From patchwork Fri Sep 15 21:32:48 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Luis Chamberlain X-Patchwork-Id: 13387729 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E4388CD13D2 for ; Fri, 15 Sep 2023 21:33:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237834AbjIOVdc (ORCPT ); Fri, 15 Sep 2023 17:33:32 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39994 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237756AbjIOVdP (ORCPT ); Fri, 15 Sep 2023 17:33:15 -0400 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:3::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7F1FF197; Fri, 15 Sep 2023 14:33:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=Sender:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description; bh=tAHuZOTRnJkuAieR6OQU11hxZjIemhP5K5oO05h360E=; b=k1J5RsdsGwRvjm0rSSOFEnoVKZ uAidGm/Nh4/fnxXdDaj9BuBFL+fyFphAjuYXfUD3YUn9NM4jzz6HSyBmITkl2PaCf/7OJq0AfbvUS Sp2ErZ0Fe6eErMLGuvRZF7wbAW/XQXIE5LDJGdDrqbNy91/LUocM18NcAZHQJ2f2MVHq+3o7D2Djr zJulmaozeTK++xfokkoo4a63a+WYesGZ8ANM4E7sBvazvoSDDsPaBG8NRgYD+5+d4hBSqTJfuuMZ0 jYjkuwyatKrpmMMs01Xafjr6yadQZOhIW3LNIJVmV9r7cUUpfVE3Vr4T3Bc39VIQElJgmUzGGveOz W3uPNhIg==; Received: from mcgrof by bombadil.infradead.org with local (Exim 4.96 #2 (Red Hat Linux)) id 1qhGQq-00BQnQ-0o; Fri, 15 Sep 2023 21:32:56 +0000 From: Luis Chamberlain To: hch@infradead.org, djwong@kernel.org, dchinner@redhat.com, kbusch@kernel.org, sagi@grimberg.me, axboe@fb.com Cc: willy@infradead.org, brauner@kernel.org, hare@suse.de, ritesh.list@gmail.com, rgoldwyn@suse.com, jack@suse.cz, ziy@nvidia.com, ryan.roberts@arm.com, patches@lists.linux.dev, linux-xfs@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-block@vger.kernel.org, p.raghav@samsung.com, da.gomez@samsung.com, dan.helmick@samsung.com, mcgrof@kernel.org Subject: [RFC v2 04/10] filesystems: add filesytem buffer-head flag Date: Fri, 15 Sep 2023 14:32:48 -0700 Message-Id: <20230915213254.2724586-5-mcgrof@kernel.org> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20230915213254.2724586-1-mcgrof@kernel.org> References: <20230915213254.2724586-1-mcgrof@kernel.org> MIME-Version: 1.0 Sender: Luis Chamberlain Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org Signed-off-by: Luis Chamberlain --- fs/adfs/super.c | 2 +- fs/affs/super.c | 2 +- fs/befs/linuxvfs.c | 2 +- fs/bfs/inode.c | 2 +- fs/efs/super.c | 2 +- fs/exfat/super.c | 2 +- fs/ext2/super.c | 2 +- fs/ext4/super.c | 7 ++++--- fs/f2fs/super.c | 2 +- fs/fat/namei_msdos.c | 2 +- fs/fat/namei_vfat.c | 2 +- fs/freevxfs/vxfs_super.c | 2 +- fs/gfs2/ops_fstype.c | 4 ++-- fs/hfs/super.c | 2 +- fs/hfsplus/super.c | 2 +- fs/isofs/inode.c | 2 +- fs/jfs/super.c | 2 +- fs/minix/inode.c | 2 +- fs/nilfs2/super.c | 2 +- fs/ntfs/super.c | 2 +- fs/ntfs3/super.c | 2 +- fs/ocfs2/super.c | 2 +- fs/omfs/inode.c | 2 +- fs/qnx4/inode.c | 2 +- fs/qnx6/inode.c | 2 +- fs/reiserfs/super.c | 2 +- fs/sysv/super.c | 4 ++-- fs/udf/super.c | 2 +- fs/ufs/super.c | 2 +- include/linux/fs.h | 1 + 30 files changed, 35 insertions(+), 33 deletions(-) diff --git a/fs/adfs/super.c b/fs/adfs/super.c index e8bfc38239cd..7c57fff29bb4 100644 --- a/fs/adfs/super.c +++ b/fs/adfs/super.c @@ -464,7 +464,7 @@ static struct file_system_type adfs_fs_type = { .name = "adfs", .mount = adfs_mount, .kill_sb = kill_block_super, - .fs_flags = FS_REQUIRES_DEV, + .fs_flags = FS_REQUIRES_DEV | FS_BUFFER_HEADS, }; MODULE_ALIAS_FS("adfs"); diff --git a/fs/affs/super.c b/fs/affs/super.c index 58b391446ae1..2dc200010740 100644 --- a/fs/affs/super.c +++ b/fs/affs/super.c @@ -649,7 +649,7 @@ static struct file_system_type affs_fs_type = { .name = "affs", .mount = affs_mount, .kill_sb = affs_kill_sb, - .fs_flags = FS_REQUIRES_DEV, + .fs_flags = FS_REQUIRES_DEV | FS_BUFFER_HEADS, }; MODULE_ALIAS_FS("affs"); diff --git a/fs/befs/linuxvfs.c b/fs/befs/linuxvfs.c index 9a16a51fbb88..64715f554034 100644 --- a/fs/befs/linuxvfs.c +++ b/fs/befs/linuxvfs.c @@ -982,7 +982,7 @@ static struct file_system_type befs_fs_type = { .name = "befs", .mount = befs_mount, .kill_sb = kill_block_super, - .fs_flags = FS_REQUIRES_DEV, + .fs_flags = FS_REQUIRES_DEV | FS_BUFFER_HEADS, }; MODULE_ALIAS_FS("befs"); diff --git a/fs/bfs/inode.c b/fs/bfs/inode.c index e6a76ae9eb44..e94d7c92b591 100644 --- a/fs/bfs/inode.c +++ b/fs/bfs/inode.c @@ -459,7 +459,7 @@ static struct file_system_type bfs_fs_type = { .name = "bfs", .mount = bfs_mount, .kill_sb = kill_block_super, - .fs_flags = FS_REQUIRES_DEV, + .fs_flags = FS_REQUIRES_DEV | FS_BUFFER_HEADS, }; MODULE_ALIAS_FS("bfs"); diff --git a/fs/efs/super.c b/fs/efs/super.c index b287f47c165b..35891a596267 100644 --- a/fs/efs/super.c +++ b/fs/efs/super.c @@ -40,7 +40,7 @@ static struct file_system_type efs_fs_type = { .name = "efs", .mount = efs_mount, .kill_sb = efs_kill_sb, - .fs_flags = FS_REQUIRES_DEV, + .fs_flags = FS_REQUIRES_DEV | FS_BUFFER_HEADS, }; MODULE_ALIAS_FS("efs"); diff --git a/fs/exfat/super.c b/fs/exfat/super.c index 17100b13dcdc..fbc2aa45d291 100644 --- a/fs/exfat/super.c +++ b/fs/exfat/super.c @@ -786,7 +786,7 @@ static struct file_system_type exfat_fs_type = { .init_fs_context = exfat_init_fs_context, .parameters = exfat_parameters, .kill_sb = exfat_kill_sb, - .fs_flags = FS_REQUIRES_DEV, + .fs_flags = FS_REQUIRES_DEV | FS_BUFFER_HEADS, }; static void exfat_inode_init_once(void *foo) diff --git a/fs/ext2/super.c b/fs/ext2/super.c index aaf3e3e88cb2..ca2c44ca2c29 