Hello, Pekka. 2012/12/7 Pekka Enberg <penberg at kernel.org>: > On Thu, Dec 6, 2012 at 6:09 PM, Joonsoo Kim <js1304 at gmail.com> wrote: >> The purpose of iterating a vmlist is finding vm area with specific >> virtual address. find_vm_area() is provided for this purpose >> and more efficient, because it uses a rbtree. >> So change it. > > You no longer take the 'vmlist_lock'. This is safe, because...? As Bob mentioned, find_vm_area() hold a 'vmap_area_lock' during searching a area. When we hold a 'vmap_area_lock', area can't be removed. So this change is safe. Thanks.
