Messages in this thread Patches in this message | | | From | NeilBrown <> | Date | Tue, 31 Jul 2007 12:16:45 +1000 | Subject | [PATCH 011 of 35] Stop exporting blk_rq_bio_prep |
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blk_rq_bio_prep is exported for use in exactly one place. That place can benefit from using the new blk_rq_append_bio instead. So - change dm-emc to call blk_rq_append_bio - stop exporting blk_rq_bio_prep, and - initialise rq_disk in blk_rq_bio_prep, as dm-emc needs it.
Signed-off-by: Neil Brown <neilb@suse.de>
### Diffstat output ./block/ll_rw_blk.c | 10 ++++++---- ./drivers/md/dm-emc.c | 10 +--------- ./include/linux/blkdev.h | 1 - 3 files changed, 7 insertions(+), 14 deletions(-)
diff .prev/block/ll_rw_blk.c ./block/ll_rw_blk.c --- .prev/block/ll_rw_blk.c 2007-07-31 11:20:55.000000000 +1000 +++ ./block/ll_rw_blk.c 2007-07-31 11:20:56.000000000 +1000 @@ -43,6 +43,8 @@ static void init_request_from_bio(struct static int __make_request(struct request_queue *q, struct bio *bio); static struct io_context *current_io_context(gfp_t gfp_flags, int node); static void blk_recalc_rq_segments(struct request *rq); +static void blk_rq_bio_prep(struct request_queue *q, struct request *rq, + struct bio *bio); /* * For the allocated request tables @@ -3628,8 +3630,8 @@ void end_request(struct request *req, in EXPORT_SYMBOL(end_request); -void blk_rq_bio_prep(struct request_queue *q, struct request *rq, - struct bio *bio) +static void blk_rq_bio_prep(struct request_queue *q, struct request *rq, + struct bio *bio) { /* first two bits are identical in rq->cmd_flags and bio->bi_rw */ rq->cmd_flags |= (bio->bi_rw & 3); @@ -3644,10 +3646,10 @@ void blk_rq_bio_prep(struct request_queu rq->buffer = blk_rq_data(rq); rq->current_nr_sectors = blk_rq_cur_sectors(rq); rq->hard_cur_sectors = rq->current_nr_sectors; + if (bio->bi_bdev) + rq->rq_disk = bio->bi_bdev->bd_disk; } -EXPORT_SYMBOL(blk_rq_bio_prep); - void *blk_rq_data(struct request *rq) { struct bio_vec bvec; diff .prev/drivers/md/dm-emc.c ./drivers/md/dm-emc.c --- .prev/drivers/md/dm-emc.c 2007-07-31 11:20:51.000000000 +1000 +++ ./drivers/md/dm-emc.c 2007-07-31 11:20:56.000000000 +1000 @@ -106,15 +106,7 @@ static struct request *get_failover_req( return NULL; } - rq->bio = rq->biotail = bio; - blk_rq_bio_prep(q, rq, bio); - - rq->rq_disk = bdev->bd_contains->bd_disk; - - /* bio backed don't set data */ - rq->buffer = rq->data = NULL; - /* rq data_len used for pc cmd's request_bufflen */ - rq->data_len = bio->bi_size; + blk_rq_append_bio(q, rq, bio); rq->sense = h->sense; memset(rq->sense, 0, SCSI_SENSE_BUFFERSIZE); diff .prev/include/linux/blkdev.h ./include/linux/blkdev.h --- .prev/include/linux/blkdev.h 2007-07-31 11:20:55.000000000 +1000 +++ ./include/linux/blkdev.h 2007-07-31 11:20:56.000000000 +1000 @@ -837,7 +837,6 @@ static inline struct request *blk_map_qu return bqt->tag_index[tag]; } -extern void blk_rq_bio_prep(struct request_queue *, struct request *, struct bio *); extern int blkdev_issue_flush(struct block_device *, sector_t *); #define MAX_PHYS_SEGMENTS 128 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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