lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

dm target:s introduce iterate devices fn

Browse Source 
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
This commit is contained in:
Mike Snitzer
2009-06-22 10:12:33 +01:00
committed by Alasdair G Kergon
parent 1197764e40
commit af4874e03e
7 changed files with 105 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
drivers/md/dm-linear.c
View File

@@ -134,9 +134,17 @@ static int linear_merge(struct dm_target *ti, struct bvec_merge_data *bvm,
return min(max_size, q->merge_bvec_fn(q, bvm, biovec));
}
static int linear_iterate_devices(struct dm_target *ti,
iterate_devices_callout_fn fn, void *data)
{
struct linear_c *lc = ti->private;
return fn(ti, lc->dev, lc->start, data);
}
static struct target_type linear_target = {
.name = "linear",
.version= {1, 0, 3},
.version = {1, 1, 0},
.module = THIS_MODULE,
.ctr = linear_ctr,
.dtr = linear_dtr,
@@ -144,6 +152,7 @@ static struct target_type linear_target = {
.status = linear_status,
.ioctl = linear_ioctl,
.merge = linear_merge,
.iterate_devices = linear_iterate_devices,
};
int __init dm_linear_init(void)