From patchwork Fri May 29 02:57:52 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Matthew Wilcox X-Patchwork-Id: 11577509 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id D047D60D for ; Fri, 29 May 2020 02:58:59 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 91DCE2075F for ; Fri, 29 May 2020 02:58:59 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="qfKtrO7b" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 91DCE2075F Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 7610A800BD; Thu, 28 May 2020 22:58:31 -0400 (EDT) Delivered-To: linux-mm-outgoing@kvack.org Received: by kanga.kvack.org (Postfix, from userid 40) id B621C800CA; Thu, 28 May 2020 22:58:30 -0400 (EDT) X-Original-To: int-list-linux-mm@kvack.org X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 88172800C4; Thu, 28 May 2020 22:58:30 -0400 (EDT) X-Original-To: linux-mm@kvack.org X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0099.hostedemail.com [216.40.44.99]) by kanga.kvack.org (Postfix) with ESMTP id B2D9A800C4 for ; Thu, 28 May 2020 22:58:29 -0400 (EDT) Received: from smtpin13.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id 801D62C78 for ; Fri, 29 May 2020 02:58:29 +0000 (UTC) X-FDA: 76868248338.13.mist90_fe58354b0a25 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin13.hostedemail.com (Postfix) with ESMTP id 6517918140B60 for ; Fri, 29 May 2020 02:58:29 +0000 (UTC) X-Spam-Summary: 2,0,0,c2cbbe91076090d8,d41d8cd98f00b204,willy@infradead.org,,RULES_HIT:41:355:379:541:800:960:968:973:988:989:1260:1311:1314:1345:1359:1437:1515:1534:1542:1711:1730:1747:1777:1792:2198:2199:2393:2559:2562:2693:3138:3139:3140:3141:3142:3353:3865:3867:3870:4321:4605:5007:6238:6261:6653:7576:7903:10004:11026:11473:11658:11914:12043:12296:12297:12438:12555:12895:12986:13161:13229:13894:14096:14181:14394:14721:21080:21433:21451:21627:21987:21990:30054,0,RBL:198.137.202.133:@infradead.org:.lbl8.mailshell.net-62.8.0.100 64.201.201.201,CacheIP:none,Bayesian:0.5,0.5,0.5,Netcheck:none,DomainCache:0,MSF:not bulk,SPF:fn,MSBL:0,DNSBL:neutral,Custom_rules:0:0:0,LFtime:0,LUA_SUMMARY:none X-HE-Tag: mist90_fe58354b0a25 X-Filterd-Recvd-Size: 3779 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) by imf30.hostedemail.com (Postfix) with ESMTP for ; Fri, 29 May 2020 02:58:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.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=ZCjaR6lz6Pllejoy8LzjdLNrtLD4RmCM/+nd+osKuQ0=; b=qfKtrO7bWwW1u9DotggmrDl8lM FNbH8XE27C0tTkHSZcxuQ6ODJjfjsHw+y6jORkwWFyEy3I2rtfQxL1T09Y6/1q+8Ao8bgbWKX/qdE EPyvk/9tphBnbz6zT7jQH8t+Op/G3ZTiT1TyqquioB0teHSqqMLDLD+oYtjT9zbzXHtmybHSdOqKg RHkW8xFODQOEE9UPcigK2Xg4NM4rKmm7vNEOqxsotT8RQh+/eu9G6TNW+3r31YCZ1FQ3OGQh9rFML kyiivwhFFE23LRlkx82LNCDRWavZskBv5A4Qoy5K3GBmwVXaoZSkVE6ifJ31h0vPyMvvT4hD5vJRH Ikz7F9Zg==; Received: from willy by bombadil.infradead.org with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1jeVE2-0008QH-RJ; Fri, 29 May 2020 02:58:26 +0000 From: Matthew Wilcox To: linux-fsdevel@vger.kernel.org Cc: "Matthew Wilcox (Oracle)" , linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: [PATCH v5 07/39] fs: Add a filesystem flag for large pages Date: Thu, 28 May 2020 19:57:52 -0700 Message-Id: <20200529025824.32296-8-willy@infradead.org> X-Mailer: git-send-email 2.21.1 In-Reply-To: <20200529025824.32296-1-willy@infradead.org> References: <20200529025824.32296-1-willy@infradead.org> MIME-Version: 1.0 X-Rspamd-Queue-Id: 6517918140B60 X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam05 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: From: "Matthew Wilcox (Oracle)" The page cache needs to know whether the filesystem supports pages > PAGE_SIZE. Signed-off-by: Matthew Wilcox (Oracle) --- fs/inode.c | 2 ++ include/linux/fs.h | 1 + include/linux/pagemap.h | 6 ++++++ 3 files changed, 9 insertions(+) diff --git a/fs/inode.c b/fs/inode.c index 93d9252a00ab..a92947d63098 100644 --- a/fs/inode.c +++ b/fs/inode.c @@ -181,6 +181,8 @@ int inode_init_always(struct super_block *sb, struct inode *inode) mapping->a_ops = &empty_aops; mapping->host = inode; mapping->flags = 0; + if (sb->s_type->fs_flags & FS_LARGE_PAGES) + __set_bit(AS_LARGE_PAGES, &mapping->flags); mapping->wb_err = 0; atomic_set(&mapping->i_mmap_writable, 0); #ifdef CONFIG_READ_ONLY_THP_FOR_FS diff --git a/include/linux/fs.h b/include/linux/fs.h index 55c743925c40..777783c8760b 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2241,6 +2241,7 @@ struct file_system_type { #define FS_HAS_SUBTYPE 4 #define FS_USERNS_MOUNT 8 /* Can be mounted by userns root */ #define FS_DISALLOW_NOTIFY_PERM 16 /* Disable fanotify permission events */ +#define FS_LARGE_PAGES 8192 /* Remove once all fs converted */ #define FS_RENAME_DOES_D_MOVE 32768 /* FS will handle d_move() during rename() internally. */ int (*init_fs_context)(struct fs_context *); const struct fs_parameter_spec *parameters; diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h index 36bfc9d855bb..ea869a7fda7a 100644 --- a/include/linux/pagemap.h +++ b/include/linux/pagemap.h @@ -29,6 +29,7 @@ enum mapping_flags { AS_EXITING = 4, /* final truncate in progress */ /* writeback related tags are not used */ AS_NO_WRITEBACK_TAGS = 5, + AS_LARGE_PAGES = 6, /* large pages supported */ }; /** @@ -116,6 +117,11 @@ static inline void mapping_set_gfp_mask(struct address_space *m, gfp_t mask) m->gfp_mask = mask; } +static inline bool mapping_large_pages(struct address_space *mapping) +{ + return test_bit(AS_LARGE_PAGES, &mapping->flags); +} + void release_pages(struct page **pages, int nr); /*