gfs2: Fix "Make glock lru list scanning safer"

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Commit 228804a35c tried to add a refcount check to
gfs2_scan_glock_lru() to make sure that glocks that are still referenced
cannot be freed.  It failed to account for the bias state_change() adds
to the refcount for held glocks, so held glocks are no longer removed
from the glock cache, which can lead to out-of-memory problems.  Fix
that.  (The inodes those glocks are associated with do get shrunk and do
get pushed out of memory.)

In addition, use the same eligibility check in gfs2_scan_glock_lru() and
gfs2_dispose_glock_lru().

Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>

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Andreas Gruenbacher 2024-03-28 19:59:45 +01:00

parent c9a0a4b028

commit acf1f42faf

1 changed files with 13 additions and 11 deletions

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fs/gfs2/glock.c

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