@@ -3725,8 +3725,11 @@ int ext4_fiemap(struct inode *inode, str
if (fieinfo->fi_flags & FIEMAP_FLAG_XATTR) {
error = ext4_xattr_fiemap(inode, fieinfo);
} else {
+ ext4_lblk_t last_blk;
start_blk = start >> inode->i_sb->s_blocksize_bits;
- len_blks = len >> inode->i_sb->s_blocksize_bits;
+ /* the last byte in the range is (start + len - 1) */
+ last_blk = (start + len - 1) >> inode->i_sb->s_blocksize_bits;
+ len_blks = last_blk - start_blk + 1;
/*
* Walk the extent tree gathering extent information.