linux-kernel - [PATCH 0/6] mremap: move

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Date:   Tue, 13 Oct 2020 02:34:10 +0100
From:   Dmitry Safonov <dima@...sta.com>
To:     linux-kernel@...r.kernel.org
Cc:     Dmitry Safonov <0x7f454c46@...il.com>,
        Dmitry Safonov <dima@...sta.com>,
        Alexander Viro <viro@...iv.linux.org.uk>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Andy Lutomirski <luto@...nel.org>,
        Brian Geffon <bgeffon@...gle.com>,
        Catalin Marinas <catalin.marinas@....com>,
        Dan Williams <dan.j.williams@...el.com>,
        Dave Jiang <dave.jiang@...el.com>,
        Hugh Dickins <hughd@...gle.com>,
        Ingo Molnar <mingo@...hat.com>,
        "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
        Mike Kravetz <mike.kravetz@...cle.com>,
        Minchan Kim <minchan@...nel.org>,
        Russell King <linux@...linux.org.uk>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        Thomas Gleixner <tglx@...utronix.de>,
        Vishal Verma <vishal.l.verma@...el.com>,
        Vlastimil Babka <vbabka@...e.cz>,
        Will Deacon <will@...nel.org>, linux-aio@...ck.org,
        linux-fsdevel@...r.kernel.org, linux-mm@...ck.org
Subject: [PATCH 0/6] mremap: move_vma() fixes

1 - seems to be historical issue on a rarely taken path
2,3 - fixes related to the new mremap() flag
5 - dax device/hugetlbfs possible issue

4,6 - refactoring

As those seems to be actual issues, sending this during the merge-window.

(Changes to architecture code are in the 6 patch, but Cc'ing
maintainers on cover for the context, I hope it's fine).

Cc: Alexander Viro <viro@...iv.linux.org.uk>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: Andy Lutomirski <luto@...nel.org>
Cc: Brian Geffon <bgeffon@...gle.com>
Cc: Catalin Marinas <catalin.marinas@....com>
Cc: Dan Williams <dan.j.williams@...el.com>
Cc: Dave Jiang <dave.jiang@...el.com>
Cc: Hugh Dickins <hughd@...gle.com>
Cc: Ingo Molnar <mingo@...hat.com>
Cc: Kirill A. Shutemov <kirill.shutemov@...ux.intel.com>
Cc: Mike Kravetz <mike.kravetz@...cle.com>
Cc: Minchan Kim <minchan@...nel.org>
Cc: Russell King <linux@...linux.org.uk>
Cc: Thomas Bogendoerfer <tsbogend@...ha.franken.de>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Vishal Verma <vishal.l.verma@...el.com>
Cc: Vlastimil Babka <vbabka@...e.cz>
Cc: Will Deacon <will@...nel.org>

Cc: linux-aio@...ck.org
Cc: linux-fsdevel@...r.kernel.org
Cc: linux-mm@...ck.org

Dmitry Safonov (6):
  mm/mremap: Account memory on do_munmap() failure
  mm/mremap: For MREMAP_DONTUNMAP check security_vm_enough_memory_mm()
  mremap: Don't allow MREMAP_DONTUNMAP on special_mappings and aio
  vm_ops: Rename .split() callback to .may_split()
  mremap: Check if it's possible to split original vma
  mm: Forbid splitting special mappings

 arch/arm/kernel/vdso.c                    |  9 ----
 arch/arm64/kernel/vdso.c                  | 41 ++-----------------
 arch/mips/vdso/genvdso.c                  |  4 --
 arch/s390/kernel/vdso.c                   | 11 +----
 arch/x86/entry/vdso/vma.c                 | 17 --------
 arch/x86/kernel/cpu/resctrl/pseudo_lock.c |  2 +-
 drivers/dax/device.c                      |  4 +-
 fs/aio.c                                  |  5 ++-
 include/linux/mm.h                        |  5 ++-
 ipc/shm.c                                 |  8 ++--
 mm/hugetlb.c                              |  2 +-
 mm/mmap.c                                 | 22 ++++++++--
 mm/mremap.c                               | 50 +++++++++++------------
 13 files changed, 63 insertions(+), 117 deletions(-)


base-commit: bbf5c979011a099af5dc76498918ed7df445635b
-- 
2.28.0