lkml.org 
[lkml]   [2002]   [Feb]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: [RFC] New locking primitive for 2.5
    yodaiken@fsmlabs.com wrote:
    >
    > llseek:
    > atomic_enquee request
    > if no room gotta sleep
    > else if trylock mutex
    > return
    > else
    > do work
    > loop:
    > process any pending requests
    > release lock;
    > if pending_requests && !(trylock mutex) goto loop

    This is how printk() works. It was a very powerful and satisfactory
    solution to a nasty locking/atomicity problem. It'd be nice to have
    a more generic way of expressing that solution.

    -
    -
    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to majordomo@vger.kernel.org
    More majordomo info at http://vger.kernel.org/majordomo-info.html
    Please read the FAQ at http://www.tux.org/lkml/

    \
     
     \ /
      Last update: 2005-03-22 13:24    [W:0.024 / U:0.544 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site