diff options
| author | Huang Ying <[email protected]> | 2020-06-01 21:49:19 -0700 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2020-06-02 10:59:09 -0700 |
| commit | 09fe06ce0bf5abe53b77a9515d7fb7579edec9c0 (patch) | |
| tree | 7a25eba3fee1b17f1f26c359638cbcb3e0f40a04 | |
| parent | 33e16272fe982084e986d4eb6d5b5ca51c0d214e (diff) | |
mm/swapfile.c: use prandom_u32_max()
To improve the code readability and take advantage of the common
implementation.
Signed-off-by: "Huang, Ying" <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Acked-by: Michal Hocko <[email protected]>
Cc: Minchan Kim <[email protected]>
Cc: Tim Chen <[email protected]>
Cc: Hugh Dickins <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Linus Torvalds <[email protected]>
| -rw-r--r-- | mm/swapfile.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/swapfile.c b/mm/swapfile.c index 2aa272376cae..18dfccb91123 100644 --- a/mm/swapfile.c +++ b/mm/swapfile.c @@ -3209,7 +3209,7 @@ 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), |