diff options
| author | Mel Gorman | 2021-06-30 18:53:56 -0700 |
|---|---|---|
| committer | Linus Torvalds | 2021-07-01 11:06:03 -0700 |
| commit | 351de44fde5afc3b0b23294ebf404e78065c2745 (patch) | |
| tree | 0030ed8eef5ed9c7107185b6317d40728383196a | |
| parent | ffd8f251f1a61e592aa3146d2c3cfb6a992e80f2 (diff) | |
mm/swap: make NODE_DATA an inline function on CONFIG_FLATMEM
make W=1 generates the following warning in mm/workingset.c for allnoconfig
mm/workingset.c: In function `unpack_shadow':
mm/workingset.c:201:15: warning: variable `nid' set but not used [-Wunused-but-set-variable]
int memcgid, nid;
^~~
On FLATMEM, NODE_DATA returns a global pglist_data without dereferencing
nid. Make the helper an inline function to suppress the warning, add type
checking and to apply any side-effects in the parameter list.
Link: https://lkml.kernel.org/r/20210520084809.8576-15-mgorman@techsingularity.net
Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Reviewed-by: Yang Shi <shy828301@gmail.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Dan Streetman <ddstreet@ieee.org>
Cc: David Hildenbrand <david@redhat.com>
Cc: Michal Hocko <mhocko@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | include/linux/mmzone.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index 0ed2c23ed3fb..fcb535560028 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -1064,7 +1064,10 @@ extern char numa_zonelist_order[]; #ifndef CONFIG_NUMA extern struct pglist_data contig_page_data; -#define NODE_DATA(nid) (&contig_page_data) +static inline struct pglist_data *NODE_DATA(int nid) +{ + return &contig_page_data; +} #define NODE_MEM_MAP(nid) mem_map #else /* CONFIG_NUMA */ |