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authorLai Jiangshan <laijs@cn.fujitsu.com>2010-12-22 14:18:50 +0800
committerSteven Rostedt <rostedt@goodmis.org>2011-03-11 15:09:52 -0500
commit2e12978a9f7a7abd54e8eb9ce70a7718767b8b2c (patch)
treeeb4f298e084b5bcc4922511237cd6ce2e158abdd /MAINTAINERS
parenta5abba989deceb731047425812d268daf7536575 (diff)
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futex,plist: Pass the real head of the priority list to plist_del()
Some plist_del()s in kernel/futex.c are passed a faked head of the priority list. It does not fail because the current code does not require the real head in plist_del(). The current code of plist_del() just uses the head for checking, so it will not cause a bad result even when we use a faked head. But it is undocumented usage: /** * plist_del - Remove a @node from plist. * * @node: &struct plist_node pointer - entry to be removed * @head: &struct plist_head pointer - list head */ The document says that the @head is the "list head" head of the priority list. In futex code, several places use "plist_del(&q->list, &q->list.plist);", they pass a fake head. We need to fix them all. Thanks to Darren Hart for many suggestions. Acked-by: Darren Hart <dvhart@linux.intel.com> Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com> LKML-Reference: <4D11984A.5030203@cn.fujitsu.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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