Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754210Ab3IWMJh (ORCPT ); Mon, 23 Sep 2013 08:09:37 -0400 Received: from mga14.intel.com ([143.182.124.37]:43998 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753981Ab3IWMGO (ORCPT ); Mon, 23 Sep 2013 08:06:14 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.90,962,1371106800"; d="scan'208";a="298196490" From: "Kirill A. Shutemov" To: Andrea Arcangeli , Andrew Morton Cc: Al Viro , Hugh Dickins , Wu Fengguang , Jan Kara , Mel Gorman , linux-mm@kvack.org, Andi Kleen , Matthew Wilcox , "Kirill A. Shutemov" , Hillf Danton , Dave Hansen , Ning Qu , Alexander Shishkin , linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, "Kirill A. Shutemov" Subject: [PATCHv6 22/22] ramfs: enable transparent huge page cache Date: Mon, 23 Sep 2013 15:05:50 +0300 Message-Id: <1379937950-8411-23-git-send-email-kirill.shutemov@linux.intel.com> X-Mailer: git-send-email 1.8.4.rc3 In-Reply-To: <1379937950-8411-1-git-send-email-kirill.shutemov@linux.intel.com> References: <1379937950-8411-1-git-send-email-kirill.shutemov@linux.intel.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1808 Lines: 52 ramfs is the most simple fs from page cache point of view. Let's start transparent huge page cache enabling here. ramfs pages are not movable[1] and switching to transhuge pages doesn't affect that. We need to fix this eventually. [1] http://lkml.org/lkml/2013/4/2/720 Signed-off-by: Kirill A. Shutemov --- fs/ramfs/file-mmu.c | 2 +- fs/ramfs/inode.c | 6 +++++- 2 files changed, 6 insertions(+), 2 deletions(-) diff --git a/fs/ramfs/file-mmu.c b/fs/ramfs/file-mmu.c index 4884ac5ae9..ae787bf9ba 100644 --- a/fs/ramfs/file-mmu.c +++ b/fs/ramfs/file-mmu.c @@ -32,7 +32,7 @@ const struct address_space_operations ramfs_aops = { .readpage = simple_readpage, - .write_begin = simple_write_begin, + .write_begin = simple_thp_write_begin, .write_end = simple_write_end, .set_page_dirty = __set_page_dirty_no_writeback, }; diff --git a/fs/ramfs/inode.c b/fs/ramfs/inode.c index 39d14659a8..5dafdfcd86 100644 --- a/fs/ramfs/inode.c +++ b/fs/ramfs/inode.c @@ -61,7 +61,11 @@ struct inode *ramfs_get_inode(struct super_block *sb, inode_init_owner(inode, dir, mode); inode->i_mapping->a_ops = &ramfs_aops; inode->i_mapping->backing_dev_info = &ramfs_backing_dev_info; - mapping_set_gfp_mask(inode->i_mapping, GFP_HIGHUSER); + /* + * TODO: make ramfs pages movable + */ + mapping_set_gfp_mask(inode->i_mapping, + GFP_TRANSHUGE & ~__GFP_MOVABLE); mapping_set_unevictable(inode->i_mapping); inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME; switch (mode & S_IFMT) { -- 1.8.4.rc3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/