Commit 016c13daa5c9 ("mm, page_alloc: use masks and shifts when converting GFP
flags to migrate types") has swapped MIGRATE_MOVABLE and MIGRATE_RECLAIMABLE
in the enum definition. However, migratetype_names wasn't updated to reflect
that. As a result, the file /proc/pagetypeinfo shows the counts for Movable as
Reclaimable and vice versa.
Additionally, commit 0aaa29a56e4f ("mm, page_alloc: reserve pageblocks for
high-order atomic allocations on demand") introduced MIGRATE_HIGHATOMIC, but
did not add a letter to distinguish it into show_migration_types(), so it
doesn't appear in the listing of free areas during page alloc failures or oom
kills.
This patch fixes both problems. The atomic reserves will show with a letter
'H' in the free areas listings.
Fixes: 016c13daa5c9e4827eca703e2f0621c131f2cca3
Fixes: 0aaa29a56e4fb0fc9e24edb649e2733a672ca099
Signed-off-by: Vlastimil Babka <vbabka@xxxxxxx>
---
Bah, forgot a comma in the previous patch. BTW this is for 4.4, fixes rc1 bugs.
mm/page_alloc.c | 3 ++-
mm/vmstat.c | 2 +-
2 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 17a3c66..9d666df 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -3647,8 +3647,9 @@ static void show_migration_types(unsigned char type)
{
static const char types[MIGRATE_TYPES] = {
[MIGRATE_UNMOVABLE] = 'U',
- [MIGRATE_RECLAIMABLE] = 'E',
[MIGRATE_MOVABLE] = 'M',
+ [MIGRATE_RECLAIMABLE] = 'E',
+ [MIGRATE_HIGHATOMIC] = 'H',
#ifdef CONFIG_CMA
[MIGRATE_CMA] = 'C',
#endif
diff --git a/mm/vmstat.c b/mm/vmstat.c
index 879a2be..2ec3434 100644
--- a/mm/vmstat.c
+++ b/mm/vmstat.c
@@ -921,8 +921,8 @@ static void walk_zones_in_node(struct seq_file *m, pg_data_t *pgdat,
#ifdef CONFIG_PROC_FS
static char * const migratetype_names[MIGRATE_TYPES] = {
"Unmovable",
- "Reclaimable",
"Movable",
+ "Reclaimable",
"HighAtomic",
#ifdef CONFIG_CMA
"CMA",
--
2.6.3
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