[ 08/57] bcache: Fix a dumb CPU spinning bug in writeback

[Greg Kroah-Hartman]

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

------------------

From: Kent Overstreet <kmo@xxxxxxxxxxxxx>

commit 79e3dab90d9f826ceca67c7890e048ac9169de49 upstream.

schedule_timeout() != schedule_timeout_uninterruptible()

Signed-off-by: Kent Overstreet <kmo@xxxxxxxxxxxxx>
Signed-off-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 drivers/md/bcache/writeback.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

--- a/drivers/md/bcache/writeback.c
+++ b/drivers/md/bcache/writeback.c
@@ -397,8 +397,7 @@ static void read_dirty(struct closure *c
 		if (delay > 0 &&
 		    (KEY_START(&w->key) != dc->last_read ||
 		     jiffies_to_msecs(delay) > 50))
-			while (delay)
-				delay = schedule_timeout(delay);
+			delay = schedule_timeout_uninterruptible(delay);
 
 		dc->last_read	= KEY_OFFSET(&w->key);
 


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