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 9E93334AB1A; Tue, 26 Aug 2025 13:47:09 +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=1756216029; cv=none; b=EvqaUkACBb1RSZB46ct0zj+HFqzxryI7sRGdcnMlkNtv8UNlN4/g8jaPkPSzR+IkQtr9I2/yy84THIqYyXFwEZ3jAAJTzxt2WxT0IUksCArLJZE29q5+NhbWtkJys2OteWppq/douRLkXGlsZWBXt+wM8Lt72nxKPwiV8972BJE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756216029; c=relaxed/simple; bh=DCGXnjKUhelud1dQc0dDNAp5elm9QF/qKrI03VznD4o=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=pDQnA5H6qV9hqBI1MCxfPtdPKJ/vKLNdBEGcwgIx670HFUobt4/SAeZZ5YYLQJ+VRSE832l505Lod2TlKRwmisgmh8y06wAe9sXgCda439JfNJjdOi23ckir4WN3ptuyGruT1h5Ajb8FNujhnA3VDfY24mN2Ot9XFaRTbG9riEE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=AczwIe03; 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="AczwIe03" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0A8EDC4CEF1; Tue, 26 Aug 2025 13:47:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1756216029; bh=DCGXnjKUhelud1dQc0dDNAp5elm9QF/qKrI03VznD4o=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=AczwIe03Vs7dnX9YKK/UC9OeUwtkNDYGYPfXhqS2m54m39lc/4wFtrFvwuyPb5Llw 5DBmSUKKQCUqlg7FFvbaCjAtquC+YrmNE+CrBLF0jPxd7qffaNPvVH5e2RAOx2mvg5 bXpbQT8gBKl2LXsJZRgo1zcCBV7txoWXsOHHiL70= 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 5.15 256/644] mm/hmm: move pmd_to_hmm_pfn_flags() to the respective #ifdeffery Date: Tue, 26 Aug 2025 13:05:47 +0200 Message-ID: <20250826110952.726120849@linuxfoundation.org> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20250826110946.507083938@linuxfoundation.org> References: <20250826110946.507083938@linuxfoundation.org> User-Agent: quilt/0.68 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 5.15-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)