[PATCH 5/8] dm-raid456: add suspend/resume method
From: NeilBrown <hidden>
Date: 2010-07-26 03:24:35
Also in:
dm-devel
Subsystem:
device-mapper (lvm), the rest · Maintainers:
Alasdair Kergon, Mike Snitzer, Mikulas Patocka, Benjamin Marzinski, Linus Torvalds
These just call in to the md methods. Signed-off-by: NeilBrown <redacted> --- drivers/md/dm-raid456.c | 22 ++++++++++++++++++++++ 1 files changed, 22 insertions(+), 0 deletions(-)
diff --git a/drivers/md/dm-raid456.c b/drivers/md/dm-raid456.c
index 4ffd654..e2546fc 100644
--- a/drivers/md/dm-raid456.c
+++ b/drivers/md/dm-raid456.c@@ -466,6 +466,25 @@ static void raid_io_hints(struct dm_target *ti, (conf->raid_disks - conf->max_degraded)); } +static void raid_presuspend(struct dm_target *ti) +{ + struct raid_set *rs = ti->private; + md_stop_writes(&rs->md); +} + +static void raid_postsuspend(struct dm_target *ti) +{ + struct raid_set *rs = ti->private; + mddev_suspend(&rs->md); +} + +static void raid_resume(struct dm_target *ti) +{ + struct raid_set *rs = ti->private; + + mddev_resume(&rs->md); +} + static struct target_type raid_target = { .name = "raid45", .version = {1, 0, 0},
@@ -476,6 +495,9 @@ static struct target_type raid_target = { .status = raid_status, .iterate_devices = raid_iterate_devices, .io_hints = raid_io_hints, + .presuspend = raid_presuspend, + .postsuspend = raid_postsuspend, + .resume = raid_resume, }; static int __init dm_raid_init(void)