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gfs2 changes

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- Fix the code that cleans up left-over unlinked files.  Various fixes
   and minor improvements in deleting files cached or held open remotely.
 
 - Simplify the use of dlm's DLM_LKF_QUECVT flag.
 
 - A few other minor cleanups.
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Merge tag 'gfs2-for-6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2

Pull gfs2 updates from Andreas Gruenbacher:

 - Fix the code that cleans up left-over unlinked files.

   Various fixes and minor improvements in deleting files cached or held
   open remotely.

 - Simplify the use of dlm's DLM_LKF_QUECVT flag.

 - A few other minor cleanups.

* tag 'gfs2-for-6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2: (21 commits)
  gfs2: Prevent inode creation race
  gfs2: Only defer deletes when we have an iopen glock
  gfs2: Simplify DLM_LKF_QUECVT use
  gfs2: gfs2_evict_inode clarification
  gfs2: Make gfs2_inode_refresh static
  gfs2: Use get_random_u32 in gfs2_orlov_skip
  gfs2: Randomize GLF_VERIFY_DELETE work delay
  gfs2: Use mod_delayed_work in gfs2_queue_try_to_evict
  gfs2: Update to the evict / remote delete documentation
  gfs2: Call gfs2_queue_verify_delete from gfs2_evict_inode
  gfs2: Clean up delete work processing
  gfs2: Minor delete_work_func cleanup
  gfs2: Return enum evict_behavior from gfs2_upgrade_iopen_glock
  gfs2: Rename dinode_demise to evict_behavior
  gfs2: Rename GIF_{DEFERRED -> DEFER}_DELETE
  gfs2: Faster gfs2_upgrade_iopen_glock wakeups
  KMSAN: uninit-value in inode_go_dump (5)
  gfs2: Fix unlinked inode cleanup
  gfs2: Allow immediate GLF_VERIFY_DELETE work
  gfs2: Initialize gl_no_formal_ino earlier
  ...
This commit is contained in:
Linus Torvalds 2024-11-26 12:34:50 -08:00
commit ff2a7a064a
9 changed files with 142 additions and 114 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

