From: "Darrick J. Wong" <djwong@kernel.org>
To: Jeffle Xu <jefflexu@linux.alibaba.com>
Cc: viro@zeniv.linux.org.uk, linux-fsdevel@vger.kernel.org,
linux-ext4@vger.kernel.org
Subject: Re: [PATCH] vfs: only allow SETFLAGS to set DAX flag on files and dirs
Date: Fri, 16 Jul 2021 09:20:17 -0700 [thread overview]
Message-ID: <20210716162017.GA22346@magnolia> (raw)
In-Reply-To: <20210716061951.81529-1-jefflexu@linux.alibaba.com>
On Fri, Jul 16, 2021 at 02:19:51PM +0800, Jeffle Xu wrote:
> This is similar to commit dbc77f31e58b ("vfs: only allow FSSETXATTR to
> set DAX flag on files and dirs").
>
> Though the underlying filesystems may have filtered invalid flags, e.g.,
> ext4_mask_flags() called in ext4_fileattr_set(), also check it in VFS
> layer.
>
> Signed-off-by: Jeffle Xu <jefflexu@linux.alibaba.com>
> ---
> fs/ioctl.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/fs/ioctl.c b/fs/ioctl.c
> index 1e2204fa9963..1fe73e148e2d 100644
> --- a/fs/ioctl.c
> +++ b/fs/ioctl.c
> @@ -835,7 +835,7 @@ static int fileattr_set_prepare(struct inode *inode,
> * It is only valid to set the DAX flag on regular files and
> * directories on filesystems.
> */
> - if ((fa->fsx_xflags & FS_XFLAG_DAX) &&
> + if ((fa->fsx_xflags & FS_XFLAG_DAX || fa->flags & FS_DAX_FL) &&
I thought we always had to surround flag tests with separate
parentheses...?
--D
> !(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode)))
> return -EINVAL;
>
> --
> 2.27.0
>
next prev parent reply other threads:[~2021-07-16 16:20 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-16 6:19 [PATCH] vfs: only allow SETFLAGS to set DAX flag on files and dirs Jeffle Xu
2021-07-16 16:20 ` Darrick J. Wong [this message]
2021-07-19 1:47 ` JeffleXu
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20210716162017.GA22346@magnolia \
--to=djwong@kernel.org \
--cc=jefflexu@linux.alibaba.com \
--cc=linux-ext4@vger.kernel.org \
--cc=linux-fsdevel@vger.kernel.org \
--cc=viro@zeniv.linux.org.uk \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).