ext4: delete unused variables

This patch removed several unused variables.
Signed-off-by: Jon Ernst <jonernst07@gmx.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

fs/ext4/move_extent.c

@@ -912,7 +912,6 @@ move_extent_per_page(struct file *o_filp, struct inode *donor_inode,
 	struct page *pagep[2] = {NULL, NULL};
 	handle_t *handle;
 	ext4_lblk_t orig_blk_offset;
-	long long offs = orig_page_offset << PAGE_CACHE_SHIFT;
 	unsigned long blocksize = orig_inode->i_sb->s_blocksize;
 	unsigned int w_flags = 0;
 	unsigned int tmp_data_size, data_size, replaced_size;
@@ -940,8 +939,6 @@ move_extent_per_page(struct file *o_filp, struct inode *donor_inode,
 	orig_blk_offset = orig_page_offset * blocks_per_page +
 		data_offset_in_page;
 
-	offs = (long long)orig_blk_offset << orig_inode->i_blkbits;
-
 	/* Calculate data_size */
 	if ((orig_blk_offset + block_len_in_page - 1) ==
 	    ((orig_inode->i_size - 1) >> orig_inode->i_blkbits)) {

fs/ext4/resize.c

@@ -1556,11 +1556,10 @@ int ext4_group_add(struct super_block *sb, struct ext4_new_group_data *input)
 	int reserved_gdb = ext4_bg_has_super(sb, input->group) ?
 		le16_to_cpu(es->s_reserved_gdt_blocks) : 0;
 	struct inode *inode = NULL;
-	int gdb_off, gdb_num;
+	int gdb_off;
 	int err;
 	__u16 bg_flags = 0;
 
-	gdb_num = input->group / EXT4_DESC_PER_BLOCK(sb);
 	gdb_off = input->group % EXT4_DESC_PER_BLOCK(sb);
 
 	if (gdb_off == 0 && !EXT4_HAS_RO_COMPAT_FEATURE(sb,

fs/ext4/super.c

@@ -1924,7 +1924,6 @@ static int ext4_fill_flex_info(struct super_block *sb)
 	struct ext4_sb_info *sbi = EXT4_SB(sb);
 	struct ext4_group_desc *gdp = NULL;
 	ext4_group_t flex_group;
-	unsigned int groups_per_flex = 0;
 	int i, err;
 
 	sbi->s_log_groups_per_flex = sbi->s_es->s_log_groups_per_flex;
@@ -1932,7 +1931,6 @@ static int ext4_fill_flex_info(struct super_block *sb)
 		sbi->s_log_groups_per_flex = 0;
 		return 1;
 	}
-	groups_per_flex = 1U << sbi->s_log_groups_per_flex;
 
 	err = ext4_alloc_flex_bg_array(sb, sbi->s_groups_count);
 	if (err)