Messages in this thread Patch in this message | | | From | Sasha Levin <> | Subject | [PATCH AUTOSEL for 4.4 26/35] quota: Check for register_shrinker() failure. | Date | Wed, 24 Jan 2018 04:17:06 +0000 |
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From: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
[ 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> --- fs/quota/dquot.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
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; } -- 2.11.0
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