There are controlled by f2fs_freeze().
This fixes xfstests/generic/068 which is stuck at
task:f2fs_ckpt-252:3 state:D stack: 0 pid: 5761 ppid: 2 flags:0x00004000
Call Trace:
__schedule+0x44c/0x8a0
schedule+0x4f/0xc0
percpu_rwsem_wait+0xd8/0x140
? percpu_down_write+0xf0/0xf0
__percpu_down_read+0x56/0x70
issue_checkpoint_thread+0x12c/0x160 [f2fs]
? wait_woken+0x80/0x80
kthread+0x114/0x150
? __checkpoint_and_complete_reqs+0x110/0x110 [f2fs]
? kthread_park+0x90/0x90
ret_from_fork+0x22/0x30
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
if (kthread_should_stop())
return 0;
- sb_start_intwrite(sbi->sb);
-
if (!llist_empty(&cprc->issue_list))
__checkpoint_and_complete_reqs(sbi);
- sb_end_intwrite(sbi->sb);
-
wait_event_interruptible(*q,
kthread_should_stop() || !llist_empty(&cprc->issue_list));
goto repeat;
if (kthread_should_stop())
return 0;
- sb_start_intwrite(sbi->sb);
-
if (!llist_empty(&fcc->issue_list)) {
struct flush_cmd *cmd, *next;
int ret;
fcc->dispatch_list = NULL;
}
- sb_end_intwrite(sbi->sb);
-
wait_event_interruptible(*q,
kthread_should_stop() || !llist_empty(&fcc->issue_list));
goto repeat;
/* must be clean, since sync_filesystem() was already called */
if (is_sbi_flag_set(F2FS_SB(sb), SBI_IS_DIRTY))
return -EINVAL;
+
+ /* ensure no checkpoint required */
+ if (!llist_empty(&F2FS_SB(sb)->cprc_info.issue_list))
+ return -EINVAL;
return 0;
}