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authorMikulas Patocka <mpatocka@redhat.com>2009-09-04 20:40:41 +0100
committerAlasdair G Kergon <agk@redhat.com>2009-09-04 20:40:41 +0100
commit2defcc3fb4661e7351cb2ac48d843efc4c64db13 (patch)
tree18be3f5f6c38f8b8b535f05e6004090cd9143af6
parent61578dcd3fafe6babd72e8db32110cc0b630a432 (diff)
downloadlinux-stericsson-2defcc3fb4661e7351cb2ac48d843efc4c64db13.tar.gz
dm exception store: split set_chunk_size
Break the function set_chunk_size to two functions in preparation for the fix in the following patch. Cc: stable@kernel.org Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
-rw-r--r--drivers/md/dm-exception-store.c8
-rw-r--r--drivers/md/dm-exception-store.h4
2 files changed, 12 insertions, 0 deletions
diff --git a/drivers/md/dm-exception-store.c b/drivers/md/dm-exception-store.c
index 3710ff88fc10..4c01c7535fb5 100644
--- a/drivers/md/dm-exception-store.c
+++ b/drivers/md/dm-exception-store.c
@@ -171,6 +171,14 @@ static int set_chunk_size(struct dm_exception_store *store,
*/
chunk_size_ulong = round_up(chunk_size_ulong, PAGE_SIZE >> 9);
+ return dm_exception_store_set_chunk_size(store, chunk_size_ulong,
+ error);
+}
+
+int dm_exception_store_set_chunk_size(struct dm_exception_store *store,
+ unsigned long chunk_size_ulong,
+ char **error)
+{
/* Check chunk_size is a power of 2 */
if (!is_power_of_2(chunk_size_ulong)) {
*error = "Chunk size is not a power of 2";
diff --git a/drivers/md/dm-exception-store.h b/drivers/md/dm-exception-store.h
index 2442c8c07898..812c71872ba0 100644
--- a/drivers/md/dm-exception-store.h
+++ b/drivers/md/dm-exception-store.h
@@ -168,6 +168,10 @@ static inline chunk_t sector_to_chunk(struct dm_exception_store *store,
int dm_exception_store_type_register(struct dm_exception_store_type *type);
int dm_exception_store_type_unregister(struct dm_exception_store_type *type);
+int dm_exception_store_set_chunk_size(struct dm_exception_store *store,
+ unsigned long chunk_size_ulong,
+ char **error);
+
int dm_exception_store_create(struct dm_target *ti, int argc, char **argv,
unsigned *args_used,
struct dm_exception_store **store);