The patch titled
Subject: hugetlbfs: add MTE support
has been added to the -mm mm-unstable branch. Its filename is
hugetlbfs-add-mte-support.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/hugetlbfs-add-mte-support.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Yang Shi <yang@xxxxxxxxxxxxxxxxxxxxxx>
Subject: hugetlbfs: add MTE support
Date: Tue, 25 Jun 2024 16:37:17 -0700
MTE can be supported on ram based filesystem. It is supported on tmpfs.
There is use case to use MTE on hugetlbfs as well, adding MTE support.
Link: https://lkml.kernel.org/r/20240625233717.2769975-1-yang@xxxxxxxxxxxxxxxxxxxxxx
Signed-off-by: Yang Shi <yang@xxxxxxxxxxxxxxxxxxxxxx>
Cc: Catalin Marinas <catalin.marinas@xxxxxxx>
Cc: Muchun Song <muchun.song@xxxxxxxxx>
Cc: Will Deacon <will@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/hugetlbfs/inode.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/fs/hugetlbfs/inode.c~hugetlbfs-add-mte-support
+++ a/fs/hugetlbfs/inode.c
@@ -110,7 +110,7 @@ static int hugetlbfs_file_mmap(struct fi
* way when do_mmap unwinds (may be important on powerpc
* and ia64).
*/
- vm_flags_set(vma, VM_HUGETLB | VM_DONTEXPAND);
+ vm_flags_set(vma, VM_HUGETLB | VM_DONTEXPAND | VM_MTE_ALLOWED);
vma->vm_ops = &hugetlb_vm_ops;
ret = seal_check_write(info->seals, vma);
_
Patches currently in -mm which might be from yang@xxxxxxxxxxxxxxxxxxxxxx are
mm-page_ref-remove-folio_try_get_rcu.patch
hugetlbfs-add-mte-support.patch
