diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/md/md.c | 4 | ||||
| -rw-r--r-- | drivers/md/md.h | 1 |
2 files changed, 5 insertions, 0 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c index 8ff690ac6247..1b3316c79b7b 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -528,11 +528,15 @@ void mddev_suspend(struct mddev *mddev) wait_event(mddev->sb_wait, !test_bit(MD_UPDATING_SB, &mddev->flags)); del_timer_sync(&mddev->safemode_timer); + /* restrict memory reclaim I/O during raid array is suspend */ + mddev->noio_flag = memalloc_noio_save(); } EXPORT_SYMBOL_GPL(mddev_suspend); void mddev_resume(struct mddev *mddev) { + /* entred the memalloc scope from mddev_suspend() */ + memalloc_noio_restore(mddev->noio_flag); lockdep_assert_held(&mddev->reconfig_mutex); if (--mddev->suspended) return; diff --git a/drivers/md/md.h b/drivers/md/md.h index acd681939112..612814d07d35 100644 --- a/drivers/md/md.h +++ b/drivers/md/md.h @@ -497,6 +497,7 @@ struct mddev { void (*sync_super)(struct mddev *mddev, struct md_rdev *rdev); struct md_cluster_info *cluster_info; unsigned int good_device_nr; /* good device num within cluster raid */ + unsigned int noio_flag; /* for memalloc scope API */ bool has_superblocks:1; bool fail_last_dev:1; |