[SCM] GNU Mach branch, master, updated. v1.8-411-gdf10aa69

[Samuel Thibault]

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commit df10aa6983e86b688e4a9b4f30db6d07ad540964
Author: Samuel Thibault <samuel.thibault@ens-lyon.org>
Date:   Sun Nov 27 22:10:10 2022 +0100

    vm_wire_all: Fix vm_map_protect case
    
    If a "wire_required" process calls vm_map_protect(0), the
    memory gets unwired as expected. But if the process then calls
    vm_map_protect(VM_PROT_READ) again, we need to wire that memory.
    
    (This happens to be exactly what glibc does for its heap)
    
    This fixes Hurd hangs on lack of memory, during which mach was swapping
    pieces of mach-defpager out.

-----------------------------------------------------------------------

Summary of changes:
 vm/vm_map.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)


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