This patch adds/exports functions to get the size of request in bytes. They are useful because blk_end_request() takes bytes as a completed I/O size instead of sectors.
Signed-off-by: Kiyoshi Ueda <[EMAIL PROTECTED]> Signed-off-by: Jun'ichi Nomura <[EMAIL PROTECTED]> --- block/ll_rw_blk.c | 25 ++++++++++++++++++++++--- include/linux/blkdev.h | 8 ++++++++ 2 files changed, 30 insertions(+), 3 deletions(-) Index: 2.6.24-rc3-mm2/include/linux/blkdev.h =================================================================== --- 2.6.24-rc3-mm2.orig/include/linux/blkdev.h +++ 2.6.24-rc3-mm2/include/linux/blkdev.h @@ -736,6 +736,14 @@ extern void end_dequeued_request(struct 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 Index: 2.6.24-rc3-mm2/block/ll_rw_blk.c =================================================================== --- 2.6.24-rc3-mm2.orig/block/ll_rw_blk.c +++ 2.6.24-rc3-mm2/block/ll_rw_blk.c @@ -3701,13 +3701,32 @@ static inline void __end_request(struct } } -static unsigned int rq_byte_size(struct request *rq) +/** + * blk_rq_bytes - Returns bytes left to complete in the entire request + **/ +unsigned int blk_rq_bytes(struct request *rq) { if (blk_fs_request(rq)) return rq->hard_nr_sectors << 9; return rq->data_len; } +EXPORT_SYMBOL_GPL(blk_rq_bytes); + +/** + * blk_rq_cur_bytes - Returns bytes left to complete in the current segment + **/ +unsigned int blk_rq_cur_bytes(struct request *rq) +{ + if (blk_fs_request(rq)) + return rq->current_nr_sectors << 9; + + if (rq->bio) + return rq->bio->bi_size; + + return rq->data_len; +} +EXPORT_SYMBOL_GPL(blk_rq_cur_bytes); /** * end_queued_request - end all I/O on a queued request @@ -3722,7 +3741,7 @@ static unsigned int rq_byte_size(struct **/ void end_queued_request(struct request *rq, int uptodate) { - __end_request(rq, uptodate, rq_byte_size(rq), 1); + __end_request(rq, uptodate, blk_rq_bytes(rq), 1); } EXPORT_SYMBOL(end_queued_request); @@ -3739,7 +3758,7 @@ EXPORT_SYMBOL(end_queued_request); **/ void end_dequeued_request(struct request *rq, int uptodate) { - __end_request(rq, uptodate, rq_byte_size(rq), 0); + __end_request(rq, uptodate, blk_rq_bytes(rq), 0); } EXPORT_SYMBOL(end_dequeued_request); - To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html