From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Martin K. Petersen" Subject: Re: Wrong DIF guard tag on ext2 write Date: Tue, 01 Jun 2010 09:17:36 -0400 Message-ID: References: <20100531112817.GA16260@schmichrtp.mainz.de.ibm.com> <20100531144904.GL9453@laptop> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: "Martin K. Petersen" , Christof Schmitt , linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org To: Nick Piggin Return-path: In-Reply-To: <20100531144904.GL9453@laptop> (Nick Piggin's message of "Tue, 1 Jun 2010 00:49:04 +1000") Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-fsdevel.vger.kernel.org >>>>> "Nick" == Nick Piggin writes: >> Yep, known bug. Page writeback locking is messed up for buffer_head >> users. The extNfs folks volunteered to look into this a while back >> but I don't think they have found the time yet. Nick> What do you mean by messed up? Allowing modifications to the page Nick> while it is under writeback? This is deliberate of course and not Nick> limited to buffer_head users either. Messed up in the sense that (at least last I looked) very few buffer_head users were aware of the existence of the page writeback bit. -- Martin K. Petersen Oracle Linux Engineering