Re: [PATCH v7 0/5] vfs: Non-blockling buffered fs read (page cache only)

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

 



On Mon, Mar 30, 2015 at 2:54 PM, Andrew Morton
<akpm@xxxxxxxxxxxxxxxxxxxx> wrote:
> On Mon, 30 Mar 2015 00:40:20 -0700 Christoph Hellwig <hch@xxxxxxxxxxxxx> wrote:
>
>> On Fri, Mar 27, 2015 at 10:04:11AM -0700, Andrew Morton wrote:
>> > mm...  I don't think we should be adding placeholders to the kernel API
>> > to support code which hasn't been written, tested, reviewed, merged,
>> > etc.  It's possible none of this will ever happen and we end up with a
>> > syscall nobody needs or uses.  Plus it's always possible that during
>> > this development we decide the pwrite2() interface needs alteration but
>> > it's too late.
>> >
>> > What would be the downside of deferring pwrite2() until it's all
>> > implemented?
>>
>> It _is_ implemented.  I just decided to submit it separately as Miklos
>> already has to deal with enough bikeshedding for his feature that I
>> don't want to put the burden of dealing with the BS for the one I wrote
>> on him.
>
> afacit the only difference between this pwritev2() and the existing
> pwritev() is that pwritev2() interprets pos==-1 as "current position",
> which duplicates writev()?
>
> Unless I've missed something, there's no point in merging this
> pwritev2() and it would be better to separate this syscall out into a
> pwritev2() patchset which can be considered and merged separately.  For
> the reasons described above.
>

At the LSF/MM session, the agreement form the active participants
(James Bottomley, Ted Tso, Christoph, and I forget the last guy's
name) that we should ship both syscalls in the first patch. Personally
I don't care, but you're the only voice against it.

-- 
Milosz Tanski
CTO
16 East 34th Street, 15th floor
New York, NY 10016

p: 646-253-9055
e: milosz@xxxxxxxxx
--
To unsubscribe from this list: send the line "unsubscribe linux-arch" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html




[Index of Archives]     [Linux Kernel]     [Kernel Newbies]     [x86 Platform Driver]     [Netdev]     [Linux Wireless]     [Netfilter]     [Bugtraq]     [Linux Filesystems]     [Yosemite Discussion]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Samba]     [Device Mapper]

  Powered by Linux