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| author | Mikulas Patocka <mpatocka@redhat.com> | 2009-09-04 21:40:41 +0200 |
|---|---|---|
| committer | Alasdair G Kergon <agk@redhat.com> | 2009-09-04 21:40:41 +0200 |
| commit | 2defcc3fb4661e7351cb2ac48d843efc4c64db13 (patch) | |
| tree | 18be3f5f6c38f8b8b535f05e6004090cd9143af6 /drivers | |
| parent | dm snapshot: fix header corruption race on invalidation (diff) | |
| download | linux-2defcc3fb4661e7351cb2ac48d843efc4c64db13.tar.xz linux-2defcc3fb4661e7351cb2ac48d843efc4c64db13.zip | |
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>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/md/dm-exception-store.c | 8 | ||||
| -rw-r--r-- | drivers/md/dm-exception-store.h | 4 |
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); |