From: Sage Weil <sage@newdream.net>
Date: Tue, 26 Jul 2011 18:27:34 +0000 (-0700)
Subject: ceph: avoid carrying Fw cap during write into page cache
X-Git-Tag: v3.1-rc1~220^2~15
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d8de9ab63a57326d21154c13c365f949f53ce8e1;p=pandora-kernel.git

ceph: avoid carrying Fw cap during write into page cache

The generic_file_aio_write call may block on balance_dirty_pages while we
flush data to the OSDs.  If we hold a reference to the FILE_WR cap during
that interval revocation by the MDS (e.g., to do a stat(2)) may be very
slow.

Reviewed-by: Yehuda Sadeh <yehuda@hq.newdream.net>
Signed-off-by: Sage Weil <sage@newdream.net>
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