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dm exception store: split set_chunk_size

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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>
This commit is contained in:
Mikulas Patocka
2009-09-04 20:40:41 +01:00
committed by Alasdair G Kergon
parent 61578dcd3f
commit 2defcc3fb4
2 changed files with 12 additions and 0 deletions
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8
drivers/md/dm-exception-store.c
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@@ -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";