diff options
Diffstat (limited to 'drivers/md')
-rw-r--r-- | drivers/md/md.c | 45 | ||||
-rw-r--r-- | drivers/md/raid1.c | 1 | ||||
-rw-r--r-- | drivers/md/raid10.c | 2 |
3 files changed, 26 insertions, 22 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c index 324a366..e71c5fa 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -371,10 +371,15 @@ static void md_end_flush(struct bio *bio, int err) bio_put(bio); } -static void submit_flushes(mddev_t *mddev) +static void md_submit_flush_data(struct work_struct *ws); + +static void submit_flushes(struct work_struct *ws) { + mddev_t *mddev = container_of(ws, mddev_t, flush_work); mdk_rdev_t *rdev; + INIT_WORK(&mddev->flush_work, md_submit_flush_data); + atomic_set(&mddev->flush_pending, 1); rcu_read_lock(); list_for_each_entry_rcu(rdev, &mddev->disks, same_set) if (rdev->raid_disk >= 0 && @@ -397,6 +402,8 @@ static void submit_flushes(mddev_t *mddev) rdev_dec_pending(rdev, mddev); } rcu_read_unlock(); + if (atomic_dec_and_test(&mddev->flush_pending)) + queue_work(md_wq, &mddev->flush_work); } static void md_submit_flush_data(struct work_struct *ws) @@ -404,8 +411,6 @@ static void md_submit_flush_data(struct work_struct *ws) mddev_t *mddev = container_of(ws, mddev_t, flush_work); struct bio *bio = mddev->flush_bio; - atomic_set(&mddev->flush_pending, 1); - if (bio->bi_size == 0) /* an empty barrier - all done */ bio_endio(bio, 0); @@ -414,10 +419,9 @@ static void md_submit_flush_data(struct work_struct *ws) if (mddev->pers->make_request(mddev, bio)) generic_make_request(bio); } - if (atomic_dec_and_test(&mddev->flush_pending)) { - mddev->flush_bio = NULL; - wake_up(&mddev->sb_wait); - } + + mddev->flush_bio = NULL; + wake_up(&mddev->sb_wait); } void md_flush_request(mddev_t *mddev, struct bio *bio) @@ -429,13 +433,8 @@ void md_flush_request(mddev_t *mddev, struct bio *bio) mddev->flush_bio = bio; spin_unlock_irq(&mddev->write_lock); - atomic_set(&mddev->flush_pending, 1); - INIT_WORK(&mddev->flush_work, md_submit_flush_data); - - submit_flushes(mddev); - - if (atomic_dec_and_test(&mddev->flush_pending)) - queue_work(md_wq, &mddev->flush_work); + INIT_WORK(&mddev->flush_work, submit_flushes); + queue_work(md_wq, &mddev->flush_work); } EXPORT_SYMBOL(md_flush_request); @@ -1337,7 +1336,7 @@ super_90_rdev_size_change(mdk_rdev_t *rdev, sector_t num_sectors) md_super_write(rdev->mddev, rdev, rdev->sb_start, rdev->sb_size, rdev->sb_page); md_super_wait(rdev->mddev); - return num_sectors / 2; /* kB for sysfs */ + return num_sectors; } @@ -1704,7 +1703,7 @@ super_1_rdev_size_change(mdk_rdev_t *rdev, sector_t num_sectors) md_super_write(rdev->mddev, rdev, rdev->sb_start, rdev->sb_size, rdev->sb_page); md_super_wait(rdev->mddev); - return num_sectors / 2; /* kB for sysfs */ + return num_sectors; } static struct super_type super_types[] = { @@ -4338,6 +4337,8 @@ static int md_alloc(dev_t dev, char *name) if (mddev->kobj.sd && sysfs_create_group(&mddev->kobj, &md_bitmap_group)) printk(KERN_DEBUG "pointless warning\n"); + + blk_queue_flush(mddev->queue, REQ_FLUSH | REQ_FUA); abort: mutex_unlock(&disks_mutex); if (!error && mddev->kobj.sd) { @@ -5158,7 +5159,7 @@ static int add_new_disk(mddev_t * mddev, mdu_disk_info_t *info) PTR_ERR(rdev)); return PTR_ERR(rdev); } - /* set save_raid_disk if appropriate */ + /* set saved_raid_disk if appropriate */ if (!mddev->persistent) { if (info->state & (1<<MD_DISK_SYNC) && info->raid_disk < mddev->raid_disks) @@ -5168,7 +5169,10 @@ static int add_new_disk(mddev_t * mddev, mdu_disk_info_t *info) } else super_types[mddev->major_version]. validate_super(mddev, rdev); - rdev->saved_raid_disk = rdev->raid_disk; + if (test_bit(In_sync, &rdev->flags)) + rdev->saved_raid_disk = rdev->raid_disk; + else + rdev->saved_raid_disk = -1; clear_bit(In_sync, &rdev->flags); /* just to be sure */ if (info->state & (1<<MD_DISK_WRITEMOSTLY)) @@ -6040,9 +6044,8 @@ static int md_thread(void * arg) || kthread_should_stop(), thread->timeout); - clear_bit(THREAD_WAKEUP, &thread->flags); - - thread->run(thread->mddev); + if (test_and_clear_bit(THREAD_WAKEUP, &thread->flags)) + thread->run(thread->mddev); } return 0; diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c index 45f8324..845cf95 100644 --- a/drivers/md/raid1.c +++ b/drivers/md/raid1.c @@ -1161,6 +1161,7 @@ static int raid1_remove_disk(mddev_t *mddev, int number) * is not possible. */ if (!test_bit(Faulty, &rdev->flags) && + !mddev->recovery_disabled && mddev->degraded < conf->raid_disks) { err = -EBUSY; goto abort; diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c index c67aa54..0641674 100644 --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -2397,13 +2397,13 @@ static int run(mddev_t *mddev) return 0; out_free_conf: + md_unregister_thread(mddev->thread); if (conf->r10bio_pool) mempool_destroy(conf->r10bio_pool); safe_put_page(conf->tmppage); kfree(conf->mirrors); kfree(conf); mddev->private = NULL; - md_unregister_thread(mddev->thread); out: return -EIO; } |