diff options
| -rw-r--r-- | drivers/md/md.c | 27 | ||||
| -rw-r--r-- | drivers/md/md.h | 3 |
2 files changed, 23 insertions, 7 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c index 528c1452ce54..65ad837aeb54 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -203,6 +203,14 @@ struct bio *bio_alloc_mddev(gfp_t gfp_mask, int nr_iovecs, } EXPORT_SYMBOL_GPL(bio_alloc_mddev); +static struct bio *md_bio_alloc_sync(struct mddev *mddev) +{ + if (!mddev->sync_set) + return bio_alloc(GFP_NOIO, 1); + + return bio_alloc_bioset(GFP_NOIO, 1, mddev->sync_set); +} + /* * We have a system wide 'event count' that is incremented * on any 'interesting' event, and readers of /proc/mdstat @@ -467,8 +475,6 @@ static void mddev_delayed_delete(struct work_struct *ws); static void mddev_put(struct mddev *mddev) { - struct bio_set *bs = NULL; - if (!atomic_dec_and_lock(&mddev->active, &all_mddevs_lock)) return; if (!mddev->raid_disks && list_empty(&mddev->disks) && @@ -476,8 +482,12 @@ static void mddev_put(struct mddev *mddev) /* Array is not configured at all, and not held active, * so destroy it */ list_del_init(&mddev->all_mddevs); - bs = mddev->bio_set; + if (mddev->bio_set) + bioset_free(mddev->bio_set); + if (mddev->sync_set) + bioset_free(mddev->sync_set); mddev->bio_set = NULL; + mddev->sync_set = NULL; if (mddev->gendisk) { /* We did a probe so need to clean up. Call * queue_work inside the spinlock so that @@ -490,8 +500,6 @@ static void mddev_put(struct mddev *mddev) kfree(mddev); } spin_unlock(&all_mddevs_lock); - if (bs) - bioset_free(bs); } static void md_safemode_timeout(unsigned long data); @@ -756,7 +764,7 @@ void md_super_write(struct mddev *mddev, struct md_rdev *rdev, if (test_bit(Faulty, &rdev->flags)) return; - bio = bio_alloc_mddev(GFP_NOIO, 1, mddev); + bio = md_bio_alloc_sync(mddev); atomic_inc(&rdev->nr_pending); @@ -788,7 +796,7 @@ int md_super_wait(struct mddev *mddev) int sync_page_io(struct md_rdev *rdev, sector_t sector, int size, struct page *page, int op, int op_flags, bool metadata_op) { - struct bio *bio = bio_alloc_mddev(GFP_NOIO, 1, rdev->mddev); + struct bio *bio = md_bio_alloc_sync(rdev->mddev); int ret; bio->bi_bdev = (metadata_op && rdev->meta_bdev) ? @@ -5437,6 +5445,11 @@ int md_run(struct mddev *mddev) if (!mddev->bio_set) return -ENOMEM; } + if (mddev->sync_set == NULL) { + mddev->sync_set = bioset_create(BIO_POOL_SIZE, 0); + if (!mddev->sync_set) + return -ENOMEM; + } spin_lock(&pers_lock); pers = find_pers(mddev->level, mddev->clevel); diff --git a/drivers/md/md.h b/drivers/md/md.h index 63d342d560b8..991f0fe2dcc6 100644 --- a/drivers/md/md.h +++ b/drivers/md/md.h @@ -444,6 +444,9 @@ struct mddev { struct attribute_group *to_remove; struct bio_set *bio_set; + struct bio_set *sync_set; /* for sync operations like + * metadata and bitmap writes + */ /* Generic flush handling. * The last to finish preflush schedules a worker to submit |