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authorKiyoshi Ueda <k-ueda@ct.jp.nec.com>2007-12-11 17:51:46 -0500
committerJens Axboe <jens.axboe@oracle.com>2008-01-28 10:37:08 +0100
commite3a04fe34a3ec81ddeddb6c73fb7299716cffbb0 (patch)
tree080d1ec1cc3d78b3aef4e95f5334f5b4c3da3498 /include/linux
parentaaa04c28cb9a1efd42541fdb7ab648231c2a2263 (diff)
blk_end_request: add bidi completion interface (take 4)
This patch adds a variant of the interface, blk_end_bidi_request(), which completes a bidi request. Bidi request must be completed as a whole, both rq and rq->next_rq at once. So the interface has 2 arguments for completion size. As for ->end_io, only rq->end_io is called (rq->next_rq->end_io is not called). So if special completion handling is needed, the handler must be set to rq->end_io. And the handler must take care of freeing next_rq too, since the interface doesn't care of it if rq->end_io is not NULL. Cc: Boaz Harrosh <bharrosh@panasas.com> 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')
-rw-r--r--include/linux/blkdev.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 63fe7542b3f..029b7097f9e 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -728,6 +728,8 @@ static inline void blk_run_address_space(struct address_space *mapping)
*/
extern int blk_end_request(struct request *rq, int error, int nr_bytes);
extern int __blk_end_request(struct request *rq, int error, int nr_bytes);
+extern int blk_end_bidi_request(struct request *rq, int error, int nr_bytes,
+ int bidi_bytes);
extern int end_that_request_first(struct request *, int, int);
extern int end_that_request_chunk(struct request *, int, int);
extern void end_that_request_last(struct request *, int);