From patchwork Tue Jul 25 14:58:14 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeff Layton X-Patchwork-Id: 13326665 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 77AE5C04FE0 for ; Tue, 25 Jul 2023 14:59:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231778AbjGYO7L (ORCPT ); Tue, 25 Jul 2023 10:59:11 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60100 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231207AbjGYO7H (ORCPT ); Tue, 25 Jul 2023 10:59:07 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8C1DB1BCC; Tue, 25 Jul 2023 07:58:58 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 109FB6179A; Tue, 25 Jul 2023 14:58:58 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 21E2AC433B8; Tue, 25 Jul 2023 14:58:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1690297137; bh=Y79V8fW1dayS/ZW42NSnZx7OZABNpnqUWyYbPZtv6GQ=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=GqO7d5tPJZgq328R0MhnwJ8+wudmdv2U3+AY7l7M4WMycAMtDjITtMl2vxR/xQeEj u9SaC5OYWKYvEopiuEqOi+IVIc2CNRAzKSIRSACrVM6yQ5dyRBCBwGGSKqXqqNCNQh MqxbzjfnWngUTTBoH4K/ge+it7HQeSFR58bCi1kQvjGyShmgSfOOpMH9IzWcs38QME mOtlW+GkxR2cM/N6k2G6rivacB4AWbPBNVijc6ubI9GuNtOJqIfV89zeNzMXje3lmQ Knq4UFLFllYBg0vVFUtLb1wZhx4UigLJ1MKQSBJciDZuWT6dZLad50gMU9N5+OABCB X12oy+wsDH/Rg== From: Jeff Layton Date: Tue, 25 Jul 2023 10:58:14 -0400 Subject: [PATCH v6 1/7] fs: pass the request_mask to generic_fillattr MIME-Version: 1.0 Message-Id: <20230725-mgctime-v6-1-a794c2b7abca@kernel.org> References: <20230725-mgctime-v6-0-a794c2b7abca@kernel.org> In-Reply-To: <20230725-mgctime-v6-0-a794c2b7abca@kernel.org> To: Eric Van Hensbergen , Latchesar Ionkov , Dominique Martinet , Christian Schoenebeck , David Howells , Marc Dionne , Chris Mason , Josef Bacik , David Sterba , Xiubo Li , Ilya Dryomov , Jan Harkes , coda@cs.cmu.edu, Tyler Hicks , Gao Xiang , Chao Yu , Yue Hu , Jeffle Xu , Namjae Jeon , Sungjong Seo , Jan Kara , Theodore Ts'o , Andreas Dilger , Jaegeuk Kim , OGAWA Hirofumi , Miklos Szeredi , Bob Peterson , Andreas Gruenbacher , Greg Kroah-Hartman , Tejun Heo , Alexander Viro , Christian Brauner , Trond Myklebust , Anna Schumaker , Konstantin Komarov , Mark Fasheh , Joel Becker , Joseph Qi , Mike Marshall , Martin Brandenburg , Luis Chamberlain , Kees Cook , Iurii Zaikin , Steve French , Paulo Alcantara , Ronnie Sahlberg , Shyam Prasad N , Tom Talpey , Sergey Senozhatsky , Richard Weinberger , Hans de Goede , Hugh Dickins , Andrew Morton , "Darrick J. Wong" Cc: Dave Chinner , Anthony Iliopoulos , v9fs@lists.linux.dev, linux-kernel@vger.kernel.org, linux-afs@lists.infradead.org, linux-btrfs@vger.kernel.org, ceph-devel@vger.kernel.org, codalist@coda.cs.cmu.edu, ecryptfs@vger.kernel.org, linux-erofs@lists.ozlabs.org, linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, cluster-devel@redhat.com, linux-nfs@vger.kernel.org, ntfs3@lists.linux.dev, ocfs2-devel@lists.linux.dev, devel@lists.orangefs.org, linux-cifs@vger.kernel.org, samba-technical@lists.samba.org, linux-mtd@lists.infradead.org, linux-mm@kvack.org, linux-xfs@vger.kernel.org, Jeff Layton X-Mailer: b4 0.12.3 X-Developer-Signature: v=1; a=openpgp-sha256; l=28167; i=jlayton@kernel.org; h=from:subject:message-id; bh=Y79V8fW1dayS/ZW42NSnZx7OZABNpnqUWyYbPZtv6GQ=; b=owEBbQKS/ZANAwAIAQAOaEEZVoIVAcsmYgBkv+MjPDJR1glV+HPp3MYYxTa7azQGh+e2/SqT0 vJ5DgZvg8uJAjMEAAEIAB0WIQRLwNeyRHGyoYTq9dMADmhBGVaCFQUCZL/jIwAKCRAADmhBGVaC FZ9oEACT3sd9QiiKu2lpIZmi/vth/Tw9fHpcFk2ExWjpr1sx6kJr316Sz5fldcRJ2TvXBy61WtR 4tQTfHmIte7PfuFbceqlNKgAdKn+Ofsm6ELi5Pyl8d3SAstHfLn7fm7SLKWioOydtn+iE5ewmmR 9tb2dV6e45TpaS7ukuiNBAZJkws0uug6zEkGhFO6blReL3Osdw8Ons3OrSz8Xs2FMFlLHQEDu3C b9LzLzO2DNQFGheOepS3TWbv6bu3kTcH1KpA36R0GuSo0fOeYqwi1jsQP36Z8EHYLZtJsg9yUQQ GGS+nL4a+hjwP+DlPWhe4aNOD+Z1D1bD5dic5VoFll5Lz5cmiUM35qDsd2naofqXe/N9xKHRyrI r4LYXzAifMa54eCzREs3NuJR2/rRkXu3ybSKJgwkfizPzJHEDYD4As0ydyL4QGAaRUPlsQPMXS9 E/8c9F+n4NihXEYWkoUUPe7kS5Ic9UtNpUVSb1iBUUttIkcJahaj449dq1795SkkGJiAir18Tc0 /jhnvgQTUydi4SjmIHyJjdmx+f5ssv+5xWORU4A3sI4vAO3FpEDv6OYTBjz/p4uDI7acwYoRZ0y HVR9MbEqSJXptX5ogwQzEDR9i0nWI0T4rxjayHPGYOg0TI83Xo8MMMGYbj1Yml4bbtPWjKbRq/f vlz9bjxZM1H2ueQ== X-Developer-Key: i=jlayton@kernel.org; a=openpgp; fpr=4BC0D7B24471B2A184EAF5D3000E684119568215 Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org generic_fillattr just fills in the entire stat struct indiscriminately today, copying data from the inode. There is at least one attribute (STATX_CHANGE_COOKIE) that can have side effects when it is reported, and we're looking at adding more with the addition of multigrain timestamps. Add a request_mask argument to generic_fillattr and have most callers just pass in the value that is passed to getattr. Have other callers (e.g. ksmbd) just pass in STATX_BASIC_STATS. Also move the setting of STATX_CHANGE_COOKIE into generic_fillattr. Signed-off-by: Jeff Layton Reviewed-by: Xiubo Li Acked-by: Joseph Qi Reviewed-by: Jan Kara Reviewed-by: Paulo Alcantara (SUSE) --- fs/9p/vfs_inode.c | 4 ++-- fs/9p/vfs_inode_dotl.c | 4 ++-- fs/afs/inode.c | 2 +- fs/btrfs/inode.c | 2 +- fs/ceph/inode.c | 2 +- fs/coda/inode.c | 3 ++- fs/ecryptfs/inode.c | 5 +++-- fs/erofs/inode.c | 2 +- fs/exfat/file.c | 2 +- fs/ext2/inode.c | 2 +- fs/ext4/inode.c | 2 +- fs/f2fs/file.c | 2 +- fs/fat/file.c | 2 +- fs/fuse/dir.c | 2 +- fs/gfs2/inode.c | 2 +- fs/hfsplus/inode.c | 2 +- fs/kernfs/inode.c | 2 +- fs/libfs.c | 4 ++-- fs/minix/inode.c | 2 +- fs/nfs/inode.c | 2 +- fs/nfs/namespace.c | 3 ++- fs/ntfs3/file.c | 2 +- fs/ocfs2/file.c | 2 +- fs/orangefs/inode.c | 2 +- fs/proc/base.c | 4 ++-- fs/proc/fd.c | 2 +- fs/proc/generic.c | 2 +- fs/proc/proc_net.c | 2 +- fs/proc/proc_sysctl.c | 2 +- fs/proc/root.c | 3 ++- fs/smb/client/inode.c | 2 +- fs/smb/server/smb2pdu.c | 22 +++++++++++----------- fs/smb/server/vfs.c | 3 ++- fs/stat.c | 18 ++++++++++-------- fs/sysv/itree.c | 3 ++- fs/ubifs/dir.c | 2 +- fs/udf/symlink.c | 2 +- fs/vboxsf/utils.c | 2 +- include/linux/fs.h | 2 +- mm/shmem.c | 2 +- 40 files changed, 70 insertions(+), 62 deletions(-) diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c index 16d85e6033a3..d24d1f20e922 100644 --- a/fs/9p/vfs_inode.c +++ b/fs/9p/vfs_inode.c @@ -1016,7 +1016,7 @@ v9fs_vfs_getattr(struct mnt_idmap *idmap, const struct path *path, p9_debug(P9_DEBUG_VFS, "dentry: %p\n", dentry); v9ses = v9fs_dentry2v9ses(dentry); if (v9ses->cache & (CACHE_META|CACHE_LOOSE)) { - generic_fillattr(&nop_mnt_idmap, inode, stat); + generic_fillattr(&nop_mnt_idmap, request_mask, inode, stat); return 0; } else if (v9ses->cache & CACHE_WRITEBACK) { if (S_ISREG(inode->i_mode)) { @@ -1037,7 +1037,7 @@ v9fs_vfs_getattr(struct mnt_idmap *idmap, const struct path *path, return PTR_ERR(st); v9fs_stat2inode(st, d_inode(dentry), dentry->d_sb, 0); - generic_fillattr(&nop_mnt_idmap, d_inode(dentry), stat); + generic_fillattr(&nop_mnt_idmap, request_mask, d_inode(dentry), stat); p9stat_free(st); kfree(st); diff --git a/fs/9p/vfs_inode_dotl.c b/fs/9p/vfs_inode_dotl.c index 464ea73d1bf8..8e8d5d2a13d8 100644 --- a/fs/9p/vfs_inode_dotl.c +++ b/fs/9p/vfs_inode_dotl.c @@ -451,7 +451,7 @@ v9fs_vfs_getattr_dotl(struct mnt_idmap *idmap, p9_debug(P9_DEBUG_VFS, "dentry: %p\n", dentry); v9ses = v9fs_dentry2v9ses(dentry); if (v9ses->cache & (CACHE_META|CACHE_LOOSE)) { - generic_fillattr(&nop_mnt_idmap, inode, stat); + generic_fillattr(&nop_mnt_idmap, request_mask, inode, stat); return 0; } else if (v9ses->cache) { if (S_ISREG(inode->i_mode)) { @@ -476,7 +476,7 @@ v9fs_vfs_getattr_dotl(struct mnt_idmap *idmap, return PTR_ERR(st); v9fs_stat2inode_dotl(st, d_inode(dentry), 0); - generic_fillattr(&nop_mnt_idmap, d_inode(dentry), stat); + generic_fillattr(&nop_mnt_idmap, request_mask, d_inode(dentry), stat); /* Change block size to what the server returned */ stat->blksize = st->st_blksize; diff --git a/fs/afs/inode.c b/fs/afs/inode.c index 6b636f43f548..1c794a1896aa 100644 --- a/fs/afs/inode.c +++ b/fs/afs/inode.c @@ -773,7 +773,7 @@ int afs_getattr(struct mnt_idmap *idmap, const struct path *path, do { read_seqbegin_or_lock(&vnode->cb_lock, &seq); - generic_fillattr(&nop_mnt_idmap, inode, stat); + generic_fillattr(&nop_mnt_idmap, request_mask, inode, stat); if (test_bit(AFS_VNODE_SILLY_DELETED, &vnode->flags) && stat->nlink > 0) stat->nlink -= 1; diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index bcccd551f547..7346059209aa 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -8773,7 +8773,7 @@ static int btrfs_getattr(struct mnt_idmap *idmap, STATX_ATTR_IMMUTABLE | STATX_ATTR_NODUMP); - generic_fillattr(idmap, inode, stat); + generic_fillattr(idmap, request_mask, inode, stat); stat->dev = BTRFS_I(inode)->root->anon_dev; spin_lock(&BTRFS_I(inode)->lock); diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c index 5f6e93714f5a..fd05d68e2990 100644 --- a/fs/ceph/inode.c +++ b/fs/ceph/inode.c @@ -2467,7 +2467,7 @@ int ceph_getattr(struct mnt_idmap *idmap, const struct path *path, return err; } - generic_fillattr(&nop_mnt_idmap, inode, stat); + generic_fillattr(&nop_mnt_idmap, request_mask, inode, stat); stat->ino = ceph_present_inode(inode); /* diff --git a/fs/coda/inode.c b/fs/coda/inode.c index 3e64679c1620..0c7c2528791e 100644 --- a/fs/coda/inode.c +++ b/fs/coda/inode.c @@ -256,7 +256,8 @@ int coda_getattr(struct mnt_idmap *idmap, const struct path *path, { int err = coda_revalidate_inode(d_inode(path->dentry)); if (!err) - generic_fillattr(&nop_mnt_idmap, d_inode(path->dentry), stat); + generic_fillattr(&nop_mnt_idmap, request_mask, + d_inode(path->dentry), stat); return err; } diff --git a/fs/ecryptfs/inode.c b/fs/ecryptfs/inode.c index b491bb239c8f..992d9c7e64ae 100644 --- a/fs/ecryptfs/inode.c +++ b/fs/ecryptfs/inode.c @@ -982,7 +982,7 @@ static int ecryptfs_getattr_link(struct mnt_idmap *idmap, mount_crypt_stat = &ecryptfs_superblock_to_private( dentry->d_sb)->mount_crypt_stat; - generic_fillattr(&nop_mnt_idmap, d_inode(dentry), stat); + generic_fillattr(&nop_mnt_idmap, request_mask, d_inode(dentry), stat); if (mount_crypt_stat->flags & ECRYPTFS_GLOBAL_ENCRYPT_FILENAMES) { char *target; size_t targetsiz; @@ -1011,7 +1011,8 @@ static int ecryptfs_getattr(struct mnt_idmap *idmap, if (!rc) { fsstack_copy_attr_all(d_inode(dentry), ecryptfs_inode_to_lower(d_inode(dentry))); - generic_fillattr(&nop_mnt_idmap, d_inode(dentry), stat); + generic_fillattr(&nop_mnt_idmap, request_mask, + d_inode(dentry), stat); stat->blocks = lower_stat.blocks; } return rc; diff --git a/fs/erofs/inode.c b/fs/erofs/inode.c index c9bbdf7c34db..edc8ec7581b8 100644 --- a/fs/erofs/inode.c +++ b/fs/erofs/inode.c @@ -369,7 +369,7 @@ int erofs_getattr(struct mnt_idmap *idmap, const struct path *path, stat->attributes_mask |= (STATX_ATTR_COMPRESSED | STATX_ATTR_IMMUTABLE); - generic_fillattr(idmap, inode, stat); + generic_fillattr(idmap, request_mask, inode, stat); return 0; } diff --git a/fs/exfat/file.c b/fs/exfat/file.c index f40ecfeee3a4..32395ef686a2 100644 --- a/fs/exfat/file.c +++ b/fs/exfat/file.c @@ -232,7 +232,7 @@ int exfat_getattr(struct mnt_idmap *idmap, const struct path *path, struct inode *inode = d_backing_inode(path->dentry); struct exfat_inode_info *ei = EXFAT_I(inode); - generic_fillattr(&nop_mnt_idmap, inode, stat); + generic_fillattr(&nop_mnt_idmap, request_mask, inode, stat); exfat_truncate_atime(&stat->atime); stat->result_mask |= STATX_BTIME; stat->btime.tv_sec = ei->i_crtime.tv_sec; diff --git a/fs/ext2/inode.c b/fs/ext2/inode.c index 1259995977d2..acbab27fe957 100644 --- a/fs/ext2/inode.c +++ b/fs/ext2/inode.c @@ -1628,7 +1628,7 @@ int ext2_getattr(struct mnt_idmap *idmap, const struct path *path, STATX_ATTR_IMMUTABLE | STATX_ATTR_NODUMP); - generic_fillattr(&nop_mnt_idmap, inode, stat); + generic_fillattr(&nop_mnt_idmap, request_mask, inode, stat); return 0; } diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 86696b40c58f..6683076ecb2f 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -5535,7 +5535,7 @@ int ext4_getattr(struct mnt_idmap *idmap, const struct path *path, STATX_ATTR_NODUMP | STATX_ATTR_VERITY); - generic_fillattr(idmap, inode, stat); + generic_fillattr(idmap, request_mask, inode, stat); return 0; } diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index b018800223c4..35886a52edfb 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -882,7 +882,7 @@ int f2fs_getattr(struct mnt_idmap *idmap, const struct path *path, STATX_ATTR_NODUMP | STATX_ATTR_VERITY); - generic_fillattr(idmap, inode, stat); + generic_fillattr(idmap, request_mask, inode, stat); /* we need to show initial sectors used for inline_data/dentries */ if ((S_ISREG(inode->i_mode) && f2fs_has_inline_data(inode)) || diff --git a/fs/fat/file.c b/fs/fat/file.c index 456477946dd9..e887e9ab7472 100644 --- a/fs/fat/file.c +++ b/fs/fat/file.c @@ -401,7 +401,7 @@ int fat_getattr(struct mnt_idmap *idmap, const struct path *path, struct inode *inode = d_inode(path->dentry); struct msdos_sb_info *sbi = MSDOS_SB(inode->i_sb); - generic_fillattr(idmap, inode, stat); + generic_fillattr(idmap, request_mask, inode, stat); stat->blksize = sbi->cluster_size; if (sbi->options.nfs == FAT_NFS_NOSTALE_RO) { diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c index 672245ee0394..881524b9a55a 100644 --- a/fs/fuse/dir.c +++ b/fs/fuse/dir.c @@ -1222,7 +1222,7 @@ static int fuse_update_get_attr(struct inode *inode, struct file *file, forget_all_cached_acls(inode); err = fuse_do_getattr(inode, stat, file); } else if (stat) { - generic_fillattr(&nop_mnt_idmap, inode, stat); + generic_fillattr(&nop_mnt_idmap, request_mask, inode, stat); stat->mode = fi->orig_i_mode; stat->ino = fi->orig_ino; } diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c index 2ded6c813f20..200cabf3b393 100644 --- a/fs/gfs2/inode.c +++ b/fs/gfs2/inode.c @@ -2071,7 +2071,7 @@ static int gfs2_getattr(struct mnt_idmap *idmap, STATX_ATTR_IMMUTABLE | STATX_ATTR_NODUMP); - generic_fillattr(&nop_mnt_idmap, inode, stat); + generic_fillattr(&nop_mnt_idmap, request_mask, inode, stat); if (gfs2_holder_initialized(&gh)) gfs2_glock_dq_uninit(&gh); diff --git a/fs/hfsplus/inode.c b/fs/hfsplus/inode.c index 40c61ab4a918..c65c8c4b03dd 100644 --- a/fs/hfsplus/inode.c +++ b/fs/hfsplus/inode.c @@ -298,7 +298,7 @@ int hfsplus_getattr(struct mnt_idmap *idmap, const struct path *path, stat->attributes_mask |= STATX_ATTR_APPEND | STATX_ATTR_IMMUTABLE | STATX_ATTR_NODUMP; - generic_fillattr(&nop_mnt_idmap, inode, stat); + generic_fillattr(&nop_mnt_idmap, request_mask, inode, stat); return 0; } diff --git a/fs/kernfs/inode.c b/fs/kernfs/inode.c index 89a9b4dcf109..af37be68bf06 100644 --- a/fs/kernfs/inode.c +++ b/fs/kernfs/inode.c @@ -190,7 +190,7 @@ int kernfs_iop_getattr(struct mnt_idmap *idmap, down_read(&root->kernfs_iattr_rwsem); kernfs_refresh_inode(kn, inode); - generic_fillattr(&nop_mnt_idmap, inode, stat); + generic_fillattr(&nop_mnt_idmap, request_mask, inode, stat); up_read(&root->kernfs_iattr_rwsem); return 0; diff --git a/fs/libfs.c b/fs/libfs.c index b27260e0c14a..0a9f3c426548 100644 --- a/fs/libfs.c +++ b/fs/libfs.c @@ -33,7 +33,7 @@ int simple_getattr(struct mnt_idmap *idmap, const struct path *path, unsigned int query_flags) { struct inode *inode = d_inode(path->dentry); - generic_fillattr(&nop_mnt_idmap, inode, stat); + generic_fillattr(&nop_mnt_idmap, request_mask, inode, stat); stat->blocks = inode->i_mapping->nrpages << (PAGE_SHIFT - 9); return 0; } @@ -1585,7 +1585,7 @@ static int empty_dir_getattr(struct mnt_idmap *idmap, u32 request_mask, unsigned int query_flags) { struct inode *inode = d_inode(path->dentry); - generic_fillattr(&nop_mnt_idmap, inode, stat); + generic_fillattr(&nop_mnt_idmap, request_mask, inode, stat); return 0; } diff --git a/fs/minix/inode.c b/fs/minix/inode.c index 8a4fc9420b36..df575473c1cc 100644 --- a/fs/minix/inode.c +++ b/fs/minix/inode.c @@ -656,7 +656,7 @@ int minix_getattr(struct mnt_idmap *idmap, const struct path *path, struct super_block *sb = path->dentry->d_sb; struct inode *inode = d_inode(path->dentry); - generic_fillattr(&nop_mnt_idmap, inode, stat); + generic_fillattr(&nop_mnt_idmap, request_mask, inode, stat); if (INODE_VERSION(inode) == MINIX_V1) stat->blocks = (BLOCK_SIZE / 512) * V1_minix_blocks(stat->size, sb); else diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c index 1283fdfa4b0a..e21c073158e5 100644 --- a/fs/nfs/inode.c +++ b/fs/nfs/inode.c @@ -912,7 +912,7 @@ int nfs_getattr(struct mnt_idmap *idmap, const struct path *path, /* Only return attributes that were revalidated. */ stat->result_mask = nfs_get_valid_attrmask(inode) | request_mask; - generic_fillattr(&nop_mnt_idmap, inode, stat); + generic_fillattr(&nop_mnt_idmap, request_mask, inode, stat); stat->ino = nfs_compat_user_ino64(NFS_FILEID(inode)); stat->change_cookie = inode_peek_iversion_raw(inode); stat->attributes_mask |= STATX_ATTR_CHANGE_MONOTONIC; diff --git a/fs/nfs/namespace.c b/fs/nfs/namespace.c index 19d51ebf842c..e7494cdd957e 100644 --- a/fs/nfs/namespace.c +++ b/fs/nfs/namespace.c @@ -215,7 +215,8 @@ nfs_namespace_getattr(struct mnt_idmap *idmap, if (NFS_FH(d_inode(path->dentry))->size != 0) return nfs_getattr(idmap, path, stat, request_mask, query_flags); - generic_fillattr(&nop_mnt_idmap, d_inode(path->dentry), stat); + generic_fillattr(&nop_mnt_idmap, request_mask, d_inode(path->dentry), + stat); return 0; } diff --git a/fs/ntfs3/file.c b/fs/ntfs3/file.c index 12788601dc84..962f12ce6c0a 100644 --- a/fs/ntfs3/file.c +++ b/fs/ntfs3/file.c @@ -85,7 +85,7 @@ int ntfs_getattr(struct mnt_idmap *idmap, const struct path *path, stat->attributes_mask |= STATX_ATTR_COMPRESSED | STATX_ATTR_ENCRYPTED; - generic_fillattr(idmap, inode, stat); + generic_fillattr(idmap, request_mask, inode, stat); stat->result_mask |= STATX_BTIME; stat->btime = ni->i_crtime; diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c index 1b337ebce4df..8184499ae7a5 100644 --- a/fs/ocfs2/file.c +++ b/fs/ocfs2/file.c @@ -1319,7 +1319,7 @@ int ocfs2_getattr(struct mnt_idmap *idmap, const struct path *path, goto bail; } - generic_fillattr(&nop_mnt_idmap, inode, stat); + generic_fillattr(&nop_mnt_idmap, request_mask, inode, stat); /* * If there is inline data in the inode, the inode will normally not * have data blocks allocated (it may have an external xattr block). diff --git a/fs/orangefs/inode.c b/fs/orangefs/inode.c index 9014bbcc8031..a52c30e80f45 100644 --- a/fs/orangefs/inode.c +++ b/fs/orangefs/inode.c @@ -871,7 +871,7 @@ int orangefs_getattr(struct mnt_idmap *idmap, const struct path *path, ret = orangefs_inode_getattr(inode, request_mask & STATX_SIZE ? ORANGEFS_GETATTR_SIZE : 0); if (ret == 0) { - generic_fillattr(&nop_mnt_idmap, inode, stat); + generic_fillattr(&nop_mnt_idmap, request_mask, inode, stat); /* override block size reported to stat */ if (!