Commit 72727bad authored by Mikulas Patocka's avatar Mikulas Patocka Committed by Alasdair G Kergon
Browse files

dm snapshot: store pointer to target instance 



Save pointer to dm_target in dm_snapshot structure.

Signed-off-by: default avatarMikulas Patocka <mpatocka@redhat.com>
Signed-off-by: default avatarAlasdair G Kergon <agk@redhat.com>
parent 769aef30

drivers/md/dm-snap.c

+3 −3
Original line number Diff line number Diff line
@@ -536,7 +536,7 @@ static int snapshot_ctr(struct dm_target *ti, unsigned int argc, char **argv) 
	s->last_percent = 0;

	init_rwsem(&s->lock);

	spin_lock_init(&s->pe_lock);

	s->table = ti->table;

	s->ti = ti;



	/* Allocate hash table for COW data */

	if (init_hash_tables(s)) {
@@ -699,7 +699,7 @@ static void __invalidate_snapshot(struct dm_snapshot *s, int err) 


	s->valid = 0;



	dm_table_event(s->table);

	dm_table_event(s->ti->table);

}



static void get_pending_exception(struct dm_snap_pending_exception *pe)
@@ -1060,7 +1060,7 @@ static int __origin_write(struct list_head *snapshots, struct bio *bio) 
			goto next_snapshot;



		/* Nothing to do if writing beyond end of snapshot */

		if (bio->bi_sector >= dm_table_get_size(snap->table))

		if (bio->bi_sector >= dm_table_get_size(snap->ti->table))

			goto next_snapshot;



		/*

drivers/md/dm-snap.h

+1 −1
Original line number Diff line number Diff line
@@ -132,7 +132,7 @@ struct exception_store { 


struct dm_snapshot {

	struct rw_semaphore lock;

	struct dm_table *table;

	struct dm_target *ti;



	struct dm_dev *origin;

	struct dm_dev *cow;