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gfs2: Rename LM_FLAG_{NOEXP -> RECOVER}

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GFS sets the LM_FLAG_NOEXP flag on locking requests it makes during
journal recovery, so rename the flag to LM_FLAG_RECOVER for improved
code readability.

Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
This commit is contained in:
Andreas Gruenbacher
2025-07-16 15:18:09 +02:00
parent fab27b4930
commit 1714e8543d
6 changed files with 23 additions and 20 deletions
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12
fs/gfs2/glock.c
View File

@@ -692,7 +692,7 @@ __acquires(&gl->gl_lockref.lock)
int ret;
if (target != LM_ST_UNLOCKED && glock_blocked_by_withdraw(gl) &&
gh && !(gh->gh_flags & LM_FLAG_NOEXP))
gh && !(gh->gh_flags & LM_FLAG_RECOVER))
goto skip_inval;
GLOCK_BUG_ON(gl, gl->gl_state == target);
@@ -1550,7 +1550,7 @@ int gfs2_glock_nq(struct gfs2_holder *gh)
struct gfs2_glock *gl = gh->gh_gl;
int error;
if (glock_blocked_by_withdraw(gl) && !(gh->gh_flags & LM_FLAG_NOEXP))
if (glock_blocked_by_withdraw(gl) && !(gh->gh_flags & LM_FLAG_RECOVER))
return -EIO;
if (gh->gh_flags & GL_NOBLOCK) {
@@ -1575,7 +1575,7 @@ unlock:
gh->gh_error = 0;
spin_lock(&gl->gl_lockref.lock);
add_to_queue(gh);
if (unlikely((LM_FLAG_NOEXP & gh->gh_flags) &&
if (unlikely((LM_FLAG_RECOVER & gh->gh_flags) &&
test_and_clear_bit(GLF_HAVE_FROZEN_REPLY, &gl->gl_flags))) {
set_bit(GLF_HAVE_REPLY, &gl->gl_flags);
gl->gl_lockref.count++;
@@ -1880,7 +1880,7 @@ void gfs2_glock_cb(struct gfs2_glock *gl, unsigned int state)
*
* Glocks are not frozen if (a) the result of the dlm operation is
* an error, (b) the locking operation was an unlock operation or
* (c) if there is a "noexp" flagged request anywhere in the queue
* (c) if there is a "recover" flagged request anywhere in the queue
*
* Returns: 1 if freezing should occur, 0 otherwise
*/
@@ -1897,7 +1897,7 @@ static int gfs2_should_freeze(const struct gfs2_glock *gl)
list_for_each_entry(gh, &gl->gl_holders, gh_list) {
if (test_bit(HIF_HOLDER, &gh->gh_iflags))
continue;
if (LM_FLAG_NOEXP & gh->gh_flags)
if (LM_FLAG_RECOVER & gh->gh_flags)
return 0;
}
@@ -2246,7 +2246,7 @@ static const char *hflags2str(char *buf, u16 flags, unsigned long iflags)
*p++ = 't';
if (flags & LM_FLAG_TRY_1CB)
*p++ = 'T';
if (flags & LM_FLAG_NOEXP)
if (flags & LM_FLAG_RECOVER)
*p++ = 'e';
if (flags & LM_FLAG_ANY)
*p++ = 'A';

8
fs/gfs2/glock.h
View File

@@ -58,10 +58,10 @@ enum {
* LM_FLAG_TRY_1CB
* Send one blocking callback if TRY is set and the lock is not granted.
*
* LM_FLAG_NOEXP
* LM_FLAG_RECOVER
* GFS sets this flag on lock requests it makes while doing journal recovery.
* These special requests should not be blocked due to the recovery like
* ordinary locks would be.
* While ordinary requests are blocked until the end of recovery, requests
* with this flag set do proceed.
*
* LM_FLAG_ANY
* A SHARED request may also be granted in DEFERRED, or a DEFERRED request may
@@ -80,7 +80,7 @@ enum {
#define LM_FLAG_TRY 0x0001
#define LM_FLAG_TRY_1CB 0x0002
#define LM_FLAG_NOEXP 0x0004
#define LM_FLAG_RECOVER 0x0004
#define LM_FLAG_ANY 0x0008
#define LM_FLAG_NODE_SCOPE 0x0020
#define GL_ASYNC 0x0040

