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Re: [PATCH V2] Always reset btree cursor after an insert

To: Lachlan McIlroy <lachlan@xxxxxxx>, Christoph Hellwig <hch@xxxxxxxxxxxxx>, xfs-dev <xfs-dev@xxxxxxx>, xfs-oss <xfs@xxxxxxxxxxx>
Subject: Re: [PATCH V2] Always reset btree cursor after an insert
From: Lachlan McIlroy <lachlan@xxxxxxx>
Date: Fri, 20 Jun 2008 17:35:48 +1000
In-reply-to: <20080620033710.GZ3700@disturbed>
References: <4859F9EB.5050505@xxxxxxx> <20080619083544.GA19606@xxxxxxxxxxxxx> <485B0B04.80808@xxxxxxx> <20080620033710.GZ3700@disturbed>
Reply-to: lachlan@xxxxxxx
Sender: xfs-bounce@xxxxxxxxxxx
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Dave Chinner wrote:
On Fri, Jun 20, 2008 at 11:42:28AM +1000, Lachlan McIlroy wrote:
Christoph Hellwig wrote:
On Thu, Jun 19, 2008 at 04:17:15PM +1000, Lachlan McIlroy wrote:
After a btree insert operation a cursor can be invalid due to block
splits and a maybe a new root block.  We reset the cursor in
xfs_bmbt_insert() in the cases where we think we need to but it
isn't enough as we still see assertions.  Just do what we do elsewhere
and reset the cursor unconditionally.  Version 2 adds
XFS_WANT_CORRUPTED_GOTO checks throughout xfs_bmap.c and removes the
fix to revalidate the original cursor in xfs_bmbt_insert().
Can you commit the XFS_WANT_CORRUPTED_GOTO checks as a separate patch
before the cursor reset?  ACK from me for those hunks.

Yeah, no problem, thanks.

The rest of it looks ok as well, Lachlan.


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