+ fs-proc-task_mmu-add-display-flag-for-vm_mayoverlay.patch added to mm-hotfixes-unstable branch

+ fs-proc-task_mmu-add-display-flag-for-vm_mayoverlay.patch added to mm-hotfixes-unstable branch

[Andrew Morton]

The patch titled
     Subject: fs/proc/task_mmu: add display flag for VM_MAYOVERLAY
has been added to the -mm mm-hotfixes-unstable branch.  Its filename is
     fs-proc-task_mmu-add-display-flag-for-vm_mayoverlay.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/fs-proc-task_mmu-add-display-flag-for-vm_mayoverlay.patch

This patch will later appear in the mm-hotfixes-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

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------------------------------------------------------
From: Anshuman Khandual <anshuman.khandual@arm.com>
Subject: fs/proc/task_mmu: add display flag for VM_MAYOVERLAY
Date: Thu, 8 Feb 2024 14:18:05 +0530

VM_UFFD_MISSING flag is mutually exclussive with VM_MAYOVERLAY flag as
they both use the same bit position i.e 0x00000200 in the vm_flags.  Let's
update show_smap_vma_flags() to display the correct flags depending on
CONFIG_MMU.

Link: https://lkml.kernel.org/r/20240208084805.1252337-1-anshuman.khandual@arm.com
Fixes: b6b7a8faf05c ("mm/nommu: don't use VM_MAYSHARE for MAP_PRIVATE mappings")
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 fs/proc/task_mmu.c |    4 ++++
 1 file changed, 4 insertions(+)

--- a/fs/proc/task_mmu.c~fs-proc-task_mmu-add-display-flag-for-vm_mayoverlay
+++ a/fs/proc/task_mmu.c
@@ -681,7 +681,11 @@ static void show_smap_vma_flags(struct s
 		[ilog2(VM_HUGEPAGE)]	= "hg",
 		[ilog2(VM_NOHUGEPAGE)]	= "nh",
 		[ilog2(VM_MERGEABLE)]	= "mg",
+#ifdef CONFIG_MMU
 		[ilog2(VM_UFFD_MISSING)]= "um",
+#else
+		[ilog2(VM_MAYOVERLAY)]	= "ov",
+#endif /* CONFIG_MMU */
 		[ilog2(VM_UFFD_WP)]	= "uw",
 #ifdef CONFIG_ARM64_MTE
 		[ilog2(VM_MTE)]		= "mt",
_

Patches currently in -mm which might be from anshuman.khandual@arm.com are

fs-proc-task_mmu-add-display-flag-for-vm_mayoverlay.patch
mm-cma-dont-treat-bad-input-arguments-for-cma_alloc-as-its-failure.patch
mm-cma-drop-config_cma_debug.patch
mm-cma-make-max_cma_areas-=-config_cma_areas.patch
mm-cma-add-sysfs-file-release_pages_success.patch