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xfs: simplify iext overflow checking and upgrade

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Currently the calls to xfs_iext_count_may_overflow and
xfs_iext_count_upgrade are always paired.  Merge them into a single
function to simplify the callers and the actual check and upgrade
logic itself.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: "Darrick J. Wong" <djwong@kernel.org>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Chandan Babu R <chandanbabu@kernel.org>
This commit is contained in:
Christoph Hellwig 2024-05-02 09:33:55 +02:00 committed by Chandan Babu R
parent 86de848403
commit 25576c5420
10 changed files with 41 additions and 87 deletions
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5
fs/xfs/libxfs/xfs_attr.c
View File

@ -1050,10 +1050,7 @@ xfs_attr_set(
return error;
if (op != XFS_ATTRUPDATE_REMOVE || xfs_inode_hasattr(dp)) {
error = xfs_iext_count_may_overflow(dp, XFS_ATTR_FORK,
XFS_IEXT_ATTR_MANIP_CNT(rmt_blks));
if (error == -EFBIG)
error = xfs_iext_count_upgrade(args->trans, dp,
error = xfs_iext_count_extend(args->trans, dp, XFS_ATTR_FORK,
XFS_IEXT_ATTR_MANIP_CNT(rmt_blks));
if (error)
goto out_trans_cancel;

5
fs/xfs/libxfs/xfs_bmap.c
View File

@ -4651,10 +4651,7 @@ xfs_bmapi_convert_one_delalloc(
xfs_ilock(ip, XFS_ILOCK_EXCL);
xfs_trans_ijoin(tp, ip, 0);
error = xfs_iext_count_may_overflow(ip, whichfork,
XFS_IEXT_ADD_NOSPLIT_CNT);
if (error == -EFBIG)
error = xfs_iext_count_upgrade(tp, ip,
error = xfs_iext_count_extend(tp, ip, whichfork,
XFS_IEXT_ADD_NOSPLIT_CNT);
if (error)
goto out_trans_cancel;

53
fs/xfs/libxfs/xfs_inode_fork.c
View File

@ -765,53 +765,46 @@ xfs_ifork_verify_local_attr(
return 0;
}
/*
* Check if the inode fork supports adding nr_to_add more extents.
*
* If it doesn't but we can upgrade it to large extent counters, do the upgrade.
* If we can't upgrade or are already using big counters but still can't fit the
* additional extents, return -EFBIG.
*/
int
xfs_iext_count_may_overflow(
xfs_iext_count_extend(
struct xfs_trans *tp,
struct xfs_inode *ip,
int whichfork,
int nr_to_add)
uint nr_to_add)
{
struct xfs_mount *mp = ip->i_mount;
bool has_large =
xfs_inode_has_large_extent_counts(ip);
struct xfs_ifork *ifp = xfs_ifork_ptr(ip, whichfork);
uint64_t max_exts;
uint64_t nr_exts;
ASSERT(nr_to_add <= XFS_MAX_EXTCNT_UPGRADE_NR);
if (whichfork == XFS_COW_FORK)
return 0;
max_exts = xfs_iext_max_nextents(xfs_inode_has_large_extent_counts(ip),
whichfork);
if (XFS_TEST_ERROR(false, ip->i_mount, XFS_ERRTAG_REDUCE_MAX_IEXTENTS))
max_exts = 10;
/* no point in upgrading if if_nextents overflows */
nr_exts = ifp->if_nextents + nr_to_add;
if (nr_exts < ifp->if_nextents || nr_exts > max_exts)
if (nr_exts < ifp->if_nextents)
return -EFBIG;
return 0;
}
/*
* Upgrade this inode's extent counter fields to be able to handle a potential
* increase in the extent count by nr_to_add. Normally this is the same
* quantity that caused xfs_iext_count_may_overflow() to return -EFBIG.
*/
int
xfs_iext_count_upgrade(
struct xfs_trans *tp,
struct xfs_inode *ip,
uint nr_to_add)
{
ASSERT(nr_to_add <= XFS_MAX_EXTCNT_UPGRADE_NR);
if (!xfs_has_large_extent_counts(ip->i_mount) ||
xfs_inode_has_large_extent_counts(ip) ||
XFS_TEST_ERROR(false, ip->i_mount, XFS_ERRTAG_REDUCE_MAX_IEXTENTS))
if (XFS_TEST_ERROR(false, mp, XFS_ERRTAG_REDUCE_MAX_IEXTENTS) &&
nr_exts > 10)
return -EFBIG;
if (nr_exts > xfs_iext_max_nextents(has_large, whichfork)) {
if (has_large || !xfs_has_large_extent_counts(mp))
return -EFBIG;
ip->i_diflags2 |= XFS_DIFLAG2_NREXT64;
xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
}
return 0;
}

