From: Al Viro <viro@ZenIV.linux.org.uk>
To: Christoph Hellwig <hch@lst.de>
Cc: Boaz Harrosh <bharrosh@panasas.com>, linux-fsdevel@vger.kernel.org
Subject: Re: [PATCH 2/2] ->write_super lock_super pushdown
Date: Tue, 12 May 2009 14:40:45 +0100 [thread overview]
Message-ID: <20090512134045.GN8633@ZenIV.linux.org.uk> (raw)
In-Reply-To: <20090512132504.GA19872@lst.de>
On Tue, May 12, 2009 at 03:25:04PM +0200, Christoph Hellwig wrote:
> lock kernel is the big kernel lock as in the very first lock that was
> added when Linux grew SMP support. If you filesystem does internal
> locking you most likely don't need this one at all. The only superblock
> method still called with the BKL in the vfs tree is remount, but it
> will most likely be gone before 2.6.31, too. After that you can do
> a quick audit if there was anything it protected against and remove it.
Don't forget that ->get_sb() on mount(2) is also under BKL. Not a
superblock method, for obvious reasons.
next prev parent reply other threads:[~2009-05-12 13:40 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-05-11 21:35 [PATCH 2/2] ->write_super lock_super pushdown Christoph Hellwig
2009-05-12 4:12 ` Al Viro
2009-05-12 10:10 ` Boaz Harrosh
2009-05-12 13:25 ` Christoph Hellwig
2009-05-12 13:40 ` Al Viro [this message]
-- strict thread matches above, loose matches on Subject: below --
2009-05-06 20:16 Christoph Hellwig
2009-05-06 20:36 ` Christoph Hellwig
2009-05-06 22:38 ` Al Viro
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