From: Ritesh Harjani (IBM) <ritesh.list@gmail.com>
To: John Garry <john.g.garry@oracle.com>,
linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org
Cc: Ojaswin Mujoo <ojaswin@linux.ibm.com>, Jan Kara <jack@suse.cz>,
Theodore Ts'o <tytso@mit.edu>,
Matthew Wilcox <willy@infradead.org>,
"Darrick J . Wong" <djwong@kernel.org>,
Luis Chamberlain <mcgrof@kernel.org>,
linux-kernel@vger.kernel.org
Subject: Re: [RFC 4/8] ext4: Add statx and other atomic write helper routines
Date: Fri, 08 Mar 2024 13:40:19 +0530 [thread overview]
Message-ID: <87r0glp2j8.fsf@doe.com> (raw)
In-Reply-To: <e06621b2-8b33-41ec-a049-1befe83cdb5c@oracle.com>
John Garry <john.g.garry@oracle.com> writes:
> On 02/03/2024 07:42, Ritesh Harjani (IBM) wrote:
>> }
>>
>> + if (request_mask & STATX_WRITE_ATOMIC) {
>> + unsigned int fsawu_min = 0, fsawu_max = 0;
>> +
>> + /*
>> + * Get fsawu_[min|max] value which we can advertise to userspace
>> + * in statx call, if we support atomic writes using
>> + * EXT4_MF_ATOMIC_WRITE_FSAWU.
>> + */
>> + if (ext4_can_atomic_write_fsawu(inode->i_sb)) {
>
> To me, it does not make sense to fill this in unless
> EXT4_INODE_ATOMIC_WRITE is also set for the inode.
>
I was thinking advertising filesystem atomic write unit on an inode
could still be advertized. But I don't have any strong objection either.
We can advertize this values only when the inode has the atomic write
attribute enabled. I think this makes more sense.
Thanks
-ritesh
>> + ext4_atomic_write_fsawu(inode->i_sb, &fsawu_min,
>> + &fsawu_max);
>> + }
>> +
>> + generic_fill_statx_atomic_writes(stat, fsawu_min, fsawu_max);
>> + }
>> +
>> flags = ei->i_flags & EXT4_FL_USER_VISIBLE;
next prev parent reply other threads:[~2024-03-08 8:10 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-02 7:41 [RFC 0/9] ext4: Add direct-io atomic write support using fsawu Ritesh Harjani (IBM)
2024-03-02 7:41 ` [RFC 1/8] fs: Add FS_XFLAG_ATOMICWRITES flag Ritesh Harjani (IBM)
2024-03-02 7:41 ` [RFC 2/8] fs: Reserve inode flag FS_ATOMICWRITES_FL for atomic writes Ritesh Harjani (IBM)
2024-03-04 0:59 ` Dave Chinner
2024-03-08 7:19 ` Ojaswin Mujoo
2024-03-02 7:42 ` [RFC 3/8] iomap: Add atomic write support for direct-io Ritesh Harjani (IBM)
2024-03-04 1:16 ` Dave Chinner
2024-03-04 5:33 ` Ritesh Harjani
2024-03-04 8:49 ` John Garry
2024-03-04 10:31 ` Ritesh Harjani
2024-03-04 20:56 ` Dave Chinner
2024-03-02 7:42 ` [RFC 4/8] ext4: Add statx and other atomic write helper routines Ritesh Harjani (IBM)
2024-03-06 11:14 ` John Garry
2024-03-08 8:10 ` Ritesh Harjani [this message]
2024-03-02 7:42 ` [RFC 5/8] ext4: Adds direct-io atomic writes checks Ritesh Harjani (IBM)
2024-03-02 7:42 ` [RFC 6/8] ext4: Add an inode flag for atomic writes Ritesh Harjani (IBM)
2024-03-04 20:34 ` Dave Chinner
2024-03-08 8:02 ` Ritesh Harjani
2024-03-02 7:42 ` [RFC 7/8] ext4: Enable FMODE_CAN_ATOMIC_WRITE in open for direct-io Ritesh Harjani (IBM)
2024-03-02 7:42 ` [RFC 8/8] ext4: Adds atomic writes using fsawu Ritesh Harjani (IBM)
2024-03-02 7:42 ` [RFC 9/9] e2fsprogs/chattr: Supports atomic writes attribute Ritesh Harjani (IBM)
2024-03-06 11:22 ` [RFC 0/9] ext4: Add direct-io atomic write support using fsawu John Garry
2024-03-06 13:13 ` Ritesh Harjani
2024-03-08 20:25 ` [RFC] ext4: Add support for ext4_map_blocks_atomic() Ritesh Harjani (IBM)
2024-03-09 2:37 ` Ritesh Harjani
2024-03-13 18:40 ` John Garry
2024-03-14 15:52 ` Ritesh Harjani
2024-03-18 8:22 ` John Garry
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