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    Subject[Suspend2][ 02/13] [Suspend2] Fill skb pool.
    Date
    Fill the skb pool used to communicate with userspace helpers.

    Signed-off-by: Nigel Cunningham <nigel@suspend2.net>

    kernel/power/netlink.c | 19 +++++++++++++++++++
    1 files changed, 19 insertions(+), 0 deletions(-)

    diff --git a/kernel/power/netlink.c b/kernel/power/netlink.c
    index 8d27801..d169096 100644
    --- a/kernel/power/netlink.c
    +++ b/kernel/power/netlink.c
    @@ -15,3 +15,22 @@
    #ifdef CONFIG_NET
    struct user_helper_data *uhd_list = NULL;

    +/*
    + * Refill our pool of SKBs for use in emergencies (eg, when eating memory and none
    + * can be allocated).
    + */
    +static void suspend_fill_skb_pool(struct user_helper_data *uhd)
    +{
    + while (uhd->pool_level < uhd->pool_limit) {
    + struct sk_buff *new_skb =
    + alloc_skb(NLMSG_SPACE(uhd->skb_size), GFP_ATOMIC);
    +
    + if (!new_skb)
    + break;
    +
    + new_skb->next = uhd->emerg_skbs;
    + uhd->emerg_skbs = new_skb;
    + uhd->pool_level++;
    + }
    +}
    +
    --
    Nigel Cunningham nigel at suspend2 dot net
    -
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