9
fs/gfs2/ops_fstype.c
View File

@@ -370,7 +370,7 @@ static int init_locking(struct gfs2_sbd *sdp, struct gfs2_holder *mount_gh,
error = gfs2_glock_nq_num(sdp,
GFS2_MOUNT_LOCK, &gfs2_nondisk_glops,
LM_ST_EXCLUSIVE,
LM_FLAG_NOEXP | GL_NOCACHE | GL_NOPID,
LM_FLAG_RECOVER | GL_NOCACHE | GL_NOPID,
mount_gh);
if (error) {
fs_err(sdp, "can't acquire mount glock: %d\n", error);
@@ -380,7 +380,7 @@ static int init_locking(struct gfs2_sbd *sdp, struct gfs2_holder *mount_gh,
error = gfs2_glock_nq_num(sdp,
GFS2_LIVE_LOCK, &gfs2_nondisk_glops,
LM_ST_SHARED,
LM_FLAG_NOEXP | GL_EXACT | GL_NOPID,
LM_FLAG_RECOVER | GL_EXACT | GL_NOPID,
&sdp->sd_live_gh);
if (error) {
fs_err(sdp, "can't acquire live glock: %d\n", error);
@@ -745,7 +745,8 @@ static int init_journal(struct gfs2_sbd *sdp, int undo)
error = gfs2_glock_nq_num(sdp, sdp->sd_lockstruct.ls_jid,
&gfs2_journal_glops,
LM_ST_EXCLUSIVE,
LM_FLAG_NOEXP | GL_NOCACHE | GL_NOPID,
LM_FLAG_RECOVER |
GL_NOCACHE | GL_NOPID,
&sdp->sd_journal_gh);
if (error) {
fs_err(sdp, "can't acquire journal glock: %d\n", error);
@@ -755,7 +756,7 @@ static int init_journal(struct gfs2_sbd *sdp, int undo)
ip = GFS2_I(sdp->sd_jdesc->jd_inode);
sdp->sd_jinode_gl = ip->i_gl;
error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED,
LM_FLAG_NOEXP | GL_EXACT |
LM_FLAG_RECOVER | GL_EXACT |
GL_NOCACHE | GL_NOPID,
&sdp->sd_jinode_gh);
if (error) {

6
fs/gfs2/recovery.c
View File

@@ -424,7 +424,8 @@ void gfs2_recover_func(struct work_struct *work)
error = gfs2_glock_nq_num(sdp, jd->jd_jid, &gfs2_journal_glops,
LM_ST_EXCLUSIVE,
LM_FLAG_NOEXP | LM_FLAG_TRY | GL_NOCACHE,
LM_FLAG_RECOVER | LM_FLAG_TRY |
GL_NOCACHE,
&j_gh);
switch (error) {
case 0:
@@ -440,7 +441,8 @@ void gfs2_recover_func(struct work_struct *work)
}
error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED,
LM_FLAG_NOEXP | GL_NOCACHE, &ji_gh);
LM_FLAG_RECOVER | GL_NOCACHE,
&ji_gh);
if (error)
goto fail_gunlock_j;
} else {

2
fs/gfs2/super.c
View File

@@ -351,7 +351,7 @@ static int gfs2_lock_fs_check_clean(struct gfs2_sbd *sdp)
gfs2_freeze_unlock(sdp);
error = gfs2_glock_nq_init(sdp->sd_freeze_gl, LM_ST_EXCLUSIVE,
LM_FLAG_NOEXP | GL_NOPID,
LM_FLAG_RECOVER | GL_NOPID,
&sdp->sd_freeze_gh);
if (error)
goto relock_shared;

6
fs/gfs2/util.c
View File

@@ -58,7 +58,7 @@ int check_journal_clean(struct gfs2_sbd *sdp, struct gfs2_jdesc *jd,
struct gfs2_inode *ip;
ip = GFS2_I(jd->jd_inode);
error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_NOEXP |
error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_RECOVER |
GL_EXACT | GL_NOCACHE, &j_gh);
if (error) {
if (verbose)
@@ -99,7 +99,7 @@ out_unlock:
*/
int gfs2_freeze_lock_shared(struct gfs2_sbd *sdp)
{
int flags = LM_FLAG_NOEXP | GL_EXACT;
int flags = LM_FLAG_RECOVER | GL_EXACT;
int error;
error = gfs2_glock_nq_init(sdp->sd_freeze_gl, LM_ST_SHARED, flags,
@@ -224,7 +224,7 @@ static void signal_our_withdraw(struct gfs2_sbd *sdp)
fs_warn(sdp, "Requesting recovery of jid %d.\n",
sdp->sd_lockstruct.ls_jid);
gfs2_holder_reinit(LM_ST_EXCLUSIVE,
LM_FLAG_TRY_1CB | LM_FLAG_NOEXP | GL_NOPID,
LM_FLAG_TRY_1CB | LM_FLAG_RECOVER | GL_NOPID,
&sdp->sd_live_gh);
msleep(GL_GLOCK_MAX_HOLD);
/*