Unverified Commit 71fcd481 authored by openeuler-ci-bot's avatar openeuler-ci-bot Committed by Gitee
Browse files

!14456 f2fs: fix race in concurrent f2fs_stop_gc_thread 

Merge Pull Request from: @ci-robot 
 
PR sync from: Cai Xinchen <caixinchen1@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/BWFKG5Q5PPAKZND7CH6LMFVOZE7Q76LS/ 
 
https://gitee.com/src-openeuler/kernel/issues/IBEAES 
 
Link:https://gitee.com/openeuler/kernel/pulls/14456
parents 7801b762 816b17d7

fs/f2fs/file.c

+6 −3
Original line number Diff line number Diff line
@@ -2309,8 +2309,11 @@ static int f2fs_ioc_shutdown(struct file *filp, unsigned long arg) 
		goto out;

	}



	/* grab sb->s_umount to avoid racing w/ remount() */

	down_read(&sbi->sb->s_umount);

	/*

	 * grab sb->s_umount to avoid racing w/ remount() and other shutdown

	 * paths.

	 */

	down_write(&sbi->sb->s_umount);



	f2fs_stop_gc_thread(sbi);

	f2fs_stop_discard_thread(sbi);
@@ -2318,7 +2321,7 @@ static int f2fs_ioc_shutdown(struct file *filp, unsigned long arg) 
	f2fs_drop_discard_cmd(sbi);

	clear_opt(sbi, DISCARD);



	up_read(&sbi->sb->s_umount);

	up_write(&sbi->sb->s_umount);



	f2fs_update_time(sbi, REQ_TIME);

out: