The patch titled Subject: block: xen: use time_is_before_eq_jiffies() instead of open coding it has been added to the -mm tree. Its filename is block-xen-use-time_is_before_eq_jiffies-instead-of-open-coding-it.patch This patch should soon appear at https://ozlabs.org/~akpm/mmots/broken-out/block-xen-use-time_is_before_eq_jiffies-instead-of-open-coding-it.patch and later at https://ozlabs.org/~akpm/mmotm/broken-out/block-xen-use-time_is_before_eq_jiffies-instead-of-open-coding-it.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next and is updated there every 3-4 working days ------------------------------------------------------ From: Wang Qing <wangqing@xxxxxxxx> Subject: block: xen: use time_is_before_eq_jiffies() instead of open coding it Use the helper function time_is_{before,after}_jiffies() to improve code readability. Link: https://lkml.kernel.org/r/1650621172-66967-2-git-send-email-wangqing@xxxxxxxx Signed-off-by: Wang Qing <wangqing@xxxxxxxx> Cc: "Roger Pau Monné" <roger.pau@xxxxxxxxxx> Cc: Jens Axboe <axboe@xxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- drivers/block/xen-blkback/blkback.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) --- a/drivers/block/xen-blkback/blkback.c~block-xen-use-time_is_before_eq_jiffies-instead-of-open-coding-it +++ a/drivers/block/xen-blkback/blkback.c @@ -42,6 +42,7 @@ #include <linux/delay.h> #include <linux/freezer.h> #include <linux/bitmap.h> +#include <linux/jiffies.h> #include <xen/events.h> #include <xen/page.h> @@ -134,8 +135,8 @@ module_param(log_stats, int, 0644); static inline bool persistent_gnt_timeout(struct persistent_gnt *persistent_gnt) { - return pgrant_timeout && (jiffies - persistent_gnt->last_used >= - HZ * pgrant_timeout); + return pgrant_timeout && time_is_before_eq_jiffies( + persistent_gnt->last_used + HZ * pgrant_timeout); } #define vaddr(page) ((unsigned long)pfn_to_kaddr(page_to_pfn(page))) _ Patches currently in -mm which might be from wangqing@xxxxxxxx are block-xen-use-time_is_before_eq_jiffies-instead-of-open-coding-it.patch gpu-drm-i915-use-time_is_after_jiffies-instead-of-open-coding-it.patch gpu-drm-radeon-use-time_is_before_jiffies-instead-of-open-coding-it.patch hid-use-time_is_after_jiffies-instead-of-open-coding-it.patch md-use-time_is_before_eq_jiffies-instead-of-open-coding-it.patch net-wireless-marvell-use-time_is_before_jiffies-instead-of-open-coding-it.patch scsi-bfa-use-time_is_before_jiffies-instead-of-open-coding-it.patch timekeeping-use-time_is_before_jiffies-instead-of-open-coding-it.patch net-decnet-use-time_is_before_jiffies-instead-of-open-coding-it.patch