Re: [PATCH 0/0] SIGWINCH problem with terminal apps

[Adam TlaÅka]

Mon, 6 Oct 2008 23:14:34 +0100 - Alan Cox <alan@xxxxxxxxxxxxxxxxxxx>:

> > > show up more. Later 2.6.27-rc has patches that use the termios
> > > lock across TIOCG/SWINSZ and deal with the problem properly.
> > 
> > Maybe but what with older versions. Anyway the problem is if mutexes
> > are usable here or not.
> 
> Well if mutexes don't work your kernel will eat your computer fairly
> rapidly so I think we may safely conclude that mutex locks work
> 

OK, so if this race problem raises only while kill_pgrp() is
used the proposed patch eliminates this problem. Of course we should
change code in all places where pgrp_kill() is used in conjuction
with mutexes and some internal variables are modified.
What do you think about it?

Regards

-- 
Adam TlaÅka       mailto:atlka@xxxxxxxxx    ^v^ ^v^ ^v^
System  & Network Administration Group       - - - ~~~~~~
Computer Center, GdaÅsk University of Technology, Poland
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