Patch "quota: Check for register_shrinker() failure." has been added to the 4.9-stable tree

This is a note to let you know that I've just added the patch titled

quota: Check for register_shrinker() failure.

to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
quota-check-for-register_shrinker-failure.patch
and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Tetsuo Handa <[email protected]>
Date: Wed, 29 Nov 2017 22:34:50 +0900
Subject: quota: Check for register_shrinker() failure.

From: Tetsuo Handa <[email protected]>

[ 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.

---
 fs/quota/dquot.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

@@ -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;
 }

Patches currently in stable-queue which might be from [email protected] are

queue-4.9/quota-check-for-register_shrinker-failure.patch queue-4.9/xfs-fortify-xfs_alloc_buftarg-error-handling.patch