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authorTetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>2017-11-29 22:34:50 +0900
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-02-03 17:04:28 +0100
commitcbfe0c04cef3c379e71d6c1f3fe30aacef1a1ba2 (patch)
treec7312fe38396abd419cb4040e6e4eec0b077c53c
parent5e7bd57ace5029df81267976bd83015dd88df1f1 (diff)
quota: Check for register_shrinker() failure.
[ Upstream commit 88bc0ede8d35edc969350852894dc864a2dc1859 ] 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> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-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 353ff31dcee1..1cb1d02c5937 100644
--- a/fs/quota/dquot.c
+++ b/fs/quota/dquot.c
@@ -2919,7 +2919,8 @@ 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;
}