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Diffstat (limited to 'fs/hugetlbfs/inode.c')
-rw-r--r--fs/hugetlbfs/inode.c20
1 files changed, 13 insertions, 7 deletions
diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c
index 8c718a3d413f..98959b87cdf8 100644
--- a/fs/hugetlbfs/inode.c
+++ b/fs/hugetlbfs/inode.c
@@ -22,6 +22,7 @@
#include <linux/backing-dev.h>
#include <linux/hugetlb.h>
#include <linux/pagevec.h>
+#include <linux/mman.h>
#include <linux/quotaops.h>
#include <linux/slab.h>
#include <linux/dnotify.h>
@@ -98,10 +99,7 @@ out:
* Called under down_write(mmap_sem).
*/
-#ifdef HAVE_ARCH_HUGETLB_UNMAPPED_AREA
-unsigned long hugetlb_get_unmapped_area(struct file *file, unsigned long addr,
- unsigned long len, unsigned long pgoff, unsigned long flags);
-#else
+#ifndef HAVE_ARCH_HUGETLB_UNMAPPED_AREA
static unsigned long
hugetlb_get_unmapped_area(struct file *file, unsigned long addr,
unsigned long len, unsigned long pgoff, unsigned long flags)
@@ -115,6 +113,12 @@ hugetlb_get_unmapped_area(struct file *file, unsigned long addr,
if (len > TASK_SIZE)
return -ENOMEM;
+ if (flags & MAP_FIXED) {
+ if (prepare_hugepage_range(addr, len, pgoff))
+ return -EINVAL;
+ return addr;
+ }
+
if (addr) {
addr = ALIGN(addr, HPAGE_SIZE);
vma = find_vma(mm, addr);
@@ -453,7 +457,7 @@ static int hugetlbfs_symlink(struct inode *dir,
*/
static int hugetlbfs_set_page_dirty(struct page *page)
{
- struct page *head = (struct page *)page_private(page);
+ struct page *head = compound_head(page);
SetPageDirty(head);
return 0;
@@ -552,8 +556,7 @@ static void init_once(void *foo, struct kmem_cache *cachep, unsigned long flags)
{
struct hugetlbfs_inode_info *ei = (struct hugetlbfs_inode_info *)foo;
- if ((flags & (SLAB_CTOR_VERIFY|SLAB_CTOR_CONSTRUCTOR)) ==
- SLAB_CTOR_CONSTRUCTOR)
+ if (flags & SLAB_CTOR_CONSTRUCTOR)
inode_init_once(&ei->vfs_inode);
}
@@ -744,6 +747,9 @@ struct file *hugetlb_zero_setup(size_t size)
char buf[16];
static atomic_t counter;
+ if (!hugetlbfs_vfsmount)
+ return ERR_PTR(-ENOENT);
+
if (!can_do_hugetlb_shm())
return ERR_PTR(-EPERM);