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| author | Huang Ying <ying.huang@intel.com> | 2020-06-01 21:49:19 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-06-02 10:59:09 -0700 |
| commit | 09fe06ce0bf5abe53b77a9515d7fb7579edec9c0 (patch) | |
| tree | 7a25eba3fee1b17f1f26c359638cbcb3e0f40a04 /mm/swapfile.c | |
| parent | 33e16272fe982084e986d4eb6d5b5ca51c0d214e (diff) | |
| download | linux-09fe06ce0bf5abe53b77a9515d7fb7579edec9c0.tar.gz linux-09fe06ce0bf5abe53b77a9515d7fb7579edec9c0.tar.bz2 linux-09fe06ce0bf5abe53b77a9515d7fb7579edec9c0.zip | |
mm/swapfile.c: use prandom_u32_max()
To improve the code readability and take advantage of the common
implementation.
Signed-off-by: "Huang, Ying" <ying.huang@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Hugh Dickins <hughd@google.com>
Link: http://lkml.kernel.org/r/20200512081013.520201-1-ying.huang@intel.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/swapfile.c')
| -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), |