From 546d089ad639440bab342c29997e910bf9655290 Mon Sep 17 00:00:00 2001
From: Samuel Thibault <samuel.thibault@ens-lyon.org>
Date: Mon, 5 Nov 2018 23:08:42 +0100
Subject: tmpfs: Document issue with removed shm files

---
 tmpfs/node.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'tmpfs/node.c')

diff --git a/tmpfs/node.c b/tmpfs/node.c
index e93b8794..c606f94e 100644
--- a/tmpfs/node.c
+++ b/tmpfs/node.c
@@ -73,6 +73,8 @@ diskfs_free_node (struct node *np, mode_t mode)
     {
     case DT_REG:
       if (np->dn->u.reg.memobj != MACH_PORT_NULL) {
+	/* XXX GNU Mach will terminate the object, and thus existing mappings
+	 * will get SIGBUS.  */
 	vm_deallocate (mach_task_self (), np->dn->u.reg.memref, 4096);
 	mach_port_deallocate (mach_task_self (), np->dn->u.reg.memobj);
       }	
-- 
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