From: Marc Eshel <eshel@almaden.ibm.com>
Date: Wed, 6 Dec 2006 04:48:10 +0000 (-0500)
Subject: lockd: always preallocate block in nlmsvc_lock()
X-Git-Tag: v2.6.22-rc1~818^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f812048020282fdfa9b72a6cf539c33b6df1fd07;p=pandora-kernel.git

lockd: always preallocate block in nlmsvc_lock()

Normally we could skip ever having to allocate a block in the case where
the client asks for a non-blocking lock, or asks for a blocking lock that
succeeds immediately.

However we're going to want to always look up a block first in order to
check whether we're revisiting a deferred lock call, and to be prepared to
handle the case where the filesystem returns -EINPROGRESS--in that case we
want to make sure the lock we've given the filesystem is the one embedded
in the block that we'll use to track the deferred request.

Signed-off-by: Marc Eshel <eshel@almaden.ibm.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
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