diff options
Diffstat (limited to 'drivers/block')
| -rw-r--r-- | drivers/block/loop.c | 26 |
1 files changed, 7 insertions, 19 deletions
diff --git a/drivers/block/loop.c b/drivers/block/loop.c index ddae8082589..9ca4bb01465 100644 --- a/drivers/block/loop.c +++ b/drivers/block/loop.c @@ -511,11 +511,7 @@ out: */ static void loop_add_bio(struct loop_device *lo, struct bio *bio) { - if (lo->lo_biotail) { - lo->lo_biotail->bi_next = bio; - lo->lo_biotail = bio; - } else - lo->lo_bio = lo->lo_biotail = bio; + bio_list_add(&lo->lo_bio_list, bio); } /* @@ -523,16 +519,7 @@ static void loop_add_bio(struct loop_device *lo, struct bio *bio) */ static struct bio *loop_get_bio(struct loop_device *lo) { - struct bio *bio; - - if ((bio = lo->lo_bio)) { - if (bio == lo->lo_biotail) - lo->lo_biotail = NULL; - lo->lo_bio = bio->bi_next; - bio->bi_next = NULL; - } - - return bio; + return bio_list_pop(&lo->lo_bio_list); } static int loop_make_request(struct request_queue *q, struct bio *old_bio) @@ -609,12 +596,13 @@ static int loop_thread(void *data) set_user_nice(current, -20); - while (!kthread_should_stop() || lo->lo_bio) { + while (!kthread_should_stop() || !bio_list_empty(&lo->lo_bio_list)) { wait_event_interruptible(lo->lo_event, - lo->lo_bio || kthread_should_stop()); + !bio_list_empty(&lo->lo_bio_list) || + kthread_should_stop()); - if (!lo->lo_bio) + if (bio_list_empty(&lo->lo_bio_list)) continue; spin_lock_irq(&lo->lo_lock); bio = loop_get_bio(lo); @@ -841,7 +829,7 @@ static int loop_set_fd(struct loop_device *lo, fmode_t mode, lo->old_gfp_mask = mapping_gfp_mask(mapping); mapping_set_gfp_mask(mapping, lo->old_gfp_mask & ~(__GFP_IO|__GFP_FS)); - lo->lo_bio = lo->lo_biotail = NULL; + bio_list_init(&lo->lo_bio_list); /* * set queue make_request_fn, and add limits based on lower level |