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Commit 3752d22f authored by Anand Jain's avatar Anand Jain Committed by David Sterba
Browse files

btrfs: cow_file_range() num_bytes and disk_num_bytes are same 



This patch deletes local variable disk_num_bytes as its value
is same as num_bytes in the function cow_file_range().

Signed-off-by: default avatarAnand Jain <anand.jain@oracle.com>
Reviewed-by: default avatarNikolay Borisov <nborisov@suse.com>
Reviewed-by: default avatarDavid Sterba <dsterba@suse.com>
Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent 2afb9653

fs/btrfs/inode.c

+6 −10
Original line number Diff line number Diff line
@@ -961,7 +961,6 @@ static noinline int cow_file_range(struct inode *inode, 
	u64 alloc_hint = 0;

	u64 num_bytes;

	unsigned long ram_size;

	u64 disk_num_bytes;

	u64 cur_alloc_size = 0;

	u64 blocksize = fs_info->sectorsize;

	struct btrfs_key ins;
@@ -979,7 +978,6 @@ static noinline int cow_file_range(struct inode *inode, 


	num_bytes = ALIGN(end - start + 1, blocksize);

	num_bytes = max(blocksize,  num_bytes);

	disk_num_bytes = num_bytes;



	inode_should_defrag(BTRFS_I(inode), start, end, num_bytes, SZ_64K);
@@ -1010,15 +1008,14 @@ static noinline int cow_file_range(struct inode *inode, 
		}

	}



	BUG_ON(disk_num_bytes >

	       btrfs_super_total_bytes(fs_info->super_copy));

	BUG_ON(num_bytes > btrfs_super_total_bytes(fs_info->super_copy));



	alloc_hint = get_extent_allocation_hint(inode, start, num_bytes);

	btrfs_drop_extent_cache(BTRFS_I(inode), start,

			start + num_bytes - 1, 0);



	while (disk_num_bytes > 0) {

		cur_alloc_size = disk_num_bytes;

	while (num_bytes > 0) {

		cur_alloc_size = num_bytes;

		ret = btrfs_reserve_extent(root, cur_alloc_size, cur_alloc_size,

					   fs_info->sectorsize, 0, alloc_hint,

					   &ins, 1, 1);
@@ -1082,10 +1079,9 @@ static noinline int cow_file_range(struct inode *inode, 
					     delalloc_end, locked_page,

					     EXTENT_LOCKED | EXTENT_DELALLOC,

					     page_ops);

		if (disk_num_bytes < cur_alloc_size)

			disk_num_bytes = 0;

		if (num_bytes < cur_alloc_size)

			num_bytes = 0;

		else

			disk_num_bytes -= cur_alloc_size;

			num_bytes -= cur_alloc_size;

		alloc_hint = ins.objectid + ins.offset;

		start += cur_alloc_size;