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mm: workingset: add vmstat counter for shadow nodes

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Make it easier to catch bugs in the shadow node shrinker by adding a
counter for the shadow nodes in circulation.

[[email protected]: assert that irqs are disabled, for __inc_lruvec_page_state()]
[[email protected]: s/WARN_ON_ONCE/VM_WARN_ON_ONCE/, per Johannes]
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Johannes Weiner <[email protected]>
Reviewed-by: Andrew Morton <[email protected]>
Acked-by: Peter Zijlstra (Intel) <[email protected]>
Cc: Rik van Riel <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Johannes Weiner 2018-10-26 15:06:39 -07:00 • committed by Linus Torvalds
commit 68d48e6a2d
3 changed files with 14 additions and 2 deletions
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mm/vmstat.c
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@ -1143,6 +1143,7 @@ const char * const vmstat_text[] = {
"nr_slab_unreclaimable",
"nr_isolated_anon",
"nr_isolated_file",
"workingset_nodes",
"workingset_refault",
"workingset_activate",
"workingset_restore",