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Message-Id: <20240208084805.1252337-1-anshuman.khandual@arm.com>
Date: Thu, 8 Feb 2024 14:18:05 +0530
From: Anshuman Khandual <anshuman.khandual@....com>
To: linux-mm@...ck.org
Cc: Anshuman Khandual <anshuman.khandual@....com>,
Andrew Morton <akpm@...ux-foundation.org>,
David Hildenbrand <david@...hat.com>,
linux-kernel@...r.kernel.org,
linux-fsdevel@...r.kernel.org
Subject: [PATCH] fs/proc/task_mmu: Add display flag for VM_MAYOVERLAY
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.
Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: David Hildenbrand <david@...hat.com>
Cc: linux-kernel@...r.kernel.org
Cc: linux-fsdevel@...r.kernel.org
Signed-off-by: Anshuman Khandual <anshuman.khandual@....com>
---
This applies on v6.8-rc3
fs/proc/task_mmu.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index 3f78ebbb795f..1c4eb25cfc17 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -681,7 +681,11 @@ static void show_smap_vma_flags(struct seq_file *m, struct vm_area_struct *vma)
[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",
--
2.25.1
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