[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>
This commit is contained in:
parent
3cb4021453
commit
999d816851
3 changed files with 8 additions and 1 deletions
|
@ -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);
|
||||
|
|
|
@ -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;
|
||||
|
|
|
@ -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)"
|
||||
|
||||
|
|
Loading…
Reference in a new issue