107
fs/gfs2/glock.c
View File

@ -35,6 +35,7 @@
#include <linux/rhashtable.h>
#include <linux/pid_namespace.h>
#include <linux/file.h>
#include <linux/random.h>
#include "gfs2.h"
#include "incore.h"
@ -562,11 +563,11 @@ static void state_change(struct gfs2_glock *gl, unsigned int new_state)
gl->gl_tchange = jiffies;
}
static void gfs2_set_demote(struct gfs2_glock *gl)
static void gfs2_set_demote(int nr, struct gfs2_glock *gl)
{
struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
set_bit(GLF_DEMOTE, &gl->gl_flags);
set_bit(nr, &gl->gl_flags);
smp_mb();
wake_up(&sdp->sd_async_glock_wait);
}
@ -958,20 +959,22 @@ static void gfs2_glock_poke(struct gfs2_glock *gl)
gfs2_holder_uninit(&gh);
}
static bool gfs2_try_evict(struct gfs2_glock *gl)
static void gfs2_try_evict(struct gfs2_glock *gl)
{
struct gfs2_inode *ip;
bool evicted = false;
/*
* If there is contention on the iopen glock and we have an inode, try
* to grab and release the inode so that it can be evicted. This will
* allow the remote node to go ahead and delete the inode without us
* having to do it, which will avoid rgrp glock thrashing.
* to grab and release the inode so that it can be evicted. The
* GIF_DEFER_DELETE flag indicates to gfs2_evict_inode() that the inode
* should not be deleted locally. This will allow the remote node to
* go ahead and delete the inode without us having to do it, which will
* avoid rgrp glock thrashing.
*
* The remote node is likely still holding the corresponding inode
* glock, so it will run before we get to verify that the delete has
* happened below.
* happened below. (Verification is triggered by the call to
* gfs2_queue_verify_delete() in gfs2_evict_inode().)
*/
spin_lock(&gl->gl_lockref.lock);
ip = gl->gl_object;
@ -979,8 +982,14 @@ static bool gfs2_try_evict(struct gfs2_glock *gl)
ip = NULL;
spin_unlock(&gl->gl_lockref.lock);
if (ip) {
gl->gl_no_formal_ino = ip->i_no_formal_ino;
set_bit(GIF_DEFERRED_DELETE, &ip->i_flags);
wait_on_inode(&ip->i_inode);
if (is_bad_inode(&ip->i_inode)) {
iput(&ip->i_inode);
ip = NULL;
}
}
if (ip) {
set_bit(GIF_DEFER_DELETE, &ip->i_flags);
d_prune_aliases(&ip->i_inode);
iput(&ip->i_inode);
@ -988,7 +997,7 @@ static bool gfs2_try_evict(struct gfs2_glock *gl)
spin_lock(&gl->gl_lockref.lock);
ip = gl->gl_object;
if (ip) {
clear_bit(GIF_DEFERRED_DELETE, &ip->i_flags);
clear_bit(GIF_DEFER_DELETE, &ip->i_flags);
if (!igrab(&ip->i_inode))
ip = NULL;
}
@ -997,9 +1006,7 @@ static bool gfs2_try_evict(struct gfs2_glock *gl)
gfs2_glock_poke(ip->i_gl);
iput(&ip->i_inode);
}
evicted = !ip;
}
return evicted;
}
bool gfs2_queue_try_to_evict(struct gfs2_glock *gl)
@ -1008,18 +1015,18 @@ bool gfs2_queue_try_to_evict(struct gfs2_glock *gl)
if (test_and_set_bit(GLF_TRY_TO_EVICT, &gl->gl_flags))
return false;
return queue_delayed_work(sdp->sd_delete_wq,
&gl->gl_delete, 0);
return !mod_delayed_work(sdp->sd_delete_wq, &gl->gl_delete, 0);
}
static bool gfs2_queue_verify_evict(struct gfs2_glock *gl)
bool gfs2_queue_verify_delete(struct gfs2_glock *gl, bool later)
{
struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
unsigned long delay;
if (test_and_set_bit(GLF_VERIFY_EVICT, &gl->gl_flags))
if (test_and_set_bit(GLF_VERIFY_DELETE, &gl->gl_flags))
return false;
return queue_delayed_work(sdp->sd_delete_wq,
&gl->gl_delete, 5 * HZ);
delay = later ? HZ + get_random_long() % (HZ * 9) : 0;
return queue_delayed_work(sdp->sd_delete_wq, &gl->gl_delete, delay);
}
static void delete_work_func(struct work_struct *work)
@ -1027,43 +1034,21 @@ static void delete_work_func(struct work_struct *work)
struct delayed_work *dwork = to_delayed_work(work);
struct gfs2_glock *gl = container_of(dwork, struct gfs2_glock, gl_delete);
struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
struct inode *inode;
u64 no_addr = gl->gl_name.ln_number;
