From b7ce521d6d1e6c2756f68f90db70f90c5e261348 Mon Sep 17 00:00:00 2001
From: Kent Overstreet <kmo@daterainc.com>
Date: Sun, 29 Nov 2015 17:18:33 -0800
Subject: [PATCH] bcache: Add a cond_resched() call to gc

commit c5f1e5adf956e3ba82d204c7c141a75da9fa449a upstream.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Tested-by: Eric Wheeler <bcache@linux.ewheeler.net>
Cc: Kent Overstreet <kmo@daterainc.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 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 d5f7e682a0ec7..74a5786ddccea 100644
--- a/drivers/md/bcache/btree.c
+++ b/drivers/md/bcache/btree.c
@@ -1641,6 +1641,7 @@ 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!");
-- 
2.47.2