From: Andi Kleen <andi@firstfloor.org>
To: Jan Blunck <jblunck@suse.de>
Cc: linux-fsdevel@vger.kernel.org
Subject: Re: [RFC 2/3] BKL: remove from ext2
Date: Wed, 07 Oct 2009 07:44:56 +0200 [thread overview]
Message-ID: <87y6nnzrjb.fsf@basil.nowhere.org> (raw)
In-Reply-To: <1254324604-20243-3-git-send-email-jblunck@suse.de> (Jan Blunck's message of "Wed, 30 Sep 2009 17:30:03 +0200")
Jan Blunck <jblunck@suse.de> writes:
> Remove the big kernel lock from ext2 and replace it with a per superblock
> mutex.
The problem is that this can easily deadlock if the code sleeps
and relies on someone else making process on the same sb
(BKL avoids this problem by getting transparently dropped on schedule)
So it would need more auditing or like it was suggested porting
from extX, X>2.
-Andi
--
ak@linux.intel.com -- Speaking for myself only.
next prev parent reply other threads:[~2009-10-07 5:45 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-09-30 15:30 [RFC 0/3] Remove BKL from fs/ Jan Blunck
2009-09-30 15:30 ` [RFC 1/3] BKL pushdown from do_new_mount() to the filesystems Jan Blunck
2009-09-30 15:46 ` Matthew Wilcox
2009-10-01 18:05 ` Jan Blunck
2009-10-08 15:49 ` Boaz Harrosh
2009-10-31 12:26 ` Jan Blunck
2009-09-30 15:30 ` [RFC 2/3] BKL: remove from ext2 Jan Blunck
2009-10-01 18:01 ` Christoph Hellwig
2009-10-31 12:24 ` Jan Blunck
2009-10-07 5:44 ` Andi Kleen [this message]
2009-09-30 15:30 ` [RFC 3/3] BKL: Remove default_llseek() Jan Blunck
2009-10-01 18:06 ` Christoph Hellwig
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