From patchwork Wed Sep 7 11:33:13 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeff Layton X-Patchwork-Id: 12968898 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 9ED37C6FA83 for ; Wed, 7 Sep 2022 11:33:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230124AbiIGLdg (ORCPT ); Wed, 7 Sep 2022 07:33:36 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36898 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230007AbiIGLd2 (ORCPT ); Wed, 7 Sep 2022 07:33:28 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 289D4B69FE; Wed, 7 Sep 2022 04:33:27 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 90DADB81C54; Wed, 7 Sep 2022 11:33:25 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 21A83C433D7; Wed, 7 Sep 2022 11:33:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1662550404; bh=pgdqISJ78hjl4jnmYpYl02FTsH6QtwIm0GzwJzLcJeo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=jUc7JHz1Hr2VUZGmUY4B2Dzd5YyfayOVb2CGCl2Zf2UIARfJWnVLP+OXLTGgPO92g AhLkb5dQ9JbjsORHi2Ax36RR74jMzgvHINBHQI6UyFgf2jN5fn/63ipvLH4ra4ahtV skULuiwl0q3Wy+Vi1CS8FMxQupOejwnl6u4CtO5lcEv0x5O0a/y5xb1Zi/ewxZxXds jARtbume4Mw03XpbL02ybRsrBXOKeiXKY3NgiuX2Kny8KdaX6kWEtWVG7210oIERkE O/QczdmNwXrYTxn+O56xquvTObPPvgSm1Ujr2fWFDysoa2oMg1+MEm3g01n8Kp6hhR kOEgcTuiayIdA== From: Jeff Layton To: tytso@mit.edu, adilger.kernel@dilger.ca, djwong@kernel.org, david@fromorbit.com, trondmy@hammerspace.com, neilb@suse.de, viro@zeniv.linux.org.uk, zohar@linux.ibm.com, xiubli@redhat.com, chuck.lever@oracle.com, lczerner@redhat.com, jack@suse.cz, bfields@fieldses.org, brauner@kernel.org, fweimer@redhat.com Cc: linux-api@vger.kernel.org, linux-btrfs@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, ceph-devel@vger.kernel.org, linux-ext4@vger.kernel.org, linux-nfs@vger.kernel.org, linux-xfs@vger.kernel.org, Colin Walters Subject: [PATCH v4 1/6] iversion: update comments with info about atime updates Date: Wed, 7 Sep 2022 07:33:13 -0400 Message-Id: <20220907113318.21810-2-jlayton@kernel.org> X-Mailer: git-send-email 2.37.3 In-Reply-To: <20220907113318.21810-1-jlayton@kernel.org> References: <20220907113318.21810-1-jlayton@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org The i_version field in the kernel has had different semantics over the decades, but we're now proposing to expose it to userland via statx. This means that we need a clear, consistent definition of what it means and when it should change. Update the comments in iversion.h to describe when the i_version must change. Cc: Colin Walters Cc: NeilBrown Cc: Trond Myklebust Cc: Dave Chinner Link: https://lore.kernel.org/linux-xfs/166086932784.5425.17134712694961326033@noble.neil.brown.name/#t Signed-off-by: Jeff Layton --- include/linux/iversion.h | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/include/linux/iversion.h b/include/linux/iversion.h index 3bfebde5a1a6..0555a3851dbf 100644 --- a/include/linux/iversion.h +++ b/include/linux/iversion.h @@ -9,8 +9,14 @@ * --------------------------- * The change attribute (i_version) is mandated by NFSv4 and is mostly for * knfsd, but is also used for other purposes (e.g. IMA). The i_version must - * appear different to observers if there was a change to the inode's data or - * metadata since it was last queried. + * appear larger to observers if there was an explicit change to the inode's + * data or metadata since it was last queried. + * + * An explicit change is one that would ordinarily result in a change to the + * inode status change time (aka ctime). i_version must appear to change, even + * if the ctime does not (since the whole point is to avoid missing updates due + * to timestamp granularity). If POSIX mandates that the ctime must change due + * to an operation, then the i_version counter must be incremented as well. * * Observers see the i_version as a 64-bit number that never decreases. If it * remains the same since it was last checked, then nothing has changed in the From patchwork Wed Sep 7 11:33:14 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeff Layton X-Patchwork-Id: 12968897 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 E691BC6FA89 for ; Wed, 7 Sep 2022 11:33:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230101AbiIGLdf (ORCPT ); Wed, 7 Sep 2022 07:33:35 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36912 