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 @@ static int btrfs_extent_same(struct inode *src, u64 loff, u64 olen,
 	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,

fs/ocfs2/file.c

@@ -2537,19 +2537,14 @@ static int ocfs2_file_clone_range(struct file *file_in,
 					 len, false);
 }
 
-static ssize_t ocfs2_file_dedupe_range(struct file *src_file,
-				       u64 loff,
-				       u64 len,
-				       struct file *dst_file,
-				       u64 dst_loff)
+static int ocfs2_file_dedupe_range(struct file *src_file,
+				   u64 loff,
+				   u64 len,
+				   struct file *dst_file,
+				   u64 dst_loff)
 {
-	int error;
-
-	error = ocfs2_reflink_remap_range(src_file, loff, dst_file, dst_loff,
+	return ocfs2_reflink_remap_range(src_file, loff, dst_file, dst_loff,
 					  len, true);
-	if (error)
-		return error;
-	return len;
 }
 
 const struct inode_operations ocfs2_file_iops = {

fs/read_write.c

@@ -1976,7 +1976,7 @@ int vfs_dedupe_file_range(struct file *file, struct file_dedupe_range *same)
 	u16 count = same->dest_count;
 	struct file *dst_file;
 	loff_t dst_off;
-	ssize_t deduped;
+	int deduped;
 
 	if (!(file->f_mode & FMODE_READ))
 		return -EINVAL;
@@ -2056,7 +2056,7 @@ int vfs_dedupe_file_range(struct file *file, struct file_dedupe_range *same)
 			else if (deduped < 0)
 				info->status = deduped;
 			else
-				info->bytes_deduped += deduped;
+				info->bytes_deduped += len;
 		}
 
 next_file:

fs/xfs/xfs_file.c

@@ -933,7 +933,7 @@ xfs_file_clone_range(
 				     len, false);
 }
 
-STATIC ssize_t
+STATIC int
 xfs_file_dedupe_range(
 	struct file	*src_file,
 	u64		loff,
@@ -941,23 +941,8 @@ xfs_file_dedupe_range(
 	struct file	*dst_file,
 	u64		dst_loff)
 {
-	struct inode	*srci = file_inode(src_file);
-	u64		max_dedupe;
-	int		error;
-
-	/*
-	 * Since we have to read all these pages in to compare them, cut
-	 * it off at MAX_RW_COUNT/2 rounded down to the nearest block.
-	 * That means we won't do more than MAX_RW_COUNT IO per request.
-	 */
-	max_dedupe = (MAX_RW_COUNT >> 1) & ~(i_blocksize(srci) - 1);
-	if (len > max_dedupe)
-		len = max_dedupe;
-	error = xfs_reflink_remap_range(src_file, loff, dst_file, dst_loff,
+	return xfs_reflink_remap_range(src_file, loff, dst_file, dst_loff,
 				     len, true);
-	if (error)
-		return error;
-	return len;
 }
 
 STATIC int

include/linux/fs.h

@@ -1749,7 +1749,7 @@ struct file_operations {
 			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 *,
+	int (*dedupe_file_range)(struct file *, u64, u64, struct file *,
 			u64);
 } __randomize_layout;