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author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-01-29 08:51:32 +1100 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-01-29 08:51:32 +1100 |
commit | f0f0052069989b80d2a3e50c9cd2f2a650bc1aea (patch) | |
tree | 40ff39bc341aed8318a54d1bd61a381f41844f71 /include | |
parent | 68fbda7de07e56eb90dd6e58a162527411b388b1 (diff) | |
parent | a65b58663d983e588aed8d1bfc75edaac2527fa7 (diff) | |
download | linux-f0f0052069989b80d2a3e50c9cd2f2a650bc1aea.tar.bz2 |
Merge branch 'blk-end-request' of git://git.kernel.dk/linux-2.6-block
* 'blk-end-request' of git://git.kernel.dk/linux-2.6-block: (30 commits)
blk_end_request: changing xsysace (take 4)
blk_end_request: changing ub (take 4)
blk_end_request: cleanup of request completion (take 4)
blk_end_request: cleanup 'uptodate' related code (take 4)
blk_end_request: remove/unexport end_that_request_* (take 4)
blk_end_request: changing scsi (take 4)
blk_end_request: add bidi completion interface (take 4)
blk_end_request: changing ide-cd (take 4)
blk_end_request: add callback feature (take 4)
blk_end_request: changing ide normal caller (take 4)
blk_end_request: changing cpqarray (take 4)
blk_end_request: changing cciss (take 4)
blk_end_request: changing ide-scsi (take 4)
blk_end_request: changing s390 (take 4)
blk_end_request: changing mmc (take 4)
blk_end_request: changing i2o_block (take 4)
blk_end_request: changing viocd (take 4)
blk_end_request: changing xen-blkfront (take 4)
blk_end_request: changing viodasd (take 4)
blk_end_request: changing sx8 (take 4)
...
Diffstat (limited to 'include')
-rw-r--r-- | include/linux/blkdev.h | 31 |
1 files changed, 18 insertions, 13 deletions
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 2483a05231c7..b71c3900810d 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -464,6 +464,8 @@ enum { #define blk_fua_rq(rq) ((rq)->cmd_flags & REQ_FUA) #define blk_bidi_rq(rq) ((rq)->next_rq != NULL) #define blk_empty_barrier(rq) (blk_barrier_rq(rq) && blk_fs_request(rq) && !(rq)->hard_nr_sectors) +/* rq->queuelist of dequeued request must be list_empty() */ +#define blk_queued_rq(rq) (!list_empty(&(rq)->queuelist)) #define list_entry_rq(ptr) list_entry((ptr), struct request, queuelist) @@ -643,29 +645,32 @@ static inline void blk_run_address_space(struct address_space *mapping) } /* - * end_request() and friends. Must be called with the request queue spinlock - * acquired. All functions called within end_request() _must_be_ atomic. + * blk_end_request() and friends. + * __blk_end_request() and end_request() must be called with + * the request queue spinlock acquired. * * Several drivers define their own end_request and call - * end_that_request_first() and end_that_request_last() - * for parts of the original function. This prevents - * code duplication in drivers. + * blk_end_request() for parts of the original function. + * This prevents code duplication in drivers. */ -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); +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 void end_request(struct request *, int); extern void end_queued_request(struct request *, int); extern void end_dequeued_request(struct request *, int); +extern int blk_end_request_callback(struct request *rq, int error, int nr_bytes, + int (drv_callback)(struct request *)); extern void blk_complete_request(struct request *); /* - * 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 - * 1 indicates successful io completion + * 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. */ -#define end_io_error(uptodate) (unlikely((uptodate) <= 0)) +extern unsigned int blk_rq_bytes(struct request *rq); +extern unsigned int blk_rq_cur_bytes(struct request *rq); static inline void blkdev_dequeue_request(struct request *req) { |