#define HUGETLBFS_MAGIC 0x958458f6
static struct super_operations hugetlbfs_ops;
-static struct address_space_operations hugetlbfs_aops;
+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 int hugetlbfs_file_mmap(struct file *file, struct vm_area_struct *vma)
{
struct inode *inode = file->f_dentry->d_inode;
- struct hugetlbfs_inode_info *info = HUGETLBFS_I(inode);
loff_t len, vma_len;
int ret;
ret = -ENOMEM;
len = vma_len + ((loff_t)vma->vm_pgoff << PAGE_SHIFT);
- if (!(vma->vm_flags & VM_WRITE) && len > inode->i_size)
- goto out;
- if (vma->vm_flags & VM_MAYSHARE)
- if (hugetlb_extend_reservation(info, len >> HPAGE_SHIFT) != 0)
- goto out;
+ if (vma->vm_flags & VM_MAYSHARE &&
+ hugetlb_reserve_pages(inode, vma->vm_pgoff >> (HPAGE_SHIFT-PAGE_SHIFT),
+ len >> HPAGE_SHIFT))
+ goto out;
ret = 0;
hugetlb_prefault_arch_hook(vma->vm_mm);
- if (inode->i_size < len)
+ if (vma->vm_flags & VM_WRITE && inode->i_size < len)
inode->i_size = len;
out:
mutex_unlock(&inode->i_mutex);
const pgoff_t start = lstart >> HPAGE_SHIFT;
struct pagevec pvec;
pgoff_t next;
- int i;
+ int i, freed = 0;
- hugetlb_truncate_reservation(HUGETLBFS_I(inode),
- lstart >> HPAGE_SHIFT);
- if (!mapping->nrpages)
- return;
pagevec_init(&pvec, 0);
next = start;
while (1) {
truncate_huge_page(page);
unlock_page(page);
hugetlb_put_quota(mapping);
+ freed++;
}
huge_pagevec_release(&pvec);
}
BUG_ON(!lstart && mapping->nrpages);
+ hugetlb_unreserve_pages(inode, start, freed);
}
static void hugetlbfs_delete_inode(struct inode *inode)
clear_inode(inode);
}
-static void hugetlbfs_forget_inode(struct inode *inode)
+static void hugetlbfs_forget_inode(struct inode *inode) __releases(inode_lock)
{
struct super_block *sb = inode->i_sb;
if (h_vm_pgoff >= h_pgoff)
v_offset = 0;
- unmap_hugepage_range(vma,
+ __unmap_hugepage_range(vma,
vma->vm_start + v_offset, vma->vm_end);
}
}
inode->i_mode = mode;
inode->i_uid = uid;
inode->i_gid = gid;
- inode->i_blksize = HPAGE_SIZE;
inode->i_blocks = 0;
inode->i_mapping->a_ops = &hugetlbfs_aops;
inode->i_mapping->backing_dev_info =&hugetlbfs_backing_dev_info;
inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME;
+ INIT_LIST_HEAD(&inode->i_mapping->private_list);
info = HUGETLBFS_I(inode);
mpol_shared_policy_init(&info->policy, MPOL_DEFAULT, NULL);
switch (mode & S_IFMT) {
inode->i_fop = &simple_dir_operations;
/* directory inodes start off with i_nlink == 2 (for "." entry) */
- inode->i_nlink++;
+ inc_nlink(inode);
break;
case S_IFLNK:
inode->i_op = &page_symlink_inode_operations;
{
int retval = hugetlbfs_mknod(dir, dentry, mode | S_IFDIR, 0);
if (!retval)
- dir->i_nlink++;
+ inc_nlink(dir);
return retval;
}
return 0;
}
-static int hugetlbfs_statfs(struct super_block *sb, struct kstatfs *buf)
+static int hugetlbfs_statfs(struct dentry *dentry, struct kstatfs *buf)
{
- struct hugetlbfs_sb_info *sbinfo = HUGETLBFS_SB(sb);
+ struct hugetlbfs_sb_info *sbinfo = HUGETLBFS_SB(dentry->d_sb);
buf->f_type = HUGETLBFS_MAGIC;
buf->f_bsize = HPAGE_SIZE;
hugetlbfs_inc_free_inodes(sbinfo);
return NULL;
}
- p->prereserved_hpages = 0;
return &p->vfs_inode;
}
kmem_cache_free(hugetlbfs_inode_cachep, HUGETLBFS_I(inode));
}
-static struct address_space_operations hugetlbfs_aops = {
+static const struct address_space_operations hugetlbfs_aops = {
.readpage = hugetlbfs_readpage,
.prepare_write = hugetlbfs_prepare_write,
.commit_write = hugetlbfs_commit_write,
}
}
-static struct super_block *hugetlbfs_get_sb(struct file_system_type *fs_type,
- int flags, const char *dev_name, void *data)
+static int hugetlbfs_get_sb(struct file_system_type *fs_type,
+ int flags, const char *dev_name, void *data, struct vfsmount *mnt)
{
- return get_sb_nodev(fs_type, flags, data, hugetlbfs_fill_super);
+ return get_sb_nodev(fs_type, flags, data, hugetlbfs_fill_super, mnt);
}
static struct file_system_type hugetlbfs_fs_type = {
goto out_file;
error = -ENOMEM;
- if (hugetlb_extend_reservation(HUGETLBFS_I(inode),
- size >> HPAGE_SHIFT) != 0)
+ if (hugetlb_reserve_pages(inode, 0, size >> HPAGE_SHIFT))
goto out_inode;
d_instantiate(dentry, inode);