5248,7 @@ xlog_do_recovery_pass(
xfs_daddr_t *first_bad) /* out: first bad log rec */
{
xlog_rec_header_t *rhead;
xfs_daddr_t blk_no;
xfs_daddr_t blk_no, rblk_no;
xfs_daddr_t rhead_blk;
char *offset;
xfs_buf_t *hbp, *dbp;
@ -5231,7 +5261,7 @@ xlog_do_recovery_pass(
LIST_HEAD (buffer_list);
ASSERT(head_blk != tail_blk);
rhead_blk = 0;
blk_no = rhead_blk = tail_blk;
for (i = 0; i < XLOG_RHASH_SIZE; i++)
INIT_HLIST_HEAD(&rhash[i]);
@ -5309,7 +5339,6 @@ xlog_do_recovery_pass(
}
memset(rhash, 0, sizeof(rhash));
blk_no = rhead_blk = tail_blk;
if (tail_blk > head_blk) {
/*
* Perform recovery around the end of the physical log.
@ -5371,9 +5400,19 @@ xlog_do_recovery_pass(
bblks = (int)BTOBB(be32_to_cpu(rhead->h_len));
blk_no += hblks;
/* Read in data for log record */
if (blk_no + bblks <= log->l_logBBsize) {
error = xlog_bread(log, blk_no, bblks, dbp,
/*
* Read the log record data in multiple reads if it
* wraps around the end of the log. Note that if the
* header already wrapped, blk_no could point past the
* end of the log. The record data is contiguous in
* that case.
*/
if (blk_no + bblks <= log->l_logBBsize ||
blk_no >= log->l_logBBsize) {
/* mod blk_no in case the header wrapped and
* pushed it beyond the end of the log */
rblk_no = do_mod(blk_no, log->l_logBBsize);
error = xlog_bread(log, rblk_no, bblks, dbp,
&offset);
if (error)
goto bread_err2;
@ -5563,6 +5602,8 @@ xlog_do_recover(
xfs_buf_t *bp;
xfs_sb_t *sbp;
trace_xfs_log_recover(log, head_blk, tail_blk);
/*
* First replay the images in the log.
*/

44
fs/xfs/xfs_qm.c
View File

@ -31,6 +31,7 @@
#include "xfs_error.h"
#include "xfs_bmap.h"
#include "xfs_bmap_btree.h"
#include "xfs_bmap_util.h"
#include "xfs_trans.h"
#include "xfs_trans_space.h"
#include "xfs_qm.h"
@ -1120,31 +1121,6 @@ xfs_qm_quotacheck_dqadjust(
return 0;
}
STATIC int
xfs_qm_get_rtblks(
xfs_inode_t *ip,
xfs_qcnt_t *O_rtblks)
{
xfs_filblks_t rtblks; /* total rt blks */
xfs_extnum_t idx; /* extent record index */
xfs_ifork_t *ifp; /* inode fork pointer */
xfs_extnum_t nextents; /* number of extent entries */
int error;
ASSERT(XFS_IS_REALTIME_INODE(ip));
ifp = XFS_IFORK_PTR(ip, XFS_DATA_FORK);
if (!(ifp->if_flags & XFS_IFEXTENTS)) {
if ((error = xfs_iread_extents(NULL, ip, XFS_DATA_FORK)))
return error;
}
rtblks = 0;
nextents = xfs_iext_count(ifp);
for (idx = 0; idx < nextents; idx++)
rtblks += xfs_bmbt_get_blockcount(xfs_iext_get_ext(ifp, idx));
*O_rtblks = (xfs_qcnt_t)rtblks;
return 0;
}
/*
* callback routine supplied to bulkstat(). Given an inumber, find its
* dquots and update them to account for resources taken by that inode.
@ -1160,7 +1136,8 @@ xfs_qm_dqusage_adjust(
int *res) /* result code value */
{
xfs_inode_t *ip;
xfs_qcnt_t nblks, rtblks = 0;
xfs_qcnt_t nblks;
xfs_filblks_t rtblks = 0; /* total rt blks */
int error;
ASSERT(XFS_IS_QUOTA_RUNNING(mp));
@ -1190,12 +1167,15 @@ xfs_qm_dqusage_adjust(
ASSERT(ip->i_delayed_blks == 0);
if (XFS_IS_REALTIME_INODE(ip)) {
/*
* Walk thru the extent list and count the realtime blocks.
*/
error = xfs_qm_get_rtblks(ip, &rtblks);
if (error)
goto error0;
struct xfs_ifork *ifp = XFS_IFORK_PTR(ip, XFS_DATA_FORK);
if (!(ifp->if_flags & XFS_IFEXTENTS)) {
error = xfs_iread_extents(NULL, ip, XFS_DATA_FORK);
if (error)
goto error0;
}
xfs_bmap_count_leaves(ifp, &rtblks);
}
nblks = (xfs_qcnt_t)ip->i_d.di_nblocks - rtblks;