100644 --- a/fs/ext2/super.c +++ b/fs/ext2/super.c @@ -1629,7 +1629,7 @@ static struct file_system_type ext2_fs_type = { .name = "ext2", .mount = ext2_mount, .kill_sb = kill_block_super, - .fs_flags = FS_REQUIRES_DEV, + .fs_flags = FS_REQUIRES_DEV | FS_BUFFER_HEADS, }; MODULE_ALIAS_FS("ext2"); diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 38217422f938..b7fab39cd1ca 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -137,7 +137,7 @@ static struct file_system_type ext2_fs_type = { .init_fs_context = ext4_init_fs_context, .parameters = ext4_param_specs, .kill_sb = ext4_kill_sb, - .fs_flags = FS_REQUIRES_DEV, + .fs_flags = FS_REQUIRES_DEV | FS_BUFFER_HEADS, }; MODULE_ALIAS_FS("ext2"); MODULE_ALIAS("ext2"); @@ -153,7 +153,7 @@ static struct file_system_type ext3_fs_type = { .init_fs_context = ext4_init_fs_context, .parameters = ext4_param_specs, .kill_sb = ext4_kill_sb, - .fs_flags = FS_REQUIRES_DEV, + .fs_flags = FS_REQUIRES_DEV | FS_BUFFER_HEADS, }; MODULE_ALIAS_FS("ext3"); MODULE_ALIAS("ext3"); @@ -7314,7 +7314,8 @@ static struct file_system_type ext4_fs_type = { .init_fs_context = ext4_init_fs_context, .parameters = ext4_param_specs, .kill_sb = ext4_kill_sb, - .fs_flags = FS_REQUIRES_DEV | FS_ALLOW_IDMAP | FS_MGTIME, + .fs_flags = FS_REQUIRES_DEV | FS_ALLOW_IDMAP | FS_MGTIME | + FS_BUFFER_HEADS, }; MODULE_ALIAS_FS("ext4"); diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index fe25ff9cebbe..6ffc7a4d57d8 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -4903,7 +4903,7 @@ static struct file_system_type f2fs_fs_type = { .name = "f2fs", .mount = f2fs_mount, .kill_sb = kill_f2fs_super, - .fs_flags = FS_REQUIRES_DEV | FS_ALLOW_IDMAP, + .fs_flags = FS_REQUIRES_DEV | FS_ALLOW_IDMAP | FS_BUFFER_HEADS, }; MODULE_ALIAS_FS("f2fs"); diff --git a/fs/fat/namei_msdos.c b/fs/fat/namei_msdos.c index 2116c486843b..785ee85cf77d 100644 --- a/fs/fat/namei_msdos.c +++ b/fs/fat/namei_msdos.c @@ -667,7 +667,7 @@ static struct file_system_type msdos_fs_type = { .name = "msdos", .mount = msdos_mount, .kill_sb = kill_block_super, - .fs_flags = FS_REQUIRES_DEV | FS_ALLOW_IDMAP, + .fs_flags = FS_REQUIRES_DEV | FS_ALLOW_IDMAP | FS_BUFFER_HEADS, }; MODULE_ALIAS_FS("msdos"); diff --git a/fs/fat/namei_vfat.c b/fs/fat/namei_vfat.c index c4d00999a433..4fe85c569543 100644 --- a/fs/fat/namei_vfat.c +++ b/fs/fat/namei_vfat.c @@ -1212,7 +1212,7 @@ static struct file_system_type vfat_fs_type = { .name = "vfat", .mount = vfat_mount, .kill_sb = kill_block_super, - .fs_flags = FS_REQUIRES_DEV | FS_ALLOW_IDMAP, + .fs_flags = FS_REQUIRES_DEV | FS_ALLOW_IDMAP | FS_BUFFER_HEADS, }; MODULE_ALIAS_FS("vfat"); diff --git a/fs/freevxfs/vxfs_super.c b/fs/freevxfs/vxfs_super.c