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| 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-crypt.c | |
| parent | 1197764e403d97231eb6da2b1e16f511a7fd3101 (diff) | |
| download | lwn-af4874e03ed82f050d5872d8c39ce64bf16b5c38.tar.gz lwn-af4874e03ed82f050d5872d8c39ce64bf16b5c38.zip | |
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-crypt.c')
| -rw-r--r-- | drivers/md/dm-crypt.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c index 04db6c4004a8..9933eb861c71 100644 --- a/drivers/md/dm-crypt.c +++ b/drivers/md/dm-crypt.c @@ -1313,9 +1313,17 @@ static int crypt_merge(struct dm_target *ti, struct bvec_merge_data *bvm, return min(max_size, q->merge_bvec_fn(q, bvm, biovec)); } +static int crypt_iterate_devices(struct dm_target *ti, + iterate_devices_callout_fn fn, void *data) +{ + struct crypt_config *cc = ti->private; + + return fn(ti, cc->dev, cc->start, data); +} + static struct target_type crypt_target = { .name = "crypt", - .version= {1, 6, 0}, + .version = {1, 7, 0}, .module = THIS_MODULE, .ctr = crypt_ctr, .dtr = crypt_dtr, @@ -1326,6 +1334,7 @@ static struct target_type crypt_target = { .resume = crypt_resume, .message = crypt_message, .merge = crypt_merge, + .iterate_devices = crypt_iterate_devices, }; static int __init dm_crypt_init(void) |