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230011AbiIGLd2 (ORCPT ); Wed, 7 Sep 2022 07:33:28 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7A465B6D07; Wed, 7 Sep 2022 04:33:27 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id EB2126187C; Wed, 7 Sep 2022 11:33:26 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 665D1C433C1; Wed, 7 Sep 2022 11:33:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1662550406; bh=4Wib3fNt64VOneA2MVI2ZHf68wx0/SLas54CS8oHEX4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=kR4FlIC2bVhB59ohkJXJHMSaHuEENO23KM51TfJLa/UHZOu9XaF048K9xokSS3PW6 vxsZZ8p3u3gtn2dBIzhuqmEZn509LePD7s5jidCjt1prOuXkVVrkyOUtqdeawQW/oM w+1yzHKjXvXbIFj1ToqWkcr6sLL+44fJZ89SZH8gQ7mLG0U06bJyy6w6wJksPs47oQ XSFiFI0jLSF5uHQl1v0OHdtsASy2aPcSUE3f4GJoMYZv/qo2S/dApKWuqUhODa5v8u KloD/it+0WifBNh1fv1GVHYd7WeqS6O3A5IEGEHBqtAOly10a+ypT1KqJ4Sgt1XVxf CeQH8ZNtRrv1Q== From: Jeff Layton To: tytso@mit.edu, adilger.kernel@dilger.ca, djwong@kernel.org, david@fromorbit.com, trondmy@hammerspace.com, neilb@suse.de, viro@zeniv.linux.org.uk, zohar@linux.ibm.com, xiubli@redhat.com, chuck.lever@oracle.com, lczerner@redhat.com, jack@suse.cz, bfields@fieldses.org, brauner@kernel.org, fweimer@redhat.com Cc: linux-api@vger.kernel.org, linux-btrfs@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, ceph-devel@vger.kernel.org, linux-ext4@vger.kernel.org, linux-nfs@vger.kernel.org, linux-xfs@vger.kernel.org Subject: [PATCH v4 2/6] ext4: fix i_version handling in ext4 Date: Wed, 7 Sep 2022 07:33:14 -0400 Message-Id: <20220907113318.21810-3-jlayton@kernel.org> X-Mailer: git-send-email 2.37.3 In-Reply-To: <20220907113318.21810-1-jlayton@kernel.org> References: <20220907113318.21810-1-jlayton@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org ext4 currently updates the i_version counter when the atime is updated during a read. This is less than ideal as it can cause unnecessary cache invalidations with NFSv4 and unnecessary remeasurements for IMA. The increment in ext4_mark_iloc_dirty is also problematic since it can corrupt the i_version counter for ea_inodes. We aren't bumping the file times in ext4_mark_iloc_dirty, so changing the i_version there seems wrong, and is the cause of both problems. Remove that callsite and add increments to the setattr, setxattr and ioctl codepaths, at the same times that we update the ctime. The i_version bump that already happens during timestamp updates should take care of the rest. In ext4_move_extents, increment the i_version on both inodes, and also add in missing ctime updates. Cc: Lukas Czerner Reviewed-by: Jan Kara Reviewed-by: Christian Brauner (Microsoft) Signed-off-by: Jeff Layton --- fs/ext4/inode.c | 15 +++++---------- fs/ext4/ioctl.c | 8 ++++++++ fs/ext4/move_extent.c | 8 ++++++++ fs/ext4/xattr.c | 2 ++ 4 files changed, 23 insertions(+), 10 deletions(-) Note that this patch is based on top of this patch from Lukas: ext4: don't increase iversion counter for ea_inodes It won't apply cleanly to mainline without that. diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 2a220be34caa..aa37bce4c541 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -5342,6 +5342,7 @@ int ext4_setattr(struct user_namespace *mnt_userns, struct dentry *dentry, int error, rc = 0; int orphan = 0; const unsigned int ia_valid = attr->ia_valid; + bool inc_ivers = IS_I_VERSION(inode); if (unlikely(ext4_forced_shutdown(EXT4_SB(inode->i_sb)))) return -EIO; @@ -5425,8 +5426,8 @@ int ext4_setattr(struct user_namespace *mnt_userns, struct dentry *dentry, return -EINVAL; } - if (IS_I_VERSION(inode) && attr->ia_size != inode->i_size) - inode_inc_iversion(inode); + if (attr->ia_size == inode->i_size) + inc_ivers = false; if (shrink) { if (ext4_should_order_data(inode)) { @@ -5528,6 +5529,8 @@ int ext4_setattr(struct user_namespace *mnt_userns, struct dentry *dentry, } if (!error) { + if (inc_ivers) + inode_inc_iversion(inode); setattr_copy(mnt_userns, inode, attr); mark_inode_dirty(inode); } @@ -5731,14 +5734,6 @@ int ext4_mark_iloc_dirty(handle_t *handle, } ext4_fc_track_inode(handle, inode); - /* - * ea_inodes are using i_version for storing reference count, don't - * mess with it - */ - if (IS_I_VERSION(inode) && - !