Subject: Re: linux-next: manual merge of the vfs tree with the f2fs tree

From: Stephen Rothwell <[email-masked]>
Date: Wed, 20 Dec 2023 11:13:25 +1100

Hi Al,

On Wed, 20 Dec 2023 10:47:34 +1100 Stephen Rothwell <[email-masked]> wrote:
>
> Today's linux-next merge of the vfs tree got a conflict in:
> 
>   fs/f2fs/namei.c
> 
> between commit:
> 
>   53edb549565f ("f2fs: fix to avoid dirent corruption")
> 
> from the f2fs tree and commit:
> 
>   7deee77b993a ("f2fs: Avoid reading renamed directory if parent does not change")
> 
> from the vfs tree.
> 
> 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.

Then I remembered to look at your suggested resolution and redid it
like you did (see below).
-- 
Cheers,
Stephen Rothwell

--- a/fs/f2fs/namei.c
+++ b/fs/f2fs/namei.c
@@@ -1104,12 -1106,12 +1105,9 @@@ static int f2fs_rename(struct mnt_idma
  		iput(whiteout);
  	}
  
 -	if (old_is_dir) {
 -		if (old_dir_entry && !whiteout)
 -			f2fs_set_link(old_inode, old_dir_entry,
 +	if (old_dir_entry) {
- 		if (old_dir != new_dir)
- 			f2fs_set_link(old_inode, old_dir_entry,
++		f2fs_set_link(old_inode, old_dir_entry,
  						old_dir_page, new_dir);
--		else
--			f2fs_put_page(old_dir_page, 0);
  		f2fs_i_links_write(old_dir, false);
  	}
  	if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT) {