tree c9b17bcf583e047ecb55bf775b55053c85b21935
parent 8930c8aa740b12ad69f44a35137bcc39bfa3dc41
author Alex Dubov <oakad@yahoo.com> 1294880464 -0800
committer Linus Torvalds <torvalds@linux-foundation.org> 1294934602 -0800

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>