From: Christoph Hellwig <hch@infradead.org>
To: "Darrick J. Wong" <darrick.wong@oracle.com>
Cc: linux-xfs@vger.kernel.org
Subject: Re: [PATCH 2/7] xfs: fail _dir_open when readahead fails
Date: Tue, 31 Jan 2017 05:29:57 -0800 [thread overview]
Message-ID: <20170131132957.GB17386@infradead.org> (raw)
In-Reply-To: <148582219640.12293.12536546233357325085.stgit@birch.djwong.org>
There is an xfs missing in the subject, I think..
On Mon, Jan 30, 2017 at 04:23:16PM -0800, Darrick J. Wong wrote:
> From: Darrick J. Wong <darrick.wong@oracle.com>
>
> When we open a directory, we try to readahead block 0 of the directory
> on the assumption that we're going to need it soon. If the bmbt is
> corrupt, the directory will never be usable and the readahead fails
> immediately, so we might as well prevent the directory from being opened
> at all. This prevents a subsequent read or modify operation from
> hitting it and taking the fs offline.
I think this looks fine, but the patch description is a bit odd -
we don't actually check for failures for the actual read-ahead, just
for the block mapping, which I guess is what you need anyway.
So with a slight update to the patch descriptions:
Reviewed-by: Christoph Hellwig <hch@lst.de>
next prev parent reply other threads:[~2017-01-31 13:49 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-31 0:23 [PATCH 0/7] xfs: random fixes Darrick J. Wong
2017-01-31 0:23 ` [PATCH 1/7] xfs: fix toctou race when locking an inode to access the data map Darrick J. Wong
2017-01-31 3:01 ` Eric Sandeen
2017-01-31 13:26 ` Christoph Hellwig
2017-01-31 19:45 ` Darrick J. Wong
2017-01-31 21:40 ` Darrick J. Wong
2017-02-01 2:34 ` [PATCH v2 " Darrick J. Wong
2017-02-01 14:48 ` Christoph Hellwig
2017-01-31 0:23 ` [PATCH 2/7] xfs: fail _dir_open when readahead fails Darrick J. Wong
2017-01-31 4:12 ` Eric Sandeen
2017-01-31 13:29 ` Christoph Hellwig [this message]
2017-01-31 0:23 ` [PATCH 3/7] xfs: filter out obviously bad btree pointers Darrick J. Wong
2017-01-31 4:39 ` Eric Sandeen
2017-01-31 20:09 ` Darrick J. Wong
2017-01-31 20:37 ` Eric Sandeen
2017-01-31 0:23 ` [PATCH 4/7] xfs: check for obviously bad level values in the bmbt root Darrick J. Wong
2017-01-31 13:31 ` Christoph Hellwig
2017-01-31 0:23 ` [PATCH 5/7] xfs: verify free block header fields Darrick J. Wong
2017-01-31 13:42 ` Christoph Hellwig
2017-01-31 0:23 ` [PATCH 6/7] xfs: allow unwritten extents in the CoW fork Darrick J. Wong
2017-02-01 2:35 ` [PATCH v2 " Darrick J. Wong
2017-02-01 18:06 ` Christoph Hellwig
2017-01-31 0:23 ` [PATCH 7/7] xfs: mark speculative prealloc CoW fork extents unwritten Darrick J. Wong
2017-01-31 13:41 ` Christoph Hellwig
2017-01-31 19:11 ` Darrick J. Wong
2017-02-01 1:28 ` Darrick J. Wong
2017-02-01 2:36 ` [PATCH v2 " Darrick J. Wong
2017-02-01 18:36 ` Christoph Hellwig
2017-02-02 15:04 ` Brian Foster
2017-02-02 17:04 ` Darrick J. Wong
2017-02-02 19:42 ` Brian Foster
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