ext4: inline ext4_writepage() into mpage_da_submit_io()

[pandora-kernel.git] / fs / pnode.c

diff --git a/fs/pnode.c b/fs/pnode.c
index 5cc564a..8066b8d 100644 (file)
--- a/fs/pnode.c
+++ b/fs/pnode.c
@@ -126,6 +126,9 @@ static int do_make_slave(struct vfsmount *mnt)
        return 0;
 }
 
+/*
+ * vfsmount lock must be held for write
+ */
 void change_mnt_propagation(struct vfsmount *mnt, int type)
 {
        if (type == MS_SHARED) {
@@ -270,12 +273,12 @@ int propagate_mnt(struct vfsmount *dest_mnt, struct dentry *dest_dentry,
                prev_src_mnt  = child;
        }
 out:
-       spin_lock(&vfsmount_lock);
+       br_write_lock(vfsmount_lock);
        while (!list_empty(&tmp_list)) {
                child = list_first_entry(&tmp_list, struct vfsmount, mnt_hash);
                umount_tree(child, 0, &umount_list);
        }
-       spin_unlock(&vfsmount_lock);
+       br_write_unlock(vfsmount_lock);
        release_mounts(&umount_list);
        return ret;
 }
@@ -296,6 +299,8 @@ static inline int do_refcount_check(struct vfsmount *mnt, int count)
  * other mounts its parent propagates to.
  * Check if any of these mounts that **do not have submounts**
  * have more references than 'refcnt'. If so return busy.
+ *
+ * vfsmount lock must be held for read or write
  */
 int propagate_mount_busy(struct vfsmount *mnt, int refcnt)
 {
@@ -353,6 +358,8 @@ static void __propagate_umount(struct vfsmount *mnt)
  * collect all mounts that receive propagation from the mount in @list,
  * and return these additional mounts in the same list.
  * @list: the list of mounts to be unmounted.
+ *
+ * vfsmount lock must be held for write
  */
 int propagate_umount(struct list_head *list)
 {