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mm: move vmscan writes and file write accounting to the node

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As reclaim is now node-based, it follows that page write activity due to
page reclaim should also be accounted for on the node.  For consistency,
also account page writes and page dirtying on a per-node basis.

After this patch, there are a few remaining zone counters that may appear
strange but are fine.  NUMA stats are still per-zone as this is a
user-space interface that tools consume.  NR_MLOCK, NR_SLAB_*,
NR_PAGETABLE, NR_KERNEL_STACK and NR_BOUNCE are all allocations that
potentially pin low memory and cannot trivially be reclaimed on demand.
This information is still useful for debugging a page allocation failure
warning.

Link: http://lkml.kernel.org/r/1467970510-21195-21-git-send-email-mgorman@techsingularity.net
Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Hillf Danton <hillf.zj@alibaba-inc.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Rik van Riel <riel@surriel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Mel Gorman 2016-07-28 15:46:23 -07:00 committed by Linus Torvalds
parent 11fb998986
commit c4a25635b6
5 changed files with 15 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
include/linux/mmzone.h
View File

@ -122,10 +122,6 @@ enum zone_stat_item {
NR_KERNEL_STACK, NR_KERNEL_STACK,
/* Second 128 byte cacheline */ /* Second 128 byte cacheline */
NR_BOUNCE, NR_BOUNCE,
NR_VMSCAN_WRITE,
NR_VMSCAN_IMMEDIATE, /* Prioritise for reclaim when writeback ends */
NR_DIRTIED, /* page dirtyings since bootup */
NR_WRITTEN, /* page writings since bootup */
#if IS_ENABLED(CONFIG_ZSMALLOC) #if IS_ENABLED(CONFIG_ZSMALLOC)
NR_ZSPAGES, /* allocated in zsmalloc */ NR_ZSPAGES, /* allocated in zsmalloc */
#endif #endif
@ -165,6 +161,10 @@ enum node_stat_item {
NR_SHMEM_PMDMAPPED, NR_SHMEM_PMDMAPPED,
NR_ANON_THPS, NR_ANON_THPS,
NR_UNSTABLE_NFS, /* NFS unstable pages */ NR_UNSTABLE_NFS, /* NFS unstable pages */
NR_VMSCAN_WRITE,
NR_VMSCAN_IMMEDIATE, /* Prioritise for reclaim when writeback ends */
NR_DIRTIED, /* page dirtyings since bootup */
NR_WRITTEN, /* page writings since bootup */
NR_VM_NODE_STAT_ITEMS NR_VM_NODE_STAT_ITEMS
}; };

4
include/trace/events/writeback.h
View File

@ -415,8 +415,8 @@ TRACE_EVENT(global_dirty_state,
__entry->nr_dirty = global_node_page_state(NR_FILE_DIRTY); __entry->nr_dirty = global_node_page_state(NR_FILE_DIRTY);
__entry->nr_writeback = global_node_page_state(NR_WRITEBACK); __entry->nr_writeback = global_node_page_state(NR_WRITEBACK);
__entry->nr_unstable = global_node_page_state(NR_UNSTABLE_NFS); __entry->nr_unstable = global_node_page_state(NR_UNSTABLE_NFS);
__entry->nr_dirtied = global_page_state(NR_DIRTIED); __entry->nr_dirtied = global_node_page_state(NR_DIRTIED);
__entry->nr_written = global_page_state(NR_WRITTEN); __entry->nr_written = global_node_page_state(NR_WRITTEN);
__entry->background_thresh = background_thresh; __entry->background_thresh = background_thresh;
__entry->dirty_thresh = dirty_thresh; __entry->dirty_thresh = dirty_thresh;
__entry->dirty_limit = global_wb_domain.dirty_limit; __entry->dirty_limit = global_wb_domain.dirty_limit;

