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Remove flush_dry_bio_endio 

The entire function of flush_dry_bio_endio is to undo the effects
of bio_endio (when called on a barrier request).  So remove the
function and the call to bio_endio.

This allows us to remove "bi_size" from "struct request_queue".

Signed-off-by: Neil Brown <neilb@suse.de>

### Diffstat output
 ./block/ll_rw_blk.c      |   39 ++-------------------------------------
 ./include/linux/blkdev.h |    1 -
 2 files changed, 2 insertions(+), 38 deletions(-)

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 2007-09-27 12:46:11 +02:00 committed by Jens Axboe
parent f5ff8422bb
commit d24517d793
2 changed files with 2 additions and 38 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

39
block/ll_rw_blk.c
View File

@ -431,7 +431,6 @@ static void queue_flush(struct request_queue *q, unsigned which)
static inline struct request *start_ordered(struct request_queue *q,
struct request *rq)
{
q->bi_size = 0;
q->orderr = 0;
q->ordered = q->next_ordered;
q->ordseq |= QUEUE_ORDSEQ_STARTED;
@ -528,55 +527,21 @@ int blk_do_ordered(struct request_queue *q, struct request **rqp)
return 1;
}
static int flush_dry_bio_endio(struct bio *bio, unsigned int bytes, int error)
{
struct request_queue *q = bio->bi_private;
/*
* This is dry run, restore bio_sector and size. We'll finish
* this request again with the original bi_end_io after an
* error occurs or post flush is complete.
*/
q->bi_size += bytes;
if (bio->bi_size)
return 1;
/* Reset bio */
set_bit(BIO_UPTODATE, &bio->bi_flags);
bio->bi_size = q->bi_size;
bio->bi_sector -= (q->bi_size >> 9);
q->bi_size = 0;
return 0;
}
static int ordered_bio_endio(struct request *rq, struct bio *bio,
unsigned int nbytes, int error)
{
struct request_queue *q = rq->q;
bio_end_io_t *endio;
void *private;
if (&q->bar_rq != rq)
return 0;
/*
* Okay, this is the barrier request in progress, dry finish it.
* Okay, this is the barrier request in progress, just
* record the error;
*/
if (error && !q->orderr)
q->orderr = error;
endio = bio->bi_end_io;
private = bio->bi_private;
bio->bi_end_io = flush_dry_bio_endio;
bio->bi_private = q;
bio_endio(bio, nbytes, error);
bio->bi_end_io = endio;
bio->bi_private = private;
return 1;
}

1
include/linux/blkdev.h
View File

@ -471,7 +471,6 @@ struct request_queue
int orderr, ordcolor;
struct request pre_flush_rq, bar_rq, post_flush_rq;
struct request *orig_bar_rq;
unsigned int bi_size;
struct mutex sysfs_lock;