Re: [LSF/MM TOPIC] Future direction of DAX

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

 



Christoph Hellwig <hch@xxxxxxxxxxxxx> writes:

> On Tue, Jan 17, 2017 at 09:54:27AM -0500, Jeff Moyer wrote:
>> I spoke with Dave before the holidays, and he indicated that
>> PMEM_IMMUTABLE would be an acceptable solution to allowing applications
>> to flush data completely from userspace.  I know this subject has been
>> beaten to death, but would you mind just summarizing your opinion on
>> this one more time?  I'm guessing this will be something more easily
>> hashed out at LSF, though.
>
> Come up with a prototype that doesn't suck and allows all fs features to
> actually work.

OK, I'll take this to mean that PMEM_IMMUTABLE is a non-starter.
Perhaps synchronous page faults (or whatever you want to call it) would
work, but...

> And show an application that actually cares and shows benefits on
> publicly available real hardware.

This is the crux of the issue.

> Until then go away and stop wasting everyones time.

Fair enough.  It seems fairly likely that this sort of functionality
would provide a big benefit.  But I agree we should have a real-world
use case as proof.

Thanks,
Jeff
--
To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html



[Index of Archives]     [Linux Ext4 Filesystem]     [Union Filesystem]     [Filesystem Testing]     [Ceph Users]     [Ecryptfs]     [AutoFS]     [Kernel Newbies]     [Share Photos]     [Security]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux Cachefs]     [Reiser Filesystem]     [Linux RAID]     [Samba]     [Device Mapper]     [CEPH Development]
  Powered by Linux