vfs: dedupe: return int

Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>

fs/btrfs/ctree.h

@@ -3247,8 +3247,8 @@ void btrfs_get_block_group_info(struct list_head *groups_list,
 				struct btrfs_ioctl_space_info *space);
 void btrfs_update_ioctl_balance_args(struct btrfs_fs_info *fs_info,
 			       struct btrfs_ioctl_balance_args *bargs);
-ssize_t btrfs_dedupe_file_range(struct file *src_file, u64 loff, u64 olen,
-			   struct file *dst_file, u64 dst_loff);
+int btrfs_dedupe_file_range(struct file *src_file, u64 loff, u64 olen,
+			    struct file *dst_file, u64 dst_loff);
 
 /* file.c */
 int __init btrfs_auto_defrag_init(void);

fs/btrfs/ioctl.c

@@ -3600,13 +3600,12 @@ out_free:
 	return ret;
 }
 
-ssize_t btrfs_dedupe_file_range(struct file *src_file, u64 loff, u64 olen,
-				struct file *dst_file, u64 dst_loff)
+int btrfs_dedupe_file_range(struct file *src_file, u64 loff, u64 olen,
+			    struct file *dst_file, u64 dst_loff)
 {
 	struct inode *src = file_inode(src_file);
 	struct inode *dst = file_inode(dst_file);
 	u64 bs = BTRFS_I(src)->root->fs_info->sb->s_blocksize;
-	ssize_t res;
 
 	if (WARN_ON_ONCE(bs < PAGE_SIZE)) {
 		/*
@@ -3617,10 +3616,7 @@ ssize_t btrfs_dedupe_file_range(struct file *src_file, u64 loff, u64 olen,
 		return -EINVAL;
 	}
 
-	res = btrfs_extent_same(src, loff, olen, dst, dst_loff);
-	if (res)
-		return res;
-	return olen;
+	return btrfs_extent_same(src, loff, olen, dst, dst_loff);
 }
 
 static int clone_finish_inode_update(struct btrfs_trans_handle *trans,