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authorAndrew Morton <akpm@osdl.org>2005-07-28 01:07:18 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2005-07-28 08:38:59 -0700
commita5453be48e8def75a9c1b2177b82fa0e692c6e3a (patch)
treec1d224f0fb4db22e87567e1eea45001a7b11e51f
parent577a4f8102d54b504cb22eb021b89e957e8df18f (diff)
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[PATCH] bio_clone fix
Fix bug introduced in 2.6.11-rc2: when we clone a BIO we need to copy over the current index into it as well. It corrupts data with some MD setups. See http://bugzilla.kernel.org/show_bug.cgi?id=4946 Huuuuuuuuge thanks to Matthew Stapleton <matthew4196@gmail.com> for doggedly chasing this one down. Acked-by: Jens Axboe <axboe@suse.de> Cc: <linux-raid@vger.kernel.org> Cc: <dm-devel@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
-rw-r--r--fs/bio.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/bio.c b/fs/bio.c
index ca8f7a850fe3..249dd6bb66c8 100644
--- a/fs/bio.c
+++ b/fs/bio.c
@@ -261,6 +261,7 @@ inline void __bio_clone(struct bio *bio, struct bio *bio_src)
*/
bio->bi_vcnt = bio_src->bi_vcnt;
bio->bi_size = bio_src->bi_size;
+ bio->bi_idx = bio_src->bi_idx;
bio_phys_segments(q, bio);
bio_hw_segments(q, bio);
}