From: Davide Libenzi <davidel@xmailserver.org>
Date: Tue, 29 Apr 2008 07:58:34 +0000 (-0700)
Subject: epoll: avoid kmemcheck warning
X-Git-Tag: v2.6.26-rc1~678
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cdac75e6f2fec9abc21d0abb4e5d80720eeebb10;p=pandora-kernel.git

epoll: avoid kmemcheck warning

Epoll calls rb_set_parent(n, n) to initialize the rb-tree node, but
rb_set_parent() accesses node's pointer in its code.  This creates a
warning in kmemcheck (reported by Vegard Nossum) about an uninitialized
memory access.  The warning is harmless since the following rb-tree node
insert is going to overwrite the node data.  In any case I think it's
better to not have that happening at all, and fix it by simplifying the
code to get rid of a few lines that became superfluous after the previous
epoll changes.

Signed-off-by: Davide Libenzi <davidel@xmailserver.org>
Cc: Vegard Nossum <vegard.nossum@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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