index 310d73e254df..d1e042784694 100644 --- a/fs/freevxfs/vxfs_super.c +++ b/fs/freevxfs/vxfs_super.c @@ -293,7 +293,7 @@ static struct file_system_type vxfs_fs_type = { .name = "vxfs", .mount = vxfs_mount, .kill_sb = kill_block_super, - .fs_flags = FS_REQUIRES_DEV, + .fs_flags = FS_REQUIRES_DEV | FS_BUFFER_HEADS, }; MODULE_ALIAS_FS("vxfs"); /* makes mount -t vxfs autoload the module */ MODULE_ALIAS("vxfs"); diff --git a/fs/gfs2/ops_fstype.c b/fs/gfs2/ops_fstype.c index ecf789b7168c..f97d8480e665 100644 --- a/fs/gfs2/ops_fstype.c +++ b/fs/gfs2/ops_fstype.c @@ -1810,7 +1810,7 @@ static void gfs2_kill_sb(struct super_block *sb) struct file_system_type gfs2_fs_type = { .name = "gfs2", - .fs_flags = FS_REQUIRES_DEV, + .fs_flags = FS_REQUIRES_DEV | FS_BUFFER_HEADS, .init_fs_context = gfs2_init_fs_context, .parameters = gfs2_fs_parameters, .kill_sb = gfs2_kill_sb, @@ -1820,7 +1820,7 @@ MODULE_ALIAS_FS("gfs2"); struct file_system_type gfs2meta_fs_type = { .name = "gfs2meta", - .fs_flags = FS_REQUIRES_DEV, + .fs_flags = FS_REQUIRES_DEV | FS_BUFFER_HEADS, .init_fs_context = gfs2_meta_init_fs_context, .owner = THIS_MODULE, }; diff --git a/fs/hfs/super.c b/fs/hfs/super.c index 6764afa98a6f..1b31b8e2b7ef 100644 --- a/fs/hfs/super.c +++ b/fs/hfs/super.c @@ -461,7 +461,7 @@ static struct file_system_type hfs_fs_type = { .name = "hfs", .mount = hfs_mount, .kill_sb = kill_block_super, - .fs_flags = FS_REQUIRES_DEV, + .fs_flags = FS_REQUIRES_DEV | FS_BUFFER_HEADS, }; MODULE_ALIAS_FS("hfs"); diff --git a/fs/hfsplus/super.c b/fs/hfsplus/super.c index 1986b4f18a90..efc12ff05e0f 100644 --- a/fs/hfsplus/super.c +++ b/fs/hfsplus/super.c @@ -646,7 +646,7 @@ static struct file_system_type hfsplus_fs_type = { .name = "hfsplus", .mount = hfsplus_mount, .kill_sb = kill_block_super, - .fs_flags = FS_REQUIRES_DEV, + .fs_flags = FS_REQUIRES_DEV | FS_BUFFER_HEADS, }; MODULE_ALIAS_FS("hfsplus"); diff --git a/fs/isofs/inode.c b/fs/isofs/inode.c index 2ee21286ac8f..96d5b4dfec12 100644 --- a/fs/isofs/inode.c +++ b/fs/isofs/inode.c @@ -1564,7 +1564,7 @@ static struct file_system_type iso9660_fs_type = { .name = "iso9660", .mount = isofs_mount, .kill_sb = kill_block_super, - .fs_flags = FS_REQUIRES_DEV, + .fs_flags = FS_REQUIRES_DEV | FS_BUFFER_HEADS, }; MODULE_ALIAS_FS("iso9660"); MODULE_ALIAS("iso9660"); diff --git a/fs/jfs/super.c b/fs/jfs/super.c index 2e2f7f6d36a0..052c277eab9f 100644 --- a/fs/jfs/super.c +++ b/fs/jfs/super.c @@ -906,7 +906,7 @@ static struct file_system_type jfs_fs_type = { .name = "jfs", .mount = jfs_do_mount, .kill_sb = kill_block_super, - .fs_flags = FS_REQUIRES_DEV, + .fs_flags = FS_REQUIRES_DEV | FS_BUFFER_HEADS, }; MODULE_ALIAS_FS("jfs"); diff --git a/fs/minix/inode.c