varr.c

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/* -*- C -*- */
/*
 * Copyright (c) 2013-2020 Seagate Technology LLC and/or its Affiliates
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * For any questions about this software or licensing,
 * please email opensource@seagate.com or cortx-questions@seagate.com.
 *
 */


#include "lib/varr.h"           /* m0_varr */
#include "lib/varr_private.h"
#include "lib/bob.h"            /* m0_bob_type */
#include "lib/types.h"          /* Includes appropriate types header. */
#include "lib/memory.h"         /* m0_alloc(), m0_free() */
#include <linux/pagemap.h>

M0_EXTERN void *m0_varr_buf_alloc(size_t bufsize)
{
        if (bufsize == PAGE_SIZE)
                return (void *)get_zeroed_page(GFP_KERNEL);
        else
                return m0_alloc(bufsize);
}

M0_EXTERN void m0_varr_buf_free(void *buf, size_t bufsize)
{
        M0_PRE(buf != NULL);
        if (bufsize == PAGE_SIZE)
                free_page((unsigned long)buf);
        else
                m0_free(buf);
}

/*
 *  Local variables:
 *  c-indentation-style: "K&R"
 *  c-basic-offset: 8
 *  tab-width: 8
 *  fill-column: 80
 *  scroll-step: 1
 *  End:
 */