C++ (Cpp) ceph_dentry_lru_addの例

コード例 #1

ファイル: dir.c プロジェクト: 3sOx/asuswrt-merlin

/*
 * Initialize ceph dentry state.
 */
int ceph_init_dentry(struct dentry *dentry)
{
	struct ceph_dentry_info *di;

	if (dentry->d_fsdata)
		return 0;

	if (ceph_snap(dentry->d_parent->d_inode) == CEPH_NOSNAP)
		dentry->d_op = &ceph_dentry_ops;
	else if (ceph_snap(dentry->d_parent->d_inode) == CEPH_SNAPDIR)
		dentry->d_op = &ceph_snapdir_dentry_ops;
	else
		dentry->d_op = &ceph_snap_dentry_ops;

	di = kmem_cache_alloc(ceph_dentry_cachep, GFP_NOFS | __GFP_ZERO);
	if (!di)
		return -ENOMEM;          /* oh well */

	spin_lock(&dentry->d_lock);
	if (dentry->d_fsdata) {
		/* lost a race */
		kmem_cache_free(ceph_dentry_cachep, di);
		goto out_unlock;
	}
	di->dentry = dentry;
	di->lease_session = NULL;
	dentry->d_fsdata = di;
	dentry->d_time = jiffies;
	ceph_dentry_lru_add(dentry);
out_unlock:
	spin_unlock(&dentry->d_lock);
	return 0;
}

コード例 #2

ファイル: dir.c プロジェクト: acton393/linux

/*
 * Initialize ceph dentry state.
 */
int ceph_init_dentry(struct dentry *dentry)
{
	struct ceph_dentry_info *di;

	if (dentry->d_fsdata)
		return 0;

	di = kmem_cache_zalloc(ceph_dentry_cachep, GFP_KERNEL);
	if (!di)
		return -ENOMEM;          /* oh well */

	spin_lock(&dentry->d_lock);
	if (dentry->d_fsdata) {
		/* lost a race */
		kmem_cache_free(ceph_dentry_cachep, di);
		goto out_unlock;
	}

	if (ceph_snap(d_inode(dentry->d_parent)) == CEPH_NOSNAP)
		d_set_d_op(dentry, &ceph_dentry_ops);
	else if (ceph_snap(d_inode(dentry->d_parent)) == CEPH_SNAPDIR)
		d_set_d_op(dentry, &ceph_snapdir_dentry_ops);
	else
		d_set_d_op(dentry, &ceph_snap_dentry_ops);

	di->dentry = dentry;
	di->lease_session = NULL;
	di->time = jiffies;
	/* avoid reordering d_fsdata setup so that the check above is safe */
	smp_mb();
	dentry->d_fsdata = di;
	ceph_dentry_lru_add(dentry);
out_unlock:
	spin_unlock(&dentry->d_lock);
	return 0;
}