[PATCH 6/7] free_pgtable_range for hugetlb

From: Adam Litke
Date: Mon Feb 19 2007 - 13:33:47 EST



Signed-off-by: Adam Litke <agl@xxxxxxxxxx>
---

fs/hugetlbfs/inode.c | 1 +
mm/memory.c | 6 +++---
2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c
index 1016694..3461f9b 100644
--- a/fs/hugetlbfs/inode.c
+++ b/fs/hugetlbfs/inode.c
@@ -567,6 +567,7 @@ static struct pagetable_operations_struct hugetlbfs_pagetable_ops = {
.pin_pages = follow_hugetlb_page,
.unmap_page_range = unmap_hugepage_range,
.change_protection = hugetlb_change_protection,
+ .free_pgtable_range = hugetlb_free_pgd_range,
};

static struct inode_operations hugetlbfs_dir_inode_operations = {
diff --git a/mm/memory.c b/mm/memory.c
index aa6b06e..442e6b2 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -279,15 +279,15 @@ void free_pgtables(struct mmu_gather **tlb, struct vm_area_struct *vma,
anon_vma_unlink(vma);
unlink_file_vma(vma);

- if (is_vm_hugetlb_page(vma)) {
- hugetlb_free_pgd_range(tlb, addr, vma->vm_end,
+ if (has_pt_op(vma, free_pgtable_range)) {
+ pt_op(vma, free_pgtable_range)(tlb, addr, vma->vm_end,
floor, next? next->vm_start: ceiling);
} else {
/*
* Optimization: gather nearby vmas into one call down
*/
while (next && next->vm_start <= vma->vm_end + PMD_SIZE
- && !is_vm_hugetlb_page(next)) {
+ && !has_pt_op(next, free_pgtable_range)) {
vma = next;
next = vma->vm_next;
anon_vma_unlink(vma);
-
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