4391 panic system rather than corrupting pool if we hit bug 4390
Reviewed by: Adam Leventhal <ahl@delphix.com>
Reviewed by: Christopher Siden <christopher.siden@delphix.com>
Approved by: Gordon Ross <gwr@nexenta.com>

          --- old/usr/src/uts/common/fs/zfs/sys/zfs_debug.h
          +++ new/usr/src/uts/common/fs/zfs/sys/zfs_debug.h

   1    1  /*
   2    2   * CDDL HEADER START
   3    3   *
   4    4   * The contents of this file are subject to the terms of the
   5    5   * Common Development and Distribution License (the "License").
   6    6   * You may not use this file except in compliance with the License.
   7    7   *
   8    8   * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9    9   * or http://www.opensolaris.org/os/licensing.
  10   10   * See the License for the specific language governing permissions
  11   11   * and limitations under the License.
  12   12   *

  13   13   * When distributing Covered Code, include this CDDL HEADER in each
  14   14   * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15   15   * If applicable, add the following below this CDDL HEADER, with the
  16   16   * fields enclosed by brackets "[]" replaced with your own identifying
  17   17   * information: Portions Copyright [yyyy] [name of copyright owner]
  18   18   *
  19   19   * CDDL HEADER END
  20   20   */
  21   21  /*
  22   22   * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
  23      - * Copyright (c) 2012, 2016 by Delphix. All rights reserved.
       23 + * Copyright (c) 2012, 2014 by Delphix. All rights reserved.
  24   24   */
  25   25  
  26   26  #ifndef _SYS_ZFS_DEBUG_H
  27   27  #define _SYS_ZFS_DEBUG_H
  28   28  
  29   29  #ifdef  __cplusplus
  30   30  extern "C" {
  31   31  #endif
  32   32  
  33   33  #ifndef TRUE

  34   34  #define TRUE 1
  35   35  #endif
  36   36  
  37   37  #ifndef FALSE
  38   38  #define FALSE 0
  39   39  #endif
  40   40  
  41   41  /*
  42   42   * ZFS debugging
  43   43   */
  44   44  
  45   45  #if defined(DEBUG) || !defined(_KERNEL)
  46   46  #define ZFS_DEBUG
  47   47  #endif
  48   48  
  49   49  extern int zfs_flags;
  50   50  extern boolean_t zfs_recover;
  51   51  extern boolean_t zfs_free_leak_on_eio;

  52   52  
  53   53  #define ZFS_DEBUG_DPRINTF               (1 << 0)
  54   54  #define ZFS_DEBUG_DBUF_VERIFY           (1 << 1)
  55   55  #define ZFS_DEBUG_DNODE_VERIFY          (1 << 2)
  56   56  #define ZFS_DEBUG_SNAPNAMES             (1 << 3)
  57   57  #define ZFS_DEBUG_MODIFY                (1 << 4)
  58   58  #define ZFS_DEBUG_SPA                   (1 << 5)
  59   59  #define ZFS_DEBUG_ZIO_FREE              (1 << 6)
  60   60  #define ZFS_DEBUG_HISTOGRAM_VERIFY      (1 << 7)
  61   61  #define ZFS_DEBUG_METASLAB_VERIFY       (1 << 8)
  62      -#define ZFS_DEBUG_INDIRECT_REMAP        (1 << 9)
  63   62  
  64   63  #ifdef ZFS_DEBUG
  65   64  extern void __dprintf(const char *file, const char *func,
  66   65      int line, const char *fmt, ...);
  67   66  #define dprintf(...) \
  68   67          if (zfs_flags & ZFS_DEBUG_DPRINTF) \
  69   68                  __dprintf(__FILE__, __func__, __LINE__, __VA_ARGS__)
  70   69  #else
  71   70  #define dprintf(...) ((void)0)
  72   71  #endif /* ZFS_DEBUG */

  73   72  
  74   73  extern void zfs_panic_recover(const char *fmt, ...);
  75   74  
  76   75  typedef struct zfs_dbgmsg {
  77   76          list_node_t zdm_node;
  78   77          time_t zdm_timestamp;
  79   78          char zdm_msg[1]; /* variable length allocation */
  80   79  } zfs_dbgmsg_t;
  81   80  
  82   81  extern void zfs_dbgmsg_init(void);
  83   82  extern void zfs_dbgmsg_fini(void);
  84   83  extern void zfs_dbgmsg(const char *fmt, ...);
  85   84  extern void zfs_dbgmsg_print(const char *tag);
  86   85  
  87   86  #ifndef _KERNEL
  88   87  extern int dprintf_find_string(const char *string);
  89   88  #endif
  90   89  
  91   90  #ifdef  __cplusplus
  92   91  }
  93   92  #endif
  94   93  
  95   94  #endif  /* _SYS_ZFS_DEBUG_H */

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