btrfs: open code btrfs_map_sblock

btrfs_map_sblock just hard codes three arguments and calls
btrfs_map_sblock.  Remove it as it doesn't provide any real value, but
makes following the btrfs_map_block call chains harder.
Reviewed-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

fs/btrfs/scrub.c

@@ -888,8 +888,9 @@ static void scrub_stripe_report_errors(struct scrub_ctx *sctx,
 
 		/* For scrub, our mirror_num should always start at 1. */
 		ASSERT(stripe->mirror_num >= 1);
-		ret = btrfs_map_sblock(fs_info, BTRFS_MAP_GET_READ_MIRRORS,
-				       stripe->logical, &mapped_len, &bioc);
+		ret = btrfs_map_block(fs_info, BTRFS_MAP_GET_READ_MIRRORS,
+				      stripe->logical, &mapped_len, &bioc,
+				      NULL, NULL, 1);
 		/*
 		 * If we failed, dev will be NULL, and later detailed reports
 		 * will just be skipped.
@@ -1921,8 +1922,8 @@ static int scrub_raid56_parity_stripe(struct scrub_ctx *sctx,
 	bio->bi_end_io = raid56_scrub_wait_endio;
 
 	btrfs_bio_counter_inc_blocked(fs_info);
-	ret = btrfs_map_sblock(fs_info, BTRFS_MAP_WRITE, full_stripe_start,
-			       &length, &bioc);
+	ret = btrfs_map_block(fs_info, BTRFS_MAP_WRITE, full_stripe_start,
+			      &length, &bioc, NULL, NULL, 1);
 	if (ret < 0) {
 		btrfs_put_bioc(bioc);
 		btrfs_bio_counter_dec(fs_info);

fs/btrfs/volumes.c

@@ -6481,15 +6481,6 @@ int btrfs_map_block(struct btrfs_fs_info *fs_info, enum btrfs_map_op op,
 	return ret;
 }
 
-/* For Scrub/replace */
-int btrfs_map_sblock(struct btrfs_fs_info *fs_info, enum btrfs_map_op op,
-		     u64 logical, u64 *length,
-		     struct btrfs_io_context **bioc_ret)
-{
-	return btrfs_map_block(fs_info, op, logical, length, bioc_ret,
-				 NULL, NULL, 1);
-}
-
 static bool dev_args_match_fs_devices(const struct btrfs_dev_lookup_args *args,
 				      const struct btrfs_fs_devices *fs_devices)
 {

fs/btrfs/volumes.h

@@ -582,9 +582,6 @@ static inline unsigned long btrfs_chunk_item_size(int num_stripes)
 
 void btrfs_get_bioc(struct btrfs_io_context *bioc);
 void btrfs_put_bioc(struct btrfs_io_context *bioc);
-int btrfs_map_sblock(struct btrfs_fs_info *fs_info, enum btrfs_map_op op,
-		     u64 logical, u64 *length,
-		     struct btrfs_io_context **bioc_ret);
 int btrfs_map_block(struct btrfs_fs_info *fs_info, enum btrfs_map_op op,
 		    u64 logical, u64 *length,
 		    struct btrfs_io_context **bioc_ret,

fs/btrfs/zoned.c

@@ -1799,8 +1799,8 @@ static int read_zone_info(struct btrfs_fs_info *fs_info, u64 logical,
 	int nmirrors;
 	int i, ret;
 
-	ret = btrfs_map_sblock(fs_info, BTRFS_MAP_GET_READ_MIRRORS, logical,
-			       &mapped_length, &bioc);
+	ret = btrfs_map_block(fs_info, BTRFS_MAP_GET_READ_MIRRORS, logical,
+			      &mapped_length, &bioc, NULL, NULL, 1);
 	if (ret || !bioc || mapped_length < PAGE_SIZE) {
 		ret = -EIO;
 		goto out_put_bioc;