linux-kernel - Re: [Patch v9 04/10] fs: Add initial atomic write support info to statx

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Date: Fri, 21 Jun 2024 07:57:12 +0200
From: Hannes Reinecke <hare@...e.de>
To: John Garry <john.g.garry@...cle.com>, axboe@...nel.dk, kbusch@...nel.org,
 hch@....de, sagi@...mberg.me, jejb@...ux.ibm.com,
 martin.petersen@...cle.com, viro@...iv.linux.org.uk, brauner@...nel.org,
 dchinner@...hat.com, jack@...e.cz
Cc: djwong@...nel.org, linux-block@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-nvme@...ts.infradead.org,
 linux-fsdevel@...r.kernel.org, tytso@....edu, jbongio@...gle.com,
 linux-scsi@...r.kernel.org, ojaswin@...ux.ibm.com, linux-aio@...ck.org,
 linux-btrfs@...r.kernel.org, io-uring@...r.kernel.org, nilay@...ux.ibm.com,
 ritesh.list@...il.com, willy@...radead.org, agk@...hat.com,
 snitzer@...nel.org, mpatocka@...hat.com, dm-devel@...ts.linux.dev,
 Prasad Singamsetty <prasad.singamsetty@...cle.com>
Subject: Re: [Patch v9 04/10] fs: Add initial atomic write support info to
 statx

On 6/20/24 14:53, John Garry wrote:
> From: Prasad Singamsetty <prasad.singamsetty@...cle.com>
> 
> Extend statx system call to return additional info for atomic write support
> support for a file.
> 
> Helper function generic_fill_statx_atomic_writes() can be used by FSes to
> fill in the relevant statx fields. For now atomic_write_segments_max will
> always be 1, otherwise some rules would need to be imposed on iovec length
> and alignment, which we don't want now.
> 
> Signed-off-by: Prasad Singamsetty <prasad.singamsetty@...cle.com>
> jpg: relocate bdev support to another patch
> Reviewed-by: "Darrick J. Wong" <djwong@...nel.org>
> Reviewed-by: Martin K. Petersen <martin.petersen@...cle.com>
> Signed-off-by: John Garry <john.g.garry@...cle.com>
> ---
>   fs/stat.c                 | 34 ++++++++++++++++++++++++++++++++++
>   include/linux/fs.h        |  3 +++
>   include/linux/stat.h      |  3 +++
>   include/uapi/linux/stat.h | 12 ++++++++++--
>   4 files changed, 50 insertions(+), 2 deletions(-)
> 
Reviewed-by: Hannes Reinecke <hare@...e.de>

Cheers,

Hannes
-- 
Dr. Hannes Reinecke                  Kernel Storage Architect
hare@...e.de                                +49 911 74053 688
SUSE Software Solutions GmbH, Frankenstr. 146, 90461 Nürnberg
HRB 36809 (AG Nürnberg), GF: I. Totev, A. McDonald, W. Knoblich