1 files changed, 23 insertions, 20 deletions

diff --git a/drivers/md/dm-raid1.c b/drivers/md/dm-raid1.c
index 6cfa8d435d55..d12cf3e5e076 100644
--- a/drivers/md/dm-raid1.c
+++ b/drivers/md/dm-raid1.c
@@ -122,16 +122,6 @@ static inline sector_t region_to_sector(struct region_hash *rh, region_t region)
 /* FIXME move this */
 static void queue_bio(struct mirror_set *ms, struct bio *bio, int rw);
 
-static void *region_alloc(gfp_t gfp_mask, void *pool_data)
-{
-	return kmalloc(sizeof(struct region), gfp_mask);
-}
-
-static void region_free(void *element, void *pool_data)
-{
-	kfree(element);
-}
-
 #define MIN_REGIONS 64
 #define MAX_RECOVERY 1
 static int rh_init(struct region_hash *rh, struct mirror_set *ms,
@@ -173,8 +163,8 @@ static int rh_init(struct region_hash *rh, struct mirror_set *ms,
 	INIT_LIST_HEAD(&rh->quiesced_regions);
 	INIT_LIST_HEAD(&rh->recovered_regions);
 
-	rh->region_pool = mempool_create(MIN_REGIONS, region_alloc,
-					 region_free, NULL);
+	rh->region_pool = mempool_create_kmalloc_pool(MIN_REGIONS,
+						      sizeof(struct region));
 	if (!rh->region_pool) {
 		vfree(rh->buckets);
 		rh->buckets = NULL;
@@ -412,9 +402,21 @@ static void rh_dec(struct region_hash *rh, region_t region)
 
 	spin_lock_irqsave(&rh->region_lock, flags);
 	if (atomic_dec_and_test(&reg->pending)) {
+		/*
+		 * There is no pending I/O for this region.
+		 * We can move the region to corresponding list for next action.
+		 * At this point, the region is not yet connected to any list.
+		 *
+		 * If the state is RH_NOSYNC, the region should be kept off
+		 * from clean list.
+		 * The hash entry for RH_NOSYNC will remain in memory
+		 * until the region is recovered or the map is reloaded.
+		 */
+
+		/* do nothing for RH_NOSYNC */
 		if (reg->state == RH_RECOVERING) {
 			list_add_tail(&reg->list, &rh->quiesced_regions);
-		} else {
+		} else if (reg->state == RH_DIRTY) {
 			reg->state = RH_CLEAN;
 			list_add(&reg->list, &rh->clean_regions);
 		}
@@ -932,9 +934,9 @@ static inline int _check_region_size(struct dm_target *ti, uint32_t size)
 static int get_mirror(struct mirror_set *ms, struct dm_target *ti,
 		      unsigned int mirror, char **argv)
 {
-	sector_t offset;
+	unsigned long long offset;
 
-	if (sscanf(argv[1], SECTOR_FORMAT, &offset) != 1) {
+	if (sscanf(argv[1], "%llu", &offset) != 1) {
 		ti->error = "dm-mirror: Invalid offset";
 		return -EINVAL;
 	}
@@ -1201,16 +1203,17 @@ static int mirror_status(struct dm_target *ti, status_type_t type,
 		for (m = 0; m < ms->nr_mirrors; m++)
 			DMEMIT("%s ", ms->mirror[m].dev->name);
 
-		DMEMIT(SECTOR_FORMAT "/" SECTOR_FORMAT,
-		       ms->rh.log->type->get_sync_count(ms->rh.log),
-		       ms->nr_regions);
+		DMEMIT("%llu/%llu",
+			(unsigned long long)ms->rh.log->type->
+				get_sync_count(ms->rh.log),
+			(unsigned long long)ms->nr_regions);
 		break;
 
 	case STATUSTYPE_TABLE:
 		DMEMIT("%d ", ms->nr_mirrors);
 		for (m = 0; m < ms->nr_mirrors; m++)
-			DMEMIT("%s " SECTOR_FORMAT " ",
-			       ms->mirror[m].dev->name, ms->mirror[m].offset);
+			DMEMIT("%s %llu ", ms->mirror[m].dev->name,
+				(unsigned long long)ms->mirror[m].offset);
 	}
 
 	return 0;