6
fs/xfs/libxfs/xfs_inode_fork.h
View File

@ -256,10 +256,8 @@ extern void xfs_ifork_init_cow(struct xfs_inode *ip);
int xfs_ifork_verify_local_data(struct xfs_inode *ip);
int xfs_ifork_verify_local_attr(struct xfs_inode *ip);
int xfs_iext_count_may_overflow(struct xfs_inode *ip, int whichfork,
int nr_to_add);
int xfs_iext_count_upgrade(struct xfs_trans *tp, struct xfs_inode *ip,
uint nr_to_add);
int xfs_iext_count_extend(struct xfs_trans *tp, struct xfs_inode *ip,
int whichfork, uint nr_to_add);
bool xfs_ifork_is_realtime(struct xfs_inode *ip, int whichfork);
/* returns true if the fork has extents but they are not read in yet. */

4
fs/xfs/xfs_bmap_item.c
View File

@ -524,9 +524,7 @@ xfs_bmap_recover_work(
else
iext_delta = XFS_IEXT_PUNCH_HOLE_CNT;
error = xfs_iext_count_may_overflow(ip, work->bi_whichfork, iext_delta);
if (error == -EFBIG)
error = xfs_iext_count_upgrade(tp, ip, iext_delta);
error = xfs_iext_count_extend(tp, ip, work->bi_whichfork, iext_delta);
if (error)
goto err_cancel;

23
fs/xfs/xfs_bmap_util.c
View File

@ -710,10 +710,7 @@ xfs_alloc_file_space(
if (error)
break;
error = xfs_iext_count_may_overflow(ip, XFS_DATA_FORK,
XFS_IEXT_ADD_NOSPLIT_CNT);
if (error == -EFBIG)
error = xfs_iext_count_upgrade(tp, ip,
error = xfs_iext_count_extend(tp, ip, XFS_DATA_FORK,
XFS_IEXT_ADD_NOSPLIT_CNT);
if (error)
goto error;
@ -771,10 +768,8 @@ xfs_unmap_extent(
if (error)
return error;
error = xfs_iext_count_may_overflow(ip, XFS_DATA_FORK,
error = xfs_iext_count_extend(tp, ip, XFS_DATA_FORK,
XFS_IEXT_PUNCH_HOLE_CNT);
if (error == -EFBIG)
error = xfs_iext_count_upgrade(tp, ip, XFS_IEXT_PUNCH_HOLE_CNT);
if (error)
goto out_trans_cancel;
@ -1050,10 +1045,8 @@ xfs_insert_file_space(
xfs_ilock(ip, XFS_ILOCK_EXCL);
xfs_trans_ijoin(tp, ip, 0);
error = xfs_iext_count_may_overflow(ip, XFS_DATA_FORK,
error = xfs_iext_count_extend(tp, ip, XFS_DATA_FORK,
XFS_IEXT_PUNCH_HOLE_CNT);
if (error == -EFBIG)
error = xfs_iext_count_upgrade(tp, ip, XFS_IEXT_PUNCH_HOLE_CNT);
if (error)
goto out_trans_cancel;
@ -1279,23 +1272,17 @@ xfs_swap_extent_rmap(
trace_xfs_swap_extent_rmap_remap_piece(tip, &uirec);
if (xfs_bmap_is_real_extent(&uirec)) {
error = xfs_iext_count_may_overflow(ip,
error = xfs_iext_count_extend(tp, ip,
XFS_DATA_FORK,
XFS_IEXT_SWAP_RMAP_CNT);
if (error == -EFBIG)
error = xfs_iext_count_upgrade(tp, ip,
XFS_IEXT_SWAP_RMAP_CNT);
if (error)
goto out;
}
if (xfs_bmap_is_real_extent(&irec)) {
error = xfs_iext_count_may_overflow(tip,
error = xfs_iext_count_extend(tp, tip,
XFS_DATA_FORK,
XFS_IEXT_SWAP_RMAP_CNT);
if (error == -EFBIG)
error = xfs_iext_count_upgrade(tp, ip,
XFS_IEXT_SWAP_RMAP_CNT);
if (error)
goto out;
}

