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| author | Jarek Poplawski <jarkao2@o2.pl> | 2007-07-05 17:42:44 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2007-07-05 17:42:44 -0700 |
| commit | 25442cafb8cc3d979418caccabc91260707a0947 (patch) | |
| tree | 3f934e686d37619a211946f5d78dd28fad82e61b /net | |
| parent | 94b83419e5b56a87410fd9c9939f0081fc155d65 (diff) | |
| download | linux-25442cafb8cc3d979418caccabc91260707a0947.tar.gz linux-25442cafb8cc3d979418caccabc91260707a0947.tar.bz2 linux-25442cafb8cc3d979418caccabc91260707a0947.zip | |
[NETPOLL]: Fixups for 'fix soft lockup when removing module'
>From my recent patch:
> > #1
> > Until kernel ver. 2.6.21 (including) cancel_rearming_delayed_work()
> > required a work function should always (unconditionally) rearm with
> > delay > 0 - otherwise it would endlessly loop. This patch replaces
> > this function with cancel_delayed_work(). Later kernel versions don't
> > require this, so here it's only for uniformity.
But Oleg Nesterov <oleg@tv-sign.ru> found:
> But 2.6.22 doesn't need this change, why it was merged?
>
> In fact, I suspect this change adds a race,
...
His description was right (thanks), so this patch reverts #1.
Signed-off-by: Jarek Poplawski <jarkao2@o2.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/core/netpoll.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/net/core/netpoll.c b/net/core/netpoll.c index cf40ff91ac01..a0efdd7a6b37 100644 --- a/net/core/netpoll.c +++ b/net/core/netpoll.c @@ -72,8 +72,7 @@ static void queue_process(struct work_struct *work) netif_tx_unlock(dev); local_irq_restore(flags); - if (atomic_read(&npinfo->refcnt)) - schedule_delayed_work(&npinfo->tx_work, HZ/10); + schedule_delayed_work(&npinfo->tx_work, HZ/10); return; } netif_tx_unlock(dev); @@ -786,8 +785,7 @@ void netpoll_cleanup(struct netpoll *np) if (atomic_dec_and_test(&npinfo->refcnt)) { skb_queue_purge(&npinfo->arp_tx); skb_queue_purge(&npinfo->txq); - cancel_delayed_work(&npinfo->tx_work); - flush_scheduled_work(); + cancel_rearming_delayed_work(&npinfo->tx_work); /* clean after last, unfinished work */ if (!skb_queue_empty(&npinfo->txq)) { |