[PATCH 3.13.y-ckt 036/136] bcache: Add a cond_resched() call to gc

From: Kamal Mostafa
Date: Tue Feb 02 2016 - 13:59:26 EST


3.13.11-ckt34 -stable review patch. If anyone has any objections, please let me know.

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

From: Kent Overstreet <kmo@xxxxxxxxxxxxx>

commit c5f1e5adf956e3ba82d204c7c141a75da9fa449a upstream.

Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
Tested-by: Eric Wheeler <bcache@xxxxxxxxxxxxxxxxxx>
Cc: Kent Overstreet <kmo@xxxxxxxxxxxxx>
Signed-off-by: Jens Axboe <axboe@xxxxxx>
Signed-off-by: Kamal Mostafa <kamal@xxxxxxxxxxxxx>
---
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 7b76e7b..b43d8f8 100644
--- a/drivers/md/bcache/btree.c
+++ b/drivers/md/bcache/btree.c
@@ -1632,6 +1632,7 @@ 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