From: Eric Biggers <ebiggers@kernel.org>
To: Gabriel Krisman Bertazi <krisman@suse.de>
Cc: viro@zeniv.linux.org.uk, jaegeuk@kernel.org, tytso@mit.edu,
amir73il@gmail.com, linux-ext4@vger.kernel.org,
linux-f2fs-devel@lists.sourceforge.net,
linux-fsdevel@vger.kernel.org, brauner@kernel.org
Subject: Re: [PATCH v7 00/10] Set casefold/fscrypt dentry operations through sb->s_d_op
Date: Mon, 26 Feb 2024 22:36:14 -0800 [thread overview]
Message-ID: <20240227063614.GB1126@sol.localdomain> (raw)
In-Reply-To: <20240221171412.10710-1-krisman@suse.de>
On Wed, Feb 21, 2024 at 12:14:02PM -0500, Gabriel Krisman Bertazi wrote:
>
> When case-insensitive and fscrypt were adapted to work together, we moved the
> code that sets the dentry operations for case-insensitive dentries(d_hash and
> d_compare) to happen from a helper inside ->lookup. This is because fscrypt
> wants to set d_revalidate only on some dentries, so it does it only for them in
> d_revalidate.
>
> But, case-insensitive hooks are actually set on all dentries in the filesystem,
> so the natural place to do it is through s_d_op and let d_alloc handle it [1].
> In addition, doing it inside the ->lookup is a problem for case-insensitive
> dentries that are not created through ->lookup, like those coming
> open-by-fhandle[2], which will not see the required d_ops.
>
> This patchset therefore reverts to using sb->s_d_op to set the dentry operations
> for case-insensitive filesystems. In order to set case-insensitive hooks early
> and not require every dentry to have d_revalidate in case-insensitive
> filesystems, it introduces a patch suggested by Al Viro to disable d_revalidate
> on some dentries on the fly.
>
> It survives fstests encrypt and quick groups without regressions. Based on
> v6.7-rc1.
>
> [1] https://lore.kernel.org/linux-fsdevel/20231123195327.GP38156@ZenIV/
> [2] https://lore.kernel.org/linux-fsdevel/20231123171255.GN38156@ZenIV/
>
> Gabriel Krisman Bertazi (10):
> ovl: Always reject mounting over case-insensitive directories
> fscrypt: Factor out a helper to configure the lookup dentry
> fscrypt: Drop d_revalidate for valid dentries during lookup
> fscrypt: Drop d_revalidate once the key is added
> libfs: Merge encrypted_ci_dentry_ops and ci_dentry_ops
> libfs: Add helper to choose dentry operations at mount-time
> ext4: Configure dentry operations at dentry-creation time
> f2fs: Configure dentry operations at dentry-creation time
> ubifs: Configure dentry operations at dentry-creation time
> libfs: Drop generic_set_encrypted_ci_d_ops
>
> fs/crypto/hooks.c | 15 ++++------
> fs/ext4/namei.c | 1 -
> fs/ext4/super.c | 1 +
> fs/f2fs/namei.c | 1 -
> fs/f2fs/super.c | 1 +
> fs/libfs.c | 62 +++++++++++---------------------------
> fs/overlayfs/params.c | 14 +++++++--
> fs/ubifs/dir.c | 1 -
> fs/ubifs/super.c | 1 +
> include/linux/fs.h | 11 ++++++-
> include/linux/fscrypt.h | 66 ++++++++++++++++++++++++++++++++++++-----
> 11 files changed, 105 insertions(+), 69 deletions(-)
>
Looks good,
Reviewed-by: Eric Biggers <ebiggers@google.com>
- Eric
next prev parent reply other threads:[~2024-02-27 6:36 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-21 17:14 [PATCH v7 00/10] Set casefold/fscrypt dentry operations through sb->s_d_op Gabriel Krisman Bertazi
2024-02-21 17:14 ` [PATCH v7 01/10] ovl: Always reject mounting over case-insensitive directories Gabriel Krisman Bertazi
2024-02-21 17:14 ` [PATCH v7 02/10] fscrypt: Factor out a helper to configure the lookup dentry Gabriel Krisman Bertazi
2024-02-21 17:14 ` [PATCH v7 03/10] fscrypt: Drop d_revalidate for valid dentries during lookup Gabriel Krisman Bertazi
2024-02-21 17:14 ` [PATCH v7 04/10] fscrypt: Drop d_revalidate once the key is added Gabriel Krisman Bertazi
2024-02-21 17:14 ` [PATCH v7 05/10] libfs: Merge encrypted_ci_dentry_ops and ci_dentry_ops Gabriel Krisman Bertazi
2024-02-21 17:14 ` [PATCH v7 06/10] libfs: Add helper to choose dentry operations at mount-time Gabriel Krisman Bertazi
2024-02-21 17:14 ` [PATCH v7 07/10] ext4: Configure dentry operations at dentry-creation time Gabriel Krisman Bertazi
2024-02-21 17:14 ` [PATCH v7 08/10] f2fs: " Gabriel Krisman Bertazi
2024-02-21 17:14 ` [PATCH v7 09/10] ubifs: " Gabriel Krisman Bertazi
2024-02-21 17:14 ` [PATCH v7 10/10] libfs: Drop generic_set_encrypted_ci_d_ops Gabriel Krisman Bertazi
2024-02-27 6:36 ` Eric Biggers [this message]
2024-02-27 21:28 ` [PATCH v7 00/10] Set casefold/fscrypt dentry operations through sb->s_d_op Gabriel Krisman Bertazi
2024-03-18 20:45 ` [f2fs-dev] " patchwork-bot+f2fs
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