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| author | Kiyoshi Ueda <k-ueda@ct.jp.nec.com> | 2007-12-11 17:41:17 -0500 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2008-01-28 10:35:56 +0100 |
| commit | 3b11313a6c2a42425bf06e92528bda6affd58dec (patch) | |
| tree | c2d550b2954c106387f1ebe6badb387603002202 /include/linux/blkdev.h | |
| parent | 336cdb4003200a90f4fc52a4e9ccc2baa570fffb (diff) | |
| download | linux-3b11313a6c2a42425bf06e92528bda6affd58dec.tar.gz linux-3b11313a6c2a42425bf06e92528bda6affd58dec.tar.bz2 linux-3b11313a6c2a42425bf06e92528bda6affd58dec.zip | |
blk_end_request: add/export functions to get request size (take 4)
This patch adds/exports functions to get the size of request in bytes.
They are useful because blk_end_request interfaces take bytes
as a completed I/O size instead of sectors.
Signed-off-by: Kiyoshi Ueda <k-ueda@ct.jp.nec.com>
Signed-off-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'include/linux/blkdev.h')
| -rw-r--r-- | include/linux/blkdev.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 3b212f02db8d..aa2341df7932 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -737,6 +737,14 @@ extern void end_dequeued_request(struct request *, int); extern void blk_complete_request(struct request *); /* + * blk_end_request() takes bytes instead of sectors as a complete size. + * blk_rq_bytes() returns bytes left to complete in the entire request. + * blk_rq_cur_bytes() returns bytes left to complete in the current segment. + */ +extern unsigned int blk_rq_bytes(struct request *rq); +extern unsigned int blk_rq_cur_bytes(struct request *rq); + +/* * end_that_request_first/chunk() takes an uptodate argument. we account * any value <= as an io error. 0 means -EIO for compatability reasons, * any other < 0 value is the direct error type. An uptodate value of |