dm snapshot: remove dm_snap header use

Move useful functions out of dm-snap.h and stop using dm-snap.h.

Signed-off-by: Jonathan Brassow <jbrassow@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>

1 files changed, 9 insertions, 9 deletions

diff --git a/drivers/md/dm-snap.c b/drivers/md/dm-snap.c
index 5c067efc665f..467c586e2439 100644
--- a/drivers/md/dm-snap.c
+++ b/drivers/md/dm-snap.c
@@ -637,8 +637,6 @@ static int snapshot_ctr(struct dm_target *ti, unsigned int argc, char **argv)
                 goto bad4;
         }
 
-        s->store->snap = s;
-
         r = dm_kcopyd_client_create(SNAPSHOT_PAGES, &s->kcopyd_client);
         if (r) {
                 ti->error = "Could not create kcopyd client";
@@ -962,11 +960,11 @@ static void start_copy(struct dm_snap_pending_exception *pe)
         dev_size = get_dev_size(bdev);
 
         src.bdev = bdev;
-        src.sector = chunk_to_sector(s, pe->e.old_chunk);
+        src.sector = chunk_to_sector(s->store, pe->e.old_chunk);
         src.count = min(s->store->chunk_size, dev_size - src.sector);
 
         dest.bdev = s->store->cow->bdev;
-        dest.sector = chunk_to_sector(s, pe->e.new_chunk);
+        dest.sector = chunk_to_sector(s->store, pe->e.new_chunk);
         dest.count = src.count;
 
         /* Hand over to kcopyd */
@@ -1027,9 +1025,11 @@ static void remap_exception(struct dm_snapshot *s, struct dm_snap_exception *e,
                             struct bio *bio, chunk_t chunk)
 {
         bio->bi_bdev = s->store->cow->bdev;
-        bio->bi_sector = chunk_to_sector(s, dm_chunk_number(e->new_chunk) +
-                         (chunk - e->old_chunk)) +
-                         (bio->bi_sector & s->store->chunk_mask);
+        bio->bi_sector = chunk_to_sector(s->store,
+                                         dm_chunk_number(e->new_chunk) +
+                                         (chunk - e->old_chunk)) +
+                                         (bio->bi_sector &
+                                          s->store->chunk_mask);
 }
 
 static int snapshot_map(struct dm_target *ti, struct bio *bio,
@@ -1041,7 +1041,7 @@ static int snapshot_map(struct dm_target *ti, struct bio *bio,
         chunk_t chunk;
         struct dm_snap_pending_exception *pe = NULL;
 
-        chunk = sector_to_chunk(s, bio->bi_sector);
+        chunk = sector_to_chunk(s->store, bio->bi_sector);
 
         /* Full snapshots are not usable */
         /* To get here the table must be live so s->active is always set. */
@@ -1210,7 +1210,7 @@ static int __origin_write(struct list_head *snapshots, struct bio *bio)
                  * Remember, different snapshots can have
                  * different chunk sizes.
                  */
-                chunk = sector_to_chunk(snap, bio->bi_sector);
+                chunk = sector_to_chunk(snap->store, bio->bi_sector);
 
                 /*
                  * Check exception table to see if block