mirror of
https://git.proxmox.com/git/mirror_zfs.git
synced 2024-11-18 10:21:01 +03:00
1d3ba0bf01
The commit replaces all findings of the link: http://www.opensolaris.org/os/licensing with this one: https://opensource.org/licenses/CDDL-1.0 Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Tino Reichardt <milky-zfs@mcmilk.de> Closes #13619
89 lines
2.7 KiB
C
89 lines
2.7 KiB
C
/*
|
|
* CDDL HEADER START
|
|
*
|
|
* The contents of this file are subject to the terms of the
|
|
* Common Development and Distribution License (the "License").
|
|
* You may not use this file except in compliance with the License.
|
|
*
|
|
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
|
|
* or https://opensource.org/licenses/CDDL-1.0.
|
|
* See the License for the specific language governing permissions
|
|
* and limitations under the License.
|
|
*
|
|
* When distributing Covered Code, include this CDDL HEADER in each
|
|
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
|
|
* If applicable, add the following below this CDDL HEADER, with the
|
|
* fields enclosed by brackets "[]" replaced with your own identifying
|
|
* information: Portions Copyright [yyyy] [name of copyright owner]
|
|
*
|
|
* CDDL HEADER END
|
|
*/
|
|
/*
|
|
* Copyright 2009 Sun Microsystems, Inc. All rights reserved.
|
|
* Use is subject to license terms.
|
|
*/
|
|
|
|
/*
|
|
* Copyright (c) 2014, 2017 by Delphix. All rights reserved.
|
|
*/
|
|
|
|
#ifndef _DMU_ZFETCH_H
|
|
#define _DMU_ZFETCH_H
|
|
|
|
#include <sys/zfs_context.h>
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
extern unsigned long zfetch_array_rd_sz;
|
|
|
|
struct dnode; /* so we can reference dnode */
|
|
|
|
typedef struct zfetch {
|
|
kmutex_t zf_lock; /* protects zfetch structure */
|
|
list_t zf_stream; /* list of zstream_t's */
|
|
struct dnode *zf_dnode; /* dnode that owns this zfetch */
|
|
int zf_numstreams; /* number of zstream_t's */
|
|
} zfetch_t;
|
|
|
|
typedef struct zstream {
|
|
uint64_t zs_blkid; /* expect next access at this blkid */
|
|
unsigned int zs_pf_dist; /* data prefetch distance in bytes */
|
|
unsigned int zs_ipf_dist; /* L1 prefetch distance in bytes */
|
|
uint64_t zs_pf_start; /* first data block to prefetch */
|
|
uint64_t zs_pf_end; /* data block to prefetch up to */
|
|
uint64_t zs_ipf_start; /* first data block to prefetch L1 */
|
|
uint64_t zs_ipf_end; /* data block to prefetch L1 up to */
|
|
|
|
list_node_t zs_node; /* link for zf_stream */
|
|
hrtime_t zs_atime; /* time last prefetch issued */
|
|
zfetch_t *zs_fetch; /* parent fetch */
|
|
boolean_t zs_missed; /* stream saw cache misses */
|
|
boolean_t zs_more; /* need more distant prefetch */
|
|
zfs_refcount_t zs_callers; /* number of pending callers */
|
|
/*
|
|
* Number of stream references: dnode, callers and pending blocks.
|
|
* The stream memory is freed when the number returns to zero.
|
|
*/
|
|
zfs_refcount_t zs_refs;
|
|
} zstream_t;
|
|
|
|
void zfetch_init(void);
|
|
void zfetch_fini(void);
|
|
|
|
void dmu_zfetch_init(zfetch_t *, struct dnode *);
|
|
void dmu_zfetch_fini(zfetch_t *);
|
|
zstream_t *dmu_zfetch_prepare(zfetch_t *, uint64_t, uint64_t, boolean_t,
|
|
boolean_t);
|
|
void dmu_zfetch_run(zstream_t *, boolean_t, boolean_t);
|
|
void dmu_zfetch(zfetch_t *, uint64_t, uint64_t, boolean_t, boolean_t,
|
|
boolean_t);
|
|
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* _DMU_ZFETCH_H */
|