2
fs/xfs/xfs_refcount_item.c
View File

@ -525,7 +525,7 @@ xfs_cui_recover(
}
xfs_refcount_finish_one_cleanup(tp, rcur, error);
error = xfs_defer_finish(&tp, &dfops, NULL);
error = xfs_defer_finish(&tp, &dfops);
if (error)
goto abort_defer;
set_bit(XFS_CUI_RECOVERED, &cuip->cui_flags);

11
fs/xfs/xfs_reflink.c
View File

@ -464,7 +464,7 @@ retry:
goto out_bmap_cancel;
/* Finish up. */
error = xfs_defer_finish(&tp, &dfops, NULL);
error = xfs_defer_finish(&tp, &dfops);
if (error)
goto out_bmap_cancel;
@ -602,7 +602,8 @@ xfs_reflink_cancel_cow_blocks(
-(long)del.br_blockcount);
/* Roll the transaction */
error = xfs_defer_finish(tpp, &dfops, ip);
xfs_defer_ijoin(&dfops, ip);
error = xfs_defer_finish(tpp, &dfops);
if (error) {
xfs_defer_cancel(&dfops);
break;
@ -791,7 +792,8 @@ xfs_reflink_end_cow(
/* Remove the mapping from the CoW fork. */
xfs_bmap_del_extent_cow(ip, &idx, &got, &del);
error = xfs_defer_finish(&tp, &dfops, ip);
xfs_defer_ijoin(&dfops, ip);
error = xfs_defer_finish(&tp, &dfops);
if (error)
goto out_defer;
next_extent:
@ -1152,7 +1154,8 @@ xfs_reflink_remap_extent(
next_extent:
/* Process all the deferred stuff. */
error = xfs_defer_finish(&tp, &dfops, ip);
xfs_defer_ijoin(&dfops, ip);
error = xfs_defer_finish(&tp, &dfops);
if (error)
goto out_defer;
}

2
fs/xfs/xfs_rtalloc.c
View File

@ -810,7 +810,7 @@ xfs_growfs_rt_alloc(
/*
* Free any blocks freed up in the transaction, then commit.
*/
error = xfs_defer_finish(&tp, &dfops, NULL);
error = xfs_defer_finish(&tp, &dfops);
if (error)
goto out_bmap_cancel;
error = xfs_trans_commit(tp);

2
fs/xfs/xfs_super.c
View File

@ -1220,7 +1220,7 @@ xfs_test_remount_options(
tmp_mp->m_super = sb;
error = xfs_parseargs(tmp_mp, options);
xfs_free_fsname(tmp_mp);
kfree(tmp_mp);
kmem_free(tmp_mp);
return error;
}

5
fs/xfs/xfs_symlink.c
View File

@ -378,7 +378,7 @@ xfs_symlink(
xfs_trans_set_sync(tp);
}
error = xfs_defer_finish(&tp, &dfops, NULL);
error = xfs_defer_finish(&tp, &dfops);
if (error)
goto out_bmap_cancel;
@ -497,7 +497,8 @@ xfs_inactive_symlink_rmt(
/*
* Commit the first transaction. This logs the EFI and the inode.
*/
error = xfs_defer_finish(&tp, &dfops, ip);
xfs_defer_ijoin(&dfops, ip);
error = xfs_defer_finish(&tp, &dfops);
if (error)
goto error_bmap_cancel;
/*

