[merged mm-stable] mm-remove-obsolete-pgd_offset_gate.patch removed from -mm tree

[merged mm-stable] mm-remove-obsolete-pgd_offset_gate.patch removed from -mm tree

[Andrew Morton]

The quilt patch titled
     Subject: mm: remove obsolete pgd_offset_gate()
has been removed from the -mm tree.  Its filename was
     mm-remove-obsolete-pgd_offset_gate.patch

This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

------------------------------------------------------
From: Feng Lee <379943137@qq.com>
Subject: mm: remove obsolete pgd_offset_gate()
Date: Fri, 9 May 2025 14:32:30 +0800

Remove pgd_offset_gate() completely and simply make the single caller use
pgd_offset().

It appears that the gate area resides in the kernel-mapped segment
exclusively on IA64.  Therefore, removing pgd_offset_k is safe since IA64
is now obsolete.

Link: https://lkml.kernel.org/r/tencent_503130C3CD56569191396268CF4D12F09A06@qq.com
Signed-off-by: Feng Lee <379943137@qq.com>
Reviewed-by: Barry Song <baohua@kernel.org>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: bibo mao <maobibo@loongson.cn>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Lance Yang <lance.yang@linux.dev>
Cc: Peter Xu <peterx@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 include/linux/pgtable.h |    4 ----
 mm/gup.c                |    5 +----
 2 files changed, 1 insertion(+), 8 deletions(-)

--- a/include/linux/pgtable.h~mm-remove-obsolete-pgd_offset_gate
+++ a/include/linux/pgtable.h
@@ -1164,10 +1164,6 @@ static inline void arch_swap_restore(swp
 }
 #endif
 
-#ifndef __HAVE_ARCH_PGD_OFFSET_GATE
-#define pgd_offset_gate(mm, addr)	pgd_offset(mm, addr)
-#endif
-
 #ifndef __HAVE_ARCH_MOVE_PTE
 #define move_pte(pte, old_addr, new_addr)	(pte)
 #endif
--- a/mm/gup.c~mm-remove-obsolete-pgd_offset_gate
+++ a/mm/gup.c
@@ -1102,10 +1102,7 @@ static int get_gate_page(struct mm_struc
 	/* user gate pages are read-only */
 	if (gup_flags & FOLL_WRITE)
 		return -EFAULT;
-	if (address > TASK_SIZE)
-		pgd = pgd_offset_k(address);
-	else
-		pgd = pgd_offset_gate(mm, address);
+	pgd = pgd_offset(mm, address);
 	if (pgd_none(*pgd))
 		return -EFAULT;
 	p4d = p4d_offset(pgd, address);
_

Patches currently in -mm which might be from 379943137@qq.com are