From: Mikulas Patocka <mpatocka@redhat.com>
Date: Wed, 28 Nov 2012 03:59:52 +0000 (-0500)
Subject: percpu-rwsem: use synchronize_sched_expedited
X-Git-Tag: v3.7-rc8~25
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4b05a1c74d1cfae37cf6ff293ee928350f031418;p=pandora-kernel.git

percpu-rwsem: use synchronize_sched_expedited

Use synchronize_sched_expedited() instead of synchronize_sched()
to improve mount speed.

This patch improves mount time from 0.500s to 0.013s for Jeff's
test-case.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Reported-and-tested-by: Jeff Chua <jeff.chua.linux@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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