diff options
| author | FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> | 2008-04-11 12:56:49 +0200 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2008-04-21 09:50:08 +0200 |
| commit | c5dec1c3034f1ae3503efbf641ff3b0273b64797 (patch) | |
| tree | d8c2d81ff2d944a0ba43e6ef7284482898af8b3b /include/linux | |
| parent | 476a4813cfddf7cf159956cc0e2d3c830c1507e3 (diff) | |
block: convert bio_copy_user to bio_copy_user_iov
This patch enables bio_copy_user to take struct sg_iovec (renamed
bio_copy_user_iov). bio_copy_user uses bio_copy_user_iov internally as
bio_map_user uses bio_map_user_iov.
The major changes are:
- adds sg_iovec array to struct bio_map_data
- adds __bio_copy_iov that copy data between bio and
sg_iovec. bio_copy_user_iov and bio_uncopy_user use it.
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: Tejun Heo <htejun@gmail.com>
Cc: Mike Christie <michaelc@cs.wisc.edu>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/bio.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/bio.h b/include/linux/bio.h index 4c59bdccd3e..d259690863f 100644 --- a/include/linux/bio.h +++ b/include/linux/bio.h @@ -327,6 +327,8 @@ extern struct bio *bio_map_kern(struct request_queue *, void *, unsigned int, extern void bio_set_pages_dirty(struct bio *bio); extern void bio_check_pages_dirty(struct bio *bio); extern struct bio *bio_copy_user(struct request_queue *, unsigned long, unsigned int, int); +extern struct bio *bio_copy_user_iov(struct request_queue *, struct sg_iovec *, + int, int); extern int bio_uncopy_user(struct bio *); void zero_fill_bio(struct bio *bio); |