(request_mask & STATX_SIZE)) diff --git a/fs/proc/base.c b/fs/proc/base.c index d8388fc0a362..2bf67a0e0bcc 100644 --- a/fs/proc/base.c +++ b/fs/proc/base.c @@ -1966,7 +1966,7 @@ int pid_getattr(struct mnt_idmap *idmap, const struct path *path, struct proc_fs_info *fs_info = proc_sb_info(inode->i_sb); struct task_struct *task; - generic_fillattr(&nop_mnt_idmap, inode, stat); + generic_fillattr(&nop_mnt_idmap, request_mask, inode, stat); stat->uid = GLOBAL_ROOT_UID; stat->gid = GLOBAL_ROOT_GID; @@ -3900,7 +3900,7 @@ static int proc_task_getattr(struct mnt_idmap *idmap, { struct inode *inode = d_inode(path->dentry); struct task_struct *p = get_proc_task(inode); - generic_fillattr(&nop_mnt_idmap, inode, stat); + generic_fillattr(&nop_mnt_idmap, request_mask, inode, stat); if (p) { stat->nlink += get_nr_threads(p); diff --git a/fs/proc/fd.c b/fs/proc/fd.c index b3140deebbbf..6276b3938842 100644 --- a/fs/proc/fd.c +++ b/fs/proc/fd.c @@ -352,7 +352,7 @@ static int proc_fd_getattr(struct mnt_idmap *idmap, struct inode *inode = d_inode(path->dentry); int rv = 0; - generic_fillattr(&nop_mnt_idmap, inode, stat); + generic_fillattr(&nop_mnt_idmap, request_mask, inode, stat); /* If it's a directory, put the number of open fds there */ if (S_ISDIR(inode->i_mode)) { diff --git a/fs/proc/generic.c b/fs/proc/generic.c index 42ae38ff6e7e..775ce0bcf08c 100644 --- a/fs/proc/generic.c +++ b/fs/proc/generic.c @@ -146,7 +146,7 @@ static int proc_getattr(struct mnt_idmap *idmap, } } - generic_fillattr(&nop_mnt_idmap, inode, stat); + generic_fillattr(&nop_mnt_idmap, request_mask, inode, stat); return 0; } diff --git a/fs/proc/proc_net.c b/fs/proc/proc_net.c index 78f9e6b469c0..2ba31b6d68c0 100644 --- a/fs/proc/proc_net.c +++ b/fs/proc/proc_net.c @@ -308,7 +308,7 @@ static int proc_tgid_net_getattr(struct mnt_idmap *idmap, net = get_proc_task_net(inode); - generic_fillattr(&nop_mnt_idmap, inode, stat); + generic_fillattr(&nop_mnt_idmap, request_mask, inode, stat); if (net != NULL) { stat->nlink = net->proc_net->nlink; diff --git a/fs/proc/proc_sysctl.c b/fs/proc/proc_sysctl.c index 6bc10e7e0ff7..bf06344a42cc 100644 --- a/fs/proc/proc_sysctl.c +++ b/fs/proc/proc_sysctl.c @@ -849,7 +849,7 @@ static int proc_sys_getattr(struct mnt_idmap *idmap, if (IS_ERR(head)) return PTR_ERR(head); - generic_fillattr(&nop_mnt_idmap, inode, stat); + generic_fillattr(&nop_mnt_idmap, request_mask, inode, stat); if (table) stat->mode = (stat->mode & S_IFMT) | table->mode; diff --git a/fs/proc/root.c b/fs/proc/root.c index a86e65a608da..9191248f2dac 100644 --- a/fs/proc/root.c +++ b/fs/proc/root.c @@ -314,7 +314,8 @@ static int proc_root_getattr(struct mnt_idmap *idmap, const struct path *path, struct kstat *stat, u32 request_mask, unsigned int query_flags) { - generic_fillattr(&nop_mnt_idmap, d_inode(path->dentry), stat); + generic_fillattr(&nop_mnt_idmap, request_mask, d_inode(path->dentry), + stat); stat->nlink = proc_root.nlink + nr_processes(); return 0; } diff --git a/fs/smb/client/inode.c b/fs/smb/client/inode.c index 218f03dd3f52..93fe43789d7a 100644 --- a/fs/smb/client/inode.c +++ b/fs/smb/client/inode.c @@ -2540,7 +2540,7 @@ int cifs_getattr(struct mnt_idmap *idmap, const struct path *path, return rc; } - generic_fillattr(&nop_mnt_idmap, inode, stat); + generic_fillattr(&nop_mnt_idmap, request_mask, inode, stat); stat->blksize = cifs_sb->ctx->bsize; stat->ino = CIFS_I(inode)->uniqueid; diff --git a/fs/smb/server/smb2pdu.c b/fs/smb/server/smb2pdu.c index f9099831c8ff..2a084d35233a 100644 --- a/fs/smb/server/smb2pdu.c +++ b/fs/smb/server/smb2pdu.c @@ -4391,8 +4391,8 @@ static int get_file_basic_info(struct smb2_query_info_rsp *rsp, } basic_info = (struct smb2_file_basic_info *)rsp->Buffer; - generic_fillattr(file_mnt_idmap(fp->filp), file_inode(fp->filp), - &stat); + generic_fillattr(file_mnt_idmap(fp->filp), STATX_BASIC_STATS, + file_inode(fp->filp), &stat); basic_info->CreationTime = cpu_to_le64(fp->create_time); time = ksmbd_UnixTimeToNT(stat.atime); basic_info->LastAccessTime = cpu_to_le64(time); @@ -4417,7 +4417,7 @@ static void get_file_standard_info(struct smb2_query_info_rsp *rsp, struct kstat stat; inode = file_inode(fp->filp); - generic_fillattr(file_mnt_idmap(fp->filp), inode, &stat); + generic_fillattr(file_mnt_idmap(fp->filp), STATX_BASIC_STATS, inode, &stat); sinfo = (struct smb2_file_standard_info *)rsp->Buffer; delete_pending = ksmbd_inode_pending_delete(fp); @@ -4471,7 +4471,7 @@ static int get_file_all_info(struct ksmbd_work *work, return PTR_ERR(filename); inode = file_inode(fp->filp); - generic_fillattr(file_mnt_idmap(fp->filp), inode, &stat); + generic_fillattr(file_mnt_idmap(fp->filp), STATX_BASIC_STATS, inode, &stat); ksmbd_debug(SMB, "filename = %s\n", filename); delete_pending = ksmbd_inode_pending_delete(fp); @@ -4548,8 +4548,8 @@ static void get_file_stream_info(struct ksmbd_work *work, int buf_free_len; struct smb2_query_info_req *req = ksmbd_req_buf_next(work); - generic_fillattr(file_mnt_idmap(fp->filp), file_inode(fp->filp), - &stat); + generic_fillattr(file_mnt_idmap(fp->filp), STATX_BASIC_STATS, + file_inode(fp->filp), &stat); file_info = (struct smb2_file_stream_info *)rsp->Buffer; buf_free_len = @@ -4639,8 +4639,8 @@ static void get_file_internal_info(struct smb2_query_info_rsp *rsp, struct smb2_file_internal_info *file_info; struct kstat stat; - generic_fillattr(file_mnt_idmap(fp->filp), file_inode(fp->filp), - &stat); + generic_fillattr(file_mnt_idmap(fp->filp), STATX_BASIC_STATS, + file_inode(fp->filp), &stat); file_info = (struct smb2_file_internal_info *)rsp->Buffer; file_info->IndexNumber = cpu_to_le64(stat.ino); rsp->OutputBufferLength = @@ -4665,7 +4665,7 @@ static int get_file_network_open_info(struct smb2_query_info_rsp *rsp, file_info = (struct smb2_file_ntwrk_info *)rsp->Buffer; inode = file_inode(fp->filp); - generic_fillattr(file_mnt_idmap(fp->filp), inode, &stat); + generic_fillattr(file_mnt_idmap(fp->filp), STATX_BASIC_STATS, inode, &stat); file_info->CreationTime = cpu_to_le64(fp->create_time); time = ksmbd_UnixTimeToNT(stat.atime); @@ -4726,8 +4726,8 @@ static void get_file_compression_info(struct smb2_query_info_rsp *rsp, struct smb2_file_comp_info *file_info; struct kstat stat; - generic_fillattr(file_mnt_idmap(fp->filp), file_inode(fp->filp), - &stat); + generic_fillattr(file_mnt_idmap(fp->filp), STATX_BASIC_STATS, + file_inode(fp->filp), &stat); file_info = (struct smb2_file_comp_info *)rsp->Buffer; file_info->CompressedFileSize = cpu_to_le64(stat.blocks << 9); diff --git a/fs/smb/server/vfs.c b/fs/smb/server/vfs.c index e35914457350..d0e94b73931a 100644 --- a/fs/smb/server/vfs.c +++ b/fs/smb/server/vfs.c @@ -1650,7 +1650,8 @@ int ksmbd_vfs_fill_dentry_attrs(struct ksmbd_work *work, u64 time; int rc; - generic_fillattr(idmap, d_inode(dentry), ksmbd_kstat->kstat); + generic_fillattr(idmap, STATX_BASIC_STATS, d_inode(dentry), + ksmbd_kstat->kstat); time = ksmbd_UnixTimeToNT(ksmbd_kstat->kstat->ctime); ksmbd_kstat->create_time = time; diff --git a/fs/stat.c b/fs/stat.c index 8c2b30af19f5..062f311b5386 100644 --- a/fs/stat.c +++ b/fs/stat.c @@ -29,6 +29,7 @@ /** * generic_fillattr - Fill in the basic attributes from the inode struct * @idmap: idmap of the mount the inode was found from + * @req_mask statx request_mask * @inode: Inode to use as the source * @stat: Where to fill in the attributes * @@ -42,8 +43,8 @@ * uid and gid filds. On non-idmapped mounts or if permission checking is to be * performed on the raw inode simply passs @nop_mnt_idmap. */ -void generic_fillattr(struct mnt_idmap *idmap, struct inode *inode, - struct kstat *stat) +void generic_fillattr(struct mnt_idmap *idmap, u32 request_mask, + struct inode *inode, struct kstat *stat) { vfsuid_t vfsuid = i_uid_into_vfsuid(idmap, inode); vfsgid_t vfsgid = i_gid_into_vfsgid(idmap, inode); @@ -61,6 +62,12 @@ void generic_fillattr(struct mnt_idmap *idmap, struct inode *inode, stat->ctime = inode_get_ctime(inode); stat->blksize = i_blocksize(inode); stat->blocks = inode->i_blocks; + + if ((request_mask & STATX_CHANGE_COOKIE) && IS_I_VERSION(inode)) { + stat->result_mask |= STATX_CHANGE_COOKIE; + stat->change_cookie = inode_query_iversion(inode); + } + } EXPORT_SYMBOL(generic_fillattr); @@ -123,17 +130,12 @@ int vfs_getattr_nosec(const struct path *path, struct kstat *stat, stat->attributes_mask |= (STATX_ATTR_AUTOMOUNT | STATX_ATTR_DAX); - if ((request_mask & STATX_CHANGE_COOKIE) && IS_I_VERSION(inode)) { - stat->result_mask |= STATX_CHANGE_COOKIE; - stat->change_cookie = inode_query_iversion(inode); - } - idmap = mnt_idmap(path->mnt); if (inode->i_op->getattr) return inode->i_op->getattr(idmap, path, stat, request_mask, query_flags); - generic_fillattr(idmap, inode, stat); + generic_fillattr(idmap, request_mask, inode, stat); return 