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| author | FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> | 2008-08-25 20:36:08 +0200 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2008-08-27 09:50:19 +0200 |
| commit | 76029ff37f31dad64641489c610d98955217bb68 (patch) | |
| tree | e8f729fa6288676be357295141a0950f171a62d8 /usr | |
| parent | block: submit_bh() inadvertently discards barrier flag on a sync write (diff) | |
| download | linux-76029ff37f31dad64641489c610d98955217bb68.tar.xz linux-76029ff37f31dad64641489c610d98955217bb68.zip | |
bio: fix bio_copy_kern() handling of bio->bv_len
The commit 68154e90c9d1492d570671ae181d9a8f8530da55 introduced
bio_copy_kern() to add bounce support to blk_rq_map_kern.
bio_copy_kern() uses bio->bv_len to copy data for READ commands after
the completion but it doesn't work with a request that partially
completed. SCSI always completes a PC request as a whole but seems
some don't.
This patch fixes bio_copy_kern to handle the above case. As
bio_copy_user does, bio_copy_kern uses struct bio_map_data to store
struct bio_vec.
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Reported-by: Nix <nix@esperi.org.uk>
Tested-by: Nix <nix@esperi.org.uk>
Cc: stable@kernel.org
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'usr')
0 files changed, 0 insertions, 0 deletions