Revision 45c6ceb547ad2d98215351974a4686bf8cb13e14 authored by Sage Weil on 11 May 2010, 22:01:51 UTC, committed by Sage Weil on 11 May 2010, 22:17:40 UTC
We shouldn't leak any prior memory contents to other parties. And random data, particularly in the 'version' field, can cause problems down the line. Signed-off-by: Sage Weil <sage@newdream.net>
1 parent 9abf82b
msgpool.h
#ifndef _FS_CEPH_MSGPOOL
#define _FS_CEPH_MSGPOOL
#include "messenger.h"
/*
* we use memory pools for preallocating messages we may receive, to
* avoid unexpected OOM conditions.
*/
struct ceph_msgpool {
spinlock_t lock;
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 *);
#endif
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