0; } EXPORT_SYMBOL(vfs_getattr_nosec); diff --git a/fs/sysv/itree.c b/fs/sysv/itree.c index dba6a2ef26f1..edb94e55de8e 100644 --- a/fs/sysv/itree.c +++ b/fs/sysv/itree.c @@ -449,7 +449,8 @@ int sysv_getattr(struct mnt_idmap *idmap, const struct path *path, struct kstat *stat, u32 request_mask, unsigned int flags) { struct super_block *s = path->dentry->d_sb; - generic_fillattr(&nop_mnt_idmap, d_inode(path->dentry), stat); + generic_fillattr(&nop_mnt_idmap, request_mask, d_inode(path->dentry), + stat); stat->blocks = (s->s_blocksize / 512) * sysv_nblocks(s, stat->size); stat->blksize = s->s_blocksize; return 0; diff --git a/fs/ubifs/dir.c b/fs/ubifs/dir.c index 3a1ba8ba308a..2f48c58d47cd 100644 --- a/fs/ubifs/dir.c +++ b/fs/ubifs/dir.c @@ -1654,7 +1654,7 @@ int ubifs_getattr(struct mnt_idmap *idmap, const struct path *path, STATX_ATTR_ENCRYPTED | STATX_ATTR_IMMUTABLE); - generic_fillattr(&nop_mnt_idmap, inode, stat); + generic_fillattr(&nop_mnt_idmap, request_mask, inode, stat); stat->blksize = UBIFS_BLOCK_SIZE; stat->size = ui->ui_size; diff --git a/fs/udf/symlink.c b/fs/udf/symlink.c index 779b5c2c75f6..f7eaf7b14594 100644 --- a/fs/udf/symlink.c +++ b/fs/udf/symlink.c @@ -149,7 +149,7 @@ static int udf_symlink_getattr(struct mnt_idmap *idmap, struct inode *inode = d_backing_inode(dentry); struct page *page; - generic_fillattr(&nop_mnt_idmap, inode, stat); + generic_fillattr(&nop_mnt_idmap, request_mask, inode, stat); page = read_mapping_page(inode->i_mapping, 0, NULL); if (IS_ERR(page)) return PTR_ERR(page); diff --git a/fs/vboxsf/utils.c b/fs/vboxsf/utils.c index 576b91d571c5..83f20dd15522 100644 --- a/fs/vboxsf/utils.c +++ b/fs/vboxsf/utils.c @@ -252,7 +252,7 @@ int vboxsf_getattr(struct mnt_idmap *idmap, const struct path *path, if (err) return err; - generic_fillattr(&nop_mnt_idmap, d_inode(dentry), kstat); + generic_fillattr(&nop_mnt_idmap, request_mask, d_inode(dentry), kstat); return 0; } diff --git a/include/linux/fs.h b/include/linux/fs.h index 39076ea6a360..42d1434cc427 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2919,7 +2919,7 @@ extern void page_put_link(void *); extern int page_symlink(struct inode *inode, const char *symname, int len); extern const struct inode_operations page_symlink_inode_operations; extern void kfree_link(void *); -void generic_fillattr(struct mnt_idmap *, struct inode *, struct kstat *); +void generic_fillattr(struct mnt_idmap *, u32, struct inode *, struct kstat *); void generic_fill_statx_attr(struct inode *inode, struct kstat *stat); extern int vfs_getattr_nosec(const struct path *, struct kstat *, u32, unsigned int); extern int vfs_getattr(const struct path *, struct kstat *, u32, unsigned int); diff --git a/mm/shmem.c b/mm/shmem.c index 310b0544eae3..b154af49d2df 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -1073,7 +1073,7 @@ static int shmem_getattr(struct mnt_idmap *idmap, stat->attributes_mask |= (STATX_ATTR_APPEND | STATX_ATTR_IMMUTABLE | STATX_ATTR_NODUMP); - generic_fillattr(idmap, inode, stat); + generic_fillattr(idmap, request_mask, inode, stat); if (shmem_is_huge(inode, 0, false, NULL, 0)) stat->blksize = HPAGE_PMD_SIZE; From patchwork Tue Jul 25 14:58:15 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeff Layton X-Patchwork-Id: 13326666 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 B9E0FC04A6A for ; Tue, 25 Jul 2023 14:59:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232155AbjGYO7f (ORCPT ); Tue, 25 Jul 2023 10:59:35 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60164 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230233AbjGYO7O (ORCPT ); Tue, 25 Jul 2023 10:59:14 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A7078213A; Tue, 25 Jul 2023 07:59:05 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id CE34761791; Tue, 25 Jul 2023 14:59:04 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id AB08BC43397; Tue, 25 Jul 2023 14:58:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1690297144; bh=Dy0ObexSdjvGFnE5GNrBxiftdRymvhQ5lbJx72BKffY=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=qdYokfMA4QKfHu9mwDdP9cin2WAZSJg7MEOlbruvDZQXThqVq7lU4FHwj6gxD4UeH 33Uc2hHBntNMdcleDgLvPanmZKdUloyby1W6esSo2zWhV8V/EB/YWa2mwrqvzzPoyt Alf7k+U1aUrA3+q5EXL/vAv/aEddkkpz941fexX8cJC8EIKU3zEjMCFW6wCEvjuLyh 6h7ryYK5/sX53gfUPCYHFmYyjdHMD5Ru7LiSsNJI32feA3ycSj0Z6L9iVRlEV0Znz/ aEWF36Zm9FmA8Ai57oX4OdA1S9dj9BAjccRvR9ROgooXb9usoAzubaQP95Ih7TMH3c zAvbwnAiLBggg== From: Jeff Layton Date: Tue, 25 Jul 2023 10:58:15 -0400 Subject: [PATCH v6 2/7] fs: add infrastructure for multigrain timestamps MIME-Version: 1.0 Message-Id: <20230725-mgctime-v6-2-a794c2b7abca@kernel.org> References: <20230725-mgctime-v6-0-a794c2b7abca@kernel.org> In-Reply-To: <20230725-mgctime-v6-0-a794c2b7abca@kernel.org> To: Eric Van Hensbergen , Latchesar Ionkov , Dominique Martinet , Christian Schoenebeck , David Howells , Marc Dionne , Chris Mason , Josef Bacik , David Sterba , Xiubo Li , Ilya Dryomov , Jan Harkes , coda@cs.cmu.edu, Tyler Hicks , Gao Xiang , Chao Yu , Yue Hu , Jeffle Xu , Namjae Jeon , Sungjong Seo , Jan Kara , Theodore Ts'o , Andreas Dilger , Jaegeuk Kim , OGAWA Hirofumi , Miklos Szeredi , Bob Peterson , Andreas Gruenbacher , Greg Kroah-Hartman , Tejun Heo , Alexander Viro , Christian Brauner , Trond Myklebust , Anna Schumaker , Konstantin Komarov , Mark Fasheh , Joel Becker , Joseph Qi , Mike Marshall , Martin Brandenburg , Luis Chamberlain , Kees Cook , Iurii Zaikin , Steve French , Paulo Alcantara , Ronnie Sahlberg , Shyam Prasad N , Tom Talpey , Sergey Senozhatsky , Richard Weinberger , Hans de Goede , Hugh Dickins , Andrew Morton , "Darrick J. Wong" Cc: Dave Chinner , Anthony Iliopoulos , v9fs@lists.linux.dev, linux-kernel@vger.kernel.org, linux-afs@lists.infradead.org, linux-btrfs@vger.kernel.org, ceph-devel@vger.kernel.org, codalist@coda.cs.cmu.edu, ecryptfs@vger.kernel.org, linux-erofs@lists.ozlabs.org, linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, cluster-devel@redhat.com, linux-nfs@vger.kernel.org, ntfs3@lists.linux.dev, ocfs2-devel@lists.linux.dev, devel@lists.orangefs.org, linux-cifs@vger.kernel.org, samba-technical@lists.samba.org, linux-mtd@lists.infradead.org, linux-mm@kvack.org, linux-xfs@vger.kernel.org, Jeff Layton X-Mailer: b4 0.12.3 X-Developer-Signature: v=1; a=openpgp-sha256; l=12090; i=jlayton@kernel.org; h=from:subject:message-id; bh=Dy0ObexSdjvGFnE5GNrBxiftdRymvhQ5lbJx72BKffY=; b=owEBbQKS/ZANAwAIAQAOaEEZVoIVAcsmYgBkv+MjVTwfdsnV4twOyH0iWjsVoESHbp0vhytPL GrDh+y6ZiOJAjMEAAEIAB0WIQRLwNeyRHGyoYTq9dMADmhBGVaCFQUCZL/jIwAKCRAADmhBGVaC FTNWD/wOwB3Acf+3+5zLb6ZlnP79gAzEXCxidATJ8q/NJGW16j946gZIcAK8NjPd/R1T7gotBa+ 4Uxfw0cUomvt3MXGXlElAe4aMrHGO8NfOBEsZFeUukqvDi4MGmn8YEBUigljCqlDCUxVVtfa5vU 6FJGsjDlT30KWznEJoutQ4RHXaDhp6APWQSL2JgfjP1LJXgxpfowIxThY2C6ywzOcF9QECwXEV7 9o5EY1k8nNnSi/PK3tSmJkeXODIUnZL9A9PkNqxJTR1AEaF4eI06fXVMFZ1Ed2pI1Y4Y0g9WqIs b1yH0hxm3CqAsrcKCOzApRJxKVPlCjRo6ub8vSt3T4IY22wUSl/4aIBiJ+ftYOxZtsnqOQ9Sx7s 9m9SutRREFWNOaxIaYGcC2TPlKtwsDpr/iVad5xhmiGoGBQV424QWjjjVflrHvaTTOH06HAPlqq xwshjUcU6yZUOFGRUgSODWXVurNgU48Nf5tKYu47ox/GFPpCmxscXPIZEtj8Wu1EWfxKu9aJdJm IEg33PdxoBK0IVyKc7dCXu+fsQ8cBOMj+Wx0fKRxB0UWzcvqF1LuD0MWFRAx4DAEWk6jbGGzArQ n9TtyEkGUqWVDG7je8cSV7J1mHsi082vKIRiZ0/+vrUfrjAcqIEn5uFjFtiQIpX4tO42lKgm4M1 HH+uxOkorkJw5hQ== X-Developer-Key: i=jlayton@kernel.org; a=openpgp; fpr=4BC0D7B24471B2A184EAF5D3000E684119568215 Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org The VFS always uses coarse-grained timestamps when updating the ctime and mtime after a change. This has the benefit of allowing filesystems to optimize away a lot metadata updates, down to around 1 per jiffy, even when a file is under heavy writes. Unfortunately, this has always been an issue when we're exporting via NFSv3, which relies on timestamps to validate caches. A lot of changes can happen in a jiffy, so timestamps aren't sufficient to help the client decide to invalidate the cache. Even with NFSv4, a lot of exported filesystems don't properly support a change attribute and are subject to the same problems with timestamp granularity. Other applications have similar issues with timestamps (e.g backup applications). If we were to always use fine-grained timestamps, that would improve the situation, but that becomes rather expensive, as the underlying filesystem would have to log a lot more metadata updates. What we need is a way to only use fine-grained timestamps when they are being actively queried. POSIX generally mandates that when the the mtime changes, the ctime must also change. The kernel always stores normalized ctime values, so only the first 30 bits of the tv_nsec field are ever used. Use the 31st bit of the ctime tv_nsec field to indicate that something has queried the inode for the mtime or ctime. When this flag is set, on the next mtime or ctime update, the kernel will fetch a fine-grained timestamp instead of the usual coarse-grained one. Filesytems can opt into this behavior by setting the FS_MGTIME flag in the fstype. Filesystems that don't set this flag will continue to use coarse-grained timestamps. Later patches will convert individual filesystems to use the new