[4.2.y-ckt stable] Patch "bcache: Add a cond_resched() call to gc" has been added to the 4.2.y-ckt tree

[Kamal Mostafa]

This is a note to let you know that I have just added a patch titled

    bcache: Add a cond_resched() call to gc

to the linux-4.2.y-queue branch of the 4.2.y-ckt extended stable tree 
which can be found at:

    http://kernel.ubuntu.com/git/ubuntu/linux.git/log/?h=linux-4.2.y-queue

This patch is scheduled to be released in version 4.2.8-ckt3.

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 4.2.y-ckt tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Kamal

---8<------------------------------------------------------------

>From b1ac98ab0a7b48318bba79b48e488c76c8120be1 Mon Sep 17 00:00:00 2001
From: Kent Overstreet <kmo at daterainc.com>
Date: Sun, 29 Nov 2015 17:18:33 -0800
Subject: bcache: Add a cond_resched() call to gc

commit c5f1e5adf956e3ba82d204c7c141a75da9fa449a upstream.

Signed-off-by: Takashi Iwai <tiwai at suse.de>
Tested-by: Eric Wheeler <bcache at linux.ewheeler.net>
Cc: Kent Overstreet <kmo at daterainc.com>
Signed-off-by: Jens Axboe <axboe at fb.com>
Signed-off-by: Kamal Mostafa <kamal at canonical.com>
---
 drivers/md/bcache/btree.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/md/bcache/btree.c b/drivers/md/bcache/btree.c
index 9aaa8f8..43829d9 100644
--- a/drivers/md/bcache/btree.c
+++ b/drivers/md/bcache/btree.c
@@ -1741,6 +1741,7 @@ static void bch_btree_gc(struct cache_set *c)
 	do {
 		ret = btree_root(gc_root, c, &op, &writes, &stats);
 		closure_sync(&writes);
+		cond_resched();

 		if (ret && ret != -EAGAIN)
 			pr_warn("gc failed!");
--
1.9.1