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Commit d414c104 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge tag 'please-pull-vm_unwrapped' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux 

Pull ia64 update from Tony Luck:
 "ia64 vm patch series that was cooking in -mm tree"

* tag 'please-pull-vm_unwrapped' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux:
  mm: use vm_unmapped_area() in hugetlbfs on ia64 architecture
  mm: use vm_unmapped_area() on ia64 architecture
parents f6d43b93 e31048af

arch/ia64/kernel/sys_ia64.c

+12 −25
Original line number Diff line number Diff line
@@ -25,9 +25,9 @@ arch_get_unmapped_area (struct file *filp, unsigned long addr, unsigned long len 
			unsigned long pgoff, unsigned long flags)

{

	long map_shared = (flags & MAP_SHARED);

	unsigned long start_addr, align_mask = PAGE_SIZE - 1;

	unsigned long align_mask = 0;

	struct mm_struct *mm = current->mm;

	struct vm_area_struct *vma;

	struct vm_unmapped_area_info info;



	if (len > RGN_MAP_LIMIT)

		return -ENOMEM;
@@ -44,7 +44,7 @@ arch_get_unmapped_area (struct file *filp, unsigned long addr, unsigned long len 
		addr = 0;

#endif

	if (!addr)

		addr = mm->free_area_cache;

		addr = TASK_UNMAPPED_BASE;



	if (map_shared && (TASK_SIZE > 0xfffffffful))

		/*
@@ -53,28 +53,15 @@ arch_get_unmapped_area (struct file *filp, unsigned long addr, unsigned long len 
		 * tasks, we prefer to avoid exhausting the address space too quickly by

		 * limiting alignment to a single page.

		 */

		align_mask = SHMLBA - 1;



  full_search:

	start_addr = addr = (addr + align_mask) & ~align_mask;



	for (vma = find_vma(mm, addr); ; vma = vma->vm_next) {

		/* At this point:  (!vma || addr < vma->vm_end). */

		if (TASK_SIZE - len < addr || RGN_MAP_LIMIT - len < REGION_OFFSET(addr)) {

			if (start_addr != TASK_UNMAPPED_BASE) {

				/* Start a new search --- just in case we missed some holes.  */

				addr = TASK_UNMAPPED_BASE;

				goto full_search;

			}

			return -ENOMEM;

		}

		if (!vma || addr + len <= vma->vm_start) {

			/* Remember the address where we stopped this search:  */

			mm->free_area_cache = addr + len;

			return addr;

		}

		addr = (vma->vm_end + align_mask) & ~align_mask;

	}

		align_mask = PAGE_MASK & (SHMLBA - 1);



	info.flags = 0;

	info.length = len;

	info.low_limit = addr;

	info.high_limit = TASK_SIZE;

	info.align_mask = align_mask;

	info.align_offset = 0;

	return vm_unmapped_area(&info);

}



asmlinkage long

arch/ia64/mm/hugetlbpage.c

+9 −11
Original line number Diff line number Diff line
@@ -148,7 +148,7 @@ void hugetlb_free_pgd_range(struct mmu_gather *tlb, 
unsigned long hugetlb_get_unmapped_area(struct file *file, unsigned long addr, unsigned long len,

		unsigned long pgoff, unsigned long flags)

{

	struct vm_area_struct *vmm;

	struct vm_unmapped_area_info info;



	if (len > RGN_MAP_LIMIT)

		return -ENOMEM;
@@ -165,16 +165,14 @@ unsigned long hugetlb_get_unmapped_area(struct file *file, unsigned long addr, u 
	/* This code assumes that RGN_HPAGE != 0. */

	if ((REGION_NUMBER(addr) != RGN_HPAGE) || (addr & (HPAGE_SIZE - 1)))

		addr = HPAGE_REGION_BASE;

	else

		addr = ALIGN(addr, HPAGE_SIZE);

	for (vmm = find_vma(current->mm, addr); ; vmm = vmm->vm_next) {

		/* At this point:  (!vmm || addr < vmm->vm_end). */

		if (REGION_OFFSET(addr) + len > RGN_MAP_LIMIT)

			return -ENOMEM;

		if (!vmm || (addr + len) <= vmm->vm_start)

			return addr;

		addr = ALIGN(vmm->vm_end, HPAGE_SIZE);

	}



	info.flags = 0;

	info.length = len;

	info.low_limit = addr;

	info.high_limit = HPAGE_REGION_BASE + RGN_MAP_LIMIT;

	info.align_mask = PAGE_MASK & (HPAGE_SIZE - 1);

	info.align_offset = 0;

	return vm_unmapped_area(&info);

}



static int __init hugetlb_setup_sz(char *str)