From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Kirill A. Shutemov" Subject: [PATCHv3, RFC 24/34] ramfs: enable transparent huge page cache Date: Fri, 5 Apr 2013 14:59:48 +0300 Message-ID: <1365163198-29726-25-git-send-email-kirill.shutemov@linux.intel.com> References: <1365163198-29726-1-git-send-email-kirill.shutemov@linux.intel.com> 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 , linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, "Kirill A. Shutemov" To: Andrea Arcangeli , Andrew Morton Return-path: Received: from mga11.intel.com ([192.55.52.93]:64472 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1161562Ab3DEL6Z (ORCPT ); Fri, 5 Apr 2013 07:58:25 -0400 In-Reply-To: <1365163198-29726-1-git-send-email-kirill.shutemov@linux.intel.com> Sender: linux-fsdevel-owner@vger.kernel.org List-ID: From: "Kirill A. Shutemov" ramfs is the most simple fs from page cache point of view. Let's start transparent huge page cache enabling here. For now we allocate only non-movable huge page. ramfs pages cannot be moved yet. Signed-off-by: Kirill A. Shutemov --- fs/ramfs/inode.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/fs/ramfs/inode.c b/fs/ramfs/inode.c index c24f1e1..54d69c7 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) { -- 1.7.10.4