linux-kernel - Re: [PATCH v4 03/11] fs: Initial atomic write support

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Message-ID: <de554783-f9da-4fc5-aaa5-6fde74c1c728@oracle.com>
Date: Tue, 20 Feb 2024 08:13:59 +0000
From: John Garry <john.g.garry@...cle.com>
To: dsterba@...e.cz
Cc: axboe@...nel.dk, kbusch@...nel.org, hch@....de, sagi@...mberg.me,
        jejb@...ux.ibm.com, martin.petersen@...cle.com, djwong@...nel.org,
        viro@...iv.linux.org.uk, brauner@...nel.org, dchinner@...hat.com,
        jack@...e.cz, 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,
        Prasad Singamsetty <prasad.singamsetty@...cle.com>
Subject: Re: [PATCH v4 03/11] fs: Initial atomic write support

On 19/02/2024 19:16, David Sterba wrote:
> On Mon, Feb 19, 2024 at 01:01:01PM +0000, John Garry wrote:
>> From: Prasad Singamsetty<prasad.singamsetty@...cle.com>
>> --- 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)0x00000040)
> Should this be 0x20 so it's the next bit after RWF_APPEND?

Support for new flag RWF_NOAPPEND - which has value 0x20 - has been 
picked up on the vfs tree for 6.9 .

I had been just basing my series on Linus' release so far while also 
trying to anticipate any merge issue.

Thanks,
John