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gfs2: Report when glocks cannot be freed for a long time

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When glocks cannot be freed for a long time, avoid the "task blocked for
more than N seconds" messages and report how many glocks are still
outstanding, instead.

Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
This commit is contained in:
Andreas Gruenbacher
2024-04-09 09:24:27 +02:00
parent 8f6b8f142b
commit 51568ac2e9
1 changed files with 15 additions and 3 deletions
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fs/gfs2/glock.c
+15 -3
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@@ -2248,13 +2248,25 @@ void gfs2_gl_dq_holders(struct gfs2_sbd *sdp)
void gfs2_gl_hash_clear(struct gfs2_sbd *sdp)
{
unsigned long start = jiffies;
bool timed_out = false;
set_bit(SDF_SKIP_DLM_UNLOCK, &sdp->sd_flags);
flush_workqueue(glock_workqueue);
glock_hash_walk(clear_glock, sdp);
flush_workqueue(glock_workqueue);
wait_event_timeout(sdp->sd_kill_wait,
atomic_read(&sdp->sd_glock_disposal) == 0,
HZ * 600);
while (!timed_out) {
wait_event_timeout(sdp->sd_kill_wait,
!atomic_read(&sdp->sd_glock_disposal),
HZ * 60);
if (!atomic_read(&sdp->sd_glock_disposal))
break;
timed_out = time_after(jiffies, start + (HZ * 600));
fs_warn(sdp, "%u glocks left after %u seconds%s\n",
atomic_read(&sdp->sd_glock_disposal),
jiffies_to_msecs(jiffies - start) / 1000,
timed_out ? ":" : "; still waiting");
}
gfs2_lm_unmount(sdp);
gfs2_free_dead_glocks(sdp);
glock_hash_walk(dump_glock_func, sdp);