/**
* Dual to ll_vm_open().
*/
static void ll_vm_close(struct vm_area_struct *vma)
{
struct inode *inode = file_inode(vma->vm_file);
struct ccc_object *vob = cl_inode2ccc(inode);
LASSERT(vma->vm_file);
atomic_dec(&vob->cob_mmap_cnt);
LASSERT(atomic_read(&vob->cob_mmap_cnt) >= 0);
}
/*
* Check whether file has possible unwriten pages.
*
* \retval 1 file is mmap-ed or has dirty pages
* 0 otherwise
*/
blkcnt_t dirty_cnt(struct inode *inode)
{
blkcnt_t cnt = 0;
struct ccc_object *vob = cl_inode2ccc(inode);
void *results[1];
if (inode->i_mapping != NULL)
cnt += radix_tree_gang_lookup_tag(&inode->i_mapping->page_tree,
results, 0, 1,
PAGECACHE_TAG_DIRTY);
if (cnt == 0 && atomic_read(&vob->cob_mmap_cnt) > 0)
cnt = 1;
return (cnt > 0) ? 1 : 0;
}