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mm: Add PGREUSE counter

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This accounts for wp_page_reuse() case, where we reused a page for COW.

Signed-off-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Peter Xu
2020-08-21 19:49:58 -04:00
committed by Linus Torvalds
parent a308c71bf1
commit 798a6b87ec
3 changed files with 3 additions and 0 deletions
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include/linux/vm_event_item.h
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@@ -30,6 +30,7 @@ enum vm_event_item { PGPGIN, PGPGOUT, PSWPIN, PSWPOUT,
PGFAULT, PGMAJFAULT,
PGLAZYFREED,
PGREFILL,
PGREUSE,
PGSTEAL_KSWAPD,
PGSTEAL_DIRECT,
PGSCAN_KSWAPD,