f2fs: enable flush_merge only in f2fs is not read-only
Enable flush_merge only in f2fs is not read-only, so does the mount
option show.
Signed-off-by: Gu Zheng <[email protected]>
Signed-off-by: Jaegeuk Kim <[email protected]>
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index ba067b1..1e264e7 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -1859,10 +1859,9 @@
sm_info->nr_discards = 0;
sm_info->max_discards = 0;
- if (test_opt(sbi, FLUSH_MERGE)) {
+ if (test_opt(sbi, FLUSH_MERGE) && !f2fs_readonly(sbi->sb)) {
spin_lock_init(&sm_info->issue_lock);
init_waitqueue_head(&sm_info->flush_wait_queue);
-
sm_info->f2fs_issue_flush = kthread_run(issue_flush_thread, sbi,
"f2fs_flush-%u:%u", MAJOR(dev), MINOR(dev));
if (IS_ERR(sm_info->f2fs_issue_flush))
