diff options
Diffstat (limited to 'mm/damon/reclaim.c')
| -rw-r--r-- | mm/damon/reclaim.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/mm/damon/reclaim.c b/mm/damon/reclaim.c index e82631f39481..648d2a85523a 100644 --- a/mm/damon/reclaim.c +++ b/mm/damon/reclaim.c @@ -99,6 +99,15 @@ static unsigned long monitor_region_end __read_mostly; module_param(monitor_region_end, ulong, 0600); /* + * Skip anonymous pages reclamation. + * + * If this parameter is set as ``Y``, DAMON_RECLAIM does not reclaim anonymous + * pages. By default, ``N``. + */ +static bool skip_anon __read_mostly; +module_param(skip_anon, bool, 0600); + +/* * PID of the DAMON thread * * If DAMON_RECLAIM is enabled, this becomes the PID of the worker thread. @@ -142,6 +151,7 @@ static struct damos *damon_reclaim_new_scheme(void) static int damon_reclaim_apply_parameters(void) { struct damos *scheme; + struct damos_filter *filter; int err = 0; err = damon_set_attrs(ctx, &damon_reclaim_mon_attrs); @@ -152,6 +162,15 @@ static int damon_reclaim_apply_parameters(void) scheme = damon_reclaim_new_scheme(); if (!scheme) return -ENOMEM; + if (skip_anon) { + filter = damos_new_filter(DAMOS_FILTER_TYPE_ANON, true); + if (!filter) { + /* Will be freed by next 'damon_set_schemes()' below */ + damon_destroy_scheme(scheme); + return -ENOMEM; + } + damos_add_filter(scheme, filter); + } damon_set_schemes(ctx, &scheme, 1); return damon_set_region_biggest_system_ram_default(target, |