[PATCH] copy_file_range: New function to copy file data

[Andreas Schwab]

On Nov 23 2017, Florian Weimer <fweimer@redhat.com> wrote:

> On 11/23/2017 04:39 PM, Andreas Schwab wrote:
>> On Nov 23 2017, Florian Weimer <fweimer@redhat.com> wrote:
>>
>>>> I don't think write can ever return 0 when writing more than zero bytes.
>>>
>>> I can drop the check.  With the Linux VFS layer, it is difficult to tell
>>> whether this condition can ever happen, and if it does, we would likely
>>> enter an infinite loop without the check.
>>  > Or we get the real error in the next loop.
>
> Tradition has it that it's a replacement for the ENOSPC condition,

A short write, yes, but not a zero write.

Andreas.

-- 
Andreas Schwab, SUSE Labs, schwab@suse.de
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