Commit 6fa11605 authored by Chao Yu's avatar Chao Yu Committed by Jaegeuk Kim
Browse files

f2fs: fix timeout precision of f2fs_io_schedule_timeout_killable() 



Sometimes, f2fs_io_schedule_timeout_killable(HZ) may delay for about 2
seconds, this is because __f2fs_schedule_timeout(DEFAULT_SCHEDULE_TIMEOUT)
may delay for about 2 * DEFAULT_SCHEDULE_TIMEOUT due to its precision, but
we only account the delay as DEFAULT_SCHEDULE_TIMEOUT as below, fix it.

f2fs_io_schedule_timeout_killable()
..
	timeout -= DEFAULT_SCHEDULE_TIMEOUT;

Signed-off-by: default avatarChao Yu <chao@kernel.org>
Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
parent da90b671

fs/f2fs/f2fs.h

+3 −4
Original line number Diff line number Diff line
@@ -4985,13 +4985,12 @@ static inline void __f2fs_schedule_timeout(long timeout, bool io) 


static inline void f2fs_io_schedule_timeout_killable(long timeout)

{

	while (timeout) {

	unsigned long last_time = jiffies + timeout;



	while (jiffies < last_time) {

		if (fatal_signal_pending(current))

			return;

		__f2fs_schedule_timeout(DEFAULT_SCHEDULE_TIMEOUT, true);

		if (timeout <= DEFAULT_SCHEDULE_TIMEOUT)

			return;

		timeout -= DEFAULT_SCHEDULE_TIMEOUT;

	}

}