include/sys/zio_priority.h

   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, 2016 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 /*
  26  * NOTE: PLEASE UPDATE THE ENUM STRINGS IN zfs_valstr.c IF YOU ADD ANOTHER
  27  * VALUE.
  28  */
  29 typedef enum zio_priority {
  30         ZIO_PRIORITY_SYNC_READ,
  31         ZIO_PRIORITY_SYNC_WRITE,        /* ZIL */
  32         ZIO_PRIORITY_ASYNC_READ,        /* prefetch */
  33         ZIO_PRIORITY_ASYNC_WRITE,       /* spa_sync() */
  34         ZIO_PRIORITY_SCRUB,             /* asynchronous scrub/resilver reads */
  35         ZIO_PRIORITY_REMOVAL,           /* reads/writes for vdev removal */
  36         ZIO_PRIORITY_INITIALIZING,      /* initializing I/O */
  37         ZIO_PRIORITY_TRIM,              /* trim I/O (discard) */
  38         ZIO_PRIORITY_REBUILD,           /* reads/writes for vdev rebuild */
  39         ZIO_PRIORITY_NUM_QUEUEABLE,
  40         ZIO_PRIORITY_NOW,               /* non-queued i/os (e.g. free) */
  41 } zio_priority_t;
  42
  43 #ifdef  __cplusplus
  44 }
  45 #endif
  46
  47 #endif  /* _ZIO_PRIORITY_H */