C++ (Cpp) lov_layout_changeの例

コード例 #1

static int lov_conf_set(const struct lu_env *env, struct cl_object *obj,
			const struct cl_object_conf *conf)
{
	struct lov_stripe_md	*lsm = NULL;
	struct lov_object	*lov = cl2lov(obj);
	int			 result = 0;

	lov_conf_lock(lov);
	if (conf->coc_opc == OBJECT_CONF_INVALIDATE) {
		lov->lo_layout_invalid = true;
		result = 0;
		goto out;
	}

	if (conf->coc_opc == OBJECT_CONF_WAIT) {
		if (lov->lo_layout_invalid &&
		    atomic_read(&lov->lo_active_ios) > 0) {
			lov_conf_unlock(lov);
			result = lov_layout_wait(env, lov);
			lov_conf_lock(lov);
		}
		goto out;
	}

	LASSERT(conf->coc_opc == OBJECT_CONF_SET);

	if (conf->u.coc_md)
		lsm = conf->u.coc_md->lsm;
	if ((!lsm && !lov->lo_lsm) ||
	    ((lsm && lov->lo_lsm) &&
	     (lov->lo_lsm->lsm_layout_gen == lsm->lsm_layout_gen) &&
	     (lov->lo_lsm->lsm_pattern == lsm->lsm_pattern))) {
		/* same version of layout */
		lov->lo_layout_invalid = false;
		result = 0;
		goto out;
	}

	/* will change layout - check if there still exists active IO. */
	if (atomic_read(&lov->lo_active_ios) > 0) {
		lov->lo_layout_invalid = true;
		result = -EBUSY;
		goto out;
	}

	result = lov_layout_change(env, lov, conf);
	lov->lo_layout_invalid = result != 0;

out:
	lov_conf_unlock(lov);
	CDEBUG(D_INODE, DFID" lo_layout_invalid=%d\n",
	       PFID(lu_object_fid(lov2lu(lov))), lov->lo_layout_invalid);
	return result;
}

コード例 #2

ファイル: lov_object.c プロジェクト: girishshilamkar/lustre-release

static int lov_conf_set(const struct lu_env *env, struct cl_object *obj,
                        const struct cl_object_conf *conf)
{
	struct lov_stripe_md	*lsm = NULL;
	struct lov_object	*lov = cl2lov(obj);
	int			 result = 0;
	ENTRY;

	lov_conf_lock(lov);
	if (conf->coc_opc == OBJECT_CONF_INVALIDATE) {
		lov->lo_layout_invalid = true;
		GOTO(out, result = 0);
	}

	if (conf->coc_opc == OBJECT_CONF_WAIT) {
		if (lov->lo_layout_invalid &&
		    cfs_atomic_read(&lov->lo_active_ios) > 0) {
			lov_conf_unlock(lov);
			result = lov_layout_wait(env, lov);
			lov_conf_lock(lov);
		}
		GOTO(out, result);
	}

	LASSERT(conf->coc_opc == OBJECT_CONF_SET);

	if (conf->u.coc_md != NULL)
		lsm = conf->u.coc_md->lsm;
	if ((lsm == NULL && lov->lo_lsm == NULL) ||
	    (lsm != NULL && lov->lo_lsm != NULL &&
	     lov->lo_lsm->lsm_layout_gen == lsm->lsm_layout_gen)) {
		/* same version of layout */
		lov->lo_layout_invalid = false;
		GOTO(out, result = 0);
	}

	/* will change layout - check if there still exists active IO. */
	if (cfs_atomic_read(&lov->lo_active_ios) > 0) {
		lov->lo_layout_invalid = true;
		GOTO(out, result = -EBUSY);
	}

	lov->lo_layout_invalid = lov_layout_change(env, lov, conf);
	EXIT;

out:
	lov_conf_unlock(lov);
	RETURN(result);
}

コード例 #3

ファイル: lov_object.c プロジェクト: KnightKu/lustre-stable

static int lov_conf_set(const struct lu_env *env, struct cl_object *obj,
                        const struct cl_object_conf *conf)
{
	struct lov_stripe_md	*lsm = NULL;
	struct lov_object	*lov = cl2lov(obj);
	int			 result = 0;
	ENTRY;

	if (conf->coc_opc == OBJECT_CONF_SET &&
	    conf->u.coc_layout.lb_buf != NULL) {
		lsm = lov_unpackmd(lov_object_dev(lov)->ld_lov,
				   conf->u.coc_layout.lb_buf,
				   conf->u.coc_layout.lb_len);
		if (IS_ERR(lsm))
			RETURN(PTR_ERR(lsm));
	}

	lov_conf_lock(lov);
	if (conf->coc_opc == OBJECT_CONF_INVALIDATE) {
		lov->lo_layout_invalid = true;
		GOTO(out, result = 0);
	}

	if (conf->coc_opc == OBJECT_CONF_WAIT) {
		if (lov->lo_layout_invalid &&
		    atomic_read(&lov->lo_active_ios) > 0) {
			lov_conf_unlock(lov);
			result = lov_layout_wait(env, lov);
			lov_conf_lock(lov);
		}
		GOTO(out, result);
	}

	LASSERT(conf->coc_opc == OBJECT_CONF_SET);

	if ((lsm == NULL && lov->lo_lsm == NULL) ||
	    ((lsm != NULL && lov->lo_lsm != NULL) &&
	     (lov->lo_lsm->lsm_layout_gen == lsm->lsm_layout_gen) &&
	     (lov->lo_lsm->lsm_pattern == lsm->lsm_pattern))) {
		/* same version of layout */
		lov->lo_layout_invalid = false;
		GOTO(out, result = 0);
	}

	/* will change layout - check if there still exists active IO. */
	if (atomic_read(&lov->lo_active_ios) > 0) {
		lov->lo_layout_invalid = true;
		GOTO(out, result = -EBUSY);
	}

	result = lov_layout_change(env, lov, lsm, conf);
	lov->lo_layout_invalid = result != 0;
	EXIT;

out:
	lov_conf_unlock(lov);
	lov_lsm_put(lsm);
	CDEBUG(D_INODE, DFID" lo_layout_invalid=%d\n",
	       PFID(lu_object_fid(lov2lu(lov))), lov->lo_layout_invalid);
	RETURN(result);
}