Re: [PATCH] Use ERESTARTNOHAND if poll() is interrupted by a signal

[Chris Wright]

* Andrew Morton (akpm@xxxxxxxxxxxxxxxxxxxx) wrote:
> On Sun, 29 Jul 2007 19:05:05 +0200 Manfred Spraul <manfred@xxxxxxxxxxxxxxxx> wrote:
> > poll() returns -EINTR if a signal is pending.
> > EINTR is a bad choice: it means that poll returns to user space if the
> > task is stopped by SIGSTOP/SIGCONT or by the freezer.
> > select() and ppoll() both use ERESTARTNOHAND, this avoids a return to
> > user space for signals that are handled by the kernel.
> > 
> > The patch switches poll() to ERESTARTNOHAND.
> > Tested with FC6. Patch against 2.6.23-rc1-mm1.
> 
> hm.  Is this a fix against
> ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.23-rc1/2.6.23-rc1-mm1/broken-out/do_poll-return-eintr-when-signalled.patch
> only, or does mainline also need fixing?

Mainline has same issue (although fix is certainly a bit different w/out
Oleg's patch).
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