3 files changed, 49 insertions, 2 deletions
diff --git a/ext2fs/ext2fs.c b/ext2fs/ext2fs.c
index d0fdfe7a..03c9eedc 100644
--- a/ext2fs/ext2fs.c
+++ b/ext2fs/ext2fs.c
@@ -207,10 +207,20 @@ main (int argc, char **argv)
 error_t
 diskfs_reload_global_state ()
 {
+  error_t err;
+
   pokel_flush (&global_pokel);
   pager_flush (diskfs_disk_pager, 1);
-  sblock = NULL;
+
+  /* libdiskfs is not responsible for inhibiting paging.  */
+  err = inhibit_ext2_pager ();
+  if (err)
+    return err;
+
   get_hypermetadata ();
   map_hypermetadata ();
+
+  resume_ext2_pager ();
+
   return 0;
 }
diff --git a/ext2fs/ext2fs.h b/ext2fs/ext2fs.h
index 72b7b09d..42717c52 100644
--- a/ext2fs/ext2fs.h
+++ b/ext2fs/ext2fs.h
@@ -202,6 +202,12 @@ struct user_pager_info
 /* Set up the disk pager.  */
 void create_disk_pager (void);
 
+/* Inhibit the disk pager.  */
+error_t inhibit_ext2_pager (void);
+
+/* Resume the disk pager.  */
+void resume_ext2_pager (void);
+
 /* Call this when we should turn off caching so that unused memory object
    ports get freed.  */
 void drop_pager_softrefs (struct node *node);
diff --git a/ext2fs/pager.c b/ext2fs/pager.c
index b56c923a..3e080f87 100644
--- a/ext2fs/pager.c
+++ b/ext2fs/pager.c
@@ -34,6 +34,10 @@ struct port_bucket *disk_pager_bucket;
 /* A ports bucket to hold file pager ports.  */
 struct port_bucket *file_pager_bucket;
 
+/* Stores a reference to the requests instance used by the file pager so its
+   worker threads can be inhibited and resumed.  */
+struct pager_requests *file_pager_requests;
+
 pthread_spinlock_t node_to_page_lock = PTHREAD_SPINLOCK_INITIALIZER;
 
 
@@ -1217,11 +1221,38 @@ create_disk_pager (void)
   file_pager_bucket = ports_create_bucket ();
 
   /* Start libpagers worker threads.  */
-  err = pager_start_workers (file_pager_bucket);
+  err = pager_start_workers (file_pager_bucket, &file_pager_requests);
   if (err)
     ext2_panic ("can't create libpager worker threads: %s", strerror (err));
 }
 
+error_t
+inhibit_ext2_pager (void)
+{
+  error_t err;
+
+  /* The file pager can rely on the disk pager, so inhibit the file
+     pager first.  */
+
+  err = pager_inhibit_workers (file_pager_requests);
+  if (err)
+    return err;
+
+  err = pager_inhibit_workers (diskfs_disk_pager_requests);
+  /* We don't want only one pager disabled.  */
+  if (err)
+    pager_resume_workers (file_pager_requests);
+
+  return err;
+}
+
+void
+resume_ext2_pager (void)
+{
+  pager_resume_workers (diskfs_disk_pager_requests);
+  pager_resume_workers (file_pager_requests);
+}
+
 /* Call this to create a FILE_DATA pager and return a send right.
    NODE must be locked.  */
 mach_port_t