Two new ways to read a file quickly
Two new ways to read a file quickly
Posted Mar 8, 2020 15:08 UTC (Sun) by pbonzini (subscriber, #60935)In reply to: Two new ways to read a file quickly by josh
Parent article: Two new ways to read a file quickly
Regarding 3 I think that's a mistake, O_SPECIFICFD to open and dup2 to close seems like a very easy way to manage pre-reserved file descriptors, even without the prctl.
Posted Mar 8, 2020 15:14 UTC (Sun)
by josh (subscriber, #17465)
[Link]
Two new ways to read a file quickly
Perhaps we could have a specialized "reserved" fd type, and use that instead of opening /dev/null, and only allow "overwriting" that.It would help to have a guaranteed continuous chunk of fds to allocate out of, though.