linux-kernel - Re: [linux-cifs-client] Re: [PATCH] cifs: fix fh_mutex locking in cifs_reopen

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Message-ID: <524f69650906281202p6296c83esd9848931dfa4e8e8@mail.gmail.com>
Date:	Sun, 28 Jun 2009 14:02:46 -0500
From:	Steve French <smfrench@...il.com>
To:	Jeff Layton <jlayton@...hat.com>
Cc:	linux-cifs-client@...ts.samba.org, linux-kernel@...r.kernel.org,
	Jeremy Allison <jra@...ba.org>, samba-technical@...ts.samba.org
Subject: Re: [linux-cifs-client] Re: [PATCH] cifs: fix fh_mutex locking in 
	cifs_reopen_file

On Sun, Jun 28, 2009 at 11:43 AM, Steve French<smfrench@...il.com> wrote:
> On Sat, Jun 27, 2009 at 8:23 PM, Jeff Layton<jlayton@...hat.com> wrote:
> In any case, as long as we are sure we are hitting a Samba server
> limit (or server side
> per-process limit), we are ok and can continue to review/merge the very large
> inode patches.  I am verifying with one additional pair of temporary
> stats (counters of successful opens) in the exit path of cifs_open and
> cifs_close)
> to make sure that those match what I have already verified that we are seeing
> with smbstatus and the client side counters on number of successful posix_opens.

I am puzzled about the Samba 3.4 max files limit (I am seeing it at
1014 opens) and seems
strange that dbench would open so many files, but with counters in
cifs_open and cifs_close - I see 1014 more opens than closes (from the vfs)
which matches what I see at the SMB level and what I see in Samba server.
dbench 4 fails even faster.   This also fails on other OS (opensuse,
Ubuntu etc.),
but worked on Samba 3.0.28.  Is it possible that Samba 3.4 changed their
max open file limit?


-- 
Thanks,

Steve
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