From: Alex Dubov <oakad@yahoo.com>
Date: Thu, 13 Jan 2011 01:01:04 +0000 (-0800)
Subject: memstick: avert possible race condition between idr_pre_get and idr_get_new
X-Git-Tag: v2.6.38-rc1~274
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d8256d487840f9c2c372f8fc615a5d378bc133f1;p=pandora-kernel.git

memstick: avert possible race condition between idr_pre_get and idr_get_new

Implement the usual pattern around idr_pre_get() and idr_get_new() to
handlethe situation where another thread concurrently steals this thread's
idr_pre_get() preallocation.

Signed-off-by: Alex Dubov <oakad@yahoo.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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