6
mm/page-writeback.c
View File

@ -2461,7 +2461,7 @@ void account_page_dirtied(struct page *page, struct address_space *mapping)
mem_cgroup_inc_page_stat(page, MEM_CGROUP_STAT_DIRTY); mem_cgroup_inc_page_stat(page, MEM_CGROUP_STAT_DIRTY);
__inc_node_page_state(page, NR_FILE_DIRTY); __inc_node_page_state(page, NR_FILE_DIRTY);
__inc_zone_page_state(page, NR_ZONE_WRITE_PENDING); __inc_zone_page_state(page, NR_ZONE_WRITE_PENDING);
__inc_zone_page_state(page, NR_DIRTIED); __inc_node_page_state(page, NR_DIRTIED);
__inc_wb_stat(wb, WB_RECLAIMABLE); __inc_wb_stat(wb, WB_RECLAIMABLE);
__inc_wb_stat(wb, WB_DIRTIED); __inc_wb_stat(wb, WB_DIRTIED);
task_io_account_write(PAGE_SIZE); task_io_account_write(PAGE_SIZE);
@ -2550,7 +2550,7 @@ void account_page_redirty(struct page *page)
wb = unlocked_inode_to_wb_begin(inode, &locked); wb = unlocked_inode_to_wb_begin(inode, &locked);
current->nr_dirtied--; current->nr_dirtied--;
dec_zone_page_state(page, NR_DIRTIED); dec_node_page_state(page, NR_DIRTIED);
dec_wb_stat(wb, WB_DIRTIED); dec_wb_stat(wb, WB_DIRTIED);
unlocked_inode_to_wb_end(inode, locked); unlocked_inode_to_wb_end(inode, locked);
} }
@ -2787,7 +2787,7 @@ int test_clear_page_writeback(struct page *page)
mem_cgroup_dec_page_stat(page, MEM_CGROUP_STAT_WRITEBACK); mem_cgroup_dec_page_stat(page, MEM_CGROUP_STAT_WRITEBACK);
dec_node_page_state(page, NR_WRITEBACK); dec_node_page_state(page, NR_WRITEBACK);
dec_zone_page_state(page, NR_ZONE_WRITE_PENDING); dec_zone_page_state(page, NR_ZONE_WRITE_PENDING);
inc_zone_page_state(page, NR_WRITTEN); inc_node_page_state(page, NR_WRITTEN);
} }
unlock_page_memcg(page); unlock_page_memcg(page);
return ret; return ret;

4
mm/vmscan.c
View File

@ -612,7 +612,7 @@ static pageout_t pageout(struct page *page, struct address_space *mapping,
ClearPageReclaim(page); ClearPageReclaim(page);
} }
trace_mm_vmscan_writepage(page); trace_mm_vmscan_writepage(page);
inc_zone_page_state(page, NR_VMSCAN_WRITE); inc_node_page_state(page, NR_VMSCAN_WRITE);
return PAGE_SUCCESS; return PAGE_SUCCESS;
} }
@ -1117,7 +1117,7 @@ static unsigned long shrink_page_list(struct list_head *page_list,
* except we already have the page isolated * except we already have the page isolated
* and know it's dirty * and know it's dirty
*/ */
inc_zone_page_state(page, NR_VMSCAN_IMMEDIATE); inc_node_page_state(page, NR_VMSCAN_IMMEDIATE);
SetPageReclaim(page); SetPageReclaim(page);
goto keep_locked; goto keep_locked;

8
mm/vmstat.c
View File

@ -931,10 +931,6 @@ const char * const vmstat_text[] = {
"nr_page_table_pages", "nr_page_table_pages",
"nr_kernel_stack", "nr_kernel_stack",
"nr_bounce", "nr_bounce",
"nr_vmscan_write",
"nr_vmscan_immediate_reclaim",
"nr_dirtied",
"nr_written",
#if IS_ENABLED(CONFIG_ZSMALLOC) #if IS_ENABLED(CONFIG_ZSMALLOC)
"nr_zspages", "nr_zspages",
#endif #endif
@ -971,6 +967,10 @@ const char * const vmstat_text[] = {
"nr_shmem_pmdmapped", "nr_shmem_pmdmapped",
"nr_anon_transparent_hugepages", "nr_anon_transparent_hugepages",
"nr_unstable", "nr_unstable",
"nr_vmscan_write",
"nr_vmscan_immediate_reclaim",
"nr_dirtied",
"nr_written",
/* enum writeback_stat_item counters */ /* enum writeback_stat_item counters */
"nr_dirty_threshold", "nr_dirty_threshold",