diff options
| author | Dan Williams <dan.j.williams@intel.com> | 2015-10-21 13:20:02 -0400 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2015-10-21 14:43:38 -0600 |
| commit | c7bfced9a6716ff66c9d61f934bb60af08d4688c (patch) | |
| tree | ca3febf875a4365478296b2993c635899fe1416b | |
| parent | 9609b9942b180a50b0162419abd2932a41117fe9 (diff) | |
| download | linux-c7bfced9a6716ff66c9d61f934bb60af08d4688c.tar.gz | |
md: suspend i/o during runtime blk_integrity_unregister
Synchronize pending i/o against a change in the integrity profile to
avoid the possibility of spurious integrity errors. Given linear_add()
is suspending the mddev before manipulating the mddev, do the same for
the other personalities.
Acked-by: NeilBrown <neilb@suse.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
| -rw-r--r-- | drivers/md/md.c | 1 | ||||
| -rw-r--r-- | drivers/md/multipath.c | 2 | ||||
| -rw-r--r-- | drivers/md/raid1.c | 2 | ||||
| -rw-r--r-- | drivers/md/raid10.c | 2 |
4 files changed, 7 insertions, 0 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c index 7d07caceb349..714aa92db174 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -1994,6 +1994,7 @@ void md_integrity_add_rdev(struct md_rdev *rdev, struct mddev *mddev) if (bi_rdev && blk_integrity_compare(mddev->gendisk, rdev->bdev->bd_disk) >= 0) return; + WARN_ON_ONCE(!mddev->suspended); printk(KERN_NOTICE "disabling data integrity on %s\n", mdname(mddev)); blk_integrity_unregister(mddev->gendisk); } diff --git a/drivers/md/multipath.c b/drivers/md/multipath.c index d132f06afdd1..7331a80d89f1 100644 --- a/drivers/md/multipath.c +++ b/drivers/md/multipath.c @@ -264,7 +264,9 @@ static int multipath_add_disk(struct mddev *mddev, struct md_rdev *rdev) spin_unlock_irq(&conf->device_lock); rcu_assign_pointer(p->rdev, rdev); err = 0; + mddev_suspend(mddev); md_integrity_add_rdev(rdev, mddev); + mddev_resume(mddev); break; } diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c index 049df6c4a8cc..a881b111fa35 100644 --- a/drivers/md/raid1.c +++ b/drivers/md/raid1.c @@ -1621,7 +1621,9 @@ static int raid1_add_disk(struct mddev *mddev, struct md_rdev *rdev) break; } } + mddev_suspend(mddev); md_integrity_add_rdev(rdev, mddev); + mddev_resume(mddev); if (mddev->queue && blk_queue_discard(bdev_get_queue(rdev->bdev))) queue_flag_set_unlocked(QUEUE_FLAG_DISCARD, mddev->queue); print_conf(conf); diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c index 7c99a4037715..6f0ec107996a 100644 --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -1736,7 +1736,9 @@ static int raid10_add_disk(struct mddev *mddev, struct md_rdev *rdev) rcu_assign_pointer(p->rdev, rdev); break; } + mddev_suspend(mddev); md_integrity_add_rdev(rdev, mddev); + mddev_resume(mddev); if (mddev->queue && blk_queue_discard(bdev_get_queue(rdev->bdev))) queue_flag_set_unlocked(QUEUE_FLAG_DISCARD, mddev->queue); |