diff options
| author | Jonathan Brassow <jbrassow@redhat.com> | 2009-01-06 03:05:19 +0000 |
|---|---|---|
| committer | Alasdair G Kergon <agk@redhat.com> | 2009-01-06 03:05:19 +0000 |
| commit | a159c1ac5f33c6cf0f5aa3c9d1ccdc82c907ee46 (patch) | |
| tree | 2cb6bfd3f376e2366f3e3820ebd07a0a86a01cfc /drivers/md/dm-snap-transient.c | |
| parent | 4db6bfe02bdc7dc5048f46dd682a94801d029adc (diff) | |
| download | lwn-a159c1ac5f33c6cf0f5aa3c9d1ccdc82c907ee46.tar.gz lwn-a159c1ac5f33c6cf0f5aa3c9d1ccdc82c907ee46.zip | |
dm snapshot: extend exception store functions
Supply dm_add_exception as a callback to the read_metadata function.
Add a status function ready for a later patch and name the functions
consistently.
Signed-off-by: Jonathan Brassow <jbrassow@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Diffstat (limited to 'drivers/md/dm-snap-transient.c')
| -rw-r--r-- | drivers/md/dm-snap-transient.c | 21 |
1 files changed, 12 insertions, 9 deletions
diff --git a/drivers/md/dm-snap-transient.c b/drivers/md/dm-snap-transient.c index 2a781df57fef..7f6e2e6dcb0d 100644 --- a/drivers/md/dm-snap-transient.c +++ b/drivers/md/dm-snap-transient.c @@ -28,13 +28,16 @@ static void transient_destroy(struct dm_exception_store *store) kfree(store->context); } -static int transient_read_metadata(struct dm_exception_store *store) +static int transient_read_metadata(struct dm_exception_store *store, + int (*callback)(void *callback_context, + chunk_t old, chunk_t new), + void *callback_context) { return 0; } -static int transient_prepare(struct dm_exception_store *store, - struct dm_snap_exception *e) +static int transient_prepare_exception(struct dm_exception_store *store, + struct dm_snap_exception *e) { struct transient_c *tc = (struct transient_c *) store->context; sector_t size = get_dev_size(store->snap->cow->bdev); @@ -48,10 +51,10 @@ static int transient_prepare(struct dm_exception_store *store, return 0; } -static void transient_commit(struct dm_exception_store *store, - struct dm_snap_exception *e, - void (*callback) (void *, int success), - void *callback_context) +static void transient_commit_exception(struct dm_exception_store *store, + struct dm_snap_exception *e, + void (*callback) (void *, int success), + void *callback_context) { /* Just succeed */ callback(callback_context, 1); @@ -70,8 +73,8 @@ int dm_create_transient(struct dm_exception_store *store) store->destroy = transient_destroy; store->read_metadata = transient_read_metadata; - store->prepare_exception = transient_prepare; - store->commit_exception = transient_commit; + store->prepare_exception = transient_prepare_exception; + store->commit_exception = transient_commit_exception; store->drop_snapshot = NULL; store->fraction_full = transient_fraction_full; |