diff options
| author | Mike Snitzer <snitzer@redhat.com> | 2009-06-22 10:12:33 +0100 |
|---|---|---|
| committer | Alasdair G Kergon <agk@redhat.com> | 2009-06-22 10:12:33 +0100 |
| commit | af4874e03ed82f050d5872d8c39ce64bf16b5c38 (patch) | |
| tree | 38aa5dee43b4bb7a369995d4f38dee992cb051e0 /drivers/md/dm-raid1.c | |
| parent | 1197764e403d97231eb6da2b1e16f511a7fd3101 (diff) | |
dm target:s introduce iterate devices fn
Add .iterate_devices to 'struct target_type' to allow a function to be
called for all devices in a DM target. Implemented it for all targets
except those in dm-snap.c (origin and snapshot).
(The raid1 version number jumps to 1.12 because we originally reserved
1.1 to 1.11 for 'block_on_error' but ended up using 'handle_errors'
instead.)
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Cc: martin.petersen@oracle.com
Diffstat (limited to 'drivers/md/dm-raid1.c')
| -rw-r--r-- | drivers/md/dm-raid1.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/drivers/md/dm-raid1.c b/drivers/md/dm-raid1.c index 076fbb4e967..ce8868c768c 100644 --- a/drivers/md/dm-raid1.c +++ b/drivers/md/dm-raid1.c @@ -1283,9 +1283,23 @@ static int mirror_status(struct dm_target *ti, status_type_t type, return 0; } +static int mirror_iterate_devices(struct dm_target *ti, + iterate_devices_callout_fn fn, void *data) +{ + struct mirror_set *ms = ti->private; + int ret = 0; + unsigned i; + + for (i = 0; !ret && i < ms->nr_mirrors; i++) + ret = fn(ti, ms->mirror[i].dev, + ms->mirror[i].offset, data); + + return ret; +} + static struct target_type mirror_target = { .name = "mirror", - .version = {1, 0, 20}, + .version = {1, 12, 0}, .module = THIS_MODULE, .ctr = mirror_ctr, .dtr = mirror_dtr, @@ -1295,6 +1309,7 @@ static struct target_type mirror_target = { .postsuspend = mirror_postsuspend, .resume = mirror_resume, .status = mirror_status, + .iterate_devices = mirror_iterate_devices, }; static int __init dm_mirror_init(void) |