Commit 584ff0df authored by Zhansaya Bagdauletkyzy's avatar Zhansaya Bagdauletkyzy Committed by Linus Torvalds
Browse files

mm: KSM: fix data type

ksm_stable_node_chains_prune_millisecs is declared as int, but in
stable__node_chains_prune_millisecs_store(), it can store values up to
UINT_MAX.  Change its type to unsigned int.

Link: https://lkml.kernel.org/r/20210806111351.GA71845@asus

Signed-off-by: default avatarZhansaya Bagdauletkyzy <zhansayabagdaulet@gmail.com>
Cc: Hugh Dickins <hughd@google.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 82e717ad
......@@ -259,7 +259,7 @@ static unsigned long ksm_stable_node_chains;
static unsigned long ksm_stable_node_dups;
/* Delay in pruning stale stable_node_dups in the stable_node_chains */
static int ksm_stable_node_chains_prune_millisecs = 2000;
static unsigned int ksm_stable_node_chains_prune_millisecs = 2000;
/* Maximum number of page slots sharing a stable node */
static int ksm_max_page_sharing = 256;
......@@ -3105,11 +3105,11 @@ stable_node_chains_prune_millisecs_store(struct kobject *kobj,
struct kobj_attribute *attr,
const char *buf, size_t count)
{
unsigned long msecs;
unsigned int msecs;
int err;
err = kstrtoul(buf, 10, &msecs);
if (err || msecs > UINT_MAX)
err = kstrtouint(buf, 10, &msecs);
if (err)
return -EINVAL;
ksm_stable_node_chains_prune_millisecs = msecs;
......
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