From: Sage Weil <sage@newdream.net>
Date: Thu, 12 Nov 2009 23:07:24 +0000 (-0800)
Subject: ceph: fix page invalidation deadlock
X-Git-Tag: v2.6.34-rc2~9^2~127
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=11ea8eda064aa4dc6e44a6dade1891b69ebd5255;p=pandora-kernel.git

ceph: fix page invalidation deadlock

We occasionally want to make a best-effort attempt to invalidate cache
pages without fear of blocking.  If this fails, we fall back to an async
invalidate in another thread.

Use invalidate_mapping_pages instead of invalidate_inode_page2, as that
will skip locked pages, and not deadlock.

Signed-off-by: Sage Weil <sage@newdream.net>
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