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    SubjectRe: [PATCH v5 0/4] vm: add a syscall to map a process memory into a pipe
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    On 02/21/2018 03:44 AM, Andrew Morton wrote:
    > On Tue, 9 Jan 2018 08:30:49 +0200 Mike Rapoport <rppt@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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