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dm exception store: move cow pointer

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Move COW device from snapshot to exception store.

Signed-off-by: Jonathan Brassow <jbrassow@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
This commit is contained in:
Jonathan Brassow
2009-04-02 19:55:33 +01:00
committed by Alasdair G Kergon
parent d021684951
commit 49beb2b87a
6 changed files with 30 additions and 23 deletions
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4
drivers/md/dm-exception-store.h
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@@ -99,6 +99,8 @@ struct dm_exception_store {
struct dm_snapshot *snap;
struct dm_dev *cow;
/* Size of data blocks saved - must be a power of 2 */
chunk_t chunk_size;
chunk_t chunk_mask;
@@ -155,7 +157,7 @@ int dm_exception_store_type_unregister(struct dm_exception_store_type *type);
int dm_exception_store_create(const char *type_name, struct dm_target *ti,
chunk_t chunk_size, chunk_t chunk_mask,
chunk_t chunk_shift,
chunk_t chunk_shift, struct dm_dev *cow,
struct dm_exception_store **store);
void dm_exception_store_destroy(struct dm_exception_store *store);