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authorTetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>2017-11-29 22:34:50 +0900
committerJan Kara <jack@suse.cz>2017-11-29 16:46:48 +0100
commit88bc0ede8d35edc969350852894dc864a2dc1859 (patch)
tree45643bb6db52eded250bee72523814901f425362 /fs/quota
parent1a6152d36dee08da2be2a3030dceb45ef680460a (diff)
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quota: Check for register_shrinker() failure.
register_shrinker() might return -ENOMEM error since Linux 3.12. Call panic() as with other failure checks in this function if register_shrinker() failed. Fixes: 1d3d4437eae1 ("vmscan: per-node deferred work") Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Cc: Jan Kara <jack@suse.com> Cc: Michal Hocko <mhocko@suse.com> Reviewed-by: Michal Hocko <mhocko@suse.com> Signed-off-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs/quota')
-rw-r--r--fs/quota/dquot.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c
index d38684ff2ebb..020c597ef9b6 100644
--- a/fs/quota/dquot.c
+++ b/fs/quota/dquot.c
@@ -2992,7 +2992,8 @@ static int __init dquot_init(void)
pr_info("VFS: Dquot-cache hash table entries: %ld (order %ld,"
" %ld bytes)\n", nr_hash, order, (PAGE_SIZE << order));
- register_shrinker(&dqcache_shrinker);
+ if (register_shrinker(&dqcache_shrinker))
+ panic("Cannot register dquot shrinker");
return 0;
}