[10/13] [PATCH] bio_clone fix
From: Chris Wright
Date: Wed Aug 03 2005 - 02:18:34 EST
-stable review patch. If anyone has any objections, please let us know.
------------------
[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@xxxxxxxxx> for doggedly
chasing this one down.
Acked-by: Jens Axboe <axboe@xxxxxxx>
Cc: <linux-raid@xxxxxxxxxxxxxxx>
Cc: <dm-devel@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
Signed-off-by: Linus Torvalds <torvalds@xxxxxxxx>
Signed-off-by: Chris Wright <chrisw@xxxxxxxx>
---
fs/bio.c | 1 +
1 files changed, 1 insertion(+)
diff --git a/fs/bio.c b/fs/bio.c
--- a/fs/bio.c
+++ b/fs/bio.c
@@ -261,6 +261,7 @@ inline void __bio_clone(struct bio *bio,
*/
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);
}
-
-
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