(EXT4_I(inode)->i_flags & EXT4_EA_INODE_FL)) - inode_inc_iversion(inode); - /* the do_update_inode consumes one bh->b_count */ get_bh(iloc->bh); diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c index 3cf3ec4b1c21..60e77ae9342d 100644 --- a/fs/ext4/ioctl.c +++ b/fs/ext4/ioctl.c @@ -452,6 +452,8 @@ static long swap_inode_boot_loader(struct super_block *sb, swap_inode_data(inode, inode_bl); inode->i_ctime = inode_bl->i_ctime = current_time(inode); + if (IS_I_VERSION(inode)) + inode_inc_iversion(inode); inode->i_generation = prandom_u32(); inode_bl->i_generation = prandom_u32(); @@ -665,6 +667,8 @@ static int ext4_ioctl_setflags(struct inode *inode, ext4_set_inode_flags(inode, false); inode->i_ctime = current_time(inode); + if (IS_I_VERSION(inode)) + inode_inc_iversion(inode); err = ext4_mark_iloc_dirty(handle, inode, &iloc); flags_err: @@ -775,6 +779,8 @@ static int ext4_ioctl_setproject(struct inode *inode, __u32 projid) EXT4_I(inode)->i_projid = kprojid; inode->i_ctime = current_time(inode); + if (IS_I_VERSION(inode)) + inode_inc_iversion(inode); out_dirty: rc = ext4_mark_iloc_dirty(handle, inode, &iloc); if (!err) @@ -1257,6 +1263,8 @@ static long __ext4_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) err = ext4_reserve_inode_write(handle, inode, &iloc); if (err == 0) { inode->i_ctime = current_time(inode); + if (IS_I_VERSION(inode)) + inode_inc_iversion(inode); inode->i_generation = generation; err = ext4_mark_iloc_dirty(handle, inode, &iloc); } diff --git a/fs/ext4/move_extent.c b/fs/ext4/move_extent.c index 701f1d6a217f..d73ab3153218 100644 --- a/fs/ext4/move_extent.c +++ b/fs/ext4/move_extent.c @@ -6,6 +6,7 @@ */ #include +#include #include #include #include @@ -683,6 +684,13 @@ ext4_move_extents(struct file *o_filp, struct file *d_filp, __u64 orig_blk, break; o_start += cur_len; d_start += cur_len; + + orig_inode->i_ctime = current_time(orig_inode); + donor_inode->i_ctime = current_time(donor_inode); + if (IS_I_VERSION(orig_inode)) + inode_inc_iversion(orig_inode); + if (IS_I_VERSION(donor_inode)) + inode_inc_iversion(donor_inode); } *moved_len = o_start - orig_blk; if (*moved_len > len) diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c index 533216e80fa2..e975442e4ab2 100644 --- a/fs/ext4/xattr.c +++ b/fs/ext4/xattr.c @@ -2412,6 +2412,8 @@ ext4_xattr_set_handle(handle_t *handle, struct inode *inode, int name_index, if (!error) { ext4_xattr_update_super_block(handle, inode->i_sb); inode->i_ctime = current_time(inode); + if (IS_I_VERSION(inode)) + inode_inc_iversion(inode); if (!value) no_expand = 0; error = ext4_mark_iloc_dirty(handle, inode, &is.iloc); From patchwork Wed Sep 7 11:33:15 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeff Layton X-Patchwork-Id: 12968899 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 5F54DC38145 for ; Wed, 7 Sep 2022 11:33:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230173AbiIGLdm (ORCPT ); Wed, 7 Sep 2022 07:33:42 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36946 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230046AbiIGLda (ORCPT ); Wed, 7 Sep 2022 07:33:30 -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 BE578B657B; Wed, 7 Sep 2022 04:33:29 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 4F7046185F; Wed, 7 Sep 2022 11:33:29 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 98D8FC43470; Wed, 7 Sep 2022 11:33:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1662550408; bh=IzzXtBCpeW0V7DZyAeHDWcHqRWlFJ6S9oN4MfeiOaLc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=HJrMX/1KD+RerbBwLxkFpBM0Xe9zt93Mtq5iBFPmLIjc4lS+Ni8Qb+gHSYfbarOM5 C2C35oI7qcDIaKqxRjh+pENI6eNO9uxP3JUuJUQxx1Sro3Sk0l9MArXpci8CJ6xXM7 kE5MJhtlr718uLKbHc9iQgv2pXC99Wpb/fIw+fusW8BcvCX+pvzPtf0otUWoJfjXpS Z2EjZJDh6vK4zHkkhbwstp/56K62sya/X/6yM3Suqzt7GlsZK/a2yEH7KyN8ja4Cm3 /rcY5YQs7aOmXNrMtYZp0/TvbfoMjxPhICbXXtfb19sr/DqFkvZB4fRiI1DyeK2LR+ +4uZbPlXn1Ifg== From: Jeff Layton To: tytso@mit.edu, adilger.kernel@dilger.ca, djwong@kernel.org, david@fromorbit.com, trondmy@hammerspace.com, neilb@suse.de, viro@zeniv.linux.org.uk, zohar@linux.ibm.com, xiubli@redhat.com, chuck.lever@oracle.com, lczerner@redhat.com, jack@suse.cz, bfields@fieldses.org, brauner@kernel.org, fweimer@redhat.com Cc: linux-api@vger.kernel.org, linux-btrfs@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, ceph-devel@vger.kernel.org, linux-ext4@vger.kernel.org, linux-nfs@vger.kernel.org, linux-xfs@vger.kernel.org, Benjamin