[PATCH -next 3/3] mm/zswap: skip confusing print info
From: Liu Shixin <hidden>
Date: 2022-08-25 13:46:08
Also in:
lkml
Subsystem:
memory management, the rest, zswap compressed swap caching · Maintainers:
Andrew Morton, Linus Torvalds, Johannes Weiner, Yosry Ahmed, Nhat Pham
It's confusing when we disable zswap while zswap is init failed or has no pool. If no change required, just return directly. Signed-off-by: Liu Shixin <redacted> --- mm/zswap.c | 9 +++++++++ 1 file changed, 9 insertions(+)
diff --git a/mm/zswap.c b/mm/zswap.c
index 90df72aceb08..fdf376f239fd 100644
--- a/mm/zswap.c
+++ b/mm/zswap.c@@ -886,6 +886,15 @@ static int zswap_zpool_param_set(const char *val, static int zswap_enabled_param_set(const char *val, const struct kernel_param *kp) { + bool res; + + if (kstrtobool(val, &res)) + return -EINVAL; + + /* no change required */ + if (res == *(bool *)kp->arg) + return 0; + if (system_state == SYSTEM_RUNNING) { mutex_lock(&zswap_init_lock); if (zswap_setup()) {
--
2.25.1