kernel/res_counter.c: replace simple_strtoull by kstrtoull

[akpm@linux-foundation.org: don't overwrite kstrtoull()'s errno]
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 5 insertions, 2 deletions

diff --git a/kernel/res_counter.c b/kernel/res_counter.c
index 51dbac6a3633..e791130f85a7 100644
--- a/kernel/res_counter.c
+++ b/kernel/res_counter.c
@@ -186,8 +186,11 @@ int res_counter_memparse_write_strategy(const char *buf,
 
         /* return RES_COUNTER_MAX(unlimited) if "-1" is specified */
         if (*buf == '-') {
-                res = simple_strtoull(buf + 1, &end, 10);
-                if (res != 1 || *end != '\0')
+                int rc = kstrtoull(buf + 1, 10, &res);
+
+                if (rc)
+                        return rc;
+                if (res != 1)
                         return -EINVAL;
                 *resp = RES_COUNTER_MAX;
                 return 0;