Commit 194df9f6 authored by Christoph Hellwig's avatar Christoph Hellwig Committed by Jens Axboe
Browse files

mm: remove NR_BOUNCE zone stat 



The stat is always 0 now, so remove it and hardwire the user visible
output to 0.

Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Reviewed-by: default avatarHannes Reinecke <hare@suse.de>
Reviewed-by: default avatarJohannes Thumshirn <johannes.thumshirn@wdc.com>
Link: https://lore.kernel.org/r/20250505081138.3435992-8-hch@lst.de


Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent eeadd68e

drivers/base/node.c

+1 −1
Original line number Diff line number Diff line
@@ -468,7 +468,7 @@ static ssize_t node_read_meminfo(struct device *dev, 
			     nid, K(node_page_state(pgdat, NR_PAGETABLE)),

			     nid, K(node_page_state(pgdat, NR_SECONDARY_PAGETABLE)),

			     nid, 0UL,

			     nid, K(sum_zone_node_page_state(nid, NR_BOUNCE)),

			     nid, 0UL,

			     nid, K(node_page_state(pgdat, NR_WRITEBACK_TEMP)),

			     nid, K(sreclaimable +

				    node_page_state(pgdat, NR_KERNEL_MISC_RECLAIMABLE)),

fs/proc/meminfo.c

+1 −2
Original line number Diff line number Diff line
@@ -120,8 +120,7 @@ static int meminfo_proc_show(struct seq_file *m, void *v) 
		    global_node_page_state(NR_SECONDARY_PAGETABLE));



	show_val_kb(m, "NFS_Unstable:   ", 0);

	show_val_kb(m, "Bounce:         ",

		    global_zone_page_state(NR_BOUNCE));

	show_val_kb(m, "Bounce:         ", 0);

	show_val_kb(m, "WritebackTmp:   ",

		    global_node_page_state(NR_WRITEBACK_TEMP));

	show_val_kb(m, "CommitLimit:    ", vm_commit_limit());

include/linux/mmzone.h

+0 −1
Original line number Diff line number Diff line
@@ -148,7 +148,6 @@ enum zone_stat_item { 
	NR_ZONE_WRITE_PENDING,	/* Count of dirty, writeback and unstable pages */

	NR_MLOCK,		/* mlock()ed pages found and moved off LRU */

	/* Second 128 byte cacheline */

	NR_BOUNCE,

#if IS_ENABLED(CONFIG_ZSMALLOC)

	NR_ZSPAGES,		/* allocated in zsmalloc */

#endif

mm/show_mem.c

+2 −2
Original line number Diff line number Diff line
@@ -223,7 +223,7 @@ static void show_free_areas(unsigned int filter, nodemask_t *nodemask, int max_z 
		global_node_page_state(NR_SHMEM),

		global_node_page_state(NR_PAGETABLE),

		global_node_page_state(NR_SECONDARY_PAGETABLE),

		global_zone_page_state(NR_BOUNCE),

		0UL,

		global_node_page_state(NR_KERNEL_MISC_RECLAIMABLE),

		global_zone_page_state(NR_FREE_PAGES),

		free_pcp,
@@ -341,7 +341,7 @@ static void show_free_areas(unsigned int filter, nodemask_t *nodemask, int max_z 
			K(zone->present_pages),

			K(zone_managed_pages(zone)),

			K(zone_page_state(zone, NR_MLOCK)),

			K(zone_page_state(zone, NR_BOUNCE)),

			0UL,

			K(free_pcp),

			K(this_cpu_read(zone->per_cpu_pageset->count)),

			K(zone_page_state(zone, NR_FREE_CMA_PAGES)));