Re: [PATCH] 2.4: Restore current->files in flush_old_exec

[Herbert Xu]

On Sat, Aug 09, 2003 at 04:20:38AM +0200, Andreas Gruenbacher wrote:
> On Sat, 9 Aug 2003, Herbert Xu wrote:
> 
> > On Sat, Aug 09, 2003 at 11:11:16AM +1000, herbert wrote:
> > >
> > > At this point, I believe the unshare_files stuff should be fine from
> > > a correctness point of view.  However, there is still a performance
> > > problem as every ELF exec call ends up dupliating the files structure
> > > as well as walking through all file locks.
> >
> > Here is the patch that ensures files is only duplicated when necessary.
> 
> This patch is correct but unnecessary: steal_locks already tests for this
> condition.

Yes but when you call unshare_files twice one of them will have to
copy.
-- 
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Email:  Herbert Xu ~{PmV>HI~} <herbert@xxxxxxxxxxxxxxxxxxx>
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