linux-kernel - Re: [PATCH] cifs: retry lookup and readdir when EAGAIN is returned.

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Date:   Wed, 16 Jun 2021 12:07:50 +0200
From:   Aurélien Aptel <aaptel@...e.com>
To:     ronnie sahlberg <ronniesahlberg@...il.com>,
        Thiago Rafael Becker <trbecker@...il.com>
Cc:     linux-cifs <linux-cifs@...r.kernel.org>,
        Steve French <sfrench@...ba.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] cifs: retry lookup and readdir when EAGAIN is returned.


Thanks for the patch and reproducer Thiago.

ronnie sahlberg <ronniesahlberg@...il.com> writes:
> Looks good to me.

I guess it looks ok as a quick fix for the issue at hand but:
- should we check for more error codes (use is_retryable_error()?)
- all syscalls will need something similar, the session can be closed at
  any point
  * either we add a loop everywhere
  * or we change cifs_send_receive to retry (most?) calls
  * might be worth looking at what nfs does here
- Should this be done for both soft (default) and hard mounts? I guess
  for hard we would retry indefinitely

Cheers,
-- 
Aurélien Aptel / SUSE Labs Samba Team
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