From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) (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 2AE062D7B8; Tue, 23 Apr 2024 22:56:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=90.155.50.34 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713912976; cv=none; b=oJrURXBdFUfOlGAZxTuirJckgSMKD7KvJK765I2wPYK9ZXTqSg4TtT2wyiNtHpfSWO39U3JawkTCXXL2FxKHOF/Mw5pWun3NISlkgVAGUVCFv5ziWPuQW2M3NQmZra8ZcLlInItdh5jCDNbAd7wyyOzc5zKiwmWi1Uhh04hGPXg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713912976; c=relaxed/simple; bh=+hCzUl9kc0sFgtkRonxpDkcPqy2Ge9Y6/5LzUSSXFvA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=AUPZRHPhPLKx+5vowSbOLhHo4rOjQ5OdpAnZ7cTC2Ih9xH5FtqShJgck2Yeg/Z26CYBfcb9Ov5L7XjR1vVeS8E/jQTSlyQd26jAmYQc0G/fYkEaZMadtk9d04b1692V6d31nENITKpTq74vTcbyJI5NQjOofZMqLnRCMUjSNFX4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org; spf=none smtp.mailfrom=infradead.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b=p/a8joIL; arc=none smtp.client-ip=90.155.50.34 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=infradead.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="p/a8joIL" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description; bh=NEsYsbU8qr0emUe6mxit/OuVTFvxbBfZCV5/pFcVA2w=; b=p/a8joILHo6OFpo2LhD6CykxRP WENvmFqHj0Ms3f2UKDAOSFJIen96AOJiItabSIxbfg/vMqH4dve5AA62QmtoQ748wuOlzizNjlL4v e/zDOTLlGiOzyDSauvcqu33bjQxTK2ZeUyy6PqvLrabr328y521cnxeM6BDh9iZ+s9TtErkhXew+z OlE6R3FkJueq/zlMKzBgdWdABtXTXqu/xN0aOtUuyE3D6tkefH6hr2EXw8kA4xvYiF6HC2uyxj/aj ukM0aTq63eh25mHnTS/tu5nyZN7C3c9ERJpH7Wgy6T/aPdNNYtvAGR8cnfSlANAxPuxsZxHnO/yht A2/G5ZJQ==; Received: from willy by casper.infradead.org with local (Exim 4.97.1 #2 (Red Hat Linux)) id 1rzP3K-0000000HG6M-2eAw; Tue, 23 Apr 2024 22:55:54 +0000 From: "Matthew Wilcox (Oracle)" To: Andrew Morton , linux-mm@kvack.org Cc: "Matthew Wilcox (Oracle)" , linux-fsdevel@vger.kernel.org, linux-fscrypt@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net Subject: [PATCH 5/6] userfault; Expand folio use in mfill_atomic_install_pte() Date: Tue, 23 Apr 2024 23:55:36 +0100 Message-ID: <20240423225552.4113447-6-willy@infradead.org> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240423225552.4113447-1-willy@infradead.org> References: <20240423225552.4113447-1-willy@infradead.org> Precedence: bulk X-Mailing-List: linux-fscrypt@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Call page_folio() a little earlier so we can use folio_mapping() instead of page_mapping(), saving a call to compound_head(). Signed-off-by: Matthew Wilcox (Oracle) --- mm/userfaultfd.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/mm/userfaultfd.c b/mm/userfaultfd.c index d9dcc7d71a39..e6486923263c 100644 --- a/mm/userfaultfd.c +++ b/mm/userfaultfd.c @@ -180,9 +180,9 @@ int mfill_atomic_install_pte(pmd_t *dst_pmd, pte_t _dst_pte, *dst_pte; bool writable = dst_vma->vm_flags & VM_WRITE; bool vm_shared = dst_vma->vm_flags & VM_SHARED; - bool page_in_cache = page_mapping(page); spinlock_t *ptl; - struct folio *folio; + struct folio *folio = page_folio(page); + bool page_in_cache = folio_mapping(folio); _dst_pte = mk_pte(page, dst_vma->vm_page_prot); _dst_pte = pte_mkdirty(_dst_pte); @@ -212,7 +212,6 @@ int mfill_atomic_install_pte(pmd_t *dst_pmd, if (!pte_none_mostly(ptep_get(dst_pte))) goto out_unlock; - folio = page_folio(page); if (page_in_cache) { /* Usually, cache pages are already added to LRU */ if (newly_allocated) -- 2.43.0