linux-kernel - Re: linux-next: manual merge of the folio tree with the fscache tree

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Date:   Thu, 24 Mar 2022 10:54:26 +1100
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     David Howells <dhowells@...hat.com>
Cc:     Matthew Wilcox <willy@...radead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Next Mailing List <linux-next@...r.kernel.org>
Subject: Re: linux-next: manual merge of the folio tree with the fscache
 tree

Hi all,

On Tue, 15 Mar 2022 20:28:16 +1100 Stephen Rothwell <sfr@...b.auug.org.au> wrote:
>
> Today's linux-next merge of the folio tree got a conflict in:
> 
>   fs/afs/file.c
> 
> between commit:
> 
>   0c31679cf2c0 ("netfs: Add a netfs inode context")
> 
> from the fscache tree and commits:
> 
>   7d165ab9d0a0 ("afs: Convert from launder_page to launder_folio")
>   09f7fc259e5d ("fscache: Convert fscache_set_page_dirty() to fscache_dirty_folio()")
> 
> from the folio 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.
> 
> 
> diff --cc fs/afs/file.c
> index 2b68b2070248,0f9fdb284a20..000000000000
> --- a/fs/afs/file.c
> +++ b/fs/afs/file.c
> @@@ -19,11 -19,13 +19,11 @@@
>   #include "internal.h"
>   
>   static int afs_file_mmap(struct file *file, struct vm_area_struct *vma);
>  -static int afs_readpage(struct file *file, struct page *page);
>   static int afs_symlink_readpage(struct file *file, struct page *page);
> - static void afs_invalidatepage(struct page *page, unsigned int offset,
> - 			       unsigned int length);
> + static void afs_invalidate_folio(struct folio *folio, size_t offset,
> + 			       size_t length);
>   static int afs_releasepage(struct page *page, gfp_t gfp_flags);
>   
>  -static void afs_readahead(struct readahead_control *ractl);
>   static ssize_t afs_file_read_iter(struct kiocb *iocb, struct iov_iter *iter);
>   static void afs_vm_open(struct vm_area_struct *area);
>   static void afs_vm_close(struct vm_area_struct *area);
> @@@ -50,12 -52,12 +50,12 @@@ const struct inode_operations afs_file_
>   };
>   
>   const struct address_space_operations afs_file_aops = {
>  -	.readpage	= afs_readpage,
>  -	.readahead	= afs_readahead,
>  +	.readpage	= netfs_readpage,
>  +	.readahead	= netfs_readahead,
> - 	.set_page_dirty	= afs_set_page_dirty,
> - 	.launder_page	= afs_launder_page,
> + 	.dirty_folio	= afs_dirty_folio,
> + 	.launder_folio	= afs_launder_folio,
>   	.releasepage	= afs_releasepage,
> - 	.invalidatepage	= afs_invalidatepage,
> + 	.invalidate_folio = afs_invalidate_folio,
>   	.write_begin	= afs_write_begin,
>   	.write_end	= afs_write_end,
>   	.writepage	= afs_writepage,

This is now a conflict between the fscache tree and Linus' tree.

-- 
Cheers,
Stephen Rothwell

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