infrastructure. Signed-off-by: Jeff Layton --- fs/inode.c | 98 ++++++++++++++++++++++++++++++++++++++---------------- fs/stat.c | 41 +++++++++++++++++++++-- include/linux/fs.h | 45 +++++++++++++++++++++++-- 3 files changed, 151 insertions(+), 33 deletions(-) diff --git a/fs/inode.c b/fs/inode.c index d4ab92233062..369621e7faf5 100644 --- a/fs/inode.c +++ b/fs/inode.c @@ -1919,6 +1919,21 @@ int inode_update_time(struct inode *inode, struct timespec64 *time, int flags) } EXPORT_SYMBOL(inode_update_time); +/** + * current_coarse_time - Return FS time + * @inode: inode. + * + * Return the current coarse-grained time truncated to the time + * granularity supported by the fs. + */ +static struct timespec64 current_coarse_time(struct inode *inode) +{ + struct timespec64 now; + + ktime_get_coarse_real_ts64(&now); + return timestamp_truncate(now, inode); +} + /** * atime_needs_update - update the access time * @path: the &struct path to update @@ -1952,7 +1967,7 @@ bool atime_needs_update(const struct path *path, struct inode *inode) if ((mnt->mnt_flags & MNT_NODIRATIME) && S_ISDIR(inode->i_mode)) return false; - now = current_time(inode); + now = current_coarse_time(inode); if (!relatime_need_update(mnt, inode, now)) return false; @@ -1986,7 +2001,7 @@ void touch_atime(const struct path *path) * We may also fail on filesystems that have the ability to make parts * of the fs read only, e.g. subvolumes in Btrfs. */ - now = current_time(inode); + now = current_coarse_time(inode); inode_update_time(inode, &now, S_ATIME); __mnt_drop_write(mnt); skip_update: @@ -2072,6 +2087,56 @@ int file_remove_privs(struct file *file) } EXPORT_SYMBOL(file_remove_privs); +/** + * current_mgtime - Return FS time (possibly fine-grained) + * @inode: inode. + * + * Return the current time truncated to the time granularity supported by + * the fs, as suitable for a ctime/mtime change. If the ctime is flagged + * as having been QUERIED, get a fine-grained timestamp. + */ +static struct timespec64 current_mgtime(struct inode *inode) +{ + struct timespec64 now; + atomic_long_t *pnsec = (atomic_long_t *)&inode->__i_ctime.tv_nsec; + long nsec = atomic_long_read(pnsec); + + if (nsec & I_CTIME_QUERIED) { + ktime_get_real_ts64(&now); + } else { + struct timespec64 ctime; + + ktime_get_coarse_real_ts64(&now); + + /* + * If we've recently fetched a fine-grained timestamp + * then the coarse-grained one may still be earlier than the + * existing one. Just keep the existing ctime if so. + */ + ctime = inode_get_ctime(inode); + if (timespec64_compare(&ctime, &now) > 0) + now = ctime; + } + + return timestamp_truncate(now, inode); +} + +/** + * current_time - Return timestamp suitable for ctime update + * @inode: inode to eventually be updated + * + * Return the current time, which is usually coarse-grained but may be fine + * grained if the filesystem uses multigrain timestamps and the existing + * ctime was queried since the last update. + */ +struct timespec64 current_time(struct inode *inode) +{ + if (is_mgtime(inode)) + return current_mgtime(inode); + return current_coarse_time(inode); +} +EXPORT_SYMBOL(current_time); + static int inode_needs_update_time(struct inode *inode, struct timespec64 *now) { int sync_it = 0; @@ -2480,37 +2545,12 @@ struct timespec64 timestamp_truncate(struct timespec64 t, struct inode *inode) } EXPORT_SYMBOL(timestamp_truncate); -/** - * current_time - Return FS time - * @inode: inode. - * - * Return the current time truncated to the time granularity supported by - * the fs. - * - * Note that inode and inode->sb cannot be NULL. - * Otherwise, the function warns and returns time without truncation. - */ -struct timespec64 current_time(struct inode *inode) -{ - struct timespec64 now; - - ktime_get_coarse_real_ts64(&now); - - if (unlikely(!inode->i_sb)) { - WARN(1, "current_time() called with uninitialized super_block in the inode"); - return now; - } - - return timestamp_truncate(now, inode); -} -EXPORT_SYMBOL(current_time); - /** * inode_set_ctime_current - set the ctime to current_time * @inode: inode * - * Set the inode->i_ctime to the current value for the inode. Returns - * the current value that was assigned to i_ctime. + * Set the inode->__i_ctime to the current value for the inode. Returns + * the current value that was assigned to __i_ctime. */ struct timespec64 inode_set_ctime_current(struct inode *inode) { diff --git a/fs/stat.c b/fs/stat.c index 062f311b5386..51effd1c2bc2 100644 --- a/fs/stat.c +++ b/fs/stat.c @@ -26,6 +26,37 @@ #include "internal.h" #include "mount.h" +/** + * fill_mg_cmtime - Fill in the mtime and ctime and flag ctime as QUERIED + * @request_mask: STATX_* values requested + * @inode: inode from which to grab the c/mtime + * @stat: where to store the resulting values + * + * Given @inode, grab the ctime and mtime out if it and store the result + * in @stat. When fetching the value, flag it as queried so the next write + * will use a fine-grained timestamp. + */ +void fill_mg_cmtime(u32 request_mask, struct inode *inode, struct kstat *stat) +{ + atomic_long_t *pnsec = (atomic_long_t *)&inode->__i_ctime.tv_nsec; + + /* If neither time was requested, then don't report them */ + if (!(request_mask & (STATX_CTIME|STATX_MTIME))) { + stat->result_mask &= ~(STATX_CTIME|STATX_MTIME); + return; + } + + stat->mtime = inode->i_mtime; + stat->ctime.tv_sec = inode->__i_ctime.tv_sec; + /* + * Atomically set the QUERIED flag and fetch the new value with + * the flag masked off. + */ + stat->ctime.tv_nsec = atomic_long_fetch_or(I_CTIME_QUERIED, pnsec) & + ~I_CTIME_QUERIED; +} +EXPORT_SYMBOL(fill_mg_cmtime); + /** * generic_fillattr - Fill in the basic attributes from the inode struct * @idmap: idmap of the mount the inode was found from @@ -58,8 +89,14 @@ void generic_fillattr(struct mnt_idmap *idmap, u32 request_mask, stat->rdev = inode->i_rdev; stat->size = i_size_read(inode); stat->atime = inode->i_atime; - stat->mtime = inode->i_mtime; - stat->ctime = inode_get_ctime(inode); + + if (is_mgtime(inode)) { + fill_mg_cmtime(request_mask, inode, stat); + } else { + stat->mtime = inode->i_mtime; + stat->ctime = inode_get_ctime(inode); + } + stat->blksize = i_blocksize(inode); stat->blocks = inode->i_blocks; diff --git a/include/linux/fs.h b/include/linux/fs.h index 42d1434cc427..a0bdbefbf293 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1477,15 +1477,43 @@ static inline bool fsuidgid_has_mapping(struct super_block *sb, struct timespec64 current_time(struct inode *inode); struct timespec64 inode_set_ctime_current(struct inode *inode); +/* + * Multigrain timestamps + * + * Conditionally use fine-grained ctime and mtime timestamps when there + * are users actively observing them via getattr. The primary use-case + * for this is NFS clients that use the ctime to distinguish between + * different states of the file, and that are often fooled by multiple + * operations that occur in the same coarse-grained timer tick. + * + * The kernel always keeps normalized struct timespec64 values in the ctime, + * which means that only the first 30 bits of the value are used. Use the + * 31st bit of the ctime's tv_nsec field as a flag to indicate that the value + * has been queried since it was last updated. + */ +#define I_CTIME_QUERIED (1L<<30) + /** * inode_get_ctime - fetch the current ctime from the inode * @inode: inode from which to fetch ctime * - * Grab the current ctime from the inode and return it. + * Grab the current ctime tv_nsec field from the inode, mask off the + * I_CTIME_QUERIED flag and return it. This is mostly intended for use by + * internal consumers of the ctime that aren't concerned with ensuring a + * fine-grained update on the next change (e.g. when preparing to store + * the value in the backing store for later retrieval). + * + * This is safe to call regardless of whether the underlying filesystem + * is using multigrain timestamps. */ static inline struct timespec64 inode_get_ctime(const struct inode *inode) { - return inode->__i_ctime; + struct timespec64 ctime; + + ctime.tv_sec = inode->__i_ctime.tv_sec; + ctime.tv_nsec = inode->__i_ctime.tv_nsec & ~I_CTIME_QUERIED; + + return ctime; } /** @@ -2261,6 +2289,7 @@ struct file_system_type { #define FS_USERNS_MOUNT 8 /* Can be mounted by userns root */ #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_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; @@ -2284,6 +2313,17 @@ struct file_system_type { #define MODULE_ALIAS_FS(NAME) MODULE_ALIAS("fs-" NAME) +/** + * is_mgtime: is this inode using multigrain timestamps + * @inode: inode to test for multigrain timestamps + * + * Return true if the inode uses multigrain timestamps, false otherwise. + */ +static inline bool is_mgtime(const struct inode *inode) +{ + return inode->i_sb->s_type->fs_flags & FS_MGTIME; +} + extern struct dentry *mount_bdev(struct file_system_type *fs_type, int flags, const char *dev_name, void *data, int (*fill_super)(struct super_block *, void *, int)); @@ -2919,6 +2959,7 @@ extern void page_put_link(void *); extern int page_symlink(struct inode *inode, const char *symname, int len); extern const struct inode_operations