On Mon 2018-11-05 13:22:05, Daniel Colascione wrote: > State explicitly that holding a /proc/pid file descriptor open does > not reserve the PID. Also note that in the event of PID reuse, these > open file descriptors refer to the old, now-dead process, and not the > new one that happens to be named the same numeric PID. > > Signed-off-by: Daniel Colascione <dancol@xxxxxxxxxx> > --- > Documentation/filesystems/proc.txt | 7 +++++++ > 1 file changed, 7 insertions(+) > > Moved paragraphed to start of /proc/pid section; added signed-off-by. > > diff --git a/Documentation/filesystems/proc.txt b/Documentation/filesystems/proc.txt > index 12a5e6e693b6..0b14460f721d 100644 > --- a/Documentation/filesystems/proc.txt > +++ b/Documentation/filesystems/proc.txt > @@ -125,6 +125,13 @@ process running on the system, which is named after the process ID (PID). > The link self points to the process reading the file system. Each process > subdirectory has the entries listed in Table 1-1. > > +Note that an open a file descriptor to /proc/<pid> or to any of its > +contained files or subdirectories does not prevent <pid> being reused > +for some other process in the event that <pid> exits. Operations on "does not" -> "may not"? We want to leave this unspecified, so that we can change it in future. Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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