fs: dentry use seqlock

Replace the open coded seqlock with a real seqlock, so RT can handle
it.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: stable-rt@vger.kernel.org

2 files changed, 16 insertions, 16 deletions

diff --git a/fs/notify/fsnotify.c b/fs/notify/fsnotify.c
index 79b47cbb5cd8..f3c5bd557a8a 100644
--- a/fs/notify/fsnotify.c
+++ b/fs/notify/fsnotify.c
@@ -68,19 +68,19 @@ void __fsnotify_update_child_dentry_flags(struct inode *inode)
 		/* run all of the children of the original inode and fix their
 		 * d_flags to indicate parental interest (their parent is the
 		 * original inode) */
-		spin_lock(&alias->d_lock);
+		seq_spin_lock(&alias->d_lock);
 		list_for_each_entry(child, &alias->d_subdirs, d_u.d_child) {
 			if (!child->d_inode)
 				continue;
 
-			spin_lock_nested(&child->d_lock, DENTRY_D_LOCK_NESTED);
+			seq_spin_lock_nested(&child->d_lock, DENTRY_D_LOCK_NESTED);
 			if (watched)
 				child->d_flags |= DCACHE_FSNOTIFY_PARENT_WATCHED;
 			else
 				child->d_flags &= ~DCACHE_FSNOTIFY_PARENT_WATCHED;
-			spin_unlock(&child->d_lock);
+			seq_spin_unlock(&child->d_lock);
 		}
-		spin_unlock(&alias->d_lock);
+		seq_spin_unlock(&alias->d_lock);
 	}
 	spin_unlock(&inode->i_lock);
 }
diff --git a/fs/notify/vfsmount_mark.c b/fs/notify/vfsmount_mark.c
index 778fe6cae3b0..539dc1cdc91f 100644
--- a/fs/notify/vfsmount_mark.c
+++ b/fs/notify/vfsmount_mark.c
@@ -35,13 +35,13 @@ void fsnotify_clear_marks_by_mount(struct vfsmount *mnt)
 	struct hlist_node *pos, *n;
 	LIST_HEAD(free_list);
 
-	spin_lock(&mnt->mnt_root->d_lock);
+	seq_spin_lock(&mnt->mnt_root->d_lock);
 	hlist_for_each_entry_safe(mark, pos, n, &mnt->mnt_fsnotify_marks, m.m_list) {
 		list_add(&mark->m.free_m_list, &free_list);
 		hlist_del_init_rcu(&mark->m.m_list);
 		fsnotify_get_mark(mark);
 	}
-	spin_unlock(&mnt->mnt_root->d_lock);
+	seq_spin_unlock(&mnt->mnt_root->d_lock);
 
 	list_for_each_entry_safe(mark, lmark, &free_list, m.free_m_list) {
 		fsnotify_destroy_mark(mark);
@@ -63,7 +63,7 @@ static void fsnotify_recalc_vfsmount_mask_locked(struct vfsmount *mnt)
 	struct hlist_node *pos;
 	__u32 new_mask = 0;
 
-	assert_spin_locked(&mnt->mnt_root->d_lock);
+	assert_seq_spin_locked(&mnt->mnt_root->d_lock);
 
 	hlist_for_each_entry(mark, pos, &mnt->mnt_fsnotify_marks, m.m_list)
 		new_mask |= mark->mask;
@@ -76,9 +76,9 @@ static void fsnotify_recalc_vfsmount_mask_locked(struct vfsmount *mnt)
  */
 void fsnotify_recalc_vfsmount_mask(struct vfsmount *mnt)
 {
-	spin_lock(&mnt->mnt_root->d_lock);
+	seq_spin_lock(&mnt->mnt_root->d_lock);
 	fsnotify_recalc_vfsmount_mask_locked(mnt);
-	spin_unlock(&mnt->mnt_root->d_lock);
+	seq_spin_unlock(&mnt->mnt_root->d_lock);
 }
 
 void fsnotify_destroy_vfsmount_mark(struct fsnotify_mark *mark)
@@ -88,14 +88,14 @@ void fsnotify_destroy_vfsmount_mark(struct fsnotify_mark *mark)
 	assert_spin_locked(&mark->lock);
 	assert_spin_locked(&mark->group->mark_lock);
 
-	spin_lock(&mnt->mnt_root->d_lock);
+	seq_spin_lock(&mnt->mnt_root->d_lock);
 
 	hlist_del_init_rcu(&mark->m.m_list);
 	mark->m.mnt = NULL;
 
 	fsnotify_recalc_vfsmount_mask_locked(mnt);
 
-	spin_unlock(&mnt->mnt_root->d_lock);
+	seq_spin_unlock(&mnt->mnt_root->d_lock);
 }
 
 static struct fsnotify_mark *fsnotify_find_vfsmount_mark_locked(struct fsnotify_group *group,
@@ -104,7 +104,7 @@ static struct fsnotify_mark *fsnotify_find_vfsmount_mark_locked(struct fsnotify_
 	struct fsnotify_mark *mark;
 	struct hlist_node *pos;
 
-	assert_spin_locked(&mnt->mnt_root->d_lock);
+	assert_seq_spin_locked(&mnt->mnt_root->d_lock);
 
 	hlist_for_each_entry(mark, pos, &mnt->mnt_fsnotify_marks, m.m_list) {
 		if (mark->group == group) {
@@ -124,9 +124,9 @@ struct fsnotify_mark *fsnotify_find_vfsmount_mark(struct fsnotify_group *group,
 {
 	struct fsnotify_mark *mark;
 
-	spin_lock(&mnt->mnt_root->d_lock);
+	seq_spin_lock(&mnt->mnt_root->d_lock);
 	mark = fsnotify_find_vfsmount_mark_locked(group, mnt);
-	spin_unlock(&mnt->mnt_root->d_lock);
+	seq_spin_unlock(&mnt->mnt_root->d_lock);
 
 	return mark;
 }
@@ -149,7 +149,7 @@ int fsnotify_add_vfsmount_mark(struct fsnotify_mark *mark,
 	assert_spin_locked(&mark->lock);
 	assert_spin_locked(&group->mark_lock);
 
-	spin_lock(&mnt->mnt_root->d_lock);
+	seq_spin_lock(&mnt->mnt_root->d_lock);
 
 	mark->m.mnt = mnt;
 
@@ -184,7 +184,7 @@ int fsnotify_add_vfsmount_mark(struct fsnotify_mark *mark,
 	hlist_add_after_rcu(last, &mark->m.m_list);
 out:
 	fsnotify_recalc_vfsmount_mask_locked(mnt);
-	spin_unlock(&mnt->mnt_root->d_lock);
+	seq_spin_unlock(&mnt->mnt_root->d_lock);
 
 	return ret;
 }