vfs: rename clone_verify_area to remap_verify_area

Since we use clone_verify_area for both clone and dedupe range checks,
rename the function to make it clear that it's for both.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>

fs/read_write.c

@@ -1686,7 +1686,7 @@ SYSCALL_DEFINE6(copy_file_range, int, fd_in, loff_t __user *, off_in,
 	return ret;
 }
 
-static int clone_verify_area(struct file *file, loff_t pos, u64 len, bool write)
+static int remap_verify_area(struct file *file, loff_t pos, u64 len, bool write)
 {
 	struct inode *inode = file_inode(file);
 
@@ -1852,11 +1852,11 @@ int do_clone_file_range(struct file *file_in, loff_t pos_in,
 	if (!file_in->f_op->clone_file_range)
 		return -EOPNOTSUPP;
 
-	ret = clone_verify_area(file_in, pos_in, len, false);
+	ret = remap_verify_area(file_in, pos_in, len, false);
 	if (ret)
 		return ret;
 
-	ret = clone_verify_area(file_out, pos_out, len, true);
+	ret = remap_verify_area(file_out, pos_out, len, true);
 	if (ret)
 		return ret;
 
@@ -1989,7 +1989,7 @@ int vfs_dedupe_file_range_one(struct file *src_file, loff_t src_pos,
 	if (ret)
 		return ret;
 
-	ret = clone_verify_area(dst_file, dst_pos, len, true);
+	ret = remap_verify_area(dst_file, dst_pos, len, true);
 	if (ret < 0)
 		goto out_drop_write;
 
@@ -2051,7 +2051,7 @@ int vfs_dedupe_file_range(struct file *file, struct file_dedupe_range *same)
 	if (!S_ISREG(src->i_mode))
 		goto out;
 
-	ret = clone_verify_area(file, off, len, false);
+	ret = remap_verify_area(file, off, len, false);
 	if (ret < 0)
 		goto out;
 	ret = 0;