lkml.org 
[lkml]   [2007]   [Feb]   [19]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 7/7] hugetlbfs fault handler
Date

Signed-off-by: Adam Litke <agl@us.ibm.com>
---
fs/hugetlbfs/inode.c | 1 +
mm/hugetlb.c | 4 +++-
mm/memory.c | 4 ++--
3 files changed, 6 insertions(+), 3 deletions(-)
diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c
index 3461f9b..1de73c1 100644
--- a/fs/hugetlbfs/inode.c
+++ b/fs/hugetlbfs/inode.c
@@ -568,6 +568,7 @@ static struct pagetable_operations_struct hugetlbfs_pagetable_ops = {
.unmap_page_range = unmap_hugepage_range,
.change_protection = hugetlb_change_protection,
.free_pgtable_range = hugetlb_free_pgd_range,
+ .fault = hugetlb_fault,
};

static struct inode_operations hugetlbfs_dir_inode_operations = {
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 3bcc0db..63de369 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -588,6 +588,8 @@ int follow_hugetlb_page(struct mm_struct *mm, struct vm_area_struct *vma,
unsigned long vaddr = *position;
int remainder = *length;

+ BUG_ON(!has_pt_op(vma, fault));
+
spin_lock(&mm->page_table_lock);
while (vaddr < vma->vm_end && remainder) {
pte_t *pte;
@@ -604,7 +606,7 @@ int follow_hugetlb_page(struct mm_struct *mm, struct vm_area_struct *vma,
int ret;

spin_unlock(&mm->page_table_lock);
- ret = hugetlb_fault(mm, vma, vaddr, 0);
+ ret = pt_op(vma, fault)(mm, vma, vaddr, 0);
spin_lock(&mm->page_table_lock);
if (ret == VM_FAULT_MINOR)
continue;
diff --git a/mm/memory.c b/mm/memory.c
index 442e6b2..c8e17b4 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -2455,8 +2455,8 @@ int __handle_mm_fault(struct mm_struct *mm, struct vm_area_struct *vma,

count_vm_event(PGFAULT);

- if (unlikely(is_vm_hugetlb_page(vma)))
- return hugetlb_fault(mm, vma, address, write_access);
+ if (unlikely(has_pt_op(vma, fault)))
+ return pt_op(vma, fault)(mm, vma, address, write_access);

pgd = pgd_offset(mm, address);
pud = pud_alloc(mm, pgd, address);
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
\
 
 \ /
  Last update: 2007-02-19 19:35    [from the cache]
©2003-2011 Jasper Spaans. Advertise on this site