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authorMike Snitzer <snitzer@redhat.com>2009-06-22 13:12:33 +0400
committerAlasdair G Kergon <agk@redhat.com>2009-06-22 13:12:33 +0400
commitaf4874e03ed82f050d5872d8c39ce64bf16b5c38 (patch)
tree38aa5dee43b4bb7a369995d4f38dee992cb051e0 /drivers/md/dm-raid1.c
parent1197764e403d97231eb6da2b1e16f511a7fd3101 (diff)
downloadlinux-af4874e03ed82f050d5872d8c39ce64bf16b5c38.tar.xz
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.c17
1 files changed, 16 insertions, 1 deletions
diff --git a/drivers/md/dm-raid1.c b/drivers/md/dm-raid1.c
index 076fbb4e967a..ce8868c768cc 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)