Merge branch 'linus' of master.kernel.org:/pub/scm/linux/kernel/git/perex/alsa

[powerpc.git] / fs / hugetlbfs / inode.c

diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c
index 0bea6a6..8c718a3 100644 (file)
--- a/fs/hugetlbfs/inode.c
+++ b/fs/hugetlbfs/inode.c
@@ -33,11 +33,11 @@
 /* some random number */
 #define HUGETLBFS_MAGIC        0x958458f6
 
-static struct super_operations hugetlbfs_ops;
+static const struct super_operations hugetlbfs_ops;
 static const struct address_space_operations hugetlbfs_aops;
 const struct file_operations hugetlbfs_file_operations;
-static struct inode_operations hugetlbfs_dir_inode_operations;
-static struct inode_operations hugetlbfs_inode_operations;
+static const struct inode_operations hugetlbfs_dir_inode_operations;
+static const struct inode_operations hugetlbfs_inode_operations;
 
 static struct backing_dev_info hugetlbfs_backing_dev_info = {
        .ra_pages       = 0,    /* No readahead */
@@ -58,28 +58,23 @@ static void huge_pagevec_release(struct pagevec *pvec)
 
 static int hugetlbfs_file_mmap(struct file *file, struct vm_area_struct *vma)
 {
-       struct inode *inode = file->f_dentry->d_inode;
+       struct inode *inode = file->f_path.dentry->d_inode;
        loff_t len, vma_len;
        int ret;
 
-       if (vma->vm_pgoff & (HPAGE_SIZE / PAGE_SIZE - 1))
-               return -EINVAL;
-
-       if (vma->vm_start & ~HPAGE_MASK)
-               return -EINVAL;
-
-       if (vma->vm_end & ~HPAGE_MASK)
-               return -EINVAL;
-
-       if (vma->vm_end - vma->vm_start < HPAGE_SIZE)
-               return -EINVAL;
+       /*
+        * vma alignment has already been checked by prepare_hugepage_range.
+        * If you add any error returns here, do so after setting VM_HUGETLB,
+        * so is_vm_hugetlb_page tests below unmap_region go the right way
+        * when do_mmap_pgoff unwinds (may be important on powerpc and ia64).
+        */
+       vma->vm_flags |= VM_HUGETLB | VM_RESERVED;
+       vma->vm_ops = &hugetlb_vm_ops;
 
        vma_len = (loff_t)(vma->vm_end - vma->vm_start);
 
        mutex_lock(&inode->i_mutex);
        file_accessed(file);
-       vma->vm_flags |= VM_HUGETLB | VM_RESERVED;
-       vma->vm_ops = &hugetlb_vm_ops;
 
        ret = -ENOMEM;
        len = vma_len + ((loff_t)vma->vm_pgoff << PAGE_SHIFT);
@@ -181,7 +176,7 @@ static int hugetlbfs_commit_write(struct file *file,
 
 static void truncate_huge_page(struct page *page)
 {
-       clear_page_dirty(page);
+       cancel_dirty_page(page, /* No IO accounting for huge pages? */0);
        ClearPageUptodate(page);
        remove_from_page_cache(page);
        put_page(page);
@@ -454,10 +449,13 @@ static int hugetlbfs_symlink(struct inode *dir,
 }
 
 /*
- * For direct-IO reads into hugetlb pages
+ * mark the head page dirty
  */
 static int hugetlbfs_set_page_dirty(struct page *page)
 {
+       struct page *head = (struct page *)page_private(page);
+
+       SetPageDirty(head);
        return 0;
 }
 
@@ -518,7 +516,7 @@ static void hugetlbfs_inc_free_inodes(struct hugetlbfs_sb_info *sbinfo)
 }
 
 
-static kmem_cache_t *hugetlbfs_inode_cachep;
+static struct kmem_cache *hugetlbfs_inode_cachep;
 
 static struct inode *hugetlbfs_alloc_inode(struct super_block *sb)
 {
@@ -527,7 +525,7 @@ static struct inode *hugetlbfs_alloc_inode(struct super_block *sb)
 
        if (unlikely(!hugetlbfs_dec_free_inodes(sbinfo)))
                return NULL;
-       p = kmem_cache_alloc(hugetlbfs_inode_cachep, SLAB_KERNEL);
+       p = kmem_cache_alloc(hugetlbfs_inode_cachep, GFP_KERNEL);
        if (unlikely(!p)) {
                hugetlbfs_inc_free_inodes(sbinfo);
                return NULL;
@@ -550,7 +548,7 @@ static const struct address_space_operations hugetlbfs_aops = {
 };
 
 
-static void init_once(void *foo, kmem_cache_t *cachep, unsigned long flags)
+static void init_once(void *foo, struct kmem_cache *cachep, unsigned long flags)
 {
        struct hugetlbfs_inode_info *ei = (struct hugetlbfs_inode_info *)foo;
 
@@ -565,7 +563,7 @@ const struct file_operations hugetlbfs_file_operations = {
        .get_unmapped_area      = hugetlb_get_unmapped_area,
 };
 
-static struct inode_operations hugetlbfs_dir_inode_operations = {
+static const struct inode_operations hugetlbfs_dir_inode_operations = {
        .create         = hugetlbfs_create,
        .lookup         = simple_lookup,
        .link           = simple_link,
@@ -578,11 +576,11 @@ static struct inode_operations hugetlbfs_dir_inode_operations = {
        .setattr        = hugetlbfs_setattr,
 };
 
-static struct inode_operations hugetlbfs_inode_operations = {
+static const struct inode_operations hugetlbfs_inode_operations = {
        .setattr        = hugetlbfs_setattr,
 };
 
-static struct super_operations hugetlbfs_ops = {
+static const struct super_operations hugetlbfs_ops = {
        .alloc_inode    = hugetlbfs_alloc_inode,
        .destroy_inode  = hugetlbfs_destroy_inode,
        .statfs         = hugetlbfs_statfs,
@@ -779,8 +777,8 @@ struct file *hugetlb_zero_setup(size_t size)
        d_instantiate(dentry, inode);
        inode->i_size = size;
        inode->i_nlink = 0;
-       file->f_vfsmnt = mntget(hugetlbfs_vfsmount);
-       file->f_dentry = dentry;
+       file->f_path.mnt = mntget(hugetlbfs_vfsmount);
+       file->f_path.dentry = dentry;
        file->f_mapping = inode->i_mapping;
        file->f_op = &hugetlbfs_file_operations;
        file->f_mode = FMODE_WRITE | FMODE_READ;