From: Miklos Szeredi <mszeredi@suse.cz>
Date: Wed, 1 Jul 2015 14:26:06 +0000 (+0200)
Subject: fuse: request_end(): do once
X-Git-Tag: omap-for-v4.2/fixes-rc1^2~41^2~8
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=365ae710df91edc97d24817e3271e01bffaaee32;p=pandora-kernel.git

fuse: request_end(): do once

When the connection is aborted it is possible that request_end() will be
called twice.  Use atomic test and set to do the actual ending only once.

test_and_set_bit() also provides the necessary barrier semantics so no
explicit smp_wmb() is necessary.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Reviewed-by: Ashish Samant <ashish.samant@oracle.com>
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