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 1bfac28b7e7d..f9246ac4eef8 100644 --- a/fs/quota/dquot.c +++ b/fs/quota/dquot.c @@ -2985,7 +2985,8 @@ 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; }