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mm: delete stale comment about cachelines

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These comments have been wrong since commit a211c6550e ("mm: page_alloc:
defrag_mode kswapd/kcompactd watermarks") added NR_FREE_PAGES_BLOCKS. 
Since nobody has complained about it in the last year, it seems unlikely
these comments were particularly useful anyway, so delete them.

Link: https://lore.kernel.org/20260601-zone_stat_item-comment-v1-1-f452dd91d5eb@google.com
Signed-off-by: Brendan Jackman <jackmanb@google.com>
Acked-by: David Hildenbrand (Arm) <david@kernel.org>
Reviewed-by: Lorenzo Stoakes <ljs@kernel.org>
Acked-by: Vlastimil Babka (SUSE) <vbabka@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Brendan Jackman
2026-06-01 11:40:09 +00:00
committed by Andrew Morton
parent 8f7275c174
commit cdea4acce0
1 changed files with 0 additions and 2 deletions
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include/linux/mmzone.h
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@@ -214,7 +214,6 @@ enum numa_stat_item {
#endif
enum zone_stat_item {
/* First 128 byte cacheline (assuming 64 bit words) */
NR_FREE_PAGES,
NR_FREE_PAGES_BLOCKS,
NR_ZONE_LRU_BASE, /* Used only for compaction and reclaim retry */
@@ -225,7 +224,6 @@ enum zone_stat_item {
NR_ZONE_UNEVICTABLE,
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 */
#if IS_ENABLED(CONFIG_ZSMALLOC)
NR_ZSPAGES, /* allocated in zsmalloc */
#endif