Re: [PATCH 04/11] fs: add support for allowing applications to pass in write life time hints

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On 06/19/2017 12:27 AM, Christoph Hellwig wrote:
> On Sat, Jun 17, 2017 at 01:59:47PM -0600, Jens Axboe wrote:
>> Add four flags for the pwritev2(2) system call, allowing an application
>> to give the kernel a hint about what on-media life times can be
>> expected from a given write.
>>
>> The intent is for these values to be relative to each other, no
>> absolute meaning should be attached to these flag names.
>>
>> Set aside 3 bits in the iocb flags structure to carry this information
>> over from the pwritev2 RWF_WRITE_LIFE_* flags.
> 
> What is the strong use case for the per-I/O flags?  I'd much rather
> stick to fcntl only for now if we can.

Fine, I guess I should just have dusted off the 2 year old patchset,
as that was _exactly_ what that did.

-- 
Jens Axboe




[Index of Archives]     [Linux RAID]     [Linux SCSI]     [Linux ATA RAID]     [IDE]     [Linux Wireless]     [Linux Kernel]     [ATH6KL]     [Linux Bluetooth]     [Linux Netdev]     [Kernel Newbies]     [Security]     [Git]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Device Mapper]

  Powered by Linux