diff options
| author | Chao Yu <yuchao0@huawei.com> | 2017-06-29 23:17:45 +0800 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2017-07-07 10:34:42 -0700 |
| commit | cce1325247b9faafc520c5789fe60feef1fd7092 (patch) | |
| tree | b4b722ce5c23bb52fb36b9f9a291dc1314ea64e7 /fs/f2fs/segment.c | |
| parent | daeb433e42de97c79622f58681972200eec1d8da (diff) | |
f2fs: stop gc/discard thread in prior during umount
This patch resolves kernel panic for xfstests/081, caused by recent f2fs_bug_on
f2fs: add f2fs_bug_on in __remove_discard_cmd
For fixing, we will stop gc/discard thread in prior in ->kill_sb in order to
avoid referring and releasing race among them.
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/segment.c')
| -rw-r--r-- | fs/f2fs/segment.c | 19 |
1 files changed, 13 insertions, 6 deletions
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c index 7637033ef87b..6eaa98ea8ec6 100644 --- a/fs/f2fs/segment.c +++ b/fs/f2fs/segment.c @@ -1065,6 +1065,18 @@ void f2fs_wait_discard_bio(struct f2fs_sb_info *sbi, block_t blkaddr) __wait_one_discard_bio(sbi, dc); } +void stop_discard_thread(struct f2fs_sb_info *sbi) +{ + struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; + + if (dcc && dcc->f2fs_issue_discard) { + struct task_struct *discard_thread = dcc->f2fs_issue_discard; + + dcc->f2fs_issue_discard = NULL; + kthread_stop(discard_thread); + } +} + /* This comes from f2fs_put_super */ void f2fs_wait_discard_bios(struct f2fs_sb_info *sbi) { @@ -1422,12 +1434,7 @@ static void destroy_discard_cmd_control(struct f2fs_sb_info *sbi) if (!dcc) return; - if (dcc->f2fs_issue_discard) { - struct task_struct *discard_thread = dcc->f2fs_issue_discard; - - dcc->f2fs_issue_discard = NULL; - kthread_stop(discard_thread); - } + stop_discard_thread(sbi); kfree(dcc); SM_I(sbi)->dcc_info = NULL; |