To improve the code readability and get random number with higher
quality.
Signed-off-by: "Huang, Ying" <[email protected]>
Cc: Michal Hocko <[email protected]>
Cc: Minchan Kim <[email protected]>
Cc: Tim Chen <[email protected]>
Cc: Hugh Dickins <[email protected]>
---
mm/swapfile.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/mm/swapfile.c b/mm/swapfile.c
index a0a123e59ce6..2ec8b21201d6 100644
--- a/mm/swapfile.c
+++ b/mm/swapfile.c
@@ -3220,7 +3220,7 @@ SYSCALL_DEFINE2(swapon, const char __user *, specialfile,
int, swap_flags)
* select a random position to start with to help wear leveling
* SSD
*/
- p->cluster_next = 1 + (prandom_u32() % p->highest_bit);
+ p->cluster_next = 1 + prandom_u32_max(p->highest_bit);
nr_cluster = DIV_ROUND_UP(maxpages, SWAPFILE_CLUSTER);
cluster_info = kvcalloc(nr_cluster, sizeof(*cluster_info),
--
2.26.2
