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f2fs: stop gc/discard thread after fs shutdown

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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: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Chao Yu 2018-01-18 17:23:29 +08:00 committed by Jaegeuk Kim
parent d027c48447
commit 7950e9ac63
3 changed files with 13 additions and 0 deletions
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1
fs/f2fs/f2fs.h
View File

@ -2726,6 +2726,7 @@ void invalidate_blocks(struct f2fs_sb_info *sbi, block_t addr);
bool is_checkpointed_data(struct f2fs_sb_info *sbi, block_t blkaddr); bool is_checkpointed_data(struct f2fs_sb_info *sbi, block_t blkaddr);
void init_discard_policy(struct discard_policy *dpolicy, int discard_type, void init_discard_policy(struct discard_policy *dpolicy, int discard_type,
unsigned int granularity); unsigned int granularity);
void drop_discard_cmd(struct f2fs_sb_info *sbi);
void stop_discard_thread(struct f2fs_sb_info *sbi); void stop_discard_thread(struct f2fs_sb_info *sbi);
bool f2fs_wait_discard_bios(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); void clear_prefree_segments(struct f2fs_sb_info *sbi, struct cp_control *cpc);

7
fs/f2fs/file.c
View File

@ -1866,6 +1866,13 @@ static int f2fs_ioc_shutdown(struct file *filp, unsigned long arg)
ret = -EINVAL; ret = -EINVAL;
goto out; goto out;
} }
stop_gc_thread(sbi);
stop_discard_thread(sbi);
drop_discard_cmd(sbi);
clear_opt(sbi, DISCARD);
f2fs_update_time(sbi, REQ_TIME); f2fs_update_time(sbi, REQ_TIME);
out: out:
mnt_drop_write_file(filp); mnt_drop_write_file(filp);

5
fs/f2fs/segment.c
View File

@ -1263,6 +1263,11 @@ static bool __drop_discard_cmd(struct f2fs_sb_info *sbi)
return dropped; 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, static unsigned int __wait_one_discard_bio(struct f2fs_sb_info *sbi,
struct discard_cmd *dc) struct discard_cmd *dc)
{ {