From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 13DE02BEC2F; Tue, 12 Aug 2025 18:05:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755021941; cv=none; b=YFD6B7SZkRfWJYx54RjMZHGZyAQoiOhJ7ZS6kZ+Nvj8d5PLExdrKBuqjElZpSuXcLCCdS8OCWzMiQpGy8LbCbGYD/iex/w5w+w967wHJlKt6C+BCL+XdW6NqelvklNt/uhC2zAesppkyf19haYw07dgRdi1B3vaJGG7Aw/fDYhQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755021941; c=relaxed/simple; bh=6XQPgq4ntDbXdCxCK1P+lTImIEVC9zQmls9I5pXfSnY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=kVBwGfpXztN1Upz4Er9WXvhgUEPYO7eWmWIWHHX26rovajp2YfsKrs6MTxrzloCPhzyP3CZQX05Jy173n4ZJwVqJfKvhe3cys7WRJnpCyq792G4eXAcfmXyc91ogU4I124bnHvl6IpVYyP4AlPic591Qro5YGEJ5TfRfiSjcQA8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=m3wjnWUN; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="m3wjnWUN" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 77987C4CEF0; Tue, 12 Aug 2025 18:05:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1755021940; bh=6XQPgq4ntDbXdCxCK1P+lTImIEVC9zQmls9I5pXfSnY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=m3wjnWUNAcOfLortOE9TTRYND4xdDVB9JiOaiqG96FQ9qAVmvrCn7JW8mQkD5dm8U HvWuAgHciHIzQlulHtVckinY9j/AGOYD2Uynoqhmqrn4a8cv2/UgDxecroiORgRO13 jg3hDvqT5vy9yqVzQFX1W1LWwcEzb8vHQN3Pqtn4= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Andy Shevchenko , Leon Romanovsky , Alistair Popple , Bill Wendling , Jerome Glisse , Justin Stitt , Nathan Chancellor , Andrew Morton Subject: [PATCH 6.6 261/262] mm/hmm: move pmd_to_hmm_pfn_flags() to the respective #ifdeffery Date: Tue, 12 Aug 2025 19:30:49 +0200 Message-ID: <20250812173004.245064336@linuxfoundation.org> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20250812172952.959106058@linuxfoundation.org> References: <20250812172952.959106058@linuxfoundation.org> User-Agent: quilt/0.68 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Andy Shevchenko commit 188cb385bbf04d486df3e52f28c47b3961f5f0c0 upstream. When pmd_to_hmm_pfn_flags() is unused, it prevents kernel builds with clang, `make W=1` and CONFIG_TRANSPARENT_HUGEPAGE=n: mm/hmm.c:186:29: warning: unused function 'pmd_to_hmm_pfn_flags' [-Wunused-function] Fix this by moving the function to the respective existing ifdeffery for its the only user. See also: 6863f5643dd7 ("kbuild: allow Clang to find unused static inline functions for W=1 build") Link: https://lkml.kernel.org/r/20250710082403.664093-1-andriy.shevchenko@linux.intel.com Fixes: 992de9a8b751 ("mm/hmm: allow to mirror vma of a file on a DAX backed filesystem") Signed-off-by: Andy Shevchenko Reviewed-by: Leon Romanovsky Reviewed-by: Alistair Popple Cc: Andriy Shevchenko Cc: Bill Wendling Cc: Jerome Glisse Cc: Justin Stitt Cc: Nathan Chancellor Cc: Signed-off-by: Andrew Morton Signed-off-by: Greg Kroah-Hartman --- mm/hmm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/mm/hmm.c +++ b/mm/hmm.c @@ -173,6 +173,7 @@ static inline unsigned long hmm_pfn_flag return order << HMM_PFN_ORDER_SHIFT; } +#ifdef CONFIG_TRANSPARENT_HUGEPAGE static inline unsigned long pmd_to_hmm_pfn_flags(struct hmm_range *range, pmd_t pmd) { @@ -183,7 +184,6 @@ static inline unsigned long pmd_to_hmm_p hmm_pfn_flags_order(PMD_SHIFT - PAGE_SHIFT); } -#ifdef CONFIG_TRANSPARENT_HUGEPAGE static int hmm_vma_handle_pmd(struct mm_walk *walk, unsigned long addr, unsigned long end, unsigned long hmm_pfns[], pmd_t pmd)