bool verify_delete = test_and_clear_bit(GLF_VERIFY_DELETE, &gl->gl_flags);
if (test_and_clear_bit(GLF_TRY_TO_EVICT, &gl->gl_flags)) {
/*
* If we can evict the inode, give the remote node trying to
* delete the inode some time before verifying that the delete
* has happened. Otherwise, if we cause contention on the inode glock
* immediately, the remote node will think that we still have
* the inode in use, and so it will give up waiting.
*
* If we can't evict the inode, signal to the remote node that
* the inode is still in use. We'll later try to delete the
* inode locally in gfs2_evict_inode.
*
* FIXME: We only need to verify that the remote node has
* deleted the inode because nodes before this remote delete
* rework won't cooperate. At a later time, when we no longer
* care about compatibility with such nodes, we can skip this
* step entirely.
*/
if (gfs2_try_evict(gl)) {
if (test_bit(SDF_KILL, &sdp->sd_flags))
goto out;
if (gfs2_queue_verify_evict(gl))
return;
}
goto out;
}
if (test_and_clear_bit(GLF_TRY_TO_EVICT, &gl->gl_flags))
gfs2_try_evict(gl);
if (verify_delete) {
u64 no_addr = gl->gl_name.ln_number;
struct inode *inode;
if (test_and_clear_bit(GLF_VERIFY_EVICT, &gl->gl_flags)) {
inode = gfs2_lookup_by_inum(sdp, no_addr, gl->gl_no_formal_ino,
GFS2_BLKST_UNLINKED);
if (IS_ERR(inode)) {
if (PTR_ERR(inode) == -EAGAIN &&
!test_bit(SDF_KILL, &sdp->sd_flags) &&
gfs2_queue_verify_evict(gl))
gfs2_queue_verify_delete(gl, true))
return;
} else {
d_prune_aliases(inode);
@ -1071,7 +1056,6 @@ static void delete_work_func(struct work_struct *work)
}
}
out:
gfs2_glock_put(gl);
}
@ -1100,7 +1084,7 @@ static void glock_work_func(struct work_struct *work)
if (!delay) {
clear_bit(GLF_PENDING_DEMOTE, &gl->gl_flags);
gfs2_set_demote(gl);
gfs2_set_demote(GLF_DEMOTE, gl);
}
}
run_queue(gl, 0);
@ -1442,10 +1426,7 @@ out:
static void request_demote(struct gfs2_glock *gl, unsigned int state,
unsigned long delay, bool remote)
{
if (delay)
set_bit(GLF_PENDING_DEMOTE, &gl->gl_flags);
else
gfs2_set_demote(gl);
gfs2_set_demote(delay ? GLF_PENDING_DEMOTE : GLF_DEMOTE, gl);
if (gl->gl_demote_state == LM_ST_EXCLUSIVE) {
gl->gl_demote_state = state;
gl->gl_demote_time = jiffies;
@ -1635,12 +1616,6 @@ int gfs2_glock_poll(struct gfs2_holder *gh)
return test_bit(HIF_WAIT, &gh->gh_iflags) ? 0 : 1;
}
static inline bool needs_demote(struct gfs2_glock *gl)
{
return (test_bit(GLF_DEMOTE, &gl->gl_flags) ||
test_bit(GLF_PENDING_DEMOTE, &gl->gl_flags));
}
static void __gfs2_glock_dq(struct gfs2_holder *gh)
{
struct gfs2_glock *gl = gh->gh_gl;
@ -1649,8 +1624,8 @@ static void __gfs2_glock_dq(struct gfs2_holder *gh)
/*
* This holder should not be cached, so mark it for demote.
* Note: this should be done before the check for needs_demote
* below.
* Note: this should be done before the glock_needs_demote
* check below.
*/
if (gh->gh_flags & GL_NOCACHE)
request_demote(gl, LM_ST_UNLOCKED, 0, false);
@ -1663,7 +1638,7 @@ static void __gfs2_glock_dq(struct gfs2_holder *gh)
* If there hasn't been a demote request we are done.
* (Let the remaining holders, if any, keep holding it.)
*/
if (!needs_demote(gl)) {
if (!glock_needs_demote(gl)) {
if (list_empty(&gl->gl_holders))
fast_path = 1;
}
@ -2117,7 +2092,7 @@ static void glock_hash_walk(glock_examiner examiner, const struct gfs2_sbd *sdp)
void gfs2_cancel_delete_work(struct gfs2_glock *gl)
{
clear_bit(GLF_TRY_TO_EVICT, &gl->gl_flags);
clear_bit(GLF_VERIFY_EVICT, &gl->gl_flags);
clear_bit(GLF_VERIFY_DELETE, &gl->gl_flags);
if (cancel_delayed_work(&gl->gl_delete))
gfs2_glock_put(gl);
}
@ -2370,7 +2345,7 @@ static const char *gflags2str(char *buf, const struct gfs2_glock *gl)
*p++ = 'N';
if (test_bit(GLF_TRY_TO_EVICT, gflags))
*p++ = 'e';
if (test_bit(GLF_VERIFY_EVICT, gflags))
if (test_bit(GLF_VERIFY_DELETE, gflags))
*p++ = 'E';
*p = 0;
return buf;