Coddington , Christoph Hellwig Subject: [PATCH v4 3/6] ext4: unconditionally enable the i_version counter Date: Wed, 7 Sep 2022 07:33:15 -0400 Message-Id: <20220907113318.21810-4-jlayton@kernel.org> X-Mailer: git-send-email 2.37.3 In-Reply-To: <20220907113318.21810-1-jlayton@kernel.org> References: <20220907113318.21810-1-jlayton@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org The original i_version implementation was pretty expensive, requiring a log flush on every change. Because of this, it was gated behind a mount option (implemented via the MS_I_VERSION mountoption flag). Commit ae5e165d855d (fs: new API for handling inode->i_version) made the i_version flag much less expensive, so there is no longer a performance penalty from enabling it. xfs and btrfs already enable it unconditionally when the on-disk format can support it. Have ext4 ignore the SB_I_VERSION flag, and just enable it unconditionally. While we're in here, remove the handling of Opt_i_version as well since it's due for deprecation anyway. Ideally, we'd couple this change with a way to disable the i_version counter (just in case), but the way the iversion mount option was implemented makes that difficult to do. We'd need to add a new mount option altogether or do something with tune2fs. That's probably best left to later patches if it turns out to be needed. Cc: Dave Chinner Cc: Lukas Czerner Cc: Benjamin Coddington Cc: Christoph Hellwig Cc: Darrick J. Wong Signed-off-by: Jeff Layton --- fs/ext4/inode.c | 2 +- fs/ext4/ioctl.c | 12 ++++-------- fs/ext4/move_extent.c | 6 ++---- fs/ext4/super.c | 13 ++++--------- fs/ext4/xattr.c | 3 +-- 5 files changed, 12 insertions(+), 24 deletions(-) diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index aa37bce4c541..6ef37269e7c0 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -5342,7 +5342,7 @@ int ext4_setattr(struct user_namespace *mnt_userns, struct dentry *dentry, int error, rc = 0; int orphan = 0; const unsigned int ia_valid = attr->ia_valid; - bool inc_ivers = IS_I_VERSION(inode); + bool inc_ivers = true; if (unlikely(ext4_forced_shutdown(EXT4_SB(inode->i_sb)))) return -EIO; diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c index 60e77ae9342d..ad3a294a88eb 100644 --- a/fs/ext4/ioctl.c +++ b/fs/ext4/ioctl.c @@ -452,8 +452,7 @@ static long swap_inode_boot_loader(struct super_block *sb, swap_inode_data(inode, inode_bl); inode->i_ctime = inode_bl->i_ctime = current_time(inode); - if (IS_I_VERSION(inode)) - inode_inc_iversion(inode); + inode_inc_iversion(inode); inode->i_generation = prandom_u32(); inode_bl->i_generation = prandom_u32(); @@ -667,8 +666,7 @@ static int ext4_ioctl_setflags(struct inode *inode, ext4_set_inode_flags(inode, false); inode->i_ctime = current_time(inode); - if (IS_I_VERSION(inode)) - inode_inc_iversion(inode); + inode_inc_iversion(inode); err = ext4_mark_iloc_dirty(handle, inode, &iloc); flags_err: @@ -779,8 +777,7 @@ static int ext4_ioctl_setproject(struct inode *inode, __u32 projid) EXT4_I(inode)->i_projid = kprojid; inode->i_ctime = current_time(inode); - if (IS_I_VERSION(inode)) - inode_inc_iversion(inode); + inode_inc_iversion(inode); out_dirty: rc = ext4_mark_iloc_dirty(handle, inode, &iloc); if (!err) @@ -1263,8 +1260,7 @@ static long __ext4_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) err = ext4_reserve_inode_write(handle, inode, &iloc); if (err == 0) { inode->i_ctime = current_time(inode); - if (IS_I_VERSION(inode)) - inode_inc_iversion(inode); + inode_inc_iversion(inode); inode->i_generation = generation; err = ext4_mark_iloc_dirty(handle, inode, &iloc); } diff --git a/fs/ext4/move_extent.c b/fs/ext4/move_extent.c index d73ab3153218..285700b00d38 100644 --- a/fs/ext4/move_extent.c +++ b/fs/ext4/move_extent.c @@ -687,10 +687,8 @@ ext4_move_extents(struct file *o_filp, struct file *d_filp, __u64 orig_blk, orig_inode->i_ctime = current_time(orig_inode); donor_inode->i_ctime = current_time(donor_inode); - if (IS_I_VERSION(orig_inode)) - inode_inc_iversion(orig_inode); - if (IS_I_VERSION(donor_inode)) - inode_inc_iversion(donor_inode); + inode_inc_iversion(orig_inode); + inode_inc_iversion(donor_inode); } *moved_len = o_start - orig_blk; if (*moved_len > len) diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 9a66abcca1a8..e7cf5361245a 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -1585,7 +1585,7 @@ enum { Opt_inlinecrypt, Opt_usrjquota, Opt_grpjquota, Opt_quota, Opt_noquota, Opt_barrier, Opt_nobarrier, Opt_err, - Opt_usrquota, Opt_grpquota, Opt_prjquota, Opt_i_version, + Opt_usrquota, Opt_grpquota, Opt_prjquota, Opt_dax, Opt_dax_always, Opt_dax_inode, Opt_dax_never, Opt_stripe, Opt_delalloc, Opt_nodelalloc, Opt_warn_on_error, Opt_nowarn_on_error, Opt_mblk_io_submit, Opt_debug_want_extra_isize, @@ -1694,7 +1694,6 @@ static const struct fs_parameter_spec ext4_param_specs[] = { fsparam_flag ("barrier", Opt_barrier), fsparam_u32 ("barrier", Opt_barrier), fsparam_flag ("nobarrier", Opt_nobarrier), - fsparam_flag ("i_version", Opt_i_version), fsparam_flag ("dax", Opt_dax), fsparam_enum ("dax", Opt_dax_type, ext4_param_dax), fsparam_u32 ("stripe", Opt_stripe), @@ -2140,11 +2139,6 @@ static int ext4_parse_param(struct fs_context *fc, struct fs_parameter *param) case Opt_abort: ctx_set_mount_flag(ctx, EXT4_MF_FS_ABORTED); return 0; - case Opt_i_version: - ext4_msg(NULL, KERN_WARNING, deprecated_msg, param->key, "5.20"); - ext4_msg(NULL, KERN_WARNING, "Use iversion instead\n"); - ctx_set_flags(ctx, SB_I_VERSION); - return 0; case Opt_inlinecrypt: #ifdef CONFIG_FS_ENCRYPTION_INLINE_CRYPT ctx_set_flags(ctx, SB_INLINECRYPT); @@ -2970,8 +2964,6 @@ static int _ext4_show_options(struct seq_file *seq, struct super_block *sb, SEQ_OPTS_PRINT("min_batch_time=%u", sbi->s_min_batch_time); if (nodefs || sbi->s_max_batch_time != EXT4_DEF_MAX_BATCH_TIME) SEQ_OPTS_PRINT("max_batch_time=%u", sbi->s_max_batch_time); - if (sb->s_flags & SB_I_VERSION) - SEQ_OPTS_PUTS("i_version"); if (nodefs || sbi->s_stripe) SEQ_OPTS_PRINT("stripe=%lu", sbi->s_stripe); if (nodefs || EXT4_MOUNT_DATA_FLAGS & @@ -4640,6 +4632,9 @@ static int __ext4_fill_super(struct fs_context *fc, struct super_block *sb) sb->s_flags = (sb->s_flags & ~SB_POSIXACL) | (test_opt(sb, POSIX_ACL) ? SB_POSIXACL : 0); + /* i_version is always enabled now */ + sb->s_flags |= SB_I_VERSION; + if (le32_to_cpu(es->s_rev_level) == EXT4_GOOD_OLD_REV && (ext4_has_compat_features(sb) || ext4_has_ro_compat_features(sb) || diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c index e975442e4ab2..36d6ba7190b6 100644 --- a/fs/ext4/xattr.c +++ b/fs/ext4/xattr.c @@ -2412,8 +2412,7 @@ ext4_xattr_set_handle(handle_t *handle, struct inode *inode, int name_index, if (!error) { ext4_xattr_update_super_block(handle, inode->i_sb); inode->i_ctime = current_time(inode); - if (IS_I_VERSION(inode)) - inode_inc_iversion(inode); + inode_inc_iversion(inode); if (!value) no_expand = 0; error = ext4_mark_iloc_dirty(handle, inode, &is.iloc); From patchwork Wed Sep 7 11:33:16 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeff Layton X-Patchwork-Id: 12968900 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 D8CA7C6FA8C for ; Wed, 7 Sep 2022 11:33:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230145AbiIGLdj (ORCPT ); Wed, 7 Sep 2022 07:33:39 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36990 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230089AbiIGLdd (ORCPT ); Wed, 7 Sep 2022 07:33:33 -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 22679B6D01; Wed, 7 Sep 2022 04:33:32 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id B654A6185F; Wed, 7 Sep 2022 11:33:31 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id F0801C4347C; Wed, 7 Sep 2022 11:33:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1662550411; bh=UtpmRgctuu/Uj5QkJbhrsp/EEwNxyiqmQFCHXeh1350=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=gEjTJB2eeaSYFBLsRymBFqIkjtbgN0EvVQZJxP0JbjBcr0cQYf1GTTQnoAquh1sPV XoLQKuHzKjXpxHuLB882sFfNpVGL7Eb7lsNd1X3d9vEfCv5ndSlM2Bwnmp43dpwmWe zDusx1LG8MRqghzMJk8hXwFkEP9c/f+1tazGGZuoyGkc/VbfbYXC8kElAG4TFTy/vx tD60GUQvEBofEb+zf/aLJigxZNqoa06xpNZ37zTkf15h3iWfFE51BHdTNMO+MqN+2d ud3aGQlz7Sz1LNbJxb+CMzML7D7VyIOQnuvJXQfo0Q3qskmq1C4werVKbMJS5PhbN2 8DBGmeCN2w9Ag== From: Jeff Layton To: tytso@mit.edu, adilger.kernel@dilger.ca, djwong@kernel.org, david@fromorbit.com, trondmy@hammerspace.com, neilb@suse.de, viro@zeniv.linux.org.uk, zohar@linux.ibm.com, xiubli@redhat.com, chuck.lever@oracle.com, lczerner@redhat.com, jack@suse.cz, bfields@fieldses.org, brauner@kernel.org, fweimer@redhat.com