diff options
| author | NeilBrown <neilb@suse.de> | 2011-01-13 20:00:02 +0000 |
|---|---|---|
| committer | Alasdair G Kergon <agk@redhat.com> | 2011-01-13 20:00:02 +0000 |
| commit | 99d03c141b40914b67d63c9d23b8da4386422ed7 (patch) | |
| tree | d9c2d4da01f749325fac949d96e35aedea05cfc4 | |
| parent | 9d357b0787bb3c91835d5e658c3bda178f9ca419 (diff) | |
dm: per target unplug callback support
Add per-target unplug callback support.
Cc: linux-raid@vger.kernel.org
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Jonathan Brassow <jbrassow@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
| -rw-r--r-- | drivers/md/dm-table.c | 5 | ||||
| -rw-r--r-- | include/linux/device-mapper.h | 1 |
2 files changed, 6 insertions, 0 deletions
diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c index 7e2ec3c0555..dffa0ac7c4f 100644 --- a/drivers/md/dm-table.c +++ b/drivers/md/dm-table.c @@ -1278,6 +1278,7 @@ void dm_table_unplug_all(struct dm_table *t) { struct dm_dev_internal *dd; struct list_head *devices = dm_table_get_devices(t); + struct dm_target_callbacks *cb; list_for_each_entry(dd, devices, list) { struct request_queue *q = bdev_get_queue(dd->dm_dev.bdev); @@ -1290,6 +1291,10 @@ void dm_table_unplug_all(struct dm_table *t) dm_device_name(t->md), bdevname(dd->dm_dev.bdev, b)); } + + list_for_each_entry(cb, &t->target_callbacks, list) + if (cb->unplug_fn) + cb->unplug_fn(cb); } struct mapped_device *dm_table_get_md(struct dm_table *t) diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h index 4b1c63d478a..272496d1fae 100644 --- a/include/linux/device-mapper.h +++ b/include/linux/device-mapper.h @@ -197,6 +197,7 @@ struct dm_target { struct dm_target_callbacks { struct list_head list; int (*congested_fn) (struct dm_target_callbacks *, int); + void (*unplug_fn)(struct dm_target_callbacks *); }; int dm_register_target(struct target_type *t); |