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Commit 2defcc3f authored Sep 04, 2009 by Mikulas Patocka Committed by Alasdair G Kergon Sep 04, 2009

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>

parent 61578dcd

drivers/md/dm-exception-store.c

+8 −0

Original line number	Original line	Diff line number	Diff line
	@@ -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);		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 */		/* Check chunk_size is a power of 2 */
	if (!is_power_of_2(chunk_size_ulong)) {		if (!is_power_of_2(chunk_size_ulong)) {
	*error = "Chunk size is not a power of 2";		*error = "Chunk size is not a power of 2";

drivers/md/dm-exception-store.h

+4 −0

Original line number	Original line	Diff line number	Diff line
	@@ -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_register(struct dm_exception_store_type *type);
	int dm_exception_store_type_unregister(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,		int dm_exception_store_create(struct dm_target ti, int argc, char *argv,
	unsigned *args_used,		unsigned *args_used,
	struct dm_exception_store **store);		struct dm_exception_store **store);