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Stop exporting blk_rq_bio_prep 

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>

diff .prev/block/ll_rw_blk.c ./block/ll_rw_blk.c
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
This commit is contained in:
NeilBrown 2007-08-16 13:31:28 +02:00 committed by Jens Axboe
parent 3001ca7712
commit 66846572bf
3 changed files with 8 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
block/ll_rw_blk.c
View File

@ -43,6 +43,8 @@ static void init_request_from_bio(struct request *req, struct bio *bio);
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
@ -3665,8 +3667,8 @@ void end_request(struct request *req, int uptodate)
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);
@ -3680,9 +3682,10 @@ void blk_rq_bio_prep(struct request_queue *q, struct request *rq,
rq->data_len = bio->bi_size;
rq->bio = rq->biotail = bio;
}
EXPORT_SYMBOL(blk_rq_bio_prep);
if (bio->bi_bdev)
rq->rq_disk = bio->bi_bdev->bd_disk;
}
int kblockd_schedule_work(struct work_struct *work)
{

10
drivers/md/dm-emc.c
View File

@ -109,15 +109,7 @@ static struct request *get_failover_req(struct emc_handler *h,
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);

1
include/linux/blkdev.h
View File

@ -823,7 +823,6 @@ static inline struct request *blk_map_queue_find_tag(struct blk_queue_tag *bqt,
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