On Tue, Mar 1, 2022 at 11:15 PM David Laight <[email protected]> wrote: > From: Denys Vlasenko > > and a separate "spawn 40k 'sleep 0.03'" loop > > seems to indicate that openat(fd, ".") on the exited > > /proc/PID fails, and continues to fail > > even if another process with this PID exists > > again (pid was reused). > > Which kernel? > That may not fail on pre-pidfd kernels. > There were some discussions on the linux kernel mailing list > that I half followed.
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