From: Frank Blaschka under memory pressure scatter gather mode switching messages must be rate limited. Signed-off-by: Frank Blaschka Signed-off-by: Ursula Braun --- drivers/s390/net/qeth_main.c | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-) Index: linux-2.6-uschi/drivers/s390/net/qeth_main.c =================================================================== --- linux-2.6-uschi.orig/drivers/s390/net/qeth_main.c +++ linux-2.6-uschi/drivers/s390/net/qeth_main.c @@ -2803,13 +2803,16 @@ qeth_queue_input_buffer(struct qeth_card if (newcount < count) { /* we are in memory shortage so we switch back to traditional skb allocation and drop packages */ - if (atomic_cmpxchg(&card->force_alloc_skb, 0, 1)) - printk(KERN_WARNING - "qeth: switch to alloc skb\n"); + if (!atomic_read(&card->force_alloc_skb) && + net_ratelimit()) + PRINT_WARN("Switch to alloc skb\n"); + atomic_set(&card->force_alloc_skb, 3); count = newcount; } else { - if (atomic_cmpxchg(&card->force_alloc_skb, 1, 0)) - printk(KERN_WARNING "qeth: switch to sg\n"); + if ((atomic_read(&card->force_alloc_skb) == 1) && + net_ratelimit()) + PRINT_WARN("Switch to sg\n"); + atomic_add_unless(&card->force_alloc_skb, -1, 0); } /* -- - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html