On Mon, Feb 26, 2018 at 12:02:25PM +0300, Pavel Emelyanov wrote: > On 02/21/2018 03:44 AM, Andrew Morton wrote: > > On Tue, 9 Jan 2018 08:30:49 +0200 Mike Rapoport <rppt@xxxxxxxxxxxxxxxxxx> 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? Well, process_vm_readv itself is quite popular, it's used by debuggers nowadays, see e.g. $ strace -qq -esignal=none -eprocess_vm_readv strace -qq -o/dev/null cat /dev/null -- ldv
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