Commit 29ac8e05 authored May 16, 2005 by NeilBrown Committed by Linus Torvalds May 17, 2005

[PATCH] md: fix splitting of md/linear request that cross a device boundary



When a request crosses a boundary between devices, it needs to be split.
But where we should calculate the amount of the request before the boundary
to find the split-point, we care currently calculating the amount that is
*after* the boundary !!!

Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

parent 8f332287

drivers/md/linear.c

+2 −3

Original line number	Diff line number	Diff line
		@@ -270,8 +270,7 @@ static int linear_make_request (request_queue_t q, struct bio bio)
		*/
		struct bio_pair *bp;
		bp = bio_split(bio, bio_split_pool,
		(bio->bi_sector + (bio->bi_size >> 9) -
		(tmp_dev->offset + tmp_dev->size))<<1);
		((tmp_dev->offset + tmp_dev->size)<<1) - bio->bi_sector);
		if (linear_make_request(q, &bp->bio1))
		generic_make_request(&bp->bio1);
		if (linear_make_request(q, &bp->bio2))

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