5
fs/xfs/xfs_dquot.c
View File

@ -341,10 +341,7 @@ xfs_dquot_disk_alloc(
goto err_cancel;
}
error = xfs_iext_count_may_overflow(quotip, XFS_DATA_FORK,
XFS_IEXT_ADD_NOSPLIT_CNT);
if (error == -EFBIG)
error = xfs_iext_count_upgrade(tp, quotip,
error = xfs_iext_count_extend(tp, quotip, XFS_DATA_FORK,
XFS_IEXT_ADD_NOSPLIT_CNT);
if (error)
goto err_cancel;

9
fs/xfs/xfs_iomap.c
View File

@ -299,9 +299,7 @@ xfs_iomap_write_direct(
if (error)
return error;
error = xfs_iext_count_may_overflow(ip, XFS_DATA_FORK, nr_exts);
if (error == -EFBIG)
error = xfs_iext_count_upgrade(tp, ip, nr_exts);
error = xfs_iext_count_extend(tp, ip, XFS_DATA_FORK, nr_exts);
if (error)
goto out_trans_cancel;
@ -617,10 +615,7 @@ xfs_iomap_write_unwritten(
if (error)
return error;
error = xfs_iext_count_may_overflow(ip, XFS_DATA_FORK,
XFS_IEXT_WRITE_UNWRITTEN_CNT);
if (error == -EFBIG)
error = xfs_iext_count_upgrade(tp, ip,
error = xfs_iext_count_extend(tp, ip, XFS_DATA_FORK,
XFS_IEXT_WRITE_UNWRITTEN_CNT);
if (error)
goto error_on_bmapi_transaction;

9
fs/xfs/xfs_reflink.c
View File

@ -754,10 +754,7 @@ xfs_reflink_end_cow_extent(
del = got;
xfs_trim_extent(&del, *offset_fsb, end_fsb - *offset_fsb);
error = xfs_iext_count_may_overflow(ip, XFS_DATA_FORK,
XFS_IEXT_REFLINK_END_COW_CNT);
if (error == -EFBIG)
error = xfs_iext_count_upgrade(tp, ip,
error = xfs_iext_count_extend(tp, ip, XFS_DATA_FORK,
XFS_IEXT_REFLINK_END_COW_CNT);
if (error)
goto out_cancel;
@ -1258,9 +1255,7 @@ xfs_reflink_remap_extent(
if (dmap_written)
++iext_delta;
error = xfs_iext_count_may_overflow(ip, XFS_DATA_FORK, iext_delta);
if (error == -EFBIG)
error = xfs_iext_count_upgrade(tp, ip, iext_delta);
error = xfs_iext_count_extend(tp, ip, XFS_DATA_FORK, iext_delta);
if (error)
goto out_cancel;

5
fs/xfs/xfs_rtalloc.c
View File

@ -695,10 +695,7 @@ xfs_growfs_rt_alloc(
xfs_ilock(ip, XFS_ILOCK_EXCL);
xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
error = xfs_iext_count_may_overflow(ip, XFS_DATA_FORK,
XFS_IEXT_ADD_NOSPLIT_CNT);
if (error == -EFBIG)
error = xfs_iext_count_upgrade(tp, ip,
error = xfs_iext_count_extend(tp, ip, XFS_DATA_FORK,
XFS_IEXT_ADD_NOSPLIT_CNT);
if (error)
goto out_trans_cancel;