From: Wang Qing wangqing@vivo.com
Use the helper function time_is_{before,after}_jiffies() to improve code readability.
Signed-off-by: Wang Qing wangqing@vivo.com --- drivers/md/dm-writecache.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/md/dm-writecache.c b/drivers/md/dm-writecache.c index 5630b47..125bb5d --- a/drivers/md/dm-writecache.c +++ b/drivers/md/dm-writecache.c @@ -16,6 +16,7 @@ #include <linux/pfn_t.h> #include <linux/libnvdimm.h> #include <linux/delay.h> +#include <linux/jiffies.h> #include "dm-io-tracker.h"
#define DM_MSG_PREFIX "writecache" @@ -1971,8 +1972,8 @@ static void writecache_writeback(struct work_struct *work) while (!list_empty(&wc->lru) && (wc->writeback_all || wc->freelist_size + wc->writeback_size <= wc->freelist_low_watermark || - (jiffies - container_of(wc->lru.prev, struct wc_entry, lru)->age >= - wc->max_age - wc->max_age / MAX_AGE_DIV))) { + time_is_before_eq_jiffies(container_of(wc->lru.prev, struct wc_entry, lru)->age + + wc->max_age - wc->max_age / MAX_AGE_DIV)) {
n_walked++; if (unlikely(n_walked > WRITEBACK_LATENCY) &&