Andi Kleen <[email protected]> wrote:
>
> On Wednesday 11 January 2006 22:27, Arjan van de Ven wrote:
> > > 15/fs/ext3/super.c~ 2006-01-11 21:54:13.000000000 +0100
> > > > +++ linux-2.6.15/fs/ext3/super.c 2006-01-11 21:54:13.000000000 +0100
> > > > @@ -2150,7 +2150,7 @@
> > > >
> > > > static void ext3_write_super (struct super_block * sb)
> > > > {
> > > > - if (mutex_trylock(&sb->s_lock) != 0)
> > > > + if (!mutex_trylock(&sb->s_lock) != 0)
> > > > BUG();
> > > > sb->s_dirt = 0;
> > > > }
> > >
> > > We expect the lock to be held on entry. Hence we expect mutex_trylock()
> > > to return zero.
> >
> > you are correct, and the x86-64 mutex.h is buggy
>
> While this patch seemed to fix LTP my desktop running the same kernel (with
> mutex fix) hung the mailer while sending an unrelated mail. Again on ext3.
>
> I unfortunately don't have the backtraces anymore because I couldn't
> save them to disk before the reboot (and forgot to copy them
> to another system sorry), but they were also hanging in some JBD/ext3
> functions in D, with all disk accesses hanging.
>
> So things appear to be still broken in ext3 land.
Are you using MD?
sata? If so, which?
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