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List-Subscribe: List-Unsubscribe: Andrew - could we drop this, it's breaking mm-new. On Mon, Sep 01, 2025 at 03:37:28PM -0300, Thadeu Lima de Souza Cascardo wrote: > When OOM is triggered, it will show where the pages might be for each zone. > When using zram, it might look like lots of pages are missing. After this > patch, zspages are shown as below. > > [ 48.792859] Node 0 DMA free:2812kB boost:0kB min:60kB low:72kB high:84kB reserved_highatomic:0KB free_highatomic:0KB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB zspages:11160kB present:15992kB managed:15360kB mlocked:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB > [ 48.792962] lowmem_reserve[]: 0 956 956 956 956 > [ 48.792988] Node 0 DMA32 free:3512kB boost:0kB min:3912kB low:4888kB high:5864kB reserved_highatomic:0KB free_highatomic:0KB active_anon:0kB inactive_anon:28kB active_file:8kB inactive_file:16kB unevictable:0kB writepending:0kB zspages:916780kB present:1032064kB managed:978944kB mlocked:0kB bounce:0kB free_pcp:500kB local_pcp:248kB free_cma:0kB > [ 48.793118] lowmem_reserve[]: 0 0 0 0 0 > > Signed-off-by: Thadeu Lima de Souza Cascardo > --- > mm/show_mem.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/mm/show_mem.c b/mm/show_mem.c > index 41999e94a56d..ecf20a93ea54 100644 > --- a/mm/show_mem.c > +++ b/mm/show_mem.c > @@ -310,6 +310,7 @@ static void show_free_areas(unsigned int filter, nodemask_t *nodemask, int max_z > " inactive_file:%lukB" > " unevictable:%lukB" > " writepending:%lukB" > + " zspages:%lukB" > " present:%lukB" > " managed:%lukB" > " mlocked:%lukB" > @@ -332,6 +333,7 @@ static void show_free_areas(unsigned int filter, nodemask_t *nodemask, int max_z > K(zone_page_state(zone, NR_ZONE_INACTIVE_FILE)), > K(zone_page_state(zone, NR_ZONE_UNEVICTABLE)), > K(zone_page_state(zone, NR_ZONE_WRITE_PENDING)), #ifdef CONFIG_ZSMALLOC > + K(zone_page_state(zone, NR_ZSPAGES)), #endif :) This is breaking the build, please fix cheers! > K(zone->present_pages), > K(zone_managed_pages(zone)), > K(zone_page_state(zone, NR_MLOCK)), > -- > 2.47.2 > >