btrfs-progs: Use named constants for common sizes

There multiple places where we use well-known sizes - 1,8,16,32 megabytes. We
also have them defined as constants in the sizes.h header. So let's use them.
No functional changes.

Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

convert/main.c

@@ -635,7 +635,7 @@ static int calculate_available_space(struct btrfs_convert_context *cctx)
 	 * Twice the minimal chunk size, to allow later wipe_reserved_ranges()
 	 * works without need to consider overlap
 	 */
-	u64 min_stripe_size = 2 * 16 * 1024 * 1024;
+	u64 min_stripe_size = SZ_32M;
 	int ret;
 
 	/* Calculate data_chunks */
@@ -800,7 +800,7 @@ static int create_image(struct btrfs_root *root,
 	 * Start from 1M, as 0~1M is reserved, and create_image_file_range()
 	 * can't handle bytenr 0(will consider it as a hole)
 	 */
-	cur = 1024 * 1024;
+	cur = SZ_1M;
 	while (cur < size) {
 		u64 len = size - cur;
 
@@ -1015,7 +1015,7 @@ static int make_convert_data_block_groups(struct btrfs_trans_handle *trans,
 	 * And for single chunk, don't create chunk larger than 1G.
 	 */
 	max_chunk_size = cfg->num_bytes / 10;
-	max_chunk_size = min((u64)(1024 * 1024 * 1024), max_chunk_size);
+	max_chunk_size = min((u64)(SZ_1G), max_chunk_size);
 	max_chunk_size = round_down(max_chunk_size,
 				    extent_root->fs_info->sectorsize);
 
@@ -1597,7 +1597,7 @@ next:
  * |   RSV 1   |  | Old  |   |    RSV 2  | | Old  | |   RSV 3   |
  * |   0~1M    |  | Fs   |   | SB2 + 64K | | Fs   | | SB3 + 64K |
  *
- * On the other hande, the converted fs image in btrfs is a completely 
+ * On the other hand, the converted fs image in btrfs is a completely
  * valid old fs.
  *
  * |<-----------------Converted fs image in btrfs-------------------->|

mkfs/common.c

@@ -95,7 +95,7 @@ int make_btrfs(int fd, struct btrfs_mkfs_config *cfg)
 
 	cfg->blocks[MKFS_SUPER_BLOCK] = BTRFS_SUPER_INFO_OFFSET;
 	for (i = 1; i < MKFS_BLOCK_COUNT; i++) {
-		cfg->blocks[i] = BTRFS_SUPER_INFO_OFFSET + 1024 * 1024 +
+		cfg->blocks[i] = BTRFS_SUPER_INFO_OFFSET + SZ_1M +
 			cfg->nodesize * i;
 	}
 

mkfs/main.c

@@ -719,7 +719,7 @@ again:
 	 * keep our extent size at 1MB max, this makes it easier to work inside
 	 * the tiny block groups created during mkfs
 	 */
-	cur_bytes = min(total_bytes, 1024ULL * 1024);
+	cur_bytes = min(total_bytes, (u64)SZ_1M);
 	ret = btrfs_reserve_extent(trans, root, cur_bytes, 0, 0, (u64)-1,
 				   &key, 1);
 	if (ret)
@@ -992,7 +992,7 @@ static int create_chunks(struct btrfs_trans_handle *trans,
 	u64 chunk_size;
 	u64 meta_type = BTRFS_BLOCK_GROUP_METADATA;
 	u64 data_type = BTRFS_BLOCK_GROUP_DATA;
-	u64 minimum_data_chunk_size = 8 * 1024 * 1024;
+	u64 minimum_data_chunk_size = SZ_8M;
 	u64 i;
 	int ret;
 
@@ -1095,9 +1095,9 @@ static u64 size_sourcedir(const char *dir_name, u64 sectorsize,
 	u64 dir_size = 0;
 	u64 total_size = 0;
 	int ret;
-	u64 default_chunk_size = 8 * 1024 * 1024;	/* 8MB */
-	u64 allocated_meta_size = 8 * 1024 * 1024;	/* 8MB */
-	u64 allocated_total_size = 20 * 1024 * 1024;	/* 20MB */
+	u64 default_chunk_size = SZ_8M;
+	u64 allocated_meta_size = SZ_8M;
+	u64 allocated_total_size = 20 * SZ_1M;	/* 20MB */
 	u64 num_of_meta_chunks = 0;
 	u64 num_of_data_chunks = 0;
 	u64 num_of_allocated_meta_chunks =