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mm/damon/core: support committing ops_filters

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DAMON kernel API callers should use damon_commit_ctx() to install DAMON
parameters including DAMOS filters.  But damos_commit_ops_filters(), which
is called by damon_commit_ctx() for filters installing, is not handling
damos->ops_filters.  Hence, no DAMON kernel API caller can use
damos->ops_filters.  Do the committing of the ops_filters to make it
usable.

Link: https://lkml.kernel.org/r/20250304211913.53574-4-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
SeongJae Park 2025-03-04 13:19:07 -08:00 committed by Andrew Morton
parent ac7b094bf4
commit 3607cc590f
1 changed files with 39 additions and 1 deletions
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40
mm/damon/core.c
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@ -820,7 +820,7 @@ static void damos_commit_filter(
damos_commit_filter_arg(dst, src);
}
static int damos_commit_filters(struct damos *dst, struct damos *src)
static int damos_commit_core_filters(struct damos *dst, struct damos *src)
{
struct damos_filter *dst_filter, *next, *src_filter, *new_filter;
int i = 0, j = 0;
@ -848,6 +848,44 @@ static int damos_commit_filters(struct damos *dst, struct damos *src)
return 0;
}
static int damos_commit_ops_filters(struct damos *dst, struct damos *src)
{
struct damos_filter *dst_filter, *next, *src_filter, *new_filter;
int i = 0, j = 0;
damos_for_each_ops_filter_safe(dst_filter, next, dst) {
src_filter = damos_nth_filter(i++, src);
if (src_filter)
damos_commit_filter(dst_filter, src_filter);
else
damos_destroy_filter(dst_filter);
}
damos_for_each_ops_filter_safe(src_filter, next, src) {
if (j++ < i)
continue;
new_filter = damos_new_filter(
src_filter->type, src_filter->matching,
src_filter->allow);
if (!new_filter)
return -ENOMEM;
damos_commit_filter_arg(new_filter, src_filter);
damos_add_filter(dst, new_filter);
}
return 0;
}
static int damos_commit_filters(struct damos *dst, struct damos *src)
{
int err;
err = damos_commit_core_filters(dst, src);
if (err)
return err;
return damos_commit_ops_filters(dst, src);
}
static struct damos *damon_nth_scheme(int n, struct damon_ctx *ctx)
{
struct damos *s;