Just discussed this with Colin, somehow (given the hint about fsc), this
change in v3.0 sounds suspiciously like it could be fixing the issue:
commit c902ce1bfb40d8b049bd2319b388b4b68b04bc27
Author: David Howells <dhowe...@redhat.com>
Date: Thu Jul 7 12:19:48 2011 +0100
FS-Cache: Add a helper to bulk uncache pages on an inode
Add an FS-Cache helper to bulk uncache pages on an inode. This will
only work for the circumstance where the pages in the cache correspond
1:1 with the pages attached to an inode's page cache.
This is required for CIFS and NFS: When disabling inode cookie, we were
returning the cookie and setting cifsi->fscache to NULL but failed to
invalidate any previously mapped pages. This resulted in "Bad page
state" errors and manifested in other kind of errors when running
fsstress. Fix it by uncaching mapped pages when we disable the inode
cookie.
This patch should fix the following oops and "Bad page state" errors
seen during fsstress testing.
Justin, if we provided a test kernel, would you be able to give that a
try?
** Changed in: linux (Ubuntu)
Assignee: Colin King (colin-king) => Stefan Bader (stefan-bader-canonical)
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https://bugs.launchpad.net/bugs/1007082
Title:
BUG: Bad page state in process node pfn:8e9d9
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