48
fs/xfs/xfs_trace.h
View File

@ -517,7 +517,6 @@ DEFINE_BUF_ITEM_EVENT(xfs_buf_item_size);
DEFINE_BUF_ITEM_EVENT(xfs_buf_item_size_ordered);
DEFINE_BUF_ITEM_EVENT(xfs_buf_item_size_stale);
DEFINE_BUF_ITEM_EVENT(xfs_buf_item_format);
DEFINE_BUF_ITEM_EVENT(xfs_buf_item_format_ordered);
DEFINE_BUF_ITEM_EVENT(xfs_buf_item_format_stale);
DEFINE_BUF_ITEM_EVENT(xfs_buf_item_ordered);
DEFINE_BUF_ITEM_EVENT(xfs_buf_item_pin);
@ -689,11 +688,34 @@ DEFINE_INODE_EVENT(xfs_inode_set_cowblocks_tag);
DEFINE_INODE_EVENT(xfs_inode_clear_cowblocks_tag);
DEFINE_INODE_EVENT(xfs_inode_free_cowblocks_invalid);
DEFINE_INODE_EVENT(xfs_filemap_fault);
DEFINE_INODE_EVENT(xfs_filemap_huge_fault);
DEFINE_INODE_EVENT(xfs_filemap_page_mkwrite);
DEFINE_INODE_EVENT(xfs_filemap_pfn_mkwrite);
TRACE_EVENT(xfs_filemap_fault,
TP_PROTO(struct xfs_inode *ip, enum page_entry_size pe_size,
bool write_fault),
TP_ARGS(ip, pe_size, write_fault),
TP_STRUCT__entry(
__field(dev_t, dev)
__field(xfs_ino_t, ino)
__field(enum page_entry_size, pe_size)
__field(bool, write_fault)
),
TP_fast_assign(
__entry->dev = VFS_I(ip)->i_sb->s_dev;
__entry->ino = ip->i_ino;
__entry->pe_size = pe_size;
__entry->write_fault = write_fault;
),
TP_printk("dev %d:%d ino 0x%llx %s write_fault %d",
MAJOR(__entry->dev), MINOR(__entry->dev),
__entry->ino,
__print_symbolic(__entry->pe_size,
{ PE_SIZE_PTE, "PTE" },
{ PE_SIZE_PMD, "PMD" },
{ PE_SIZE_PUD, "PUD" }),
__entry->write_fault)
)
DECLARE_EVENT_CLASS(xfs_iref_class,
TP_PROTO(struct xfs_inode *ip, unsigned long caller_ip),
TP_ARGS(ip, caller_ip),
@ -1963,6 +1985,24 @@ DEFINE_EVENT(xfs_swap_extent_class, name, \
DEFINE_SWAPEXT_EVENT(xfs_swap_extent_before);
DEFINE_SWAPEXT_EVENT(xfs_swap_extent_after);
TRACE_EVENT(xfs_log_recover,
TP_PROTO(struct xlog *log, xfs_daddr_t headblk, xfs_daddr_t tailblk),
TP_ARGS(log, headblk, tailblk),
TP_STRUCT__entry(
__field(dev_t, dev)
__field(xfs_daddr_t, headblk)
__field(xfs_daddr_t, tailblk)
),
TP_fast_assign(
__entry->dev = log->l_mp->m_super->s_dev;
__entry->headblk = headblk;
__entry->tailblk = tailblk;
),
TP_printk("dev %d:%d headblk 0x%llx tailblk 0x%llx",
MAJOR(__entry->dev), MINOR(__entry->dev), __entry->headblk,
__entry->tailblk)
)
TRACE_EVENT(xfs_log_recover_record,
TP_PROTO(struct xlog *log, struct xlog_rec_header *rhead, int pass),
TP_ARGS(log, rhead, pass),

28
fs/xfs/xfs_trans.c
View File

@ -1035,25 +1035,18 @@ xfs_trans_cancel(
*/
int
xfs_trans_roll(
struct xfs_trans **tpp,
struct xfs_inode *dp)
struct xfs_trans **tpp)
{
struct xfs_trans *trans;
struct xfs_trans *trans = *tpp;
struct xfs_trans_res tres;
int error;
/*
* Ensure that the inode is always logged.
*/
trans = *tpp;
if (dp)
xfs_trans_log_inode(trans, dp, XFS_ILOG_CORE);
/*
* Copy the critical parameters from one trans to the next.
*/
tres.tr_logres = trans->t_log_res;
tres.tr_logcount = trans->t_log_count;
*tpp = xfs_trans_dup(trans);
/*
@ -1067,10 +1060,8 @@ xfs_trans_roll(
if (error)
return error;
trans = *tpp;
/*
* Reserve space in the log for th next transaction.
* Reserve space in the log for the next transaction.
* This also pushes items in the "AIL", the list of logged items,
* out to disk if they are taking up space at the tail of the log
* that we want to use. This requires that either nothing be locked
@ -1078,14 +1069,5 @@ xfs_trans_roll(
* the prior and the next transactions.
*/
tres.tr_logflags = XFS_TRANS_PERM_LOG_RES;
error = xfs_trans_reserve(trans, &tres, 0, 0);
/*
* Ensure that the inode is in the new transaction and locked.
*/
if (error)
return error;
if (dp)
xfs_trans_ijoin(trans, dp, 0);
return 0;
return xfs_trans_reserve(*tpp, &tres, 0, 0);
}

