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[v2,1/5] percpu: fix a comment about the chunks ordering

Message ID 20210407182618.2728388-2-guro@fb.com (mailing list archive)
State New, archived
Headers show
Series percpu: partial chunk depopulation | expand

Commit Message

Roman Gushchin April 7, 2021, 6:26 p.m. UTC 
Since the commit 3e54097beb22 ("percpu: manage chunks based on
contig_bits instead of free_bytes") chunks are sorted based on the
size of the biggest continuous free area instead of the total number
of free bytes. Update the corresponding comment to reflect this.

Signed-off-by: Roman Gushchin <guro@fb.com>
---
 mm/percpu.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)
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Patch

diff --git a/mm/percpu.c b/mm/percpu.c
index 6596a0a4286e..2f27123bb489 100644
--- a/mm/percpu.c
+++ b/mm/percpu.c
@@ -99,7 +99,10 @@ 
 
 #include "percpu-internal.h"
 
-/* the slots are sorted by free bytes left, 1-31 bytes share the same slot */
+/*
+ * The slots are sorted by the size of the biggest continuous free area.
+ * 1-31 bytes share the same slot.
+ */
 #define PCPU_SLOT_BASE_SHIFT		5
 /* chunks in slots below this are subject to being sidelined on failed alloc */
 #define PCPU_SLOT_FAIL_THRESHOLD	3