vfs: plumb remap flags through the vfs dedupe functions

Plumb a remap_flags argument through the vfs_dedupe_file_range_one
functions so that dedupe can take advantage of it.

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>

diff --git a/include/linux/fs.h b/include/linux/fs.h
index 1c5e55d..544ab50 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1859,7 +1859,7 @@ extern int vfs_dedupe_file_range(struct file *file,
 				 struct file_dedupe_range *same);
 extern loff_t vfs_dedupe_file_range_one(struct file *src_file, loff_t src_pos,
 					struct file *dst_file, loff_t dst_pos,
-					loff_t len);
+					loff_t len, unsigned int remap_flags);
 
 
 struct super_operations {