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Commit 1d7be270 authored by Jaegeuk Kim's avatar Jaegeuk Kim
Browse files

f2fs: try to freeze in gc and discard threads 



This allows to freeze gc and discard threads.

Cc: stable@vger.kernel.org
Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
parent b7b7c4cf

fs/f2fs/gc.c

+5 −4
Original line number Original line Diff line number Diff line
@@ -32,13 +32,14 @@ static int gc_thread_func(void *data) 




	wait_ms = gc_th->min_sleep_time;

	wait_ms = gc_th->min_sleep_time;





	set_freezable();

	do {

	do {

		if (try_to_freeze())

			continue;

		else

		wait_event_interruptible_timeout(*wq,

		wait_event_interruptible_timeout(*wq,

						kthread_should_stop(),

				kthread_should_stop() || freezing(current),

				msecs_to_jiffies(wait_ms));

				msecs_to_jiffies(wait_ms));



		if (try_to_freeze())

			continue;

		if (kthread_should_stop())

		if (kthread_should_stop())

			break;

			break;

fs/f2fs/segment.c

+16 −9
Original line number Original line Diff line number Diff line
@@ -16,6 +16,7 @@ 
#include <linux/kthread.h>

#include <linux/kthread.h>

#include <linux/swap.h>

#include <linux/swap.h>

#include <linux/timer.h>

#include <linux/timer.h>

#include <linux/freezer.h>





#include "f2fs.h"

#include "f2fs.h"

#include "segment.h"

#include "segment.h"
@@ -1059,7 +1060,15 @@ static int issue_discard_thread(void *data) 
	struct f2fs_sb_info *sbi = data;

	struct f2fs_sb_info *sbi = data;

	struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;

	struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;

	wait_queue_head_t *q = &dcc->discard_wait_queue;

	wait_queue_head_t *q = &dcc->discard_wait_queue;

repeat:



	set_freezable();



	do {

		wait_event_interruptible(*q, kthread_should_stop() ||

					freezing(current) ||

					atomic_read(&dcc->discard_cmd_cnt));

		if (try_to_freeze())

			continue;

		if (kthread_should_stop())

		if (kthread_should_stop())

			return 0;

			return 0;
@@ -1067,10 +1076,8 @@ static int issue_discard_thread(void *data) 
		__wait_discard_cmd(sbi, true);

		__wait_discard_cmd(sbi, true);





		congestion_wait(BLK_RW_SYNC, HZ/50);

		congestion_wait(BLK_RW_SYNC, HZ/50);



	} while (!kthread_should_stop());

	wait_event_interruptible(*q, kthread_should_stop() ||

	return 0;

				atomic_read(&dcc->discard_cmd_cnt));

	goto repeat;

}

}





#ifdef CONFIG_BLK_DEV_ZONED

#ifdef CONFIG_BLK_DEV_ZONED