vfs: hoist the btrfs deduplication ioctl to the vfs
Hoist the btrfs EXTENT_SAME ioctl up to the VFS and make the name
more systematic (FIDEDUPERANGE).
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 5d987ae..d71814b 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1633,6 +1633,8 @@
loff_t, size_t, unsigned int);
int (*clone_file_range)(struct file *, loff_t, struct file *, loff_t,
u64);
+ ssize_t (*dedupe_file_range)(struct file *, u64, u64, struct file *,
+ u64);
};
struct inode_operations {
@@ -1688,6 +1690,8 @@
loff_t, size_t, unsigned int);
extern int vfs_clone_file_range(struct file *file_in, loff_t pos_in,
struct file *file_out, loff_t pos_out, u64 len);
+extern int vfs_dedupe_file_range(struct file *file,
+ struct file_dedupe_range *same);
struct super_operations {
struct inode *(*alloc_inode)(struct super_block *sb);