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 <[email protected]>
### 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
--- .prev/block/ll_rw_blk.c 2007-09-27 16:36:53.000000000 +1000
+++ ./block/ll_rw_blk.c 2007-09-27 16:37:38.000000000 +1000
@@ -428,7 +428,6 @@ static void queue_flush(struct request_q
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;
@@ -525,55 +524,21 @@ int blk_do_ordered(struct request_queue
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;
}
diff .prev/include/linux/blkdev.h ./include/linux/blkdev.h
--- .prev/include/linux/blkdev.h 2007-09-27 16:36:53.000000000 +1000
+++ ./include/linux/blkdev.h 2007-09-27 16:37:38.000000000 +1000
@@ -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;
-
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