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block: use bio_has_data() to check for data carrying bio 

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
This commit is contained in:
Jens Axboe 2008-08-08 11:04:44 +02:00
parent 7a67f63b32
commit a9c701e594
2 changed files with 2 additions and 5 deletions
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5
block/blk-core.c
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@ -1490,10 +1490,7 @@ void submit_bio(int rw, struct bio *bio)
* If it's a regular read/write or a barrier with data attached,
* go through the normal accounting stuff before submission.
*/
if (!bio_empty_barrier(bio)) {
BIO_BUG_ON(!bio->bi_size);
BIO_BUG_ON(!bio->bi_io_vec);
if (bio_has_data(bio)) {
if (rw & WRITE) {
count_vm_events(PGPGOUT, count);

2
include/linux/bio.h
View File

@ -185,7 +185,7 @@ struct bio {
#define bio_failfast(bio) ((bio)->bi_rw & (1 << BIO_RW_FAILFAST))
#define bio_rw_ahead(bio) ((bio)->bi_rw & (1 << BIO_RW_AHEAD))
#define bio_rw_meta(bio) ((bio)->bi_rw & (1 << BIO_RW_META))
#define bio_empty_barrier(bio) (bio_barrier(bio) && !(bio)->bi_size)
#define bio_empty_barrier(bio) (bio_barrier(bio) && !bio_has_data(bio))
static inline unsigned int bio_cur_sectors(struct bio *bio)
{