page_symlink_inode_operations; extern void kfree_link(void *); +void fill_mg_cmtime(u32 request_mask, struct inode *inode, struct kstat *stat); void generic_fillattr(struct mnt_idmap *, u32, struct inode *, struct kstat *); void generic_fill_statx_attr(struct inode *inode, struct kstat *stat); extern int vfs_getattr_nosec(const struct path *, struct kstat *, u32, unsigned int); From patchwork Tue Jul 25 14:58:16 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeff Layton X-Patchwork-Id: 13326667 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 53C52C04FDF for ; Tue, 25 Jul 2023 15:00:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232514AbjGYPAH (ORCPT ); Tue, 25 Jul 2023 11:00:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60084 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231788AbjGYO7c (ORCPT ); Tue, 25 Jul 2023 10:59:32 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A9E871FD3; Tue, 25 Jul 2023 07:59:12 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 7581661796; Tue, 25 Jul 2023 14:59:11 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6EC60C433B6; Tue, 25 Jul 2023 14:59:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1690297150; bh=2uDpIMGQVMt/gC4T/BxJPAgKQID6PeU0gqKfksNKWnI=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=n2fO+6f3o9pY7IlFzt0rPNlCPvC97bsCNM+BfmqJUquIMuUUrh8omevU9O4/AHkm1 BUhGetnUcCuK1rxWP8h5CviIrVUp9eXO8jpGbYi5hteTH5Xqe5ITh/GzhKNHYCKlZk vlcYpaRegzQJvuY8ntTnypuLjutaWGFpxjpGt7wd4i0rEDrs0fPNKp6yIhyqEEdtAb 8/r999SguPHVOPOVMoBGAZsACOuuAASF/w90W4MAecKdLt6gEneLVh/fG/faExs3M6 nCO0XjvC7eMTX9Xqd+6QSmh67WMiduueljqyzpsqyRjLawhI4Oj6HHr3+rEmH8yk8G 2Ixb9ASBBSh0Q== From: Jeff Layton Date: Tue, 25 Jul 2023 10:58:16 -0400 Subject: [PATCH v6 3/7] tmpfs: bump the mtime/ctime/iversion when page becomes writeable MIME-Version: 1.0 Message-Id: <20230725-mgctime-v6-3-a794c2b7abca@kernel.org> References: <20230725-mgctime-v6-0-a794c2b7abca@kernel.org> In-Reply-To: <20230725-mgctime-v6-0-a794c2b7abca@kernel.org> To: Eric Van Hensbergen , Latchesar Ionkov , Dominique Martinet , Christian Schoenebeck , David Howells , Marc Dionne , Chris Mason , Josef Bacik , David Sterba , Xiubo Li , Ilya Dryomov , Jan Harkes , coda@cs.cmu.edu, Tyler Hicks , Gao Xiang , Chao Yu , Yue Hu , Jeffle Xu , Namjae Jeon , Sungjong Seo , Jan Kara , Theodore Ts'o , Andreas Dilger , Jaegeuk Kim , OGAWA Hirofumi , Miklos Szeredi , Bob Peterson , Andreas Gruenbacher , Greg Kroah-Hartman , Tejun Heo , Alexander Viro , Christian Brauner , Trond Myklebust , Anna Schumaker , Konstantin Komarov , Mark Fasheh , Joel Becker , Joseph Qi , Mike Marshall , Martin Brandenburg , Luis Chamberlain , Kees Cook , Iurii Zaikin , Steve French , Paulo Alcantara , Ronnie Sahlberg , Shyam Prasad N , Tom Talpey , Sergey Senozhatsky , Richard Weinberger , Hans de Goede , Hugh Dickins , Andrew Morton , "Darrick J. Wong" Cc: Dave Chinner , Anthony Iliopoulos , v9fs@lists.linux.dev, linux-kernel@vger.kernel.org, linux-afs@lists.infradead.org, linux-btrfs@vger.kernel.org, ceph-devel@vger.kernel.org, codalist@coda.cs.cmu.edu, ecryptfs@vger.kernel.org, linux-erofs@lists.ozlabs.org, linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, cluster-devel@redhat.com, linux-nfs@vger.kernel.org, ntfs3@lists.linux.dev, ocfs2-devel@lists.linux.dev, devel@lists.orangefs.org, linux-cifs@vger.kernel.org, samba-technical@lists.samba.org, linux-mtd@lists.infradead.org, linux-mm@kvack.org, linux-xfs@vger.kernel.org, Jeff Layton X-Mailer: b4 0.12.3 X-Developer-Signature: v=1; a=openpgp-sha256; l=1641; i=jlayton@kernel.org; h=from:subject:message-id; bh=2uDpIMGQVMt/gC4T/BxJPAgKQID6PeU0gqKfksNKWnI=; b=owEBbQKS/ZANAwAIAQAOaEEZVoIVAcsmYgBkv+MjNDHnc3VpUZs/F8L9rjN3Zof/qnAfmWfPJ HHeEPSmh46JAjMEAAEIAB0WIQRLwNeyRHGyoYTq9dMADmhBGVaCFQUCZL/jIwAKCRAADmhBGVaC FcRQEAC4JBQVQ/gYYTowPETQ4WpI/KRmcf8ArByri6vezI/PnnC+6/c78VVo2CeuLvo39NWHvEc WjMBGKoIjC/rRO0g9ZTnQyG5xMCVFJm+txy5uj0RrkqVeSajWVGMi40jIG0PKIJonSTnuHRNnvv r0qqzIRryKNHPBIqhnaRnVE7lXDmsMo5PQmseWqdieD39P983bSTK3hdLBday25rstPj4a2TwIt U65Yd+CzgPnnCD8f/dWD0LThNK7BtgniJDaWOop13mmeXYnImIgU1M8iY29eCS+EPq8YjysZad3 /bEH2S2nqMnbI/nw3UQ941Rxnnmw6bEPVJnqJAOILyOesX5D82MfHRraU5UCMLp1UUkr/S/iRZf +CarYlZ09IaFEzrA5A2xvr7M4KiNkRaOEhxzDIsQnsRlyqq5jSyU3JRapUwrSogBCkWuAMZRIyG JCaLNaT6v0B5u06FAdINF6uBlVGTmgb4jdavZFZgdI9vrNqAhU42ctOi+vRusrge9q3OR0LDnTU qMHqNtWGe3Hsc2mZEDzSRaXyzcEYKHXBLlXvun2i/eibMafbVx3qIaTbmDNpFzpim2LoIXyGBld HgWK8WxTS/Hc2mF2qYRoCmLCYwcXO/X1WknZcNwcoUCIy50fLXiWyW+IvPAQjYx/4uETnI8jV8R chM8OWlWlDNeYjA== X-Developer-Key: i=jlayton@kernel.org; a=openpgp; fpr=4BC0D7B24471B2A184EAF5D3000E684119568215 Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org Most filesystems that use the pagecache will update the mtime, ctime, and change attribute when a page becomes writeable. Add a page_mkwrite operation for tmpfs and just use it to bump the mtime, ctime and change attribute. This fixes xfstest generic/080 on tmpfs. Signed-off-by: Jeff Layton --- mm/shmem.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/mm/shmem.c b/mm/shmem.c index b154af49d2df..654d9a585820 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -2169,6 +2169,16 @@ static vm_fault_t shmem_fault(struct vm_fault *vmf) return ret; } +static vm_fault_t shmem_page_mkwrite(struct vm_fault *vmf) +{ + struct vm_area_struct *vma = vmf->vma; + struct inode *inode = file_inode(vma->vm_file); + + file_update_time(vma->vm_file); + inode_inc_iversion(inode); + return 0; +} + unsigned long shmem_get_unmapped_area(struct file *file, unsigned long uaddr, unsigned long len, unsigned long pgoff, unsigned long flags) @@ -4210,6 +4220,7 @@ static const struct super_operations shmem_ops = { static const struct vm_operations_struct shmem_vm_ops = { .fault = shmem_fault, + .page_mkwrite = shmem_page_mkwrite, .map_pages = filemap_map_pages, #ifdef CONFIG_NUMA .set_policy = shmem_set_policy, @@ -4219,6 +4230,7 @@ static const struct vm_operations_struct shmem_vm_ops = { static const struct vm_operations_struct shmem_anon_vm_ops = { .fault = shmem_fault, + .page_mkwrite = shmem_page_mkwrite, .map_pages = filemap_map_pages, #ifdef CONFIG_NUMA .set_policy = shmem_set_policy, From patchwork Tue Jul 25 14:58:17 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeff Layton X-Patchwork-Id: 13326668 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 AF431C001DF for ; Tue, 25 Jul 2023 15:00:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232463AbjGYPAW (ORCPT ); Tue, 25 Jul 2023 11:00:22 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60262 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232019AbjGYO7e (ORCPT ); Tue, 25 Jul 2023 10:59:34 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 88BCA2696; Tue, 25 Jul 2023 07:59:18 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 05F176175A; Tue, 25 Jul 2023 14:59:18 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1FE35C433BA; Tue, 25 Jul 2023 14:59:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1690297157; bh=1/8G5JaqUI6KuuI2rdJCgZt0gS2ge3CDkWe83TSi7uM=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=OKVh6IhRvMPzZaUNNT/6mBAoahekKV8Su19ujYhua5dNsSJXGr2MngNtpKOYADlS5 Hcq3wM7FDUZ1AhwU5l0SkI1+lCCn8xOR0JJEjELHxkXsYQRXohxF15c8QjQl0Xm+Dp AabYaBtk81zigqO/ZNjxOWuBUbzqMLIiq+sCKRMr913CtPRA3nMy4ZQya2P+aMfBUm DfLibUhnVNjPNL0YkM5WeV2HMZF3SVAzWSiYRKfJIayN7D5eWYtRDof0ETICfcAJhP 1QdzIniwIyLPb29vjUNBQTa5/ioEZS6W4QeTzhNnSbuJelJPSwWTBbQCum2wVq78oc 3sGYY+SrEP5rg== From: Jeff Layton Date: Tue, 25 Jul 2023 10:58:17 -0400 Subject: [PATCH v6 4/7] tmpfs: add support for multigrain timestamps MIME-Version: 1.0 Message-Id: <20230725-mgctime-v6-4-a794c2b7abca@kernel.org> References: <20230725-mgctime-v6-0-a794c2b7abca@kernel.org> In-Reply-To: <20230725-mgctime-v6-0-a794c2b7abca@kernel.org> To: Eric Van Hensbergen , Latchesar Ionkov , Dominique Martinet , Christian Schoenebeck , David Howells , Marc Dionne , Chris Mason , Josef Bacik , David Sterba , Xiubo Li , Ilya Dryomov , Jan Harkes , coda@cs.cmu.edu, Tyler Hicks , Gao Xiang , Chao Yu , Yue Hu , Jeffle Xu , Namjae Jeon , Sungjong Seo , Jan Kara , Theodore Ts'o , Andreas Dilger , Jaegeuk Kim , OGAWA Hirofumi , Miklos Szeredi , Bob Peterson , Andreas Gruenbacher , Greg Kroah-Hartman , Tejun Heo , Alexander Viro , Christian Brauner , Trond Myklebust , Anna Schumaker , Konstantin Komarov , Mark Fasheh , Joel Becker , Joseph Qi , Mike Marshall , Martin Brandenburg , Luis Chamberlain , Kees Cook , Iurii Zaikin , Steve French , Paulo Alcantara , Ronnie Sahlberg , Shyam Prasad N , Tom Talpey , Sergey Senozhatsky , Richard Weinberger , Hans de Goede , Hugh Dickins , Andrew Morton , "Darrick J. 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Signed-off-by: Jeff Layton Reviewed-by: Jan Kara --- mm/shmem.