From: Mike Rapoport <rppt@kernel.org>
To: Arnd Bergmann <arnd@kernel.org>
Cc: Hugh Dickins <hughd@google.com>,
Andrew Morton <akpm@linux-foundation.org>,
Pratyush Yadav <pratyush@kernel.org>,
Pasha Tatashin <pasha.tatashin@soleen.com>,
Arnd Bergmann <arnd@arndb.de>,
Baolin Wang <baolin.wang@linux.alibaba.com>,
Kairui Song <kasong@tencent.com>,
David Hildenbrand <david@kernel.org>,
Christian Brauner <brauner@kernel.org>,
Lorenzo Stoakes <lorenzo.stoakes@oracle.com>,
Kemeng Shi <shikemeng@huaweicloud.com>,
Guo Weikang <guoweikang.kernel@gmail.com>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] [v2] mm: shmem: avoid build warning for CONFIG_SHMEM=n
Date: Thu, 4 Dec 2025 12:55:38 +0200 [thread overview]
Message-ID: <aTFoqq034LYPPDEz@kernel.org> (raw)
In-Reply-To: <20251204102905.1048000-1-arnd@kernel.org>
On Thu, Dec 04, 2025 at 11:28:59AM +0100, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@arndb.de>
>
> The newly added 'flags' variable is unused and causes a warning if
> CONFIG_SHMEM is disabled, since the shmem_acct_size() macro it is passed
> into does nothing:
>
> mm/shmem.c: In function '__shmem_file_setup':
> mm/shmem.c:5816:23: error: unused variable 'flags' [-Werror=unused-variable]
> 5816 | unsigned long flags = (vm_flags & VM_NORESERVE) ? SHMEM_F_NORESERVE : 0;
> | ^~~~~
>
> Replace the two macros with equivalent inline functions tto get the
> argument checking.
>
> Fixes: 6ff1610ced56 ("mm: shmem: use SHMEM_F_* flags instead of VM_* flags")
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
> ---
> v2: make shmem_unacct_size() inline as well.
--
Sincerely yours,
Mike.
next prev parent reply other threads:[~2025-12-04 10:55 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-12-04 10:28 Arnd Bergmann
2025-12-04 10:34 ` David Hildenbrand (Red Hat)
2025-12-04 10:41 ` Arnd Bergmann
2025-12-04 10:55 ` Mike Rapoport
2025-12-04 11:03 ` David Hildenbrand (Red Hat)
2025-12-04 13:34 ` Pratyush Yadav
2025-12-04 10:55 ` Mike Rapoport [this message]
2025-12-04 12:38 ` Baolin Wang
2025-12-04 13:31 ` Pratyush Yadav
2025-12-04 14:10 ` Pasha Tatashin
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