From: Nikolay Borisov <nborisov@xxxxxxxx> Subject: include/linux/mmzone.h: remove ancient/ambiguous comment Currently pg_data_t is just a struct which describes a NUMA node memory layout. Let's keep the comment simple and remove ambiguity. Link: http://lkml.kernel.org/r/1498220534-22717-1-git-send-email-nborisov@xxxxxxxx Signed-off-by: Nikolay Borisov <nborisov@xxxxxxxx> Acked-by: Michal Hocko <mhocko@xxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- include/linux/mmzone.h | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) diff -puN include/linux/mmzone.h~mm-remove-ancient-ambiguous-comment include/linux/mmzone.h --- a/include/linux/mmzone.h~mm-remove-ancient-ambiguous-comment +++ a/include/linux/mmzone.h @@ -603,12 +603,9 @@ extern struct page *mem_map; #endif /* - * The pg_data_t structure is used in machines with CONFIG_DISCONTIGMEM - * (mostly NUMA machines?) to denote a higher-level memory zone than the - * zone denotes. - * * On NUMA machines, each NUMA node would have a pg_data_t to describe - * it's memory layout. + * it's memory layout. On UMA machines there is a single pglist_data which + * describes the whole memory. * * Memory statistics and page replacement data structures are maintained on a * per-zone basis. _ -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
