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authorNeilBrown <neilb@suse.de>2006-01-06 00:20:17 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-01-06 08:34:03 -0800
commitca65b73bd9c301d243df93780f7b26579e6c9204 (patch)
tree1ca8157e11033989ee94c20b1f2d4c936f9dc09c /include
parent6cce3b23f6f8e974c00af7a9b88f1d413ba368a8 (diff)
[PATCH] md: fix raid6 resync check/repair code
raid6 currently does not check the P/Q syndromes when doing a resync, it just calculates the correct value and writes it. Doing the check can reduce writes (often to 0) for a resync, and it is needed to properly implement the echo check > sync_action operation. This patch implements the appropriate checks and tidies up some related code. It also allows raid6 user-requested resync to bypass the intent bitmap. Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include')
-rw-r--r--include/linux/raid/raid5.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/raid/raid5.h b/include/linux/raid/raid5.h
index f025ba6fb14..e9c1c0d4f90 100644
--- a/include/linux/raid/raid5.h
+++ b/include/linux/raid/raid5.h
@@ -228,6 +228,8 @@ struct raid5_private_data {
* Cleared when a sync completes.
*/
+ struct page *spare_page; /* Used when checking P/Q in raid6 */
+
/*
* Free stripes pool
*/