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Commit 1ae25f9c authored by Jonathan Brassow's avatar Jonathan Brassow Committed by Alasdair G Kergon
Browse files

dm snapshot: rename struct exception_store 



Rename struct exception_store to dm_exception_store.

Signed-off-by: default avatarJonathan Brassow <jbrassow@redhat.com>
Signed-off-by: default avatarAlasdair G Kergon <agk@redhat.com>
parent aea53d92

drivers/md/dm-exception-store.c

+14 −14
Original line number Diff line number Diff line
@@ -462,19 +462,19 @@ static int read_exceptions(struct pstore *ps) 
	return 0;

}



static struct pstore *get_info(struct exception_store *store)

static struct pstore *get_info(struct dm_exception_store *store)

{

	return (struct pstore *) store->context;

}



static void persistent_fraction_full(struct exception_store *store,

static void persistent_fraction_full(struct dm_exception_store *store,

				     sector_t *numerator, sector_t *denominator)

{

	*numerator = get_info(store)->next_free * store->snap->chunk_size;

	*denominator = get_dev_size(store->snap->cow->bdev);

}



static void persistent_destroy(struct exception_store *store)

static void persistent_destroy(struct dm_exception_store *store)

{

	struct pstore *ps = get_info(store);
@@ -485,7 +485,7 @@ static void persistent_destroy(struct exception_store *store) 
	kfree(ps);

}



static int persistent_read_metadata(struct exception_store *store)

static int persistent_read_metadata(struct dm_exception_store *store)

{

	int r, uninitialized_var(new_snapshot);

	struct pstore *ps = get_info(store);
@@ -551,7 +551,7 @@ static int persistent_read_metadata(struct exception_store *store) 
	return 0;

}



static int persistent_prepare(struct exception_store *store,

static int persistent_prepare(struct dm_exception_store *store,

			      struct dm_snap_exception *e)

{

	struct pstore *ps = get_info(store);
@@ -578,7 +578,7 @@ static int persistent_prepare(struct exception_store *store, 
	return 0;

}



static void persistent_commit(struct exception_store *store,

static void persistent_commit(struct dm_exception_store *store,

			      struct dm_snap_exception *e,

			      void (*callback) (void *, int success),

			      void *callback_context)
@@ -640,7 +640,7 @@ static void persistent_commit(struct exception_store *store, 
	ps->callback_count = 0;

}



static void persistent_drop(struct exception_store *store)

static void persistent_drop(struct dm_exception_store *store)

{

	struct pstore *ps = get_info(store);
@@ -649,7 +649,7 @@ static void persistent_drop(struct exception_store *store) 
		DMWARN("write header failed");

}



int dm_create_persistent(struct exception_store *store)

int dm_create_persistent(struct dm_exception_store *store)

{

	struct pstore *ps;
@@ -694,17 +694,17 @@ struct transient_c { 
	sector_t next_free;

};



static void transient_destroy(struct exception_store *store)

static void transient_destroy(struct dm_exception_store *store)

{

	kfree(store->context);

}



static int transient_read_metadata(struct exception_store *store)

static int transient_read_metadata(struct dm_exception_store *store)

{

	return 0;

}



static int transient_prepare(struct exception_store *store,

static int transient_prepare(struct dm_exception_store *store,

			     struct dm_snap_exception *e)

{

	struct transient_c *tc = (struct transient_c *) store->context;
@@ -719,7 +719,7 @@ static int transient_prepare(struct exception_store *store, 
	return 0;

}



static void transient_commit(struct exception_store *store,

static void transient_commit(struct dm_exception_store *store,

			     struct dm_snap_exception *e,

			     void (*callback) (void *, int success),

			     void *callback_context)
@@ -728,14 +728,14 @@ static void transient_commit(struct exception_store *store, 
	callback(callback_context, 1);

}



static void transient_fraction_full(struct exception_store *store,

static void transient_fraction_full(struct dm_exception_store *store,

				    sector_t *numerator, sector_t *denominator)

{

	*numerator = ((struct transient_c *) store->context)->next_free;

	*denominator = get_dev_size(store->snap->cow->bdev);

}



int dm_create_transient(struct exception_store *store)

int dm_create_transient(struct dm_exception_store *store)

{

	struct transient_c *tc;

drivers/md/dm-exception-store.h

+10 −9
Original line number Diff line number Diff line
@@ -36,28 +36,29 @@ struct dm_snap_exception { 
 * Abstraction to handle the meta/layout of exception stores (the

 * COW device).

 */

struct exception_store {

struct dm_exception_store {



	/*

	 * Destroys this object when you've finished with it.

	 */

	void (*destroy) (struct exception_store *store);

	void (*destroy) (struct dm_exception_store *store);



	/*

	 * The target shouldn't read the COW device until this is

	 * called.

	 */

	int (*read_metadata) (struct exception_store *store);

	int (*read_metadata) (struct dm_exception_store *store);



	/*

	 * Find somewhere to store the next exception.

	 */

	int (*prepare_exception) (struct exception_store *store,

	int (*prepare_exception) (struct dm_exception_store *store,

				  struct dm_snap_exception *e);



	/*

	 * Update the metadata with this exception.

	 */

	void (*commit_exception) (struct exception_store *store,

	void (*commit_exception) (struct dm_exception_store *store,

				  struct dm_snap_exception *e,

				  void (*callback) (void *, int success),

				  void *callback_context);
@@ -65,12 +66,12 @@ struct exception_store { 
	/*

	 * The snapshot is invalid, note this in the metadata.

	 */

	void (*drop_snapshot) (struct exception_store *store);

	void (*drop_snapshot) (struct dm_exception_store *store);



	/*

	 * Return how full the snapshot is.

	 */

	void (*fraction_full) (struct exception_store *store,

	void (*fraction_full) (struct dm_exception_store *store,

			       sector_t *numerator,

			       sector_t *denominator);
@@ -124,8 +125,8 @@ static inline void dm_consecutive_chunk_count_inc(struct dm_snap_exception *e) 
/*

 * Two exception store implementations.

 */

int dm_create_persistent(struct exception_store *store);

int dm_create_persistent(struct dm_exception_store *store);



int dm_create_transient(struct exception_store *store);

int dm_create_transient(struct dm_exception_store *store);



#endif /* _LINUX_DM_EXCEPTION_STORE */

drivers/md/dm-snap.h

+1 −1
Original line number Diff line number Diff line
@@ -61,7 +61,7 @@ struct dm_snapshot { 
	spinlock_t pe_lock;



	/* The on disk metadata handler */

	struct exception_store store;

	struct dm_exception_store store;



	struct dm_kcopyd_client *kcopyd_client;