linux-kernel - linux-next: manual merge of the akpm-current tree with the fscache tree

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Message-ID: <20210211212437.6d3df60f@canb.auug.org.au>
Date:   Thu, 11 Feb 2021 21:24:37 +1100
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     Andrew Morton <akpm@...ux-foundation.org>,
        David Howells <dhowells@...hat.com>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Next Mailing List <linux-next@...r.kernel.org>,
        "Matthew Wilcox (Oracle)" <willy@...radead.org>
Subject: linux-next: manual merge of the akpm-current tree with the fscache
 tree

Hi all,

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

  include/linux/pagemap.h

between commits:

  13aecd8259dc ("mm: Implement readahead_control pageset expansion")
  9a28f7e68602 ("netfs: Rename unlock_page_fscache() and wait_on_page_fscache()")

from the fscache tree and commits:

  cd669a9cbd89 ("mm/filemap: add mapping_seek_hole_data")
  34c37da5f411 ("mm/filemap: pass a sleep state to put_and_wait_on_page_locked")

from the akpm-current 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.

-- 
Cheers,
Stephen Rothwell

diff --cc include/linux/pagemap.h
index a88ccc9ab0b1,20225b067583..000000000000
--- a/include/linux/pagemap.h
+++ b/include/linux/pagemap.h
@@@ -682,22 -681,7 +682,21 @@@ static inline int wait_on_page_locked_k
  	return wait_on_page_bit_killable(compound_head(page), PG_locked);
  }
  
 +/**
 + * wait_on_page_private_2 - Wait for PG_private_2 to be cleared on a page
 + * @page: The page
 + *
 + * Wait for the PG_private_2 page bit to be removed from a page.  This is, for
 + * example, used to handle a netfs page being written to a local disk cache,
 + * thereby allowing writes to the cache for the same page to be serialised.
 + */
 +static inline void wait_on_page_private_2(struct page *page)
 +{
 +	if (PagePrivate2(page))
 +		wait_on_page_bit(compound_head(page), PG_private_2);
 +}
 +
- extern void put_and_wait_on_page_locked(struct page *page);
- 
+ int put_and_wait_on_page_locked(struct page *page, int state);
  void wait_on_page_writeback(struct page *page);
  extern void end_page_writeback(struct page *page);
  void wait_for_stable_page(struct page *page);
@@@ -772,11 -756,11 +771,13 @@@ int add_to_page_cache_lru(struct page *
  				pgoff_t index, gfp_t gfp_mask);
  extern void delete_from_page_cache(struct page *page);
  extern void __delete_from_page_cache(struct page *page, void *shadow);
- int replace_page_cache_page(struct page *old, struct page *new, gfp_t gfp_mask);
+ void replace_page_cache_page(struct page *old, struct page *new);
  void delete_from_page_cache_batch(struct address_space *mapping,
  				  struct pagevec *pvec);
 +void readahead_expand(struct readahead_control *ractl,
 +		      loff_t new_start, size_t new_len);
+ loff_t mapping_seek_hole_data(struct address_space *, loff_t start, loff_t end,
+ 		int whence);
  
  /*
   * Like add_to_page_cache_locked, but used to add newly allocated pages:

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