Cc: linux-api@vger.kernel.org, linux-btrfs@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, ceph-devel@vger.kernel.org, linux-ext4@vger.kernel.org, linux-nfs@vger.kernel.org, linux-xfs@vger.kernel.org, Jeff Layton , David Howells , Frank Filz Subject: [PATCH v4 4/6] vfs: report an inode version in statx for IS_I_VERSION inodes Date: Wed, 7 Sep 2022 07:33:16 -0400 Message-Id: <20220907113318.21810-5-jlayton@kernel.org> X-Mailer: git-send-email 2.37.3 In-Reply-To: <20220907113318.21810-1-jlayton@kernel.org> References: <20220907113318.21810-1-jlayton@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org From: Jeff Layton The NFS server and IMA both rely heavily on the i_version counter, but it's largely invisible to userland, which makes it difficult to test its behavior. This value would also be of use to userland NFS servers, and other applications that want a reliable way to know whether there might have been an explicit change to an inode since they last checked. Claim one of the spare fields in struct statx to hold a 64-bit inode version attribute. This value must change with any explicit, observeable metadata or data change. Note that atime updates are excluded from this, unless it is due to an explicit change via utimes or similar mechanism. When statx requests this attribute on an IS_I_VERSION inode, do an inode_query_iversion and fill the result in the field. Also, update the test-statx.c program to display the inode version and the mountid. Cc: David Howells Cc: Frank Filz Signed-off-by: Jeff Layton --- fs/stat.c | 7 +++++++ include/linux/stat.h | 1 + include/uapi/linux/stat.h | 3 ++- samples/vfs/test-statx.c | 8 ++++++-- 4 files changed, 16 insertions(+), 3 deletions(-) diff --git a/fs/stat.c b/fs/stat.c index 9ced8860e0f3..d892909836aa 100644 --- a/fs/stat.c +++ b/fs/stat.c @@ -17,6 +17,7 @@ #include #include #include +#include #include #include @@ -118,6 +119,11 @@ int vfs_getattr_nosec(const struct path *path, struct kstat *stat, stat->attributes_mask |= (STATX_ATTR_AUTOMOUNT | STATX_ATTR_DAX); + if ((request_mask & STATX_INO_VERSION) && IS_I_VERSION(inode)) { + stat->result_mask |= STATX_INO_VERSION; + stat->ino_version = inode_query_iversion(inode); + } + mnt_userns = mnt_user_ns(path->mnt); if (inode->i_op->getattr) return inode->i_op->getattr(mnt_userns, path, stat, @@ -611,6 +617,7 @@ cp_statx(const struct kstat *stat, struct statx __user *buffer) tmp.stx_dev_major = MAJOR(stat->dev); tmp.stx_dev_minor = MINOR(stat->dev); tmp.stx_mnt_id = stat->mnt_id; + tmp.stx_ino_version = stat->ino_version; return copy_to_user(buffer, &tmp, sizeof(tmp)) ? -EFAULT : 0; } diff --git a/include/linux/stat.h b/include/linux/stat.h index 7df06931f25d..9cd77eb7bc1a 100644 --- a/include/linux/stat.h +++ b/include/linux/stat.h @@ -50,6 +50,7 @@ struct kstat { struct timespec64 btime; /* File creation time */ u64 blocks; u64 mnt_id; + u64 ino_version; }; #endif diff --git a/include/uapi/linux/stat.h b/include/uapi/linux/stat.h index 1500a0f58041..48d9307d7f31 100644 --- a/include/uapi/linux/stat.h +++ b/include/uapi/linux/stat.h @@ -124,7 +124,7 @@ struct statx { __u32 stx_dev_minor; /* 0x90 */ __u64 stx_mnt_id; - __u64 __spare2; + __u64 stx_ino_version; /* Inode change attribute */ /* 0xa0 */ __u64 __spare3[12]; /* Spare space for future expansion */ /* 0x100 */ @@ -152,6 +152,7 @@ struct statx { #define STATX_BASIC_STATS 0x000007ffU /* The stuff in the normal stat struct */ #define STATX_BTIME 0x00000800U /* Want/got stx_btime */ #define STATX_MNT_ID 0x00001000U /* Got stx_mnt_id */ +#define STATX_INO_VERSION 0x00002000U /* Want/got stx_change_attr */ #define STATX__RESERVED 0x80000000U /* Reserved for future struct statx expansion */ diff --git a/samples/vfs/test-statx.c b/samples/vfs/test-statx.c index 49c7a46cee07..23e68036fdfb 100644 --- a/samples/vfs/test-statx.c +++ b/samples/vfs/test-statx.c @@ -107,6 +107,8 @@ static void dump_statx(struct statx *stx) printf("Device: %-15s", buffer); if (stx->stx_mask & STATX_INO) printf(" Inode: %-11llu", (unsigned long long) stx->stx_ino); + if (stx->stx_mask & STATX_MNT_ID) + printf(" MountId: %llx", stx->stx_mnt_id); if (stx->stx_mask & STATX_NLINK) printf(" Links: %-5u", stx->stx_nlink); if (stx->stx_mask & STATX_TYPE) { @@ -145,7 +147,9 @@ static void dump_statx(struct statx *stx) if (stx->stx_mask & STATX_CTIME) print_time("Change: ", &stx->stx_ctime); if (stx->stx_mask & STATX_BTIME) - print_time(" Birth: ", &stx->stx_btime); + print_time("Birth: ", &stx->stx_btime); + if (stx->stx_mask & STATX_INO_VERSION) + printf("Inode Version: 0x%llx\n", stx->stx_ino_version); if (stx->stx_attributes_mask) { unsigned char bits, mbits; @@ -218,7 +222,7 @@ int main(int argc, char **argv) struct statx stx; int ret, raw = 0, atflag = AT_SYMLINK_NOFOLLOW; - unsigned int mask = STATX_BASIC_STATS | STATX_BTIME; + unsigned int mask = STATX_BASIC_STATS | STATX_BTIME | STATX_MNT_ID | STATX_INO_VERSION; for (argv++; *argv; argv++) { if (strcmp(*argv, "-F") == 0) { From patchwork Wed Sep 7 11:33:17 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeff Layton X-Patchwork-Id: 12968901 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 831EAC6FA8C for ; Wed, 7 Sep 2022 11:33:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230272AbiIGLd4 (ORCPT ); Wed, 7 Sep 2022 07:33:56 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37122 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230125AbiIGLdh (ORCPT ); Wed, 7 Sep 2022 07:33:37 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 20049B6D1E; Wed, 7 Sep 2022 04:33:36 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id B39AAB81C59; Wed, 7 Sep 2022 11:33:34 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 689E9C433D7; Wed, 7 Sep 2022 11:33:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1662550413; bh=1162YHqQOXHMdxaWiIckiDPTZi/TKUxuxhQhhNkMobE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=pohJqq09Kn9ApI2WZGb1NP/4TZdPvpJgeFDh1l6eiXnKGOr/l1U3WeAmnmiRCLetw 6xVqC4EEmZTyqgk7ONac4OLtcoLIVqhosRiTLuralL3+2AbruyZBbmAHZ3Jb2JZDvG 4sUMyKl6c6hDdaBs4ZXoNL0QcwEIG/LMBzICJL2zeOnc3pgrwTjPOLauRWi+P8c0+w jr+b/P1a313VrbxzBTHARDTHszvlvlu9ycZA/xf8pvYep6XkpkAoqc45XOIRA+2LPF R4WaoCvHYwLRrKygWuIkmEK7btXl6BlwoeHbveW24INOaWs750zo7hubjCcvkyq0xf QEHC00b1qf3gg== From: Jeff Layton To: tytso@mit.edu, adilger.kernel@dilger.ca, djwong@kernel.org, david@fromorbit.com, trondmy@hammerspace.com, neilb@suse.de, viro@zeniv.linux.org.uk, zohar@linux.ibm.com, xiubli@redhat.com, chuck.lever@oracle.com, lczerner@redhat.com, jack@suse.cz, bfields@fieldses.org, brauner@kernel.org, fweimer@redhat.com Cc: linux-api@vger.kernel.org, linux-btrfs@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, ceph-devel@vger.kernel.org, linux-ext4@vger.kernel.org, linux-nfs@vger.kernel.org, linux-xfs@vger.kernel.org Subject: [PATCH v4 5/6] nfs: report the inode version in statx if requested Date: Wed, 7 Sep 2022 07:33:17 -0400 Message-Id: <20220907113318.21810-6-jlayton@kernel.org> X-Mailer: git-send-email 2.37.3 In-Reply-To: <20220907113318.21810-1-jlayton@kernel.org> References: <20220907113318.21810-1-jlayton@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org Allow NFS to report the i_version in statx. Since the cost to fetch it is relatively cheap, do it unconditionally and just set the flag if it looks like it's valid. Signed-off-by: Jeff Layton --- fs/nfs/inode.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c index bea7c005119c..88c732a5c821 100644 --- a/fs/nfs/inode.c +++ b/fs/nfs/inode.c @@ -830,6 +830,8 @@ static u32 nfs_get_valid_attrmask(struct inode *inode) reply_mask |= STATX_UID | STATX_GID; if (!(cache_validity & NFS_INO_INVALID_BLOCKS)) reply_mask |= STATX_BLOCKS; + if (!(cache_validity & NFS_INO_INVALID_CHANGE)) + reply_mask |= STATX_INO_VERSION; return reply_mask; } @@ -848,7 +850,7 @@ int nfs_getattr(struct user_namespace *mnt_userns, const struct path *path, request_mask &= STATX_TYPE | STATX_MODE | STATX_NLINK | STATX_UID | STATX_GID | STATX_ATIME | STATX_MTIME | STATX_CTIME | - STATX_INO | STATX_SIZE | STATX_BLOCKS; + STATX_INO | STATX_SIZE | STATX_BLOCKS | STATX_INO_VERSION; if ((query_flags & AT_STATX_DONT_SYNC) && !force_sync) { if (readdirplus_enabled) @@ -877,7 +879,7 @@ int nfs_getattr(struct user_namespace *mnt_userns, const struct path *path, /* Is the user requesting attributes that might need revalidation? */ if (!