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authorKent Overstreet <kmo@daterainc.com>2013-07-11 22:39:53 -0700
committerKent Overstreet <kmo@daterainc.com>2014-01-08 13:05:09 -0800
commitc78afc6261b09f74abff8c0719b80692a4959768 (patch)
tree4b3d5e421fad23e3bd0866a0b18c845acf297506 /include/linux/blkdev.h
parent5f5837d2d650db25b9153b91535e67a96b265f58 (diff)
bcache/md: Use raid stripe size
Now that we've got code for raid5/6 stripe awareness, bcache just needs to know about the stripes and when writing partial stripes is expensive - we probably don't want to enable this optimization for raid1 or 10, even though they have stripes. So add a flag to queue_limits. Signed-off-by: Kent Overstreet <kmo@daterainc.com>
Diffstat (limited to 'include/linux/blkdev.h')
-rw-r--r--include/linux/blkdev.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 02cb6f0ea71..0375654adb2 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -291,6 +291,7 @@ struct queue_limits {
unsigned char discard_misaligned;
unsigned char cluster;
unsigned char discard_zeroes_data;
+ unsigned char raid_partial_stripes_expensive;
};
struct request_queue {