The patch titled
Subject: mm: use vm_unmapped_area() on frv architecture
has been added to the -mm tree. Its filename is
mm-use-vm_unmapped_area-on-frv-architecture.patch
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*** Remember to use Documentation/SubmitChecklist when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Michel Lespinasse <walken@xxxxxxxxxx>
Subject: mm: use vm_unmapped_area() on frv architecture
Update the frv arch_get_unmapped_area function to make use of
vm_unmapped_area() instead of implementing a brute force search.
Signed-off-by: Michel Lespinasse <walken@xxxxxxxxxx>
Acked-by: Rik van Riel <riel@xxxxxxxxxx>
Acked-by: David Howells <dhowells@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/frv/mm/elf-fdpic.c | 49 +++++++++++++-------------------------
1 file changed, 17 insertions(+), 32 deletions(-)
diff -puN arch/frv/mm/elf-fdpic.c~mm-use-vm_unmapped_area-on-frv-architecture arch/frv/mm/elf-fdpic.c
--- a/arch/frv/mm/elf-fdpic.c~mm-use-vm_unmapped_area-on-frv-architecture
+++ a/arch/frv/mm/elf-fdpic.c
@@ -60,7 +60,7 @@ unsigned long arch_get_unmapped_area(str
unsigned long pgoff, unsigned long flags)
{
struct vm_area_struct *vma;
- unsigned long limit;
+ struct vm_unmapped_area_info info;
if (len > TASK_SIZE)
return -ENOMEM;
@@ -79,39 +79,24 @@ unsigned long arch_get_unmapped_area(str
}
/* search between the bottom of user VM and the stack grow area */
- addr = PAGE_SIZE;
- limit = (current->mm->start_stack - 0x00200000);
- if (addr + len <= limit) {
- limit -= len;
-
- if (addr <= limit) {
- vma = find_vma(current->mm, PAGE_SIZE);
- for (; vma; vma = vma->vm_next) {
- if (addr > limit)
- break;
- if (addr + len <= vma->vm_start)
- goto success;
- addr = vma->vm_end;
- }
- }
- }
+ info.flags = 0;
+ info.length = len;
+ info.low_limit = PAGE_SIZE;
+ info.high_limit = (current->mm->start_stack - 0x00200000);
+ info.align_mask = 0;
+ info.align_offset = 0;
+ addr = vm_unmapped_area(&info);
+ if (!(addr & ~PAGE_MASK))
+ goto success;
+ VM_BUG_ON(addr != -ENOMEM);
/* search from just above the WorkRAM area to the top of memory */
- addr = PAGE_ALIGN(0x80000000);
- limit = TASK_SIZE - len;
- if (addr <= limit) {
- vma = find_vma(current->mm, addr);
- for (; vma; vma = vma->vm_next) {
- if (addr > limit)
- break;
- if (addr + len <= vma->vm_start)
- goto success;
- addr = vma->vm_end;
- }
-
- if (!vma && addr <= limit)
- goto success;
- }
+ info.low_limit = PAGE_ALIGN(0x80000000);
+ info.high_limit = TASK_SIZE;
+ addr = vm_unmapped_area(&info);
+ if (!(addr & ~PAGE_MASK))
+ goto success;
+ VM_BUG_ON(addr != -ENOMEM);
#if 0
printk("[area] l=%lx (ENOMEM) f='%s'\n",
_
Patches currently in -mm which might be from walken@xxxxxxxxxx are
thp-avoid-dumping-huge-zero-page.patch
linux-next.patch
mm-make-mlockall-preserve-flags-other-than-vm_locked-in-def_flags.patch
mm-remap_file_pages-fixes.patch
mm-introduce-mm_populate-for-populating-new-vmas.patch
mm-use-mm_populate-for-blocking-remap_file_pages.patch
mm-use-mm_populate-when-adjusting-brk-with-mcl_future-in-effect.patch
mm-use-mm_populate-for-mremap-of-vm_locked-vmas.patch
mm-remove-flags-argument-to-mmap_region.patch
mm-remove-flags-argument-to-mmap_region-fix.patch
mm-directly-use-__mlock_vma_pages_range-in-find_extend_vma.patch
mm-introduce-vm_populate-flag-to-better-deal-with-racy-userspace-programs.patch
mm-make-do_mmap_pgoff-return-populate-as-a-size-in-bytes-not-as-a-bool.patch
mm-use-long-type-for-page-counts-in-mm_populate-and-get_user_pages.patch
mm-use-vm_unmapped_area-on-parisc-architecture.patch
mm-use-vm_unmapped_area-on-alpha-architecture.patch
mm-use-vm_unmapped_area-on-frv-architecture.patch
mm-use-vm_unmapped_area-on-ia64-architecture.patch
mm-use-vm_unmapped_area-in-hugetlbfs-on-ia64-architecture.patch
mm-remove-free_area_cache-use-in-powerpc-architecture.patch
mm-use-vm_unmapped_area-on-powerpc-architecture.patch
mm-remove-free_area_cache.patch
mtd-mtd_nandecctest-use-prandom_bytes-instead-of-get_random_bytes.patch
mtd-mtd_oobtest-convert-to-use-prandom-library.patch
mtd-mtd_pagetest-convert-to-use-prandom-library.patch
mtd-mtd_speedtest-use-prandom_bytes.patch
mtd-mtd_subpagetest-convert-to-use-prandom-library.patch
mtd-mtd_stresstest-use-prandom_bytes.patch
mutex-subsystem-synchro-test-module.patch
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