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/shmem.c b/mm/shmem.c index 654d9a585820..b6019c905058 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -4264,7 +4264,7 @@ static struct file_system_type shmem_fs_type = { #endif .kill_sb = kill_litter_super, #ifdef CONFIG_SHMEM - .fs_flags = FS_USERNS_MOUNT | FS_ALLOW_IDMAP, + .fs_flags = FS_USERNS_MOUNT | FS_ALLOW_IDMAP | FS_MGTIME, #else .fs_flags = FS_USERNS_MOUNT, #endif From patchwork Tue Jul 25 14:58:18 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeff Layton X-Patchwork-Id: 13326669 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 24090C41513 for ; Tue, 25 Jul 2023 15:00:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231951AbjGYPAa (ORCPT ); Tue, 25 Jul 2023 11:00:30 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60368 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229788AbjGYO7o (ORCPT ); Tue, 25 Jul 2023 10:59:44 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E9BEA270E; Tue, 25 Jul 2023 07:59:24 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 7DC5D6178F; Tue, 25 Jul 2023 14:59:24 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9B79EC43391; Tue, 25 Jul 2023 14:59:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1690297163; bh=2wyPg6r9LV0rMw3rwiDdQz97NuQm6trs7Tz3krXz824=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=alZ0gxYy+IkbheJTJP3qA2iEk4eNxl7eSGrfIs+MxZSUI5FjVlgNKYG5ztKp3Air1 gU0wFT7ZCjZL97L1pSzjV2gLHwstvP7MB6Z34if0oOLpUl4yCyGO8lfYx/uM34yD1h 9LZWMe7lIPe5nXOW07yRzmCzjlvxPbX1ZXW44vy0Pu6/7l4Z9vUIrk0XHzxH7FLSn0 Zok2yVBZaZarTyEeN65Qsn24kYQ8HA3DH5VcBZbywjGCZx1K80THvInEU4Q0j5ZfkG j9JBRdKpKVrkp5Bentl7GIljUepcCHIJlPZHHNjpgnyCCT/2W0WCPCo/TCZpXZWlzT vUIjlakd0S9oA== From: Jeff Layton Date: Tue, 25 Jul 2023 10:58:18 -0400 Subject: [PATCH v6 5/7] xfs: switch to multigrain timestamps MIME-Version: 1.0 Message-Id: <20230725-mgctime-v6-5-a794c2b7abca@kernel.org> References: <20230725-mgctime-v6-0-a794c2b7abca@kernel.org> In-Reply-To: <20230725-mgctime-v6-0-a794c2b7abca@kernel.org> To: Eric Van Hensbergen , Latchesar Ionkov , Dominique Martinet , Christian Schoenebeck , David Howells , Marc Dionne , Chris Mason , Josef Bacik , David Sterba , Xiubo Li , Ilya Dryomov , Jan Harkes , coda@cs.cmu.edu, Tyler Hicks , Gao Xiang , Chao Yu , Yue Hu , Jeffle Xu , Namjae Jeon , Sungjong Seo , Jan Kara , Theodore Ts'o , Andreas Dilger , Jaegeuk Kim , OGAWA Hirofumi , Miklos Szeredi , Bob Peterson , Andreas Gruenbacher , Greg Kroah-Hartman , Tejun Heo , Alexander Viro , Christian Brauner , Trond Myklebust , Anna Schumaker , Konstantin Komarov , Mark Fasheh , Joel Becker , Joseph Qi , Mike Marshall , Martin Brandenburg , Luis Chamberlain , Kees Cook , Iurii Zaikin , Steve French , Paulo Alcantara , Ronnie Sahlberg , Shyam Prasad N , Tom Talpey , Sergey Senozhatsky , Richard Weinberger , Hans de Goede , Hugh Dickins , Andrew Morton , "Darrick J. Wong" Cc: Dave Chinner , Anthony Iliopoulos , v9fs@lists.linux.dev, linux-kernel@vger.kernel.org, linux-afs@lists.infradead.org, linux-btrfs@vger.kernel.org, ceph-devel@vger.kernel.org, codalist@coda.cs.cmu.edu, ecryptfs@vger.kernel.org, linux-erofs@lists.ozlabs.org, linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, cluster-devel@redhat.com, linux-nfs@vger.kernel.org, ntfs3@lists.linux.dev, ocfs2-devel@lists.linux.dev, devel@lists.orangefs.org, linux-cifs@vger.kernel.org, samba-technical@lists.samba.org, linux-mtd@lists.infradead.org, linux-mm@kvack.org, linux-xfs@vger.kernel.org, Jeff Layton X-Mailer: b4 0.12.3 X-Developer-Signature: v=1; a=openpgp-sha256; l=2386; i=jlayton@kernel.org; h=from:subject:message-id; bh=2wyPg6r9LV0rMw3rwiDdQz97NuQm6trs7Tz3krXz824=; b=owEBbQKS/ZANAwAIAQAOaEEZVoIVAcsmYgBkv+MkP4yvT+W3sEtTwUyKNN0Eo+qCCd0hAxl+0 h4C0zNUhdGJAjMEAAEIAB0WIQRLwNeyRHGyoYTq9dMADmhBGVaCFQUCZL/jJAAKCRAADmhBGVaC FeBjEACUyo8TVL0skmaKxmt9N9nKbRC1TSdvVtM4yiwxJ8jEsCm89ngnhuv/BuJpe41Lx5wb/iz dmMFWHzJRu2aCWptETR3OPCB2GrAR7iNntPS9+gNC6m+5BqrCE02YO3lUtUaRUAYl5OC8Ri6BBQ OEGhtGXHAEQdKV6DErIItzKARajHjYVOGXQMptrAmfVeqZrMgMdnjXv1BkrB7vTxPnEIiZvpXc6 teMkRXV34FsYAQxvcwm57Mmv+ZzhSEhzQj+7Hi5Fd+/iThWp2ImD7wKtbimsgjidI9ckdD0c5hK 1Xoqn16mf7rIUqDTVbuzYbGQI7meLwVcGOlqdqnPMN1HtuSDkogTkGd77hv9NxndH8aK+N90UKH Ks08xZN4yQjcuR2zIFRUCLsaC33fU+/2m8VEH3iIAIDEuqCogY30aCPWiBS4KwHktS1ry5SwFbm xZAhqbegcfX5h0NU2bjonVVMYypC3Ec8Hxs4E7nRLhsdTAF1PwzkcKRfJjflMTm3AVDbGhzr6a2 iNqi2cULBGY/OkiIc97k83/uxrYZSoRVPtrYbRcPDbTmukKm1rRd6io2dU5p1c3Q6EjIhCyoi2B JMPklYNmRVzbzK/y3yeiwwfKpR8AeSRX5pHEDo1ALd8eLd8NtlYkhsN0E3WvbTaYS8RS42Ee4xk v57B1AdBsJ4Ldbg== X-Developer-Key: i=jlayton@kernel.org; a=openpgp; fpr=4BC0D7B24471B2A184EAF5D3000E684119568215 Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org Enable multigrain timestamps, which should ensure that there is an apparent change to the timestamp whenever it has been written after being actively observed via getattr. Also, anytime the mtime changes, the ctime must also change, and those are now the only two options for xfs_trans_ichgtime. Have that function unconditionally bump the ctime, and ASSERT that XFS_ICHGTIME_CHG is always set. Signed-off-by: Jeff Layton Acked-by: Darrick J. Wong --- fs/xfs/libxfs/xfs_trans_inode.c | 6 +++--- fs/xfs/xfs_iops.c | 4 ++-- fs/xfs/xfs_super.c | 2 +- 3 files changed, 6 insertions(+), 6 deletions(-) diff --git a/fs/xfs/libxfs/xfs_trans_inode.c b/fs/xfs/libxfs/xfs_trans_inode.c index 6b2296ff248a..ad22656376d3 100644 --- a/fs/xfs/libxfs/xfs_trans_inode.c +++ b/fs/xfs/libxfs/xfs_trans_inode.c @@ -62,12 +62,12 @@ xfs_trans_ichgtime( ASSERT(tp); ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); - tv = current_time(inode); + /* If the mtime changes, then ctime must also change */ + ASSERT(flags & XFS_ICHGTIME_CHG); + tv = inode_set_ctime_current(inode); if (flags & XFS_ICHGTIME_MOD) inode->i_mtime = tv; - if (flags & XFS_ICHGTIME_CHG) - inode_set_ctime_to_ts(inode, tv); if (flags & XFS_ICHGTIME_CREATE) ip->i_crtime = tv; } diff --git a/fs/xfs/xfs_iops.c b/fs/xfs/xfs_iops.c index 3a9363953ef2..3f89ef5a2820 100644 --- a/fs/xfs/xfs_iops.c +++ b/fs/xfs/xfs_iops.c @@ -573,10 +573,10 @@ xfs_vn_getattr( stat->gid = vfsgid_into_kgid(vfsgid); stat->ino = ip->i_ino; stat->atime = inode->i_atime; - stat->mtime = inode->i_mtime; - stat->ctime = inode_get_ctime(inode); stat->blocks = XFS_FSB_TO_BB(mp, ip->i_nblocks + ip->i_delayed_blks); + fill_mg_cmtime(request_mask, inode, stat); + if (xfs_has_v3inodes(mp)) { if (request_mask & STATX_BTIME) { stat->result_mask |= STATX_BTIME; diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c index 818510243130..4b10edb2c972 100644 --- a/fs/xfs/xfs_super.c +++ b/fs/xfs/xfs_super.c @@ -2009,7 +2009,7 @@ static struct file_system_type xfs_fs_type = { .init_fs_context = xfs_init_fs_context, .parameters = xfs_fs_parameters, .kill_sb = kill_block_super, - .fs_flags = FS_REQUIRES_DEV | FS_ALLOW_IDMAP, + .fs_flags = FS_REQUIRES_DEV | FS_ALLOW_IDMAP | FS_MGTIME, }; MODULE_ALIAS_FS("xfs"); From patchwork Tue Jul 25 14:58:19 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeff Layton X-Patchwork-Id: 13326670 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 D594BC00528 for ; Tue, 25 Jul 2023 15:00:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232597AbjGYPAy (ORCPT ); Tue, 25 Jul 2023 11:00:54 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60958 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231863AbjGYPAG (ORCPT ); Tue, 25 Jul 2023 11:00:06 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 797E92116; Tue, 25 Jul 2023 07:59:31 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id F416F6178E; Tue, 25 Jul 2023 14:59:30 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 24A85C433C8; Tue, 25 Jul 2023 14:59:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1690297170; bh=kIvw1OVi/OYz+atwIBCynX0q88XJ1zU1WapHn2pYQP4=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=G4lNe8OgwdzIy+DkoO8bA4V3fq2HfOynEvqBH0FZcXI5mjKRSEQ1SVjY1pHApZqUk LmVSxl1WUBGP7yGLH/ATsMnAnQMEPU+QAPGj8qdwUCRyUhAcUv0FTDqFlH73mrgqZw FzXbD+KfSe8VN284suFEL1YtHLX5tEg7JJkEkQGz0MGrxMX8CR2SkfzChxuDfyTNeS ZXRDShsOopX0jA288qfXuKjqRRyiZ1CyY3mdX/g1AczrOzezsb6EzZ2F8AGwPXdDYp PORRSahQS9CPN8wTXE5yLGawxDIeRTErDdxD6OfHFhzLgjKl8kPDh2mkBPRjnVLKHw ehvrosoKitaHg== From: Jeff Layton Date: Tue, 25 Jul 2023 10:58:19 -0400 Subject: [PATCH v6 6/7] ext4: switch to multigrain timestamps MIME-Version: 1.0 Message-Id: <20230725-mgctime-v6-6-a794c2b7abca@kernel.org> References: <20230725-mgctime-v6-0-a794c2b7abca@kernel.org> In-Reply-To: <20230725-mgctime-v6-0-a794c2b7abca@kernel.org> To: Eric Van Hensbergen , Latchesar Ionkov , Dominique Martinet , Christian Schoenebeck , David Howells , Marc Dionne , Chris Mason , Josef Bacik , David Sterba , Xiubo Li , Ilya Dryomov , Jan Harkes , coda@cs.cmu.edu, Tyler Hicks , Gao Xiang , Chao Yu , Yue Hu , Jeffle Xu , Namjae Jeon , Sungjong Seo , Jan Kara , Theodore Ts'o , Andreas Dilger , Jaegeuk Kim , OGAWA Hirofumi , Miklos Szeredi , Bob Peterson , Andreas Gruenbacher , Greg Kroah-Hartman , Tejun Heo , Alexander Viro , Christian Brauner , Trond Myklebust , Anna Schumaker , Konstantin Komarov , Mark Fasheh , Joel Becker , Joseph Qi , Mike Marshall , Martin Brandenburg , Luis Chamberlain , Kees Cook , Iurii Zaikin , Steve French , Paulo Alcantara , Ronnie Sahlberg , Shyam Prasad N , Tom Talpey , Sergey Senozhatsky , Richard Weinberger , Hans de Goede , Hugh Dickins , Andrew Morton , "Darrick J. Wong" Cc: Dave Chinner , Anthony Iliopoulos , v9fs@lists.linux.dev, linux-kernel@vger.kernel.org, linux-afs@lists.infradead.org, linux-btrfs@vger.kernel.org, ceph-devel@vger.kernel.org, codalist@coda.cs.cmu.edu, ecryptfs@vger.kernel.org, linux-erofs@lists.ozlabs.org, linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, cluster-devel@redhat.com, linux-nfs@vger.kernel.org, ntfs3@lists.linux.dev, ocfs2-devel@lists.linux.dev, devel@lists.orangefs.org, linux-cifs@vger.kernel.org, samba-technical@lists.samba.org, linux-mtd@lists.infradead.org, linux-mm@kvack.org, linux-xfs@vger.kernel.org, Jeff Layton X-Mailer: b4 0.12.3 X-Developer-Signature: v=1; a=openpgp-sha256; l=843; i=jlayton@kernel.org; h=from:subject:message-id; bh=kIvw1OVi/OYz+atwIBCynX0q88XJ1zU1WapHn2pYQP4=; b=owEBbQKS/ZANAwAIAQAOaEEZVoIVAcsmYgBkv+MkANALyeokJ5uPYYXrLhMbqAMD2+dQLEEeI 3QOMYBSSseJAjMEAAEIAB0WIQRLwNeyRHGyoYTq9dMADmhBGVaCFQUCZL/jJAAKCRAADmhBGVaC FecsEADEGQ4YyezueKIIr3iE+LoOFLQ0lVcEMPslgKBrcsoHAYDw4xIHTfiRLmJTS/QKl6qdQ/d FSIkPrBSo4busWekGlohEMVxhED8IPediFhHYC1BJu3i2vSmxv2wo9z3DGJxddYsn1yasB7Jh8X V82bCE/S8+YwWBe/sU9UHYXIA/E18x/9Ut0FSPmZUwXbasPrZoaYGahxEDFFvONFPxKYVH6MIwn K4eVmycva/cc9eg3aJ9IoKpjm2lHJ6SlHwQREAxcyQZ+Tz4LAI9NG4I0N4mft7VwVj05wY4iuMV lkaoxH/4D3tYZmIldIJ9HahAnA+IlU9dZ/4YPR7iaTlZNdGssfn5cvsTHNjvp00H6KNNnr3nKEg JOy94wl7Ir1GrUPEDT1u+XQipTMQxiFjTQLc+igYmNNY+nLJu1edF6ewi3eMTP81b6gmzOHenud CQ3qmNNoiiQu5pItfIvt0j+K74oTiUZzOqrMqtEgUQ3flSJL2acI1UnY4m1h0JIEygBAMmXN/Ga 6TPHXNSLdiIKa44+muGKEdIXTv22lvk6eI3L4mwE12/sKh5INo3rOJmQKNhtubYrUtLDSvrLCQa a/tcAz4eG/zd6PdcWTx1yg8GKnXbxqwHniAFlSBVM+ziSpqGTe2fxM3iHanHqv1hysy6sBXln6X HdxNyY7YiReYS0Q== X-Developer-Key: i=jlayton@kernel.org; a=openpgp; fpr=4BC0D7B24471B2A184EAF5D3000E684119568215 Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org Enable multigrain timestamps, which should ensure that there is an apparent change to the timestamp whenever it has been written after being actively observed via getattr. For ext4, we only need to enable the FS_MGTIME flag. Signed-off-by: Jeff Layton Reviewed-by: Jan Kara --- fs/ext4/super.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/ext4/super.c b/fs/ext4/super.c index b54c70e1a74e..cb1ff47af156 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -7279,7 +7279,7 @@ static struct file_system_type ext4_fs_type = { .init_fs_context = ext4_init_fs_context, .parameters = ext4_param_specs, .kill_sb = kill_block_super, - .fs_flags = FS_REQUIRES_DEV | FS_ALLOW_IDMAP, + .fs_flags = FS_REQUIRES_DEV | FS_ALLOW_IDMAP | FS_MGTIME, }; MODULE_ALIAS_FS("ext4"); From patchwork Tue Jul 25 14:58:20 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeff Layton X-Patchwork-Id: 13326671 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 BC497C41513 for ; Tue, 25 Jul 2023 15:01:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229712AbjGYPBB (ORCPT ); Tue, 25 Jul 2023 11:01:01 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60968 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232248AbjGYPAG (ORCPT ); Tue, 25 Jul 2023 11:00:06 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D9AF3199D; Tue, 25 Jul 2023 07:59:37 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 77B1961797; Tue, 25 Jul 2023 14:59:37 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id A2936C433AD; Tue, 25 Jul 2023 14:59:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1690297176; bh=t187d4hlj7Hd2B853hoiIPlXJE4vBx7O1lkOZGTYDW8=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=SSmBXICMwwOT3suM7Wh9+/efKJhkY/qtCAceKg5JcawInGhDeAcad93pkmikV0o+6 4WemX3e9jmjVTbdAQRpQdyZIhz1g9e0iDBRjM7wITplVnNb0dKwcSeSRf8RXFJDlWS 05qhAWRZOBxveiT38itiEKwwzi2cwotnAfVwMeMGzQCXfg4aP/7QA/7BOeFl3k+q2W k4L1Wuc6aR3dIYbSuqKgvU4mO6BXIuKAuk+5ULb3C0pXfvdRzoF0OIGIEUDaE/vzJU 9DjaVzezFk7HWbRa31mtwovPb4u6potKHgCKfEVNxB3PuDjxy8+/zOplOia8cZNwpQ rRGJw4To0RgnQ== From: Jeff Layton Date: Tue, 25 Jul 2023 10:58:20 -0400 Subject: [PATCH v6 7/7] btrfs: convert to multigrain timestamps MIME-Version: 1.0 Message-Id: <20230725-mgctime-v6-7-a794c2b7abca@kernel.org> References: <20230725-mgctime-v6-0-a794c2b7abca@kernel.org> In-Reply-To: <20230725-mgctime-v6-0-a794c2b7abca@kernel.org> To: Eric Van Hensbergen , Latchesar Ionkov , Dominique Martinet , Christian Schoenebeck , David Howells , Marc Dionne , Chris Mason , Josef Bacik , David Sterba , Xiubo Li , Ilya Dryomov , Jan Harkes , coda@cs.cmu.edu, Tyler Hicks , Gao Xiang , Chao Yu , Yue Hu , Jeffle Xu , Namjae Jeon , Sungjong Seo , Jan Kara , Theodore Ts'o , Andreas Dilger , Jaegeuk Kim , OGAWA Hirofumi , Miklos Szeredi , Bob Peterson , Andreas Gruenbacher , Greg Kroah-Hartman , Tejun Heo , Alexander Viro , Christian Brauner , Trond Myklebust , Anna Schumaker , Konstantin Komarov , Mark Fasheh , Joel Becker , Joseph Qi , Mike Marshall , Martin Brandenburg , Luis Chamberlain , Kees Cook , Iurii Zaikin , Steve French , Paulo Alcantara , Ronnie Sahlberg , Shyam Prasad N , Tom Talpey , Sergey Senozhatsky , Richard Weinberger , Hans de Goede , Hugh Dickins , Andrew Morton , "Darrick J. Wong" Cc: Dave Chinner , Anthony Iliopoulos , v9fs@lists.linux.dev, linux-kernel@vger.kernel.org, linux-afs@lists.infradead.org, linux-btrfs@vger.kernel.org, ceph-devel@vger.kernel.org, codalist@coda.cs.cmu.edu, ecryptfs@vger.kernel.org, linux-erofs@lists.ozlabs.org, linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, cluster-devel@redhat.com, linux-nfs@vger.kernel.org, ntfs3@lists.linux.dev, ocfs2-devel@lists.linux.dev, devel@lists.orangefs.org, linux-cifs@vger.kernel.org, samba-technical@lists.samba.org, linux-mtd@lists.infradead.org, linux-mm@kvack.org, linux-xfs@vger.kernel.org, Jeff Layton X-Mailer: b4 0.12.3 X-Developer-Signature: v=1; a=openpgp-sha256; l=2706; i=jlayton@kernel.org; h=from:subject:message-id; bh=t187d4hlj7Hd2B853hoiIPlXJE4vBx7O1lkOZGTYDW8=; b=owEBbQKS/ZANAwAIAQAOaEEZVoIVAcsmYgBkv+MkzroP27sCWuNSIgl+Cd1orLkVgLYnAGcGo qEGnD3ITTiJAjMEAAEIAB0WIQRLwNeyRHGyoYTq9dMADmhBGVaCFQUCZL/jJAAKCRAADmhBGVaC FezWEACH2UPwfc8Rd5LxW2eGVPkB5meVxJPlOLQBj6pWDkW95diD7uXPQto9lmLQF4qdUED+5gy WLeo0BKULpIsDQGcmeJ0JkL/JiN2PbntEUg4RArSmU+rbZrR++dnF7ONr6ND9nWmLJNpuajyStV pcZilQXeumx55tirF1mt2vbGkXsKu/qHNXXLZ4CnD9fI2bIWLHaqsutS3k6iENOAKoEtdCWwoM9 FVpdj3qFKKuML2HPLPiNiqSR4PQMpFrJZuJtwugTZ4dV2zGIpz2l4Fo+eJzLD8g3FKg1A3Mk34F Uziz080sql3EtQDp+oM7E0vxs8NLvt2bJsGtEl+GEq10Z1KQiGEE118baYC/FF3Y1JhZ8N3o/6n NTmLgKCSGgEaX90TUrhvCtvVULKCcbHbm/RkOiIu7CC5iVHPV6RW/oHBDJVwKYW+2MlAb+VY5re f+nknpCe54xwkAkjA93/0IhnnhD1PqlAiOzimKBVA2WsnYyUS0Q10BesJm3HaFKmBvca1rkAIvY 5RVnuhgAlq6eH4QItdabELeq+RMtIFijqWrAAvDc0GPhlIwBn3i4uHiLu5D086UgM+5Nt7DjCZf 3QmNVnOo1Lw9zpdhHxNYnhUO9mT6oJzmtiR5/Z3Ca5TZ+LV2ivQE3dGm4TXhbyY0GAZ/FvepgyX df3wfm4D0Ck2M5Q== X-Developer-Key: i=jlayton@kernel.org; a=openpgp; fpr=4BC0D7B24471B2A184EAF5D3000E684119568215 Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org Enable multigrain timestamps, which should ensure that there is an apparent change to the timestamp whenever it has been written after being actively observed via getattr. Beyond enabling the FS_MGTIME flag, this patch eliminates update_time_for_write, which goes to great pains to avoid in-memory stores. Just have it overwrite the timestamps unconditionally. Signed-off-by: Jeff Layton Acked-by: David Sterba --- fs/btrfs/file.c | 24 ++++-------------------- fs/btrfs/super.c | 5 +++-- 2 files changed, 7 insertions(+), 22 deletions(-) diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c index d7a9ece7a40b..b9e75c9f95ac 100644 --- a/fs/btrfs/file.c +++ b/fs/btrfs/file.c @@ -1106,25 +1106,6 @@ void btrfs_check_nocow_unlock(struct btrfs_inode *inode) btrfs_drew_write_unlock(&inode->root->snapshot_lock); } -static void update_time_for_write(struct inode *inode) -{ - struct timespec64 now, ctime; - - if (IS_NOCMTIME(inode)) - return; - - now = current_time(inode); - if (!timespec64_equal(&inode->i_mtime, &now)) - inode->i_mtime = now; - - ctime = inode_get_ctime(inode); - if (!timespec64_equal(&ctime, &now)) - inode_set_ctime_to_ts(inode, now); - - if (IS_I_VERSION(inode)) - inode_inc_iversion(inode); -} - static int btrfs_write_check(struct kiocb *iocb, struct iov_iter *from, size_t count) { @@ -1156,7 +1137,10 @@ static int btrfs_write_check(struct kiocb *iocb, struct iov_iter *from, * need to start yet another transaction to update the inode as we will * update the inode when we finish writing whatever data we write. */ - update_time_for_write(inode); + if (!IS_NOCMTIME(inode)) { + inode->i_mtime = inode_set_ctime_current(inode); + inode_inc_iversion(inode); + } start_pos = round_down(pos, fs_info->sectorsize); oldsize = i_size_read(inode); diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c index f1dd172d8d5b..8eda51b095c9 100644 --- a/fs/btrfs/super.c +++ b/fs/btrfs/super.c @@ -2144,7 +2144,7 @@ static struct file_system_type btrfs_fs_type = { .name = "btrfs", .mount = btrfs_mount, .kill_sb = btrfs_kill_super, - .fs_flags = FS_REQUIRES_DEV | FS_BINARY_MOUNTDATA, + .fs_flags = FS_REQUIRES_DEV | FS_BINARY_MOUNTDATA | FS_MGTIME, }; static struct file_system_type btrfs_root_fs_type = { @@ -2152,7 +2152,8 @@ static struct file_system_type btrfs_root_fs_type = { .name = "btrfs", .mount = btrfs_mount_root, .kill_sb = btrfs_kill_super, - .fs_flags = FS_REQUIRES_DEV | FS_BINARY_MOUNTDATA | FS_ALLOW_IDMAP, + .fs_flags = FS_REQUIRES_DEV | FS_BINARY_MOUNTDATA | + FS_ALLOW_IDMAP | FS_MGTIME, }; MODULE_ALIAS_FS("btrfs");