diff options
| author | Song Hu <husong@kylinos.cn> | 2026-07-21 07:00:08 -0700 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2026-08-06 18:57:22 -0700 |
| commit | 51fa46c364039d5f44737f24e2bf22ca5e143d0f (patch) | |
| tree | 950cb10d86cf9e3b6a6a80a6ba164aae263063c8 /include | |
| parent | 23e82f0223047c58c999f6147644d3bb237081ee (diff) | |
mm/damon: update outdated comment about DAMOS filter handling
The kernel-doc comment above enum damos_filter_type states that only the
anon and memcg type filters are handled by damon_operations (and therefore
accounted as 'tried'), and that DAMON_OPS_VADDR and DAMON_OPS_FVADDR do
not support those two filter types.
Neither is accurate anymore. damos_filter_for_ops() routes every filter
type except ADDR and TARGET to the operations layer, and the VADDR and
FVADDR operations (the latter being a copy of the former) handle all of
those types through damos_folio_filter_match() / damos_va_filter_out().
Update the comment to match the code.
Link: https://lore.kernel.org/20260721140011.269802-1-sj@kernel.org
Signed-off-by: Song Hu <husong@kylinos.cn>
Reviewed-by: SJ Park <sj@kernel.org>
Signed-off-by: SJ Park <sj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/damon.h | 17 |
1 files changed, 8 insertions, 9 deletions
diff --git a/include/linux/damon.h b/include/linux/damon.h index 327f534696aa..0c8b7ddef9ab 100644 --- a/include/linux/damon.h +++ b/include/linux/damon.h @@ -398,16 +398,15 @@ struct damos_stat { * @DAMOS_FILTER_TYPE_TARGET: Data Access Monitoring target. * @NR_DAMOS_FILTER_TYPES: Number of filter types. * - * The anon pages type and memcg type filters are handled by underlying - * &struct damon_operations as a part of scheme action trying, and therefore - * accounted as 'tried'. In contrast, other types are handled by core layer - * before trying of the action and therefore not accounted as 'tried'. + * All types except &DAMOS_FILTER_TYPE_ADDR and &DAMOS_FILTER_TYPE_TARGET + * are handled by the underlying &struct damon_operations as a part of scheme + * action trying, and therefore accounted as 'tried'. In contrast, + * &DAMOS_FILTER_TYPE_ADDR and &DAMOS_FILTER_TYPE_TARGET filters are handled + * by the core layer before trying of the action, and therefore not accounted + * as 'tried'. * - * The support of the filters that handled by &struct damon_operations depend - * on the running &struct damon_operations. - * &enum DAMON_OPS_PADDR supports both anon pages type and memcg type filters, - * while &enum DAMON_OPS_VADDR and &enum DAMON_OPS_FVADDR don't support any of - * the two types. + * Support for the operations-handled filters depends on the running + * &struct damon_operations. */ enum damos_filter_type { DAMOS_FILTER_TYPE_ANON, |