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Date: Tue, 22 Jul 2008 17:49:48 -0700 From: Mingming Cao <cmm@...ibm.com> To: "Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com> Cc: Shehjar Tikoo <shehjart@....unsw.edu.au>, linux-ext4@...r.kernel.org Subject: Re: Crash and stack trace for jbd2 under ext4 在 2008-07-21一的 13:50 +0530,Aneesh Kumar K.V写道: > On Mon, Jul 21, 2008 at 02:28:39PM +1000, Shehjar Tikoo wrote: > > Hi all > > > > Please see the contents of the file > > for details of two similar crashes observed > > on two different commits. Both crashes were > > observed while using ext4 on the server while > > accessing the export through NFSv3. The link > > has more details. > > > > http://www.gelato.unsw.edu.au/~shehjart/docs/jbd_ext4_crash.txt > > > > I guess we cannot use > #define EXT4_MAX_WRITEBACK_CREDITS DIO_CREDITS > > We do multiple block allocation in ext4_da_writepages and we can > get these blocks from different block groups. So we may need to update > bitmap of multiple groups. > > -aneesh Yeah, the journal credit reservation for writepages() need a little attention. I will send a RFC patch shortly. Mingming -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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