ext4: Remove unnecessary wait_event ext4_run_lazyinit_thread()

For some reason we have been waiting for lazyinit thread to start in the
ext4_run_lazyinit_thread() but it is not needed since it was jus
unnecessary complexity, so get rid of it. We can also remove li_task and
li_wait_task since it is not used anymore.

Signed-off-by: Lukas Czerner <lczerner@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Reviewed-by: Eric Sandeen <sandeen@redhat.com>

2 files changed, 0 insertions, 12 deletions

diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 579dfeda614c..6ce3c7c8574c 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -1605,8 +1605,6 @@ void ext4_get_group_no_and_offset(struct super_block *sb, ext4_fsblk_t blocknr,
  */
 struct ext4_lazy_init {
         unsigned long           li_state;
-        wait_queue_head_t       li_wait_task;
-        struct task_struct      *li_task;
         struct list_head        li_request_list;
         struct mutex            li_list_mtx;
 };
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 6a40ec1aabf6..d7756bd2dc12 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -2768,9 +2768,6 @@ static int ext4_lazyinit_thread(void *arg)
 
         BUG_ON(NULL == eli);
 
-        eli->li_task = current;
-        wake_up(&eli->li_wait_task);
-
 cont_thread:
         while (true) {
                 next_wakeup = MAX_JIFFY_OFFSET;
@@ -2833,9 +2830,6 @@ exit_thread:
                 goto cont_thread;
         }
         mutex_unlock(&eli->li_list_mtx);
-        eli->li_task = NULL;
-        wake_up(&eli->li_wait_task);
-
         kfree(ext4_li_info);
         ext4_li_info = NULL;
         mutex_unlock(&ext4_li_mtx);
@@ -2872,8 +2866,6 @@ static int ext4_run_lazyinit_thread(void)
                 return err;
         }
         ext4_li_info->li_state |= EXT4_LAZYINIT_RUNNING;
-
-        wait_event(ext4_li_info->li_wait_task, ext4_li_info->li_task != NULL);
         return 0;
 }
 
@@ -2908,11 +2900,9 @@ static int ext4_li_info_new(void)
         if (!eli)
                 return -ENOMEM;
 
-        eli->li_task = NULL;
         INIT_LIST_HEAD(&eli->li_request_list);
         mutex_init(&eli->li_list_mtx);
 
-        init_waitqueue_head(&eli->li_wait_task);
         eli->li_state |= EXT4_LAZYINIT_QUIT;
 
         ext4_li_info = eli;