Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=f6f953aa99d456aff44ffdb1c77061d1a010eae2
Commit: f6f953aa99d456aff44ffdb1c77061d1a010eae2
Parent: 14e713446aaca97dbe590fe845f7dcbd74ddbee2
Author: Arne Redlich <[EMAIL PROTECTED]>
AuthorDate: Tue Jul 31 00:37:57 2007 -0700
Committer: Linus Torvalds <[EMAIL PROTECTED]>
CommitDate: Tue Jul 31 15:39:38 2007 -0700
md: handle writes to broken raid10 arrays gracefully
When writing to a broken array, raid10 currently happily emits empty bio
lists. IOW, the master bio will never be completed, sending writers to
UNINTERRUPTIBLE_SLEEP forever.
Signed-off-by: Arne Redlich <[EMAIL PROTECTED]>
Acked-by: Neil Brown <[EMAIL PROTECTED]>
Cc: <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]>
---
drivers/md/raid10.c | 7 +++++++
1 files changed, 7 insertions(+), 0 deletions(-)
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index 0c97bf4..4e53792 100644
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -917,6 +917,13 @@ static int make_request(struct request_queue *q, struct
bio * bio)
bio_list_add(&bl, mbio);
}
+ if (unlikely(!atomic_read(&r10_bio->remaining))) {
+ /* the array is dead */
+ md_write_end(mddev);
+ raid_end_bio_io(r10_bio);
+ return 0;
+ }
+
bitmap_startwrite(mddev->bitmap, bio->bi_sector, r10_bio->sectors, 0);
spin_lock_irqsave(&conf->device_lock, flags);
bio_list_merge(&conf->pending_bio_list, &bl);
-
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