From: Zach Brown <zach.brown@oracle.com>
Date: Mon, 14 Nov 2005 00:07:35 +0000 (-0800)
Subject: [PATCH] aio: don't ref kioctx after decref in put_ioctx
X-Git-Tag: v2.6.15-rc2~153
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5ef1c49f8f9f0d6b5b8d57bb4b66c605a3d65876;p=pandora-kernel.git

[PATCH] aio: don't ref kioctx after decref in put_ioctx

put_ioctx's refcount debugging was doing an atomic_read after dropping its
reference when it wasn't the last ref, leaving a tiny race for another freeing
thread to sneak into.  This shifts the debugging before the ops, uses BUG_ON,
and reformats the defines a little.  Sadly, moving to inlines increased the
code size but this change decreases the code size by a whole 9 bytes :)

Signed-off-by: Zach Brown <zach.brown@oracle.com>
Cc: Benjamin LaHaise <bcrl@kvack.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

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