linux/fs/ceph/mdsmap.c

// SPDX-License-Identifier: GPL-2.0
#include <linux/ceph/ceph_debug.h>

#include <linux/bug.h>
#include <linux/err.h>
#include <linux/random.h>
#include <linux/slab.h>
#include <linux/types.h>

#include <linux/ceph/messenger.h>
#include <linux/ceph/decode.h>

#include "mdsmap.h"
#include "mds_client.h"
#include "super.h"

#define CEPH_MDS_IS_READY(i, ignore_laggy) …

static int __mdsmap_get_random_mds(struct ceph_mdsmap *m, bool ignore_laggy)
{ … }

/*
 * choose a random mds that is "up" (i.e. has a state > 0), or -1.
 */
int ceph_mdsmap_get_random_mds(struct ceph_mdsmap *m)
{ … }

#define __decode_and_drop_type(p, end, type, bad) …

#define __decode_and_drop_set(p, end, type, bad) …

#define __decode_and_drop_map(p, end, ktype, vtype, bad) …


static int __decode_and_drop_compat_set(void **p, void* end)
{ … }

/*
 * Decode an MDS map
 *
 * Ignore any fields we don't care about (there are quite a few of
 * them).
 */
struct ceph_mdsmap *ceph_mdsmap_decode(struct ceph_mds_client *mdsc, void **p,
				       void *end, bool msgr2)
{ … }

void ceph_mdsmap_destroy(struct ceph_mdsmap *m)
{ … }

bool ceph_mdsmap_is_cluster_available(struct ceph_mdsmap *m)
{ … }