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| author | Benjamin Marzinski <bmarzins@redhat.com> | 2009-06-30 13:51:11 -0500 |
|---|---|---|
| committer | Steven Whitehouse <swhiteho@redhat.com> | 2009-07-30 10:59:28 +0100 |
| commit | a51b56fff3f04fc5aa66b21a2a6d693ee9862d66 (patch) | |
| tree | e93c25ebe818e7a157f2b878a9512ada0f2f2bd1 /fs/gfs2/rgrp.c | |
| parent | 1946f70ab5e4eb8b54a8eaaedba2293a3750ab7e (diff) | |
| download | linux-a51b56fff3f04fc5aa66b21a2a6d693ee9862d66.tar.gz linux-a51b56fff3f04fc5aa66b21a2a6d693ee9862d66.tar.bz2 linux-a51b56fff3f04fc5aa66b21a2a6d693ee9862d66.zip | |
GFS2: Fix panic in glock memory shrinker
It is possible for gfs2_shrink_glock_memory() to check a glock for
demotion
that's in the process of being freed by gfs2_glock_put(). In this case,
gfs2_shrink_glock_memory() will acquire a new reference to this glock,
and
then try to free the glock itself when it drops the refernce. To solve
this, gfs2_shrink_glock_memory() just needs to check if the glock is in
the process of being freed, and if so skip it without ever unlocking the
lru_lock.
Signed-off-by: Benjamin Marzinski <bmarzins@redhat.com>
Acked-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Diffstat (limited to 'fs/gfs2/rgrp.c')
0 files changed, 0 insertions, 0 deletions