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: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 854ee54..517d21d 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -2764,6 +2764,7 @@
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);
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 40300d0..dec2477 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -1838,6 +1838,13 @@
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);
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index aabc1c5..c867e8d 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -1263,6 +1263,11 @@
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)
{