From: Nick Piggin <npiggin@suse.de>
Date: Fri, 14 Sep 2007 06:41:12 +0000 (+0200)
Subject: shared tag queue barrier comment
X-Git-Tag: v2.6.23-rc7~51
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=dd941252a81b02b5915e2db160fe02c972875846;p=pandora-kernel.git

shared tag queue barrier comment

Should add some comments for the tag barriers (they won't be so important
if we can switch over to the explicit _lock bitops, but for now we should
make it clear).

Jens' original patch said a barrier after the test_and_clear_bit was also
required. I can't see why (and it would prevent the use of the _lock bitop).

Acked-by: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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