b/fs/minix/inode.c index df575473c1cc..ae2bbb610603 100644 --- a/fs/minix/inode.c +++ b/fs/minix/inode.c @@ -689,7 +689,7 @@ static struct file_system_type minix_fs_type = { .name = "minix", .mount = minix_mount, .kill_sb = kill_block_super, - .fs_flags = FS_REQUIRES_DEV, + .fs_flags = FS_REQUIRES_DEV | FS_BUFFER_HEADS, }; MODULE_ALIAS_FS("minix"); diff --git a/fs/nilfs2/super.c b/fs/nilfs2/super.c index a5d1fa4e7552..8e3737a3302a 100644 --- a/fs/nilfs2/super.c +++ b/fs/nilfs2/super.c @@ -1371,7 +1371,7 @@ struct file_system_type nilfs_fs_type = { .name = "nilfs2", .mount = nilfs_mount, .kill_sb = kill_block_super, - .fs_flags = FS_REQUIRES_DEV, + .fs_flags = FS_REQUIRES_DEV | FS_BUFFER_HEADS, }; MODULE_ALIAS_FS("nilfs2"); diff --git a/fs/ntfs/super.c b/fs/ntfs/super.c index 56a7d5bd33e4..eb9e434b6541 100644 --- a/fs/ntfs/super.c +++ b/fs/ntfs/super.c @@ -3062,7 +3062,7 @@ static struct file_system_type ntfs_fs_type = { .name = "ntfs", .mount = ntfs_mount, .kill_sb = kill_block_super, - .fs_flags = FS_REQUIRES_DEV, + .fs_flags = FS_REQUIRES_DEV | FS_BUFFER_HEADS, }; MODULE_ALIAS_FS("ntfs"); diff --git a/fs/ntfs3/super.c b/fs/ntfs3/super.c index cfec5e0c7f66..40f09d5159d2 100644 --- a/fs/ntfs3/super.c +++ b/fs/ntfs3/super.c @@ -1738,7 +1738,7 @@ static struct file_system_type ntfs_fs_type = { .init_fs_context = ntfs_init_fs_context, .parameters = ntfs_fs_parameters, .kill_sb = ntfs3_kill_sb, - .fs_flags = FS_REQUIRES_DEV | FS_ALLOW_IDMAP, + .fs_flags = FS_REQUIRES_DEV | FS_ALLOW_IDMAP | FS_BUFFER_HEADS, }; // clang-format on diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c index 6b906424902b..50d5be9fb28f 100644 --- a/fs/ocfs2/super.c +++ b/fs/ocfs2/super.c @@ -1191,7 +1191,7 @@ static struct file_system_type ocfs2_fs_type = { .name = "ocfs2", .mount = ocfs2_mount, .kill_sb = kill_block_super, - .fs_flags = FS_REQUIRES_DEV|FS_RENAME_DOES_D_MOVE, + .fs_flags = FS_REQUIRES_DEV|FS_RENAME_DOES_D_MOVE | FS_BUFFER_HEADS, .next = NULL }; MODULE_ALIAS_FS("ocfs2"); diff --git a/fs/omfs/inode.c b/fs/omfs/inode.c index 2f8c1882f45c..e95b7d91fe35 100644 --- a/fs/omfs/inode.c +++ b/fs/omfs/inode.c @@ -607,7 +607,7 @@ static struct file_system_type omfs_fs_type = { .name = "omfs", .mount = omfs_mount, .kill_sb = kill_block_super, - .fs_flags = FS_REQUIRES_DEV, + .fs_flags = FS_REQUIRES_DEV | FS_BUFFER_HEADS, }; MODULE_ALIAS_FS("omfs"); diff --git a/fs/qnx4/inode.c b/fs/qnx4/inode.c index a7171f5532a1..4f66b93397d7 100644 --- a/fs/qnx4/inode.c +++ b/fs/qnx4/inode.c @@ -389,7 +389,7 @@ static struct file_system_type qnx4_fs_type = { .name = "qnx4", .mount = qnx4_mount, .kill_sb = qnx4_kill_sb, - .fs_flags = FS_REQUIRES_DEV, + .fs_flags = FS_REQUIRES_DEV | FS_BUFFER_HEADS, }; MODULE_ALIAS_FS("qnx4"); diff --git a/fs/qnx6/inode.c b/fs/qnx6/inode.c index 21f90d519f1a..68f650d67d3b 100644 --- a/fs/qnx6/inode.c +++ b/fs/qnx6/inode.c @@ -645,7 +645,7 @@ static struct file_system_type qnx6_fs_type = { .name = "qnx6", .mount = qnx6_mount, .kill_sb = kill_block_super, - .fs_flags = FS_REQUIRES_DEV, + .fs_flags = FS_REQUIRES_DEV | FS_BUFFER_HEADS, }; MODULE_ALIAS_FS("qnx6"); diff --git a/fs/reiserfs/super.c b/fs/reiserfs/super.c index 7eaf36b3de12..838046f43d11 100644 --- a/fs/reiserfs/super.c +++ b/fs/reiserfs/super.c @@ -2635,7 +2635,7 @@ struct file_system_type reiserfs_fs_type = { .name = "reiserfs", .mount = get_super_block, .kill_sb = reiserfs_kill_sb, - .fs_flags = FS_REQUIRES_DEV, + .fs_flags = FS_REQUIRES_DEV | FS_BUFFER_HEADS, }; MODULE_ALIAS_FS("reiserfs"); diff --git a/fs/sysv/super.c b/fs/sysv/super.c index 3365a30dc1e0..92f08cb24a28 100644 --- a/fs/sysv/super.c +++ b/fs/sysv/super.c @@ -545,7 +545,7 @@ static struct file_system_type sysv_fs_type = { .name = "sysv", .mount = sysv_mount, .kill_sb = kill_block_super, - .fs_flags = FS_REQUIRES_DEV, + .fs_flags = FS_REQUIRES_DEV | FS_BUFFER_HEADS, }; MODULE_ALIAS_FS("sysv"); @@ -554,7 +554,7 @@ static struct file_system_type v7_fs_type = { .name = "v7", .mount = v7_mount, .kill_sb = kill_block_super, - .fs_flags = FS_REQUIRES_DEV, + .fs_flags = FS_REQUIRES_DEV | FS_BUFFER_HEADS, }; MODULE_ALIAS_FS("v7"); MODULE_ALIAS("v7"); diff --git a/fs/udf/super.c b/fs/udf/super.c index 928a04d9d9e0..9f160973cbe8 100644 --- a/fs/udf/super.c +++ b/fs/udf/super.c @@ -130,7 +130,7 @@ static struct file_system_type udf_fstype = { .name = "udf", .mount = udf_mount, .kill_sb = kill_block_super, - .fs_flags = FS_REQUIRES_DEV, + .fs_flags = FS_REQUIRES_DEV | FS_BUFFER_HEADS, }; MODULE_ALIAS_FS("udf"); diff --git a/fs/ufs/super.c b/fs/ufs/super.c index 23377c1baed9..7829c325d011 100644 --- a/fs/ufs/super.c +++ b/fs/ufs/super.c @@ -1513,7 +1513,7 @@ static struct file_system_type ufs_fs_type = { .name = "ufs", .mount = ufs_mount, .kill_sb = kill_block_super, - .fs_flags = FS_REQUIRES_DEV, + .fs_flags = FS_REQUIRES_DEV | FS_BUFFER_HEADS, }; MODULE_ALIAS_FS("ufs"); diff --git a/include/linux/fs.h b/include/linux/fs.h index ebc7b8ac5008..35b661b48a49 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2336,6 +2336,7 @@ struct file_system_type { #define FS_DISALLOW_NOTIFY_PERM 16 /* Disable fanotify permission events */ #define FS_ALLOW_IDMAP 32 /* FS has been updated to handle vfs idmappings. */ #define FS_MGTIME 64 /* FS uses multigrain timestamps */ +#define FS_BUFFER_HEADS 128 /* filesystem requires buffer-heads */ #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;