linux-kernel - Re: [PATCH v2 05/16] fs: Add RWF_ATOMIC and IOCB

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Date: Mon, 22 Jan 2024 08:29:27 +0000
From: John Garry <john.g.garry@...cle.com>
To: viro@...iv.linux.org.uk, brauner@...nel.org, jack@...e.cz
Cc: linux-block@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-nvme@...ts.infradead.org, linux-xfs@...r.kernel.org,
        linux-fsdevel@...r.kernel.org, tytso@....edu, jbongio@...gle.com,
        linux-scsi@...r.kernel.org, ming.lei@...hat.com, ojaswin@...ux.ibm.com,
        bvanassche@....org, Prasad Singamsetty <prasad.singamsetty@...cle.com>,
        dchinner@...hat.com, djwong@...nel.org, axboe@...nel.dk,
        kbusch@...nel.org, hch@....de, sagi@...mberg.me, jejb@...ux.ibm.com,
        martin.petersen@...cle.com
Subject: Re: [PATCH v2 05/16] fs: Add RWF_ATOMIC and IOCB_ATOMIC flags for
 atomic write support

On 12/12/2023 11:08, John Garry wrote:
> --- a/include/uapi/linux/fs.h
> +++ b/include/uapi/linux/fs.h
> @@ -301,9 +301,12 @@ typedef int __bitwise __kernel_rwf_t;
>   /* per-IO O_APPEND */
>   #define RWF_APPEND	((__force __kernel_rwf_t)0x00000010)
>   
> +/* Atomic Write */
> +#define RWF_ATOMIC	((__force __kernel_rwf_t)0x00000020)
> +

vfs maintainers, due to 
https://lore.kernel.org/linux-fsdevel/20240119191053.GT22081@brightrain.aerifal.cx/T/#t, 
I now plan to change this value to 0x40.

Thanks,
John