3.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: Kent Overstreet <k...@daterainc.com>
commit 2f6cf0de0281d210061ce976f2d42d246adc75bb upstream.
The memcpy() in bio_copy_data() was using the wrong offset vars, leading
to data corruption in weird unusual setups.
Signed-off-by: Kent Overstreet <k...@daterainc.com>
Cc: Jens Axboe <ax...@kernel.dk>
Signed-off-by: Linus Torvalds <torva...@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
fs/bio.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/fs/bio.c
+++ b/fs/bio.c
@@ -917,8 +917,8 @@ void bio_copy_data(struct bio *dst, stru
src_p = kmap_atomic(src_bv->bv_page);
dst_p = kmap_atomic(dst_bv->bv_page);
- memcpy(dst_p + dst_bv->bv_offset,
- src_p + src_bv->bv_offset,
+ memcpy(dst_p + dst_offset,
+ src_p + src_offset,
bytes);
kunmap_atomic(dst_p);
--
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