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

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Date:   Fri, 25 Sep 2020 19:57:36 +1000
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     Andrew Morton <akpm@...ux-foundation.org>,
        Jens Axboe <axboe@...nel.dk>
Cc:     "Matthew Wilcox (Oracle)" <willy@...radead.org>,
        Christoph Hellwig <hch@....de>,
        Linux Next Mailing List <linux-next@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: linux-next: manual merge of the akpm-current tree with the block
 tree

Hi all,

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

  mm/page-writeback.c

between commit:

  1cb039f3dc16 ("bdi: replace BDI_CAP_STABLE_WRITES with a queue and a sb flag")

from the block tree and commit:

  7a3714df632a ("mm/page-writeback: support tail pages in wait_for_stable_page")

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 mm/page-writeback.c
index 358d6f28c627,dac075e451d3..000000000000
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@@ -2849,7 -2849,8 +2849,8 @@@ EXPORT_SYMBOL_GPL(wait_on_page_writebac
   */
  void wait_for_stable_page(struct page *page)
  {
+ 	page = thp_head(page);
 -	if (bdi_cap_stable_pages_required(inode_to_bdi(page->mapping->host)))
 +	if (page->mapping->host->i_sb->s_iflags & SB_I_STABLE_WRITES)
  		wait_on_page_writeback(page);
  }
  EXPORT_SYMBOL_GPL(wait_for_stable_page);

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