1 /*
2  * CDDL HEADER START
3  *
4  * This file and its contents are supplied under the terms of the
5  * Common Development and Distribution License ("CDDL"), version 1.0.
6  * You may only use this file in accordance with the terms of version
7  * 1.0 of the CDDL.
8  *
9  * A full copy of the text of the CDDL should have accompanied this
10  * source.  A copy of the CDDL is also available via the Internet at
11  * http://www.illumos.org/license/CDDL.
12  *
13  * CDDL HEADER END
14  */
15 /*
16  * Copyright (c) 2014 by Delphix. All rights reserved.
17  */
18 #ifndef   _ZIO_PRIORITY_H
19 #define   _ZIO_PRIORITY_H
20 
21 #ifdef    __cplusplus
22 extern "C" {
23 #endif
24 
25 typedef enum zio_priority {
26           ZIO_PRIORITY_SYNC_READ,
27           ZIO_PRIORITY_SYNC_WRITE,      /* ZIL */
28           ZIO_PRIORITY_ASYNC_READ,      /* prefetch */
29           ZIO_PRIORITY_ASYNC_WRITE,     /* spa_sync() */
30           ZIO_PRIORITY_SCRUB,           /* asynchronous scrub/resilver reads */
31           ZIO_PRIORITY_TRIM,            /* free requests used for TRIM */
32           ZIO_PRIORITY_NUM_QUEUEABLE,
33 
34           ZIO_PRIORITY_NOW              /* non-queued i/os (e.g. free) */
35 } zio_priority_t;
36 
37 #ifdef    __cplusplus
38 }
39 #endif
40 
41 #endif    /* _ZIO_PRIORITY_H */
42