The patch titled
Subject: mmap: remove the IA64-specific vma expansion implementation
has been added to the -mm mm-unstable branch. Its filename is
mmap-remove-the-ia64-specific-vma-expansion-implementation.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mmap-remove-the-ia64-specific-vma-expansion-implementation.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next via the mm-everything
branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
and is updated there every 2-3 working days
------------------------------------------------------
From: Lukas Bulwahn <lukas.bulwahn@xxxxxxxxx>
Subject: mmap: remove the IA64-specific vma expansion implementation
Date: Mon, 13 Nov 2023 13:47:28 +0100
With commit cf8e8658100d ("arch: Remove Itanium (IA-64) architecture"),
there is no need to keep the IA64-specific vma expansion.
Clean up the IA64-specific vma expansion implementation.
Link: https://lkml.kernel.org/r/20231113124728.3974-1-lukas.bulwahn@xxxxxxxxx
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@xxxxxxxxx>
Acked-by: David Hildenbrand <david@xxxxxxxxxx>
Cc: Ard Biesheuvel <ardb@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/mmap.c | 37 +------------------------------------
1 file changed, 1 insertion(+), 36 deletions(-)
--- a/mm/mmap.c~mmap-remove-the-ia64-specific-vma-expansion-implementation
+++ a/mm/mmap.c
@@ -2207,42 +2207,7 @@ struct vm_area_struct *find_extend_vma_l
}
#endif
-/*
- * IA64 has some horrid mapping rules: it can expand both up and down,
- * but with various special rules.
- *
- * We'll get rid of this architecture eventually, so the ugliness is
- * temporary.
- */
-#ifdef CONFIG_IA64
-static inline bool vma_expand_ok(struct vm_area_struct *vma, unsigned long addr)
-{
- return REGION_NUMBER(addr) == REGION_NUMBER(vma->vm_start) &&
- REGION_OFFSET(addr) < RGN_MAP_LIMIT;
-}
-
-/*
- * IA64 stacks grow down, but there's a special register backing store
- * that can grow up. Only sequentially, though, so the new address must
- * match vm_end.
- */
-static inline int vma_expand_up(struct vm_area_struct *vma, unsigned long addr)
-{
- if (!vma_expand_ok(vma, addr))
- return -EFAULT;
- if (vma->vm_end != (addr & PAGE_MASK))
- return -EFAULT;
- return expand_upwards(vma, addr);
-}
-
-static inline bool vma_expand_down(struct vm_area_struct *vma, unsigned long addr)
-{
- if (!vma_expand_ok(vma, addr))
- return -EFAULT;
- return expand_downwards(vma, addr);
-}
-
-#elif defined(CONFIG_STACK_GROWSUP)
+#if defined(CONFIG_STACK_GROWSUP)
#define vma_expand_up(vma,addr) expand_upwards(vma, addr)
#define vma_expand_down(vma, addr) (-EFAULT)
_
Patches currently in -mm which might be from lukas.bulwahn@xxxxxxxxx are
mmap-remove-the-ia64-specific-vma-expansion-implementation.patch
