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Commit ef83735b authored by Chao Yu's avatar Chao Yu Committed by Jaegeuk Kim
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f2fs: stop gc/discard thread after fs shutdown 



Once filesystem shuts down, daemons like gc/discard thread should be
aware of it, and do exit, in addtion, drop all cached pending discard
commands and turn off real-time discard mode.

Signed-off-by: default avatarChao Yu <yuchao0@huawei.com>
Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
parent cb472c71

fs/f2fs/f2fs.h

+1 −0
Original line number Diff line number Diff line
@@ -2863,6 +2863,7 @@ void invalidate_blocks(struct f2fs_sb_info *sbi, block_t addr); 
bool is_checkpointed_data(struct f2fs_sb_info *sbi, block_t blkaddr);

void init_discard_policy(struct discard_policy *dpolicy, int discard_type,

						unsigned int granularity);

void drop_discard_cmd(struct f2fs_sb_info *sbi);

void stop_discard_thread(struct f2fs_sb_info *sbi);

bool f2fs_wait_discard_bios(struct f2fs_sb_info *sbi);

void clear_prefree_segments(struct f2fs_sb_info *sbi, struct cp_control *cpc);

fs/f2fs/file.c

+7 −0
Original line number Diff line number Diff line
@@ -1851,6 +1851,13 @@ static int f2fs_ioc_shutdown(struct file *filp, unsigned long arg) 
		ret = -EINVAL;

		goto out;

	}



	stop_gc_thread(sbi);

	stop_discard_thread(sbi);



	drop_discard_cmd(sbi);

	clear_opt(sbi, DISCARD);



	f2fs_update_time(sbi, REQ_TIME);

out:

	mnt_drop_write_file(filp);

fs/f2fs/segment.c

+5 −0
Original line number Diff line number Diff line
@@ -1344,6 +1344,11 @@ static bool __drop_discard_cmd(struct f2fs_sb_info *sbi) 
	return dropped;

}



void drop_discard_cmd(struct f2fs_sb_info *sbi)

{

	__drop_discard_cmd(sbi);

}



static unsigned int __wait_one_discard_bio(struct f2fs_sb_info *sbi,

							struct discard_cmd *dc)

{