lkml.org 
[lkml]   [2006]   [Nov]   [23]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: [PATCH -mm 3/4][AIO] - AIO completion signal notification
    On Thu, 23 Nov 2006 09:28:05 +0100
    Sébastien Dugué <sebastien.dugue@bull.net> wrote:

    > > > + if (notify->notify == (SIGEV_SIGNAL|SIGEV_THREAD_ID)) {
    > > > + /*
    > > > + * This reference will be dropped in really_put_req() when
    > > > + * we're done with the request.
    > > > + */
    > > > + get_task_struct(target);
    > > > + }
    > >
    > > It worries me that this function can save away a task_struct* without
    > > having taken a reference against it.
    > >
    >
    > OK. Does moving 'notify->target = target;' after the get_task_struct() will
    > do, or am I missing something more subtle?

    Well it's your code - you tell me ;)

    It is unsafe (and rather pointless) to be saving the address of some structure
    which can be freed at any time.
    -
    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: 2006-11-23 09:45    [W:2.296 / U:0.300 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site