ext4: Use schedule_timeout_interruptible() for waiting in lazyinit thread

[linux-flexiantxendom0-natty.git] / fs / ext4 / super.c

diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index f3e1b18..9bada49 100644 (file)
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -2645,12 +2645,6 @@ static void print_daily_error_info(unsigned long arg)
        mod_timer(&sbi->s_err_report, jiffies + 24*60*60*HZ);  /* Once a day */
 }
 
-static void ext4_lazyinode_timeout(unsigned long data)
-{
-       struct task_struct *p = (struct task_struct *)data;
-       wake_up_process(p);
-}
-
 /* Find next suitable group and run ext4_init_inode_table */
 static int ext4_run_li_request(struct ext4_li_request *elr)
 {
@@ -2698,7 +2692,7 @@ static int ext4_run_li_request(struct ext4_li_request *elr)
 
 /*
  * Remove lr_request from the list_request and free the
- * request tructure. Should be called with li_list_mtx held
+ * request structure. Should be called with li_list_mtx held
  */
 static void ext4_remove_li_request(struct ext4_li_request *elr)
 {
@@ -2744,14 +2738,10 @@ static int ext4_lazyinit_thread(void *arg)
        struct ext4_lazy_init *eli = (struct ext4_lazy_init *)arg;
        struct list_head *pos, *n;
        struct ext4_li_request *elr;
-       unsigned long next_wakeup;
-       DEFINE_WAIT(wait);
+       unsigned long next_wakeup, cur;
 
        BUG_ON(NULL == eli);
 
-       eli->li_timer.data = (unsigned long)current;
-       eli->li_timer.function = ext4_lazyinode_timeout;
-
        eli->li_task = current;
        wake_up(&eli->li_wait_task);
 
@@ -2785,19 +2775,15 @@ cont_thread:
                if (freezing(current))
                        refrigerator();
 
-               if ((time_after_eq(jiffies, next_wakeup)) ||
+               cur = jiffies;
+               if ((time_after_eq(cur, next_wakeup)) ||
                    (MAX_JIFFY_OFFSET == next_wakeup)) {
                        cond_resched();
                        continue;
                }
 
-               eli->li_timer.expires = next_wakeup;
-               add_timer(&eli->li_timer);
-               prepare_to_wait(&eli->li_wait_daemon, &wait,
-                               TASK_INTERRUPTIBLE);
-               if (time_before(jiffies, next_wakeup))
-                       schedule();
-               finish_wait(&eli->li_wait_daemon, &wait);
+               schedule_timeout_interruptible(next_wakeup - cur);
+
                if (kthread_should_stop()) {
                        ext4_clear_request_list();
                        goto exit_thread;
@@ -2821,12 +2807,10 @@ exit_thread:
                goto cont_thread;
        }
        mutex_unlock(&eli->li_list_mtx);
-       del_timer_sync(&ext4_li_info->li_timer);
        eli->li_task = NULL;
        wake_up(&eli->li_wait_task);
 
        kfree(ext4_li_info);
-       ext4_lazyinit_task = NULL;
        ext4_li_info = NULL;
        mutex_unlock(&ext4_li_mtx);
 
@@ -2854,7 +2838,6 @@ static int ext4_run_lazyinit_thread(void)
        if (IS_ERR(ext4_lazyinit_task)) {
                int err = PTR_ERR(ext4_lazyinit_task);
                ext4_clear_request_list();
-               del_timer_sync(&ext4_li_info->li_timer);
                kfree(ext4_li_info);
                ext4_li_info = NULL;
                printk(KERN_CRIT "EXT4: error %d creating inode table "
@@ -2903,9 +2886,7 @@ static int ext4_li_info_new(void)
        INIT_LIST_HEAD(&eli->li_request_list);
        mutex_init(&eli->li_list_mtx);
 
-       init_waitqueue_head(&eli->li_wait_daemon);
        init_waitqueue_head(&eli->li_wait_task);
-       init_timer(&eli->li_timer);
        eli->li_state |= EXT4_LAZYINIT_QUIT;
 
        ext4_li_info = eli;