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-rw-r--r--dm-cache-only-use-overwrite-optimisation-for-promoti.patch32
1 files changed, 0 insertions, 32 deletions
diff --git a/dm-cache-only-use-overwrite-optimisation-for-promoti.patch b/dm-cache-only-use-overwrite-optimisation-for-promoti.patch
deleted file mode 100644
index 12a79113d..000000000
--- a/dm-cache-only-use-overwrite-optimisation-for-promoti.patch
+++ /dev/null
@@ -1,32 +0,0 @@
-From: Joe Thornber <ejt@redhat.com>
-Date: Thu, 27 Nov 2014 12:21:08 +0000
-Subject: [PATCH] dm cache: only use overwrite optimisation for promotion when
- in writeback mode
-
-Overwrite causes the cache block and origin blocks to diverge, which
-is only allowed in writeback mode.
-
-Signed-off-by: Joe Thornber <ejt@redhat.com>
-Signed-off-by: Mike Snitzer <snitzer@redhat.com>
-Cc: stable@vger.kernel.org
----
- drivers/md/dm-cache-target.c | 3 ++-
- 1 file changed, 2 insertions(+), 1 deletion(-)
-
-diff --git a/drivers/md/dm-cache-target.c b/drivers/md/dm-cache-target.c
-index 7130505c2425..6f7086355691 100644
---- a/drivers/md/dm-cache-target.c
-+++ b/drivers/md/dm-cache-target.c
-@@ -1070,7 +1070,8 @@ static void issue_copy(struct dm_cache_migration *mg)
-
- avoid = is_discarded_oblock(cache, mg->new_oblock);
-
-- if (!avoid && bio_writes_complete_block(cache, bio)) {
-+ if (writeback_mode(&cache->features) &&
-+ !avoid && bio_writes_complete_block(cache, bio)) {
- issue_overwrite(mg, bio);
- return;
- }
---
-2.1.0
-