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charset=us-ascii Content-Disposition: inline In-Reply-To: <8d6a1cd3-75cf-78c3-b83b-c5208a209f65@nvidia.com> User-Agent: NeoMutt/20170113 (1.7.2) X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Sat, Mar 28, 2020 at 09:00:26PM -0700, John Hubbard wrote: >On 3/28/20 7:42 PM, Wei Yang wrote: >> For all 0 nodemask_t, we have already define macro NODE_MASK_NONE. >> Leverage this to define an all clear nodemask. > >It would be a little clearer if you used wording more like this: > >Subject: [Patch v3] mm/page_alloc.c: use NODE_MASK_NONE in build_zonelists() > >Slightly simplify the code by initializing user_mask with >NODE_MASK_NONE, instead of later calling nodes_clear(). This saves >a line of code. > Thanks, the wording is better. > >> >> Signed-off-by: Wei Yang >> >> --- >> v3: adjust the commit log a little >> v2: use NODE_MASK_NONE as suggested by David Hildenbrand >> --- >> mm/page_alloc.c | 3 +-- >> 1 file changed, 1 insertion(+), 2 deletions(-) >> >> diff --git a/mm/page_alloc.c b/mm/page_alloc.c >> index ef790dfad6aa..dfcf2682ed40 100644 >> --- a/mm/page_alloc.c >> +++ b/mm/page_alloc.c >> @@ -5587,14 +5587,13 @@ static void build_zonelists(pg_data_t *pgdat) >> { >> static int node_order[MAX_NUMNODES]; >> int node, load, nr_nodes = 0; >> - nodemask_t used_mask; >> + nodemask_t used_mask = NODE_MASK_NONE; >> int local_node, prev_node; >> /* NUMA-aware ordering of nodes */ >> local_node = pgdat->node_id; >> load = nr_online_nodes; >> prev_node = local_node; >> - nodes_clear(used_mask); >> memset(node_order, 0, sizeof(node_order)); >> while ((node = find_next_best_node(local_node, &used_mask)) >= 0) { >> > >Honestly, I don't think it's really worth doing a patch for this, but >there's nothing wrong with the diff, so: > >Reviewed-by: John Hubbard > Thanks. > >thanks, >-- >John Hubbard >NVIDIA -- Wei Yang Help you, Help me