Re: [PATCH] ceph: remove the incorrect caps check in _file_size()

[Greg KH <gregkh@linuxfoundation.org>]

On Wed, Sep 06, 2023 at 08:17:47PM +0800, xiubli@redhat.com wrote:
> From: Xiubo Li <xiubli@redhat.com>
> 
> When truncating the inode the MDS will acquire the xlock for the
> ifile Locker, which will revoke the 'Frwsxl' caps from the clients.
> But when the client just releases and flushes the 'Fw' caps to MDS,
> for exmaple, and once the MDS receives the caps flushing msg it
> just thought the revocation has finished. Then the MDS will continue
> truncating the inode and then issued the truncate notification to
> all the clients. While just before the clients receives the cap
> flushing ack they receive the truncation notification, the clients
> will detecte that the 'issued | dirty' is still holding the 'Fw'
> caps.
> 
> Cc: stable@vger.kernel.org
> URL: https://tracker.ceph.com/issues/56693
> Signed-off-by: Xiubo Li <xiubli@redhat.com>
> ---
>  fs/ceph/inode.c | 4 +---
>  1 file changed, 1 insertion(+), 3 deletions(-)

What commit id does this fix?

thanks,

greg k-h