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ceph: rewrite msgpool using mempool_t

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Since we don't need to maintain large pools of messages, we can just
use the standard mempool_t.  We maintain a msgpool 'wrapper' because we
need the mempool_t* in the alloc function, and mempool gives us only
pool_data.

Signed-off-by: Sage Weil <sage@newdream.net>
This commit is contained in:
Sage Weil
2010-04-01 15:23:14 -07:00
parent 640ef79d27
commit d52f847a84
2 changed files with 30 additions and 152 deletions
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8
fs/ceph/msgpool.h
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@@ -1,6 +1,7 @@
#ifndef _FS_CEPH_MSGPOOL
#define _FS_CEPH_MSGPOOL
#include <linux/mempool.h>
#include "messenger.h"
/*
@@ -8,18 +9,13 @@
* avoid unexpected OOM conditions.
*/
struct ceph_msgpool {
spinlock_t lock;
mempool_t *pool;
int front_len; /* preallocated payload size */
struct list_head msgs; /* msgs in the pool; each has 1 ref */
int num, min; /* cur, min # msgs in the pool */
bool blocking;
wait_queue_head_t wait;
};
extern int ceph_msgpool_init(struct ceph_msgpool *pool,
int front_len, int size, bool blocking);
extern void ceph_msgpool_destroy(struct ceph_msgpool *pool);
extern int ceph_msgpool_resv(struct ceph_msgpool *, int delta);
extern struct ceph_msg *ceph_msgpool_get(struct ceph_msgpool *,
int front_len);
extern void ceph_msgpool_put(struct ceph_msgpool *, struct ceph_msg *);