lkml.org 
[lkml]   [2007]   [Oct]   [16]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    SubjectRe: Possible circular locking: ->mmap_sem vs jbd_handle
    From
    Date
    On Tue, 2007-10-16 at 02:01 -0700, Andrew Morton wrote:
    > On Tue, 16 Oct 2007 12:54:29 +0400 Alexey Dobriyan <adobriyan@sw.ru> wrote:
    >
    > > Got this during LTP's diotest1. Reproducable.
    > >
    > > =======================================================
    > > [ INFO: possible circular locking dependency detected ]
    > > 2.6.23-65a6ec0d72a07f16719e9b7a96e1c4bae044b591 #2
    > > -------------------------------------------------------
    > > diotest1/13563 is trying to acquire lock:
    > > (&mm->mmap_sem){----}, at: [<c107a7b7>] dio_get_page+0x4b/0x16b
    > >
    > > but task is already holding lock:
    > > (jbd_handle){--..}, at: [<c1099b05>] journal_start+0xf3/0x120
    > >
    > > which lock already depends on the new lock.
    >
    > Someone taught lockdep about journal_start? That's gonna hurt.

    It was you who suggested doing so,...

    Are these valid reports, or is the annotation wrong?
    [unhandled content-type:application/pgp-signature]
    \
     
     \ /
      Last update: 2007-10-16 11:07    [W:0.019 / U:0.020 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site