From: Sage Weil <sage@newdream.net>
Date: Thu, 3 Mar 2011 00:55:21 +0000 (-0800)
Subject: libceph: fix handling of short returns from get_user_pages
X-Git-Tag: v2.6.38-rc8~9^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=38815b780285a4957852c5c9dbe94991c0b26c56;p=pandora-kernel.git

libceph: fix handling of short returns from get_user_pages

get_user_pages() can return fewer pages than we ask for.  We were returning
a bogus pointer/error code in that case.  Instead, loop until we get all
the pages we want or get an error we can return to the caller.

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