Linux-libre 4.5-gnu

3 files changed, 19 insertions, 41 deletions

diff --git a/fs/notify/group.c b/fs/notify/group.c
index 53e45b61d..d16b62cb2 100644
--- a/fs/notify/group.c
+++ b/fs/notify/group.c
@@ -22,7 +22,6 @@
 #include <linux/srcu.h>
 #include <linux/rculist.h>
 #include <linux/wait.h>
-#include <linux/module.h>
 
 #include <linux/fsnotify_backend.h>
 #include "fsnotify.h"
@@ -73,7 +72,6 @@ void fsnotify_get_group(struct fsnotify_group *group)
 {
 	atomic_inc(&group->refcnt);
 }
-EXPORT_SYMBOL_GPL(fsnotify_get_group);
 
 /*
  * Drop a reference to a group.  Free it if it's through.
@@ -83,7 +81,6 @@ void fsnotify_put_group(struct fsnotify_group *group)
 	if (atomic_dec_and_test(&group->refcnt))
 		fsnotify_final_destroy_group(group);
 }
-EXPORT_SYMBOL_GPL(fsnotify_put_group);
 
 /*
  * Create a new fsnotify_group and hold a reference for the group returned.
@@ -112,7 +109,6 @@ struct fsnotify_group *fsnotify_alloc_group(const struct fsnotify_ops *ops)
 
 	return group;
 }
-EXPORT_SYMBOL_GPL(fsnotify_alloc_group);
 
 int fsnotify_fasync(int fd, struct file *file, int on)
 {
diff --git a/fs/notify/inode_mark.c b/fs/notify/inode_mark.c
index e785fd954..741077dee 100644
--- a/fs/notify/inode_mark.c
+++ b/fs/notify/inode_mark.c
@@ -199,8 +199,7 @@ void fsnotify_unmount_inodes(struct super_block *sb)
 				break;
 			}
 			spin_unlock(&next_i->i_lock);
-			next_i = list_entry(next_i->i_sb_list.next,
-						struct inode, i_sb_list);
+			next_i = list_next_entry(next_i, i_sb_list);
 		}
 
 		/*
diff --git a/fs/notify/mark.c b/fs/notify/mark.c
index 8175f3cd4..7115c5d7d 100644
--- a/fs/notify/mark.c
+++ b/fs/notify/mark.c
@@ -91,10 +91,14 @@
 #include <linux/fsnotify_backend.h>
 #include "fsnotify.h"
 
+#define FSNOTIFY_REAPER_DELAY	(1)	/* 1 jiffy */
+
 struct srcu_struct fsnotify_mark_srcu;
 static DEFINE_SPINLOCK(destroy_lock);
 static LIST_HEAD(destroy_list);
-static DECLARE_WAIT_QUEUE_HEAD(destroy_waitq);
+
+static void fsnotify_mark_destroy(struct work_struct *work);
+static DECLARE_DELAYED_WORK(reaper_work, fsnotify_mark_destroy);
 
 void fsnotify_get_mark(struct fsnotify_mark *mark)
 {
@@ -109,7 +113,6 @@ void fsnotify_put_mark(struct fsnotify_mark *mark)
 		mark->free_mark(mark);
 	}
 }
-EXPORT_SYMBOL_GPL(fsnotify_put_mark);
 
 /* Calculate mask of events for a list of marks */
 u32 fsnotify_recalc_mask(struct hlist_head *head)
@@ -190,7 +193,8 @@ void fsnotify_free_mark(struct fsnotify_mark *mark)
 	spin_lock(&destroy_lock);
 	list_add(&mark->g_list, &destroy_list);
 	spin_unlock(&destroy_lock);
-	wake_up(&destroy_waitq);
+	queue_delayed_work(system_unbound_wq, &reaper_work,
+				FSNOTIFY_REAPER_DELAY);
 
 	/*
 	 * Some groups like to know that marks are being freed.  This is a
@@ -209,7 +213,6 @@ void fsnotify_destroy_mark(struct fsnotify_mark *mark,
 	mutex_unlock(&group->mark_mutex);
 	fsnotify_free_mark(mark);
 }
-EXPORT_SYMBOL_GPL(fsnotify_destroy_mark);
 
 void fsnotify_destroy_marks(struct hlist_head *head, spinlock_t *lock)
 {
@@ -390,11 +393,11 @@ err:
 	spin_lock(&destroy_lock);
 	list_add(&mark->g_list, &destroy_list);
 	spin_unlock(&destroy_lock);
-	wake_up(&destroy_waitq);
+	queue_delayed_work(system_unbound_wq, &reaper_work,
+				FSNOTIFY_REAPER_DELAY);
 
 	return ret;
 }
-EXPORT_SYMBOL_GPL(fsnotify_add_mark);
 
 int fsnotify_add_mark(struct fsnotify_mark *mark, struct fsnotify_group *group,
 		      struct inode *inode, struct vfsmount *mnt, int allow_dups)
@@ -495,41 +498,21 @@ void fsnotify_init_mark(struct fsnotify_mark *mark,
 	atomic_set(&mark->refcnt, 1);
 	mark->free_mark = free_mark;
 }
-EXPORT_SYMBOL_GPL(fsnotify_init_mark);
 
-static int fsnotify_mark_destroy(void *ignored)
+static void fsnotify_mark_destroy(struct work_struct *work)
 {
 	struct fsnotify_mark *mark, *next;
 	struct list_head private_destroy_list;
 
-	for (;;) {
-		spin_lock(&destroy_lock);
-		/* exchange the list head */
-		list_replace_init(&destroy_list, &private_destroy_list);
-		spin_unlock(&destroy_lock);
-
-		synchronize_srcu(&fsnotify_mark_srcu);
+	spin_lock(&destroy_lock);
+	/* exchange the list head */
+	list_replace_init(&destroy_list, &private_destroy_list);
+	spin_unlock(&destroy_lock);
 
-		list_for_each_entry_safe(mark, next, &private_destroy_list, g_list) {
-			list_del_init(&mark->g_list);
-			fsnotify_put_mark(mark);
-		}
+	synchronize_srcu(&fsnotify_mark_srcu);
 
-		wait_event_interruptible(destroy_waitq, !list_empty(&destroy_list));
+	list_for_each_entry_safe(mark, next, &private_destroy_list, g_list) {
+		list_del_init(&mark->g_list);
+		fsnotify_put_mark(mark);
 	}
-
-	return 0;
-}
-
-static int __init fsnotify_mark_init(void)
-{
-	struct task_struct *thread;
-
-	thread = kthread_run(fsnotify_mark_destroy, NULL,
-			     "fsnotify_mark");
-	if (IS_ERR(thread))
-		panic("unable to start fsnotify mark destruction thread.");
-
-	return 0;
 }
-device_initcall(fsnotify_mark_init);