17
fs/xfs/xfs_trans.h
View File

@ -49,6 +49,7 @@ typedef struct xfs_log_item {
struct xfs_ail *li_ailp; /* ptr to AIL */
uint li_type; /* item type */
uint li_flags; /* misc flags */
struct xfs_buf *li_buf; /* real buffer pointer */
struct xfs_log_item *li_bio_list; /* buffer item list */
void (*li_cb)(struct xfs_buf *,
struct xfs_log_item *);
@ -64,11 +65,13 @@ typedef struct xfs_log_item {
} xfs_log_item_t;
#define XFS_LI_IN_AIL 0x1
#define XFS_LI_ABORTED 0x2
#define XFS_LI_ABORTED 0x2
#define XFS_LI_FAILED 0x4
#define XFS_LI_FLAGS \
{ XFS_LI_IN_AIL, "IN_AIL" }, \
{ XFS_LI_ABORTED, "ABORTED" }
{ XFS_LI_ABORTED, "ABORTED" }, \
{ XFS_LI_FAILED, "FAILED" }
struct xfs_item_ops {
void (*iop_size)(xfs_log_item_t *, int *, int *);
@ -79,6 +82,7 @@ struct xfs_item_ops {
void (*iop_unlock)(xfs_log_item_t *);
xfs_lsn_t (*iop_committed)(xfs_log_item_t *, xfs_lsn_t);
void (*iop_committing)(xfs_log_item_t *, xfs_lsn_t);
void (*iop_error)(xfs_log_item_t *, xfs_buf_t *);
};
void xfs_log_item_init(struct xfs_mount *mp, struct xfs_log_item *item,
@ -208,12 +212,14 @@ void xfs_trans_bhold_release(xfs_trans_t *, struct xfs_buf *);
void xfs_trans_binval(xfs_trans_t *, struct xfs_buf *);
void xfs_trans_inode_buf(xfs_trans_t *, struct xfs_buf *);
void xfs_trans_stale_inode_buf(xfs_trans_t *, struct xfs_buf *);
void xfs_trans_ordered_buf(xfs_trans_t *, struct xfs_buf *);
bool xfs_trans_ordered_buf(xfs_trans_t *, struct xfs_buf *);
void xfs_trans_dquot_buf(xfs_trans_t *, struct xfs_buf *, uint);
void xfs_trans_inode_alloc_buf(xfs_trans_t *, struct xfs_buf *);
void xfs_trans_ichgtime(struct xfs_trans *, struct xfs_inode *, int);
void xfs_trans_ijoin(struct xfs_trans *, struct xfs_inode *, uint);
void xfs_trans_log_buf(xfs_trans_t *, struct xfs_buf *, uint, uint);
void xfs_trans_log_buf(struct xfs_trans *, struct xfs_buf *, uint,
uint);
void xfs_trans_dirty_buf(struct xfs_trans *, struct xfs_buf *);
void xfs_trans_log_inode(xfs_trans_t *, struct xfs_inode *, uint);
void xfs_extent_free_init_defer_op(void);
@ -224,7 +230,8 @@ int xfs_trans_free_extent(struct xfs_trans *,
struct xfs_efd_log_item *, xfs_fsblock_t,
xfs_extlen_t, struct xfs_owner_info *);
int xfs_trans_commit(struct xfs_trans *);
int xfs_trans_roll(struct xfs_trans **, struct xfs_inode *);
int xfs_trans_roll(struct xfs_trans **);
int xfs_trans_roll_inode(struct xfs_trans **, struct xfs_inode *);
void xfs_trans_cancel(xfs_trans_t *);
int xfs_trans_ail_init(struct xfs_mount *);
void xfs_trans_ail_destroy(struct xfs_mount *);

