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    SubjectRe: [Bug 9483] circular locking dependency detected

    * Andrew Morton <akpm@linux-foundation.org> wrote:

    > On Tue, 4 Dec 2007 22:25:18 +0100
    > Ingo Molnar <mingo@elte.hu> wrote:
    >
    > >
    > > * Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> wrote:
    > >
    > > > =======================================================
    > > > [ INFO: possible circular locking dependency detected ]
    > > > 2.6.24-rc3 #6
    > > > -------------------------------------------------------
    > > > bash/2294 is trying to acquire lock:
    > > > (&journal->j_list_lock){--..}, at: [<c01eee2f>] journal_try_to_free_buffers+0x76/0x10c
    > > >
    > > > but task is already holding lock:
    > > > (inode_lock){--..}, at: [<c01864b6>] drop_pagecache+0x48/0xd8
    > > >
    > > > which lock already depends on the new lock.
    > >
    > > Andrew, drop_pagecache() is root-only and it has some known deadlock,
    > > right?
    > >
    >
    > yup. It takes inode_lock at too high a level so it can walk the
    > per-sb inode lists.

    Is there anyone genious enough to fix this? :-/

    Ingo


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