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| author | Justin M. Forbes <jforbes@redhat.com> | 2015-01-08 17:04:10 -0600 |
|---|---|---|
| committer | Justin M. Forbes <jforbes@redhat.com> | 2015-01-08 17:04:10 -0600 |
| commit | aa5585d52ddd6fee3fbc64e2985c2acacfc99d7e (patch) | |
| tree | 0af4e919c942dceabf45c016830908298e1411e3 /dm-cache-only-use-overwrite-optimisation-for-promoti.patch | |
| parent | 0ace95ceecdccb5f3ea208b907e0d99e3219dc54 (diff) | |
| download | kernel-aa5585d52ddd6fee3fbc64e2985c2acacfc99d7e.tar.gz kernel-aa5585d52ddd6fee3fbc64e2985c2acacfc99d7e.tar.xz kernel-aa5585d52ddd6fee3fbc64e2985c2acacfc99d7e.zip | |
Linux v3.17.8
Diffstat (limited to 'dm-cache-only-use-overwrite-optimisation-for-promoti.patch')
| -rw-r--r-- | dm-cache-only-use-overwrite-optimisation-for-promoti.patch | 32 |
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 12a79113..00000000 --- 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 - |