diff options
| author | Bryn Reeves <breeves@redhat.com> | 2006-10-03 12:15:43 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-10-03 19:04:16 +0400 |
| commit | 999d816851c3e080412a19558f111d01852d2f04 (patch) | |
| tree | 8b75a8e97d6fa7c41e81169e9b2ba5f7806e23a9 | |
| parent | 3cb4021453a69585e458ec2177677c0c1300dccf (diff) | |
| download | linux-999d816851c3e080412a19558f111d01852d2f04.tar.xz | |
[PATCH] dm table: add target flush
This patch adds support for a per-target dm_flush_fn method. This is needed
to allow dm-loop to invalidate page cache mappings in response to BLKFLSBUF
ioctl commands.
Signed-off-by: Bryn Reeves <breeves@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| -rw-r--r-- | drivers/md/dm-table.c | 5 | ||||
| -rw-r--r-- | include/linux/device-mapper.h | 2 | ||||
| -rw-r--r-- | include/linux/dm-ioctl.h | 2 |
3 files changed, 8 insertions, 1 deletions
diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c index 4920998efeeb..05befa91807a 100644 --- a/drivers/md/dm-table.c +++ b/drivers/md/dm-table.c @@ -1001,6 +1001,11 @@ int dm_table_flush_all(struct dm_table *t) { struct list_head *d, *devices = dm_table_get_devices(t); int ret = 0; + unsigned i; + + for (i = 0; i < t->num_targets; i++) + if (t->targets[i].type->flush) + t->targets[i].type->flush(&t->targets[i]); for (d = devices->next; d != devices; d = d->next) { struct dm_dev *dd = list_entry(d, struct dm_dev, list); diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h index 7a48d428d0a1..03ef41c1eaac 100644 --- a/include/linux/device-mapper.h +++ b/include/linux/device-mapper.h @@ -55,6 +55,7 @@ typedef int (*dm_endio_fn) (struct dm_target *ti, struct bio *bio, int error, union map_info *map_context); +typedef void (*dm_flush_fn) (struct dm_target *ti); typedef void (*dm_presuspend_fn) (struct dm_target *ti); typedef void (*dm_postsuspend_fn) (struct dm_target *ti); typedef int (*dm_preresume_fn) (struct dm_target *ti); @@ -96,6 +97,7 @@ struct target_type { dm_dtr_fn dtr; dm_map_fn map; dm_endio_fn end_io; + dm_flush_fn flush; dm_presuspend_fn presuspend; dm_postsuspend_fn postsuspend; dm_preresume_fn preresume; diff --git a/include/linux/dm-ioctl.h b/include/linux/dm-ioctl.h index f28b5c87aa6b..8853fc4d1c5e 100644 --- a/include/linux/dm-ioctl.h +++ b/include/linux/dm-ioctl.h @@ -285,7 +285,7 @@ typedef char ioctl_struct[308]; #define DM_DEV_SET_GEOMETRY _IOWR(DM_IOCTL, DM_DEV_SET_GEOMETRY_CMD, struct dm_ioctl) #define DM_VERSION_MAJOR 4 -#define DM_VERSION_MINOR 9 +#define DM_VERSION_MINOR 10 #define DM_VERSION_PATCHLEVEL 0 #define DM_VERSION_EXTRA "-ioctl (2006-09-14)" |