blob: dd65a6438131c5f08cbe97085b6b1ba3f671076d [file] [log] [blame]
#include "ceph_debug.h"
#include <linux/err.h>
#include <linux/sched.h>
#include <linux/types.h>
#include <linux/vmalloc.h>
#include "msgpool.h"
static void *alloc_fn(gfp_t gfp_mask, void *arg)
struct ceph_msgpool *pool = arg;
void *p;
p = ceph_msg_new(0, pool->front_len, gfp_mask);
if (!p)
pr_err("msgpool %s alloc failed\n", pool->name);
return p;
static void free_fn(void *element, void *arg)
int ceph_msgpool_init(struct ceph_msgpool *pool,
int front_len, int size, bool blocking, const char *name)
pool->front_len = front_len;
pool->pool = mempool_create(size, alloc_fn, free_fn, pool);
if (!pool->pool)
return -ENOMEM;
pool->name = name;
return 0;
void ceph_msgpool_destroy(struct ceph_msgpool *pool)
struct ceph_msg *ceph_msgpool_get(struct ceph_msgpool *pool,
int front_len)
if (front_len > pool->front_len) {
pr_err("msgpool_get pool %s need front %d, pool size is %d\n",
pool->name, front_len, pool->front_len);
/* try to alloc a fresh message */
return ceph_msg_new(0, front_len, GFP_NOFS);
return mempool_alloc(pool->pool, GFP_NOFS);
void ceph_msgpool_put(struct ceph_msgpool *pool, struct ceph_msg *msg)
/* reset msg front_len; user may have changed it */
msg->front.iov_len = pool->front_len;
msg->hdr.front_len = cpu_to_le32(pool->front_len);
kref_init(&msg->kref); /* retake single ref */