20
fs/xfs/xfs_trans_ail.c
View File

@ -325,6 +325,21 @@ xfs_ail_delete(
xfs_trans_ail_cursor_clear(ailp, lip);
}
static inline uint
xfsaild_push_item(
struct xfs_ail *ailp,
struct xfs_log_item *lip)
{
/*
* If log item pinning is enabled, skip the push and track the item as
* pinned. This can help induce head-behind-tail conditions.
*/
if (XFS_TEST_ERROR(false, ailp->xa_mount, XFS_ERRTAG_LOG_ITEM_PIN))
return XFS_ITEM_PINNED;
return lip->li_ops->iop_push(lip, &ailp->xa_buf_list);
}
static long
xfsaild_push(
struct xfs_ail *ailp)
@ -382,7 +397,7 @@ xfsaild_push(
* rely on the AIL cursor implementation to be able to deal with
* the dropped lock.
*/
lock_result = lip->li_ops->iop_push(lip, &ailp->xa_buf_list);
lock_result = xfsaild_push_item(ailp, lip);
switch (lock_result) {
case XFS_ITEM_SUCCESS:
XFS_STATS_INC(mp, xs_push_ail_success);
@ -687,12 +702,13 @@ xfs_trans_ail_update_bulk(
bool
xfs_ail_delete_one(
struct xfs_ail *ailp,
struct xfs_log_item *lip)
struct xfs_log_item *lip)
{
struct xfs_log_item *mlip = xfs_ail_min(ailp);
trace_xfs_ail_delete(lip, mlip->li_lsn, lip->li_lsn);
xfs_ail_delete(ailp, lip);
xfs_clear_li_failed(lip);
lip->li_flags &= ~XFS_LI_IN_AIL;
lip->li_lsn = 0;

79
fs/xfs/xfs_trans_buf.c
View File

@ -435,7 +435,7 @@ xfs_trans_brelse(xfs_trans_t *tp,
if (XFS_FORCED_SHUTDOWN(tp->t_mountp) && freed) {
xfs_trans_ail_remove(&bip->bli_item, SHUTDOWN_LOG_IO_ERROR);
xfs_buf_item_relse(bp);
} else if (!xfs_buf_item_dirty(bip)) {
} else if (!(bip->bli_flags & XFS_BLI_DIRTY)) {
/***
ASSERT(bp->b_pincount == 0);
***/
@ -493,25 +493,17 @@ xfs_trans_bhold_release(xfs_trans_t *tp,
}
/*
* This is called to mark bytes first through last inclusive of the given
* buffer as needing to be logged when the transaction is committed.
* The buffer must already be associated with the given transaction.
*
* First and last are numbers relative to the beginning of this buffer,
* so the first byte in the buffer is numbered 0 regardless of the
* value of b_blkno.
* Mark a buffer dirty in the transaction.
*/
void
xfs_trans_log_buf(xfs_trans_t *tp,
xfs_buf_t *bp,
uint first,
uint last)
xfs_trans_dirty_buf(
struct xfs_trans *tp,
struct xfs_buf *bp)
{
xfs_buf_log_item_t *bip = bp->b_fspriv;
struct xfs_buf_log_item *bip = bp->b_fspriv;
ASSERT(bp->b_transp == tp);
ASSERT(bip != NULL);
ASSERT(first <= last && last < BBTOB(bp->b_length));
ASSERT(bp->b_iodone == NULL ||
bp->b_iodone == xfs_buf_iodone_callbacks);
@ -531,8 +523,6 @@ xfs_trans_log_buf(xfs_trans_t *tp,
bp->b_iodone = xfs_buf_iodone_callbacks;
bip->bli_item.li_cb = xfs_buf_iodone;
trace_xfs_trans_log_buf(bip);
/*
* If we invalidated the buffer within this transaction, then
* cancel the invalidation now that we're dirtying the buffer
@ -545,17 +535,37 @@ xfs_trans_log_buf(xfs_trans_t *tp,
bp->b_flags &= ~XBF_STALE;
bip->__bli_format.blf_flags &= ~XFS_BLF_CANCEL;
}
bip->bli_flags |= XFS_BLI_DIRTY | XFS_BLI_LOGGED;
tp->t_flags |= XFS_TRANS_DIRTY;
bip->bli_item.li_desc->lid_flags |= XFS_LID_DIRTY;
}
/*
* If we have an ordered buffer we are not logging any dirty range but
* it still needs to be marked dirty and that it has been logged.
*/
bip->bli_flags |= XFS_BLI_DIRTY | XFS_BLI_LOGGED;
if (!(bip->bli_flags & XFS_BLI_ORDERED))
xfs_buf_item_log(bip, first, last);
/*
* This is called to mark bytes first through last inclusive of the given
* buffer as needing to be logged when the transaction is committed.
* The buffer must already be associated with the given transaction.
*
* First and last are numbers relative to the beginning of this buffer,
* so the first byte in the buffer is numbered 0 regardless of the
* value of b_blkno.
*/
void
xfs_trans_log_buf(
struct xfs_trans *tp,
struct xfs_buf *bp,
uint first,
uint last)
{
struct xfs_buf_log_item *bip = bp->b_fspriv;
ASSERT(first <= last && last < BBTOB(bp->b_length));
ASSERT(!(bip->bli_flags & XFS_BLI_ORDERED));
xfs_trans_dirty_buf(tp, bp);
trace_xfs_trans_log_buf(bip);
xfs_buf_item_log(bip, first, last);
}
@ -708,14 +718,13 @@ xfs_trans_inode_alloc_buf(
}
/*
* Mark the buffer as ordered for this transaction. This means
* that the contents of the buffer are not recorded in the transaction
* but it is tracked in the AIL as though it was. This allows us
* to record logical changes in transactions rather than the physical
* changes we make to the buffer without changing writeback ordering
* constraints of metadata buffers.
* Mark the buffer as ordered for this transaction. This means that the contents
* of the buffer are not recorded in the transaction but it is tracked in the
* AIL as though it was. This allows us to record logical changes in
* transactions rather than the physical changes we make to the buffer without
* changing writeback ordering constraints of metadata buffers.
*/
void
bool
xfs_trans_ordered_buf(
struct xfs_trans *tp,
struct xfs_buf *bp)
@ -726,8 +735,18 @@ xfs_trans_ordered_buf(
ASSERT(bip != NULL);
ASSERT(atomic_read(&bip->bli_refcount) > 0);
if (xfs_buf_item_dirty_format(bip))
return false;
bip->bli_flags |= XFS_BLI_ORDERED;
trace_xfs_buf_item_ordered(bip);
/*
* We don't log a dirty range of an ordered buffer but it still needs
* to be marked dirty and that it has been logged.
*/
xfs_trans_dirty_buf(tp, bp);
return true;
}
/*

