On 02/21/2018 03:44 AM, Andrew Morton wrote:
> On Tue,  9 Jan 2018 08:30:49 +0200 Mike Rapoport <r...@linux.vnet.ibm.com> 
> wrote:
> 
>> This patches introduces new process_vmsplice system call that combines
>> functionality of process_vm_read and vmsplice.
> 
> All seems fairly strightforward.  The big question is: do we know that
> people will actually use this, and get sufficient value from it to
> justify its addition?

Yes, that's what bothers us a lot too :) I've tried to start with finding out 
if anyone 
used the sys_read/write_process_vm() calls, but failed :( Does anybody know how 
popular
these syscalls are? If its users operate on big amount of memory, they could 
benefit from
the proposed splice extension.

-- Pavel
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