From: "Theodore Y. Ts'o" <tytso@mit.edu>
To: Xiao Yang <yangx.jy@cn.fujitsu.com>
Cc: linux-ext4@vger.kernel.org, darrick.wong@oracle.com,
ira.weiny@intel.com, jack@suse.cz
Subject: Re: [PATCH v2] ext4: Disallow modifying DAX inode flag if inline_data has been set
Date: Sat, 3 Oct 2020 00:13:21 -0400 [thread overview]
Message-ID: <20201003041321.GB23474@mit.edu> (raw)
In-Reply-To: <20200828084330.15776-1-yangx.jy@cn.fujitsu.com>
On Fri, Aug 28, 2020 at 04:43:30PM +0800, Xiao Yang wrote:
> inline_data is mutually exclusive to DAX so enabling both of them triggers
> the following issue:
> ------------------------------------------
> # mkfs.ext4 -F -O inline_data /dev/pmem1
> ...
> # mount /dev/pmem1 /mnt
> # echo 'test' >/mnt/file
> # lsattr -l /mnt/file
> /mnt/file Inline_Data
> # xfs_io -c "chattr +x" /mnt/file
> # xfs_io -c "lsattr -v" /mnt/file
> [dax] /mnt/file
> # umount /mnt
> # mount /dev/pmem1 /mnt
> # cat /mnt/file
> cat: /mnt/file: Numerical result out of range
> ------------------------------------------
>
> Fixes: b383a73f2b83 ("fs/ext4: Introduce DAX inode flag")
> Signed-off-by: Xiao Yang <yangx.jy@cn.fujitsu.com>
> Reviewed-by: Jan Kara <jack@suse.cz>
Applied, thanks.
- Ted
prev parent reply other threads:[~2020-10-03 4:13 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-28 8:43 [PATCH v2] ext4: Disallow modifying DAX inode flag if inline_data has been set Xiao Yang
2020-08-28 17:57 ` Ira Weiny
2020-08-29 7:27 ` Andreas Dilger
2020-09-17 3:29 ` Xiao Yang
2020-10-03 4:13 ` Theodore Y. Ts'o [this message]
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