7
fs/gfs2/glock.h
View File

@ -245,6 +245,7 @@ static inline int gfs2_glock_nq_init(struct gfs2_glock *gl,
void gfs2_glock_cb(struct gfs2_glock *gl, unsigned int state);
void gfs2_glock_complete(struct gfs2_glock *gl, int ret);
bool gfs2_queue_try_to_evict(struct gfs2_glock *gl);
bool gfs2_queue_verify_delete(struct gfs2_glock *gl, bool later);
void gfs2_cancel_delete_work(struct gfs2_glock *gl);
void gfs2_flush_delete_work(struct gfs2_sbd *sdp);
void gfs2_gl_hash_clear(struct gfs2_sbd *sdp);
@ -284,4 +285,10 @@ static inline bool gfs2_holder_queued(struct gfs2_holder *gh)
void gfs2_inode_remember_delete(struct gfs2_glock *gl, u64 generation);
bool gfs2_inode_already_deleted(struct gfs2_glock *gl, u64 generation);
static inline bool glock_needs_demote(struct gfs2_glock *gl)
{
return (test_bit(GLF_DEMOTE, &gl->gl_flags) ||
test_bit(GLF_PENDING_DEMOTE, &gl->gl_flags));
}
#endif /* __GLOCK_DOT_H__ */

11
fs/gfs2/glops.c
View File

@ -470,7 +470,7 @@ static int gfs2_dinode_in(struct gfs2_inode *ip, const void *buf)
* Returns: errno
*/
int gfs2_inode_refresh(struct gfs2_inode *ip)
static int gfs2_inode_refresh(struct gfs2_inode *ip)
{
struct buffer_head *dibh;
int error;
@ -494,11 +494,18 @@ int gfs2_inode_refresh(struct gfs2_inode *ip)
static int inode_go_instantiate(struct gfs2_glock *gl)
{
struct gfs2_inode *ip = gl->gl_object;
struct gfs2_glock *io_gl;
int error;
if (!ip) /* no inode to populate - read it in later */
return 0;
return gfs2_inode_refresh(ip);
error = gfs2_inode_refresh(ip);
if (error)
return error;
io_gl = ip->i_iopen_gh.gh_gl;
io_gl->gl_no_formal_ino = ip->i_no_formal_ino;
return 0;
}
static int inode_go_held(struct gfs2_holder *gh)

4
fs/gfs2/incore.h
View File

@ -329,7 +329,7 @@ enum {
GLF_BLOCKING = 15,
GLF_UNLOCKED = 16, /* Wait for glock to be unlocked */
GLF_TRY_TO_EVICT = 17, /* iopen glocks only */
GLF_VERIFY_EVICT = 18, /* iopen glocks only */
GLF_VERIFY_DELETE = 18, /* iopen glocks only */
};
struct gfs2_glock {
@ -376,7 +376,7 @@ enum {
GIF_SW_PAGED = 3,
GIF_FREE_VFS_INODE = 5,
GIF_GLOP_PENDING = 6,
GIF_DEFERRED_DELETE = 7,
GIF_DEFER_DELETE = 7,
};
struct gfs2_inode {

1
fs/gfs2/inode.c
View File

@ -750,6 +750,7 @@ static int gfs2_create_inode(struct inode *dir, struct dentry *dentry,
if (error)
goto fail_free_inode;
gfs2_cancel_delete_work(io_gl);
io_gl->gl_no_formal_ino = ip->i_no_formal_ino;
retry:
error = insert_inode_locked4(inode, ip->i_no_addr, iget_test, &ip->i_no_addr);

2
fs/gfs2/inode.h
View File

@ -93,8 +93,6 @@ struct inode *gfs2_lookup_by_inum(struct gfs2_sbd *sdp, u64 no_addr,
u64 no_formal_ino,
unsigned int blktype);
int gfs2_inode_refresh(struct gfs2_inode *ip);
struct inode *gfs2_lookupi(struct inode *dir, const struct qstr *name,
int is_root);
int gfs2_permission(struct mnt_idmap *idmap,

