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-rw-r--r--mm/vmpressure.c35
1 files changed, 7 insertions, 28 deletions
diff --git a/mm/vmpressure.c b/mm/vmpressure.c
index 85350ce2d25d..4854584ec436 100644
--- a/mm/vmpressure.c
+++ b/mm/vmpressure.c
@@ -342,26 +342,6 @@ void vmpressure_prio(gfp_t gfp, struct mem_cgroup *memcg, int prio)
vmpressure(gfp, memcg, true, vmpressure_win, 0);
}
-static enum vmpressure_levels str_to_level(const char *arg)
-{
- enum vmpressure_levels level;
-
- for (level = 0; level < VMPRESSURE_NUM_LEVELS; level++)
- if (!strcmp(vmpressure_str_levels[level], arg))
- return level;
- return -1;
-}
-
-static enum vmpressure_modes str_to_mode(const char *arg)
-{
- enum vmpressure_modes mode;
-
- for (mode = 0; mode < VMPRESSURE_NUM_MODES; mode++)
- if (!strcmp(vmpressure_str_modes[mode], arg))
- return mode;
- return -1;
-}
-
#define MAX_VMPRESSURE_ARGS_LEN (strlen("critical") + strlen("hierarchy") + 2)
/**
@@ -390,27 +370,26 @@ int vmpressure_register_event(struct mem_cgroup *memcg,
char *token;
int ret = 0;
- spec_orig = spec = kzalloc(MAX_VMPRESSURE_ARGS_LEN + 1, GFP_KERNEL);
+ spec_orig = spec = kstrndup(args, MAX_VMPRESSURE_ARGS_LEN, GFP_KERNEL);
if (!spec) {
ret = -ENOMEM;
goto out;
}
- strncpy(spec, args, MAX_VMPRESSURE_ARGS_LEN);
/* Find required level */
token = strsep(&spec, ",");
- level = str_to_level(token);
- if (level == -1) {
- ret = -EINVAL;
+ level = match_string(vmpressure_str_levels, VMPRESSURE_NUM_LEVELS, token);
+ if (level < 0) {
+ ret = level;
goto out;
}
/* Find optional mode */
token = strsep(&spec, ",");
if (token) {
- mode = str_to_mode(token);
- if (mode == -1) {
- ret = -EINVAL;
+ mode = match_string(vmpressure_str_modes, VMPRESSURE_NUM_MODES, token);
+ if (mode < 0) {
+ ret = mode;
goto out;
}
}