diff options
| author |   Wei Yang <weiyang@linux.vnet.ibm.com> | 2015-09-08 14:59:48 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2015-09-08 15:35:28 -0700 |
| commit | 904a9553d4fcdc0c7d5621f6178f0e07598701dc (patch) | |
| tree | 2dd0acd4856e1365c3abb47ff7da700200e29279 /mm/memtest.c | |
| parent | mm, dax: use i_mmap_unlock_write() in do_cow_fault() (diff) | |
| download | wireguard-linux-904a9553d4fcdc0c7d5621f6178f0e07598701dc.tar.xz wireguard-linux-904a9553d4fcdc0c7d5621f6178f0e07598701dc.zip | |
mm/page_alloc.c: refine the calculation of highest possible node id
nr_node_ids records the highest possible node id, which is calculated by
scanning the bitmap node_states[N_POSSIBLE]. Current implementation
scan the bitmap from the beginning, which will scan the whole bitmap.
This patch reverses the order by scanning from the end with
find_last_bit().
Signed-off-by: Wei Yang <weiyang@linux.vnet.ibm.com>
Cc: Tejun Heo <tj@kernel.org>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/memtest.c')
0 files changed, 0 insertions, 0 deletions