29
fs/gfs2/lock_dlm.c
View File

@ -224,8 +224,21 @@ static int make_mode(struct gfs2_sbd *sdp, const unsigned int lmstate)
return -1;
}
/* Taken from fs/dlm/lock.c. */
static bool middle_conversion(int cur, int req)
{
return (cur == DLM_LOCK_PR && req == DLM_LOCK_CW) ||
(cur == DLM_LOCK_CW && req == DLM_LOCK_PR);
}
static bool down_conversion(int cur, int req)
{
return !middle_conversion(cur, req) && req < cur;
}
static u32 make_flags(struct gfs2_glock *gl, const unsigned int gfs_flags,
const int req)
const int cur, const int req)
{
u32 lkf = 0;
@ -251,7 +264,14 @@ static u32 make_flags(struct gfs2_glock *gl, const unsigned int gfs_flags,
if (!test_bit(GLF_INITIAL, &gl->gl_flags)) {
lkf |= DLM_LKF_CONVERT;
if (test_bit(GLF_BLOCKING, &gl->gl_flags))
/*
* The DLM_LKF_QUECVT flag needs to be set for "first come,
* first served" semantics, but it must only be set for
* "upward" lock conversions or else DLM will reject the
* request as invalid.
*/
if (!down_conversion(cur, req))
lkf |= DLM_LKF_QUECVT;
}
@ -271,13 +291,14 @@ static int gdlm_lock(struct gfs2_glock *gl, unsigned int req_state,
unsigned int flags)
{
struct lm_lockstruct *ls = &gl->gl_name.ln_sbd->sd_lockstruct;
int req;
int cur, req;
u32 lkf;
char strname[GDLM_STRNAME_BYTES] = "";
int error;
cur = make_mode(gl->gl_name.ln_sbd, gl->gl_state);
req = make_mode(gl->gl_name.ln_sbd, req_state);
lkf = make_flags(gl, flags, req);
lkf = make_flags(gl, flags, cur, req);
gfs2_glstats_inc(gl, GFS2_LKS_DCOUNT);
gfs2_sbstats_inc(gl, GFS2_LKS_DCOUNT);
if (test_bit(GLF_INITIAL, &gl->gl_flags)) {

6
fs/gfs2/rgrp.c
View File

@ -1879,7 +1879,7 @@ static void try_rgrp_unlink(struct gfs2_rgrpd *rgd, u64 *last_unlinked, u64 skip
*/
ip = gl->gl_object;
if (ip || !gfs2_queue_try_to_evict(gl))
if (ip || !gfs2_queue_verify_delete(gl, false))
gfs2_glock_put(gl);
else
found++;
@ -1987,10 +1987,8 @@ static bool gfs2_rgrp_used_recently(const struct gfs2_blkreserv *rs,
static u32 gfs2_orlov_skip(const struct gfs2_inode *ip)
{
const struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
u32 skip;
get_random_bytes(&skip, sizeof(skip));
return skip % sdp->sd_rgrps;
return get_random_u32() % sdp->sd_rgrps;
}
static bool gfs2_select_rgrp(struct gfs2_rgrpd **pos, const struct gfs2_rgrpd *begin)

