[SCM] GNU Mach branch, master, updated. v1.8-799-g1ca3a6d9

[Samuel Thibault]

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The branch, master has been updated
       via  1ca3a6d9aa0d287df4e375f8798536901474dabd (commit)
       via  87e8ddc7adac201aebe932b2d6f45b36c79849dd (commit)
      from  1754dce141db6f79dbdc4f616f9d85204758b3fb (commit)

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- Log -----------------------------------------------------------------
commit 1ca3a6d9aa0d287df4e375f8798536901474dabd
Author: Sergey Bugaev <bugaevc@gmail.com>
Date:   Wed Jul 5 17:16:39 2023 +0300

    vm: Coalesce map entries
    
    When
    - extending an existing entry,
    - changing protection or inheritance of a range of entries,
    we can get several entries that could be coalesced. Attempt to do that.
    Message-ID: <20230705141639.85792-4-bugaevc@gmail.com>

commit 87e8ddc7adac201aebe932b2d6f45b36c79849dd
Author: Sergey Bugaev <bugaevc@gmail.com>
Date:   Wed Jul 5 17:16:38 2023 +0300

    vm: Add vm_map_coalesce_entry
    
    This function attempts to coalesce a VM map entry with its preceeding
    entry. It wraps vm_object_coalesce.
    Message-ID: <20230705141639.85792-3-bugaevc@gmail.com>

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

Summary of changes:
 vm/vm_map.c | 107 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++---
 vm/vm_map.h |   2 ++
 2 files changed, 105 insertions(+), 4 deletions(-)


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