On Monday 08 June 2009, Chris Clayton wrote:
> Linus,
>
> 2009/6/8 Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>:
> > On Mon, 8 Jun 2009, Chris Clayton wrote:
> >> I can confirm that a kernel built with Jaswinder's patch applied
> >> survived 200 boots without a panic.
> >
> > Ok, goodie.
> >
> > Can you confirm that the further cleanup (removing the pointless 'ret'
> > variable and the useless empty checking around 'for_each_entry') also
> > works for you?
> >
> > Linus
> >
> > ---
> > kernel/async.c | 15 +++++----------
> > 1 files changed, 5 insertions(+), 10 deletions(-)
> >
> > diff --git a/kernel/async.c b/kernel/async.c
> > index 5054030..27235f5 100644
> > --- a/kernel/async.c
> > +++ b/kernel/async.c
> > @@ -92,23 +92,18 @@ extern int initcall_debug;
> > static async_cookie_t __lowest_in_progress(struct list_head *running)
> > {
> > struct async_entry *entry;
> > - async_cookie_t ret = next_cookie; /* begin with "infinity" value
> > */
> >
> > if (!list_empty(running)) {
> > entry = list_first_entry(running,
> > struct async_entry, list);
> > - ret = entry->cookie;
> > + return entry->cookie;
> > }
> >
> > - if (!list_empty(&async_pending)) {
> > - list_for_each_entry(entry, &async_pending, list)
> > - if (entry->running == running) {
> > - ret = entry->cookie;
> > - break;
> > - }
> > - }
> > + list_for_each_entry(entry, &async_pending, list)
> > + if (entry->running == running)
> > + return entry->cookie;
> >
> > - return ret;
> > + return next_cookie; /* "infinity" value */
> > }
> >
> > static async_cookie_t lowest_in_progress(struct list_head *running)
>
> Yes, rc8-git5 with your patch applied has booted 100 times without a panic.
>
...so I should have added:
Tested-by: Chris Clayton <chris2553@xxxxxxxxxxxxxx>
> May I add that the people who thought of, designed and implemented
> kexec should have a large and shiny medals pinned to their chests.
> Well over 1000 kernel boots have been executed on my PC today and, if
> I hadn't been able to do that automatically with a few lines of script
> at the head of /etc/rc.d/rc.local, I would have been bleary-eyed
> before noon :-)
>
> Chris
--
No, Sir; there is nothing which has yet been contrived by man, by which
so much happiness is produced as by a good tavern or inn - Doctor Samuel
Johnson
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