89
fs/gfs2/super.c
View File

@ -44,10 +44,10 @@
#include "xattr.h"
#include "lops.h"
enum dinode_demise {
SHOULD_DELETE_DINODE,
SHOULD_NOT_DELETE_DINODE,
SHOULD_DEFER_EVICTION,
enum evict_behavior {
EVICT_SHOULD_DELETE,
EVICT_SHOULD_SKIP_DELETE,
EVICT_SHOULD_DEFER_DELETE,
};
/**
@ -1030,7 +1030,7 @@ static int gfs2_drop_inode(struct inode *inode)
if (inode->i_nlink &&
gfs2_holder_initialized(&ip->i_iopen_gh)) {
struct gfs2_glock *gl = ip->i_iopen_gh.gh_gl;
if (test_bit(GLF_DEMOTE, &gl->gl_flags))
if (glock_needs_demote(gl))
clear_nlink(inode);
}
@ -1045,7 +1045,7 @@ static int gfs2_drop_inode(struct inode *inode)
struct gfs2_glock *gl = ip->i_iopen_gh.gh_gl;
gfs2_glock_hold(gl);
if (!gfs2_queue_try_to_evict(gl))
if (!gfs2_queue_verify_delete(gl, true))
gfs2_glock_put_async(gl);
return 0;
}
@ -1257,7 +1257,7 @@ static void gfs2_glock_put_eventually(struct gfs2_glock *gl)
gfs2_glock_put(gl);
}
static bool gfs2_upgrade_iopen_glock(struct inode *inode)
static enum evict_behavior gfs2_upgrade_iopen_glock(struct inode *inode)
{
struct gfs2_inode *ip = GFS2_I(inode);
struct gfs2_sbd *sdp = GFS2_SB(inode);
@ -1272,9 +1272,9 @@ static bool gfs2_upgrade_iopen_glock(struct inode *inode)
* exclusive access to the iopen glock here.
*
* Otherwise, the other nodes holding the lock will be notified about
* our locking request. If they do not have the inode open, they are
* expected to evict the cached inode and release the lock, allowing us
* to proceed.
* our locking request (see iopen_go_callback()). If they do not have
* the inode open, they are expected to evict the cached inode and
* release the lock, allowing us to proceed.
*
* Otherwise, if they cannot evict the inode, they are expected to poke
* the inode glock (note: not the iopen glock). We will notice that
@ -1290,17 +1290,22 @@ static bool gfs2_upgrade_iopen_glock(struct inode *inode)
gfs2_holder_reinit(LM_ST_EXCLUSIVE, GL_ASYNC | GL_NOCACHE, gh);
error = gfs2_glock_nq(gh);
if (error)
return false;
return EVICT_SHOULD_SKIP_DELETE;
wait_event_interruptible_timeout(sdp->sd_async_glock_wait,
!test_bit(HIF_WAIT, &gh->gh_iflags) ||
test_bit(GLF_DEMOTE, &ip->i_gl->gl_flags),
glock_needs_demote(ip->i_gl),
5 * HZ);
if (!test_bit(HIF_HOLDER, &gh->gh_iflags)) {
gfs2_glock_dq(gh);
return false;
if (glock_needs_demote(ip->i_gl))
return EVICT_SHOULD_SKIP_DELETE;
return EVICT_SHOULD_DEFER_DELETE;
}
return gfs2_glock_holder_ready(gh) == 0;
error = gfs2_glock_holder_ready(gh);
if (error)
return EVICT_SHOULD_SKIP_DELETE;
return EVICT_SHOULD_DELETE;
}
/**
@ -1313,8 +1318,8 @@ static bool gfs2_upgrade_iopen_glock(struct inode *inode)
*
* Returns: the fate of the dinode
*/
static enum dinode_demise evict_should_delete(struct inode *inode,
struct gfs2_holder *gh)
static enum evict_behavior evict_should_delete(struct inode *inode,
struct gfs2_holder *gh)
{
struct gfs2_inode *ip = GFS2_I(inode);
struct super_block *sb = inode->i_sb;
@ -1324,12 +1329,12 @@ static enum dinode_demise evict_should_delete(struct inode *inode,
if (unlikely(test_bit(GIF_ALLOC_FAILED, &ip->i_flags)))
goto should_delete;
if (test_bit(GIF_DEFERRED_DELETE, &ip->i_flags))
return SHOULD_DEFER_EVICTION;
if (test_bit(GIF_DEFER_DELETE, &ip->i_flags))
return EVICT_SHOULD_DEFER_DELETE;
/* Deletes should never happen under memory pressure anymore. */
