[lkml]   [2008]   [Apr]   [30]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
    SubjectRe: [Patch]net/xfrm/xfrm_policy.c: replace timer with delayed_work
    On Thu, May 01, 2008 at 12:06:55AM +0800, WANG Cong wrote:
    > Hi, Herbert.
    > I referenced the book Linux Device Drivers, it is said that
    > the work function in workqueue can sleep, that is to say, it only
    > works in process context, so we don't need the disable the lock
    > in softirq, which is interrupt context, right?

    Because it can sleep, you must disable BH for locks that can
    be taken on the softirq path as otherwise a softirq can come
    in, try to take the lock again and dead-lock.

    Visit Openswan at
    Email: Herbert Xu ~{PmV>HI~} <>
    Home Page:
    PGP Key:

     \ /
      Last update: 2008-05-01 03:15    [W:0.019 / U:4.340 seconds]
    ©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site