tree 6229d16c737782a36795354b218c74d4d2749752
parent 557ed1fa2620dc119adb86b34c614e152a629a80
author Nick Piggin <npiggin@suse.de> 1192523080 -0700
committer Linus Torvalds <torvalds@woody.linux-foundation.org> 1192552973 -0700

mm: use lockless radix-tree probe

Probing pages and radix_tree_tagged are lockless operations with the lockless
radix-tree.  Convert these users to RCU locking rather than using tree_lock.

Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>