if (WARN_ON_ONCE(current->flags & PF_MEMALLOC))
return SHOULD_DEFER_EVICTION;
return EVICT_SHOULD_DEFER_DELETE;
/* Must not read inode block until block type has been verified */
ret = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, GL_SKIP, gh);
@ -1337,34 +1342,37 @@ static enum dinode_demise evict_should_delete(struct inode *inode,
glock_clear_object(ip->i_iopen_gh.gh_gl, ip);
ip->i_iopen_gh.gh_flags |= GL_NOCACHE;
gfs2_glock_dq_uninit(&ip->i_iopen_gh);
return SHOULD_DEFER_EVICTION;
return EVICT_SHOULD_DEFER_DELETE;
}
if (gfs2_inode_already_deleted(ip->i_gl, ip->i_no_formal_ino))
return SHOULD_NOT_DELETE_DINODE;
return EVICT_SHOULD_SKIP_DELETE;
ret = gfs2_check_blk_type(sdp, ip->i_no_addr, GFS2_BLKST_UNLINKED);
if (ret)
return SHOULD_NOT_DELETE_DINODE;
return EVICT_SHOULD_SKIP_DELETE;
ret = gfs2_instantiate(gh);
if (ret)
return SHOULD_NOT_DELETE_DINODE;
return EVICT_SHOULD_SKIP_DELETE;
/*
* The inode may have been recreated in the meantime.
*/
if (inode->i_nlink)
return SHOULD_NOT_DELETE_DINODE;
return EVICT_SHOULD_SKIP_DELETE;
should_delete:
if (gfs2_holder_initialized(&ip->i_iopen_gh) &&
test_bit(HIF_HOLDER, &ip->i_iopen_gh.gh_iflags)) {
if (!gfs2_upgrade_iopen_glock(inode)) {
enum evict_behavior behavior =
gfs2_upgrade_iopen_glock(inode);
if (behavior != EVICT_SHOULD_DELETE) {
gfs2_holder_uninit(&ip->i_iopen_gh);
return SHOULD_NOT_DELETE_DINODE;
return behavior;
}
}
return SHOULD_DELETE_DINODE;
return EVICT_SHOULD_DELETE;
}
/**
@ -1475,8 +1483,10 @@ static void gfs2_evict_inode(struct inode *inode)
struct gfs2_sbd *sdp = sb->s_fs_info;
struct gfs2_inode *ip = GFS2_I(inode);
struct gfs2_holder gh;
enum evict_behavior behavior;
int ret;
gfs2_holder_mark_uninitialized(&gh);
if (inode->i_nlink || sb_rdonly(sb) || !ip->i_no_addr)
goto out;
@ -1488,11 +1498,20 @@ static void gfs2_evict_inode(struct inode *inode)
if (!sdp->sd_jdesc)
goto out;
gfs2_holder_mark_uninitialized(&gh);
ret = evict_should_delete(inode, &gh);
if (ret == SHOULD_DEFER_EVICTION)
goto out;
if (ret == SHOULD_DELETE_DINODE)
behavior = evict_should_delete(inode, &gh);
if (behavior == EVICT_SHOULD_DEFER_DELETE &&
!test_bit(SDF_KILL, &sdp->sd_flags)) {
struct gfs2_glock *io_gl = ip->i_iopen_gh.gh_gl;
if (io_gl) {
gfs2_glock_hold(io_gl);
if (!gfs2_queue_verify_delete(io_gl, true))
gfs2_glock_put(io_gl);
goto out;
}
behavior = EVICT_SHOULD_DELETE;
}
if (behavior == EVICT_SHOULD_DELETE)
ret = evict_unlinked_inode(inode);
else
ret = evict_linked_inode(inode);
@ -1500,11 +1519,11 @@ static void gfs2_evict_inode(struct inode *inode)
if (gfs2_rs_active(&ip->i_res))
gfs2_rs_deltree(&ip->i_res);
if (gfs2_holder_initialized(&gh))
gfs2_glock_dq_uninit(&gh);
if (ret && ret != GLR_TRYFAILED && ret != -EROFS)
fs_warn(sdp, "gfs2_evict_inode: %d\n", ret);
out:
if (gfs2_holder_initialized(&gh))
gfs2_glock_dq_uninit(&gh);
truncate_inode_pages_final(&inode->i_data);
if (ip->i_qadata)
gfs2_assert_warn(sdp, ip->i_qadata->qa_ref == 0);
@ -1537,11 +1556,13 @@ static struct inode *gfs2_alloc_inode(struct super_block *sb)
if (!ip)
return NULL;
ip->i_no_addr = 0;
ip->i_no_formal_ino = 0;
ip->i_flags = 0;
ip->i_gl = NULL;
gfs2_holder_mark_uninitialized(&ip->i_iopen_gh);
memset(&ip->i_res, 0, sizeof(ip->i_res));
RB_CLEAR_NODE(&ip->i_res.rs_node);
ip->i_diskflags = 0;
ip->i_rahead = 0;
return &ip->i_inode;
}