From: Nicholas Swenson <nks@daterainc.com>
Date: Thu, 23 Jan 2014 23:21:02 +0000 (-0800)
Subject: bcache: stop moving_gc marking buckets that can't be moved.
X-Git-Tag: firefly_0821_release~176^2~4188^2^2~12
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=3f6ef38110b6955327fea3105f004a3b61a3f65f;p=firefly-linux-kernel-4.4.55.git

bcache: stop moving_gc marking buckets that can't be moved.

Signed-off-by: Nicholas Swenson <nks@daterainc.com>
---

diff --git a/drivers/md/bcache/movinggc.c b/drivers/md/bcache/movinggc.c
index 5e8e58701d37..cd7490311e51 100644
--- a/drivers/md/bcache/movinggc.c
+++ b/drivers/md/bcache/movinggc.c
@@ -215,7 +215,10 @@ void bch_moving_gc(struct cache_set *c)
 		ca->heap.used = 0;
 
 		for_each_bucket(b, ca) {
-			if (!GC_SECTORS_USED(b))
+			if (GC_MARK(b) == GC_MARK_METADATA ||
+			    !GC_SECTORS_USED(b) ||
+			    GC_SECTORS_USED(b) == ca->sb.bucket_size ||
+			    atomic_read(&b->pin))
 				continue;
 
 			if (!heap_full(&ca->heap)) {