Alan Cox wrote:
>
> On Fri, 2002-08-09 at 09:48, Helge Hafting wrote:
> > Use 32-bit PID's, but with an additional rule for wraparound.
> > Simply wrap the PID when
> > (nextPID > 2*number_of_processes && nextPID > 30000)
> > The latter one just to avoid wrapping at 10 when there are
> > 5 processes.
>
> Its much simpler to put max_pid into /proc/sys/kernel. That way we can
> boot with 32000 process ids, which will ensure ancient stuff which has
> 16bit pid_t (old old libc) and also any old kernel interfaces which
> expose it - does ipc ?
procfs oopses with >65535 processes, btw. Related to the i_ino
encoding:
#define fake_ino(pid,ino) (((pid)<<16)|(ino))
#define PROC_INODE_PROPER(inode) ((inode)->i_ino & ~0xffff)
it ruined Anton's evening ;)
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This archive was generated by hypermail 2b29 : Thu Aug 15 2002 - 22:00:19 EST