Hello,

Looks like this has fixed the problem for me, it's not falling down
anymore. Thanks Dave.


On Mon, 05 Mar 2007 09:50:11 -0600
Dave Kleikamp <[EMAIL PROTECTED]> wrote:

> On Mon, 2007-03-05 at 09:36 -0600, Dave Kleikamp wrote:
> > On Mon, 2007-03-05 at 09:59 -0500, Chuck Ebbert wrote:
> > > Will Trives wrote:
> > > 
> > > [adding JFS maintainer to cc:]
> > 
> > Thanks for adding me to the thread.
> > 
> > > Some kind of JFS problem?
> > 
> > I don' t know yet.  I was notified of the problem through bugzilla:
> > http://bugzilla.kernel.org/show_bug.cgi?id=8128
> > 
> > The problem appears that a non-uptodate page has been marked
> > dirty.  I haven't found much in the way of changes between 2.6.20
> > and the current git tree to explain this.  There's this one:
> > http://git.kernel.org/gitweb.cgi?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=22c8ca78f20724676b6006232bf06cc3e9299539
> > 
> > I'm looking for for a caller to ->prepare_write() which marks the
> > page dirty without calling ->commit_write().
> 
> I think I just found it:
> 
> nobh_truncate_page():
> 
>       ret = a_ops->prepare_write(NULL, page, offset, to);
>       if (ret == 0) {
>               kaddr = kmap_atomic(page, KM_USER0);
>               memset(kaddr + offset, 0, PAGE_CACHE_SIZE - offset);
>               flush_dcache_page(page);
>               kunmap_atomic(kaddr, KM_USER0);
>               set_page_dirty(page);
>       }
>       unlock_page(page);
>       page_cache_release(page);
> 
> > 
> > Will, could you try reverting that patch?  If that fails, narrowing
> > the problem down with git-bisect would be helpful, if you have the
> > time.
> 
> Better yet, try this patch:
> 
> Signed-off-by: Dave Kleikamp <[EMAIL PROTECTED]>
> 
> diff -Nurp linux-orig/fs/buffer.c linux/fs/buffer.c
> --- linux-orig/fs/buffer.c    2007-02-22 07:59:01.000000000 -0600
> +++ linux/fs/buffer.c 2007-03-05 09:47:07.000000000 -0600
> @@ -2466,6 +2466,7 @@ int nobh_truncate_page(struct address_sp
>               memset(kaddr + offset, 0, PAGE_CACHE_SIZE - offset);
>               flush_dcache_page(page);
>               kunmap_atomic(kaddr, KM_USER0);
> +             SetPageUptodate(page);
>               set_page_dirty(page);
>       }
>       unlock_page(page);
> 
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Reply via email to