diff options
Diffstat (limited to 'fs/hugetlbfs/inode.c')
| -rw-r--r-- | fs/hugetlbfs/inode.c | 21 |
1 files changed, 13 insertions, 8 deletions
diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c index 8c718a3d413..aa083dd34e9 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; @@ -552,9 +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) - inode_init_once(&ei->vfs_inode); + inode_init_once(&ei->vfs_inode); } const struct file_operations hugetlbfs_file_operations = { @@ -744,6 +746,9 @@ 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); |