linux-kernel - linux-next: build warning after merge of the akpm-current tree

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Message-ID: <20220207150655.76173d43@canb.auug.org.au>
Date:   Mon, 7 Feb 2022 15:06:55 +1100
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     Yang Shi <shy828301@...il.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Next Mailing List <linux-next@...r.kernel.org>
Subject: linux-next: build warning after merge of the akpm-current tree

Hi all,

After merging the akpm-current tree, today's linux-next build (arm
multi_v7_defconfig) produced this warning:

fs/proc/task_mmu.c: In function 'pagemap_pmd_range':
fs/proc/task_mmu.c:1444:14: warning: unused variable 'migration' [-Wunused-variable]
 1444 |         bool migration = false;
      |              ^~~~~~~~~

Introduced by commit

  78cff485ae77 ("fs-proc-task_mmuc-dont-read-mapcount-for-migration-entry-v4")

"migration" is only used when CONFIG_TRANSPARENT_HUGEPAGE is defined.

-- 
Cheers,
Stephen Rothwell

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