Subject: linux-next: manual merge of the overlayfs tree with the btrfs-kdave tree

From: Stephen Rothwell <[email-masked]>
Date: Tue, 29 May 2018 09:52:50 +1000

Hi Miklos,

Today's linux-next merge of the overlayfs tree got a conflict in:

  fs/btrfs/ioctl.c

between commit:

  0b4dc087e29a ("Btrfs: dedupe_file_range ioctl: remove 16MiB restriction")

from the btrfs-kdave tree and commits:

  83d499febfac ("vfs: dedpue: return loff_t")
  7765f19ed5f9 ("vfs: dedupe: rationalize args")

from the overlayfs tree.

[I note the typo in the subject of commit 83d499febfac]

I fixed it up (see below) and can carry the fix as necessary. This
is now fixed as far as linux-next is concerned, but any non trivial
conflicts should be mentioned to your upstream maintainer when your tree
is submitted for merging.  You may also want to consider cooperating
with the maintainer of the conflicting tree to minimise any particularly
complex conflicts.

-- 
Cheers,
Stephen Rothwell

diff --cc fs/btrfs/ioctl.c
index 4d88d54d042d,70eac76804df..000000000000
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@@ -3637,14 -3192,20 +3637,15 @@@ 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)
 -#define BTRFS_MAX_DEDUPE_LEN	SZ_16M
 -
+ loff_t btrfs_dedupe_file_range(struct file *src_file, loff_t loff,
+ 			       struct file *dst_file, loff_t dst_loff,
+ 			       loff_t olen)
  {
  	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;
+ 	int res;
  
 -	if (olen > BTRFS_MAX_DEDUPE_LEN)
 -		olen = BTRFS_MAX_DEDUPE_LEN;
 -
  	if (WARN_ON_ONCE(bs < PAGE_SIZE)) {
  		/*
  		 * Btrfs does not support blocksize < page_size. As a