pdflush: use time_after() instead of open-coding it

Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/mm/pdflush.c b/mm/pdflush.c
index 9d834aa4b979..0cbe0c60c6bf 100644
--- a/mm/pdflush.c
+++ b/mm/pdflush.c
@@ -130,7 +130,7 @@ static int __pdflush(struct pdflush_work *my_work)
                  * Thread creation: For how long have there been zero
                  * available threads?
                  */
-                if (jiffies - last_empty_jifs > 1 * HZ) {
+                if (time_after(jiffies, last_empty_jifs + 1 * HZ)) {
                         /* unlocked list_empty() test is OK here */
                         if (list_empty(&pdflush_list)) {
                                 /* unlocked test is OK here */
@@ -151,7 +151,7 @@ static int __pdflush(struct pdflush_work *my_work)
                 if (nr_pdflush_threads <= MIN_PDFLUSH_THREADS)
                         continue;
                 pdf = list_entry(pdflush_list.prev, struct pdflush_work, list);
-                if (jiffies - pdf->when_i_went_to_sleep > 1 * HZ) {
+                if (time_after(jiffies, pdf->when_i_went_to_sleep + 1 * HZ)) {
                         /* Limit exit rate */
                         pdf->when_i_went_to_sleep = jiffies;
                         break;                                  /* exeunt */