(request_mask & (STATX_MODE|STATX_NLINK|STATX_ATIME|STATX_CTIME| STATX_MTIME|STATX_UID|STATX_GID| - STATX_SIZE|STATX_BLOCKS))) + STATX_SIZE|STATX_BLOCKS|STATX_INO_VERSION))) goto out_no_revalidate; /* Check whether the cached attributes are stale */ @@ -915,6 +917,7 @@ int nfs_getattr(struct user_namespace *mnt_userns, const struct path *path, generic_fillattr(&init_user_ns, inode, stat); stat->ino = nfs_compat_user_ino64(NFS_FILEID(inode)); + stat->ino_version = inode_peek_iversion_raw(inode); if (S_ISDIR(inode->i_mode)) stat->blksize = NFS_SERVER(inode)->dtsize; out: From patchwork Wed Sep 7 11:33:18 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeff Layton X-Patchwork-Id: 12968902 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 86714C54EE9 for ; Wed, 7 Sep 2022 11:34:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230305AbiIGLeE (ORCPT ); Wed, 7 Sep 2022 07:34:04 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37160 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230131AbiIGLdh (ORCPT ); Wed, 7 Sep 2022 07:33:37 -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 BAA10B6D3B; Wed, 7 Sep 2022 04:33:36 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 2A5366187D; Wed, 7 Sep 2022 11:33:36 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9A775C4347C; Wed, 7 Sep 2022 11:33:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1662550415; bh=bADt1iW34YbhBu0nCRLgIJOflnIt9uISyZ+7TvMIyC0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=LIHpAJkbrDAVtPfHWfF4I7zF2vabNDa5VrfuVkaXm8jSr1TXUmi5JMMK82FS6JNbE t3hJ5xiaYPXg6i29gLuGo6NtwTy0OQznk7/4YWxsUtA6/fqfQopX1SfJ1rv5ABYlvk ZmXNLySTVMcIX6YjV6wgjm1VNaGpIb2u94deAfag9SZVsyBzbksFTdXCCBJB1Pz7Lj 3Xe2KDEQwJKi9NfeerWlkmb+5SkHy5xeKSjfcD+hm6sbS+NfNNJhp9dNdop1wLehL8 E7Ph4hYbZZ1zWxVAqLwpGpx5szLoT9CLkuodddgZF84WqyigcF2pxuyFBtv80uMjqH 4xKGMepbha3Qg== From: Jeff Layton To: tytso@mit.edu, adilger.kernel@dilger.ca, djwong@kernel.org, david@fromorbit.com, trondmy@hammerspace.com, neilb@suse.de, viro@zeniv.linux.org.uk, zohar@linux.ibm.com, xiubli@redhat.com, chuck.lever@oracle.com, lczerner@redhat.com, jack@suse.cz, bfields@fieldses.org, brauner@kernel.org, fweimer@redhat.com Cc: linux-api@vger.kernel.org, linux-btrfs@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, ceph-devel@vger.kernel.org, linux-ext4@vger.kernel.org, linux-nfs@vger.kernel.org, linux-xfs@vger.kernel.org Subject: [PATCH v4 6/6] ceph: fill in the change attribute in statx requests Date: Wed, 7 Sep 2022 07:33:18 -0400 Message-Id: <20220907113318.21810-7-jlayton@kernel.org> X-Mailer: git-send-email 2.37.3 In-Reply-To: <20220907113318.21810-1-jlayton@kernel.org> References: <20220907113318.21810-1-jlayton@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org When statx requests the change attribute, request the full gamut of caps (similarly to how ctime is handled). When the change attribute seems to be valid, return it in the ino_version field. Reviewed-by: Xiubo Li Signed-off-by: Jeff Layton --- fs/ceph/inode.c | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-) diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c index 42351d7a0dd6..ccc926a7dcb0 100644 --- a/fs/ceph/inode.c +++ b/fs/ceph/inode.c @@ -2415,10 +2415,10 @@ static int statx_to_caps(u32 want, umode_t mode) { int mask = 0; - if (want & (STATX_MODE|STATX_UID|STATX_GID|STATX_CTIME|STATX_BTIME)) + if (want & (STATX_MODE|STATX_UID|STATX_GID|STATX_CTIME|STATX_BTIME|STATX_INO_VERSION)) mask |= CEPH_CAP_AUTH_SHARED; - if (want & (STATX_NLINK|STATX_CTIME)) { + if (want & (STATX_NLINK|STATX_CTIME|STATX_INO_VERSION)) { /* * The link count for directories depends on inode->i_subdirs, * and that is only updated when Fs caps are held. @@ -2429,11 +2429,10 @@ static int statx_to_caps(u32 want, umode_t mode) mask |= CEPH_CAP_LINK_SHARED; } - if (want & (STATX_ATIME|STATX_MTIME|STATX_CTIME|STATX_SIZE| - STATX_BLOCKS)) + if (want & (STATX_ATIME|STATX_MTIME|STATX_CTIME|STATX_SIZE|STATX_BLOCKS|STATX_INO_VERSION)) mask |= CEPH_CAP_FILE_SHARED; - if (want & (STATX_CTIME)) + if (want & (STATX_CTIME|STATX_INO_VERSION)) mask |= CEPH_CAP_XATTR_SHARED; return mask; @@ -2475,6 +2474,11 @@ int ceph_getattr(struct user_namespace *mnt_userns, const struct path *path, valid_mask |= STATX_BTIME; } + if (request_mask & STATX_INO_VERSION) { + stat->ino_version = inode_peek_iversion_raw(inode); + valid_mask |= STATX_INO_VERSION; + } + if (ceph_snap(inode) == CEPH_NOSNAP) stat->dev = inode->i_sb->s_dev; else