14
fs/xfs/xfs_trans_inode.c
View File

@ -134,3 +134,17 @@ xfs_trans_log_inode(
flags |= ip->i_itemp->ili_last_fields;
ip->i_itemp->ili_fields |= flags;
}
int
xfs_trans_roll_inode(
struct xfs_trans **tpp,
struct xfs_inode *ip)
{
int error;
xfs_trans_log_inode(*tpp, ip, XFS_ILOG_CORE);
error = xfs_trans_roll(tpp);
if (!error)
xfs_trans_ijoin(*tpp, ip, 0);
return error;
}

31
fs/xfs/xfs_trans_priv.h
View File

@ -164,4 +164,35 @@ xfs_trans_ail_copy_lsn(
*dst = *src;
}
#endif
static inline void
xfs_clear_li_failed(
struct xfs_log_item *lip)
{
struct xfs_buf *bp = lip->li_buf;
ASSERT(lip->li_flags & XFS_LI_IN_AIL);
lockdep_assert_held(&lip->li_ailp->xa_lock);
if (lip->li_flags & XFS_LI_FAILED) {
lip->li_flags &= ~XFS_LI_FAILED;
lip->li_buf = NULL;
xfs_buf_rele(bp);
}
}
static inline void
xfs_set_li_failed(
struct xfs_log_item *lip,
struct xfs_buf *bp)
{
lockdep_assert_held(&lip->li_ailp->xa_lock);
if (!(lip->li_flags & XFS_LI_FAILED)) {
xfs_buf_hold(bp);
lip->li_flags |= XFS_LI_FAILED;
lip->li_buf = bp;
}
}
#endif /* __XFS_TRANS_PRIV_H__ */

1
include/linux/fs.h
View File

@ -2837,6 +2837,7 @@ static inline void lockdep_annotate_inode_mutex_key(struct inode *inode) { };
#endif
extern void unlock_new_inode(struct inode *);
extern unsigned int get_next_ino(void);
extern void evict_inodes(struct super_block *sb);
extern void __iget(struct inode * inode);
extern void iget_failed(struct inode *);

2
include/uapi/linux/fsmap.h
View File

@ -96,7 +96,7 @@ fsmap_advance(
#define FMR_OF_EXTENT_MAP 0x4 /* segment = extent map */
#define FMR_OF_SHARED 0x8 /* segment = shared with another file */
#define FMR_OF_SPECIAL_OWNER 0x10 /* owner is a special value */
#define FMR_OF_LAST 0x20 /* segment is the last in the FS */
#define FMR_OF_LAST 0x20 /* segment is the last in the dataset */
/* Each FS gets to define its own special owner codes. */
#define FMR_OWNER(type, code) (((__u64)type << 32) | \