^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /* -*- mode: c; c-basic-offset: 8; -*-
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * vim: noexpandtab sw=8 ts=8 sts=0:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * stack_o2cb.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Code which interfaces ocfs2 with the o2cb stack.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * Copyright (C) 2007 Oracle. All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/crc32.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) /* Needed for AOP_TRUNCATED_PAGE in mlog_errno() */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/fs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include "cluster/masklog.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include "cluster/nodemanager.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include "cluster/heartbeat.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include "cluster/tcp.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include "stackglue.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) struct o2dlm_private {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) struct dlm_eviction_cb op_eviction_cb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) static struct ocfs2_stack_plugin o2cb_stack;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) /* These should be identical */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #if (DLM_LOCK_IV != LKM_IVMODE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) # error Lock modes do not match
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #if (DLM_LOCK_NL != LKM_NLMODE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) # error Lock modes do not match
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #if (DLM_LOCK_CR != LKM_CRMODE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) # error Lock modes do not match
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) #if (DLM_LOCK_CW != LKM_CWMODE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) # error Lock modes do not match
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) #if (DLM_LOCK_PR != LKM_PRMODE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) # error Lock modes do not match
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) #if (DLM_LOCK_PW != LKM_PWMODE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) # error Lock modes do not match
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) #if (DLM_LOCK_EX != LKM_EXMODE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) # error Lock modes do not match
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) static inline int mode_to_o2dlm(int mode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) BUG_ON(mode > LKM_MAXMODE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) return mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) #define map_flag(_generic, _o2dlm) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) if (flags & (_generic)) { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) flags &= ~(_generic); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) o2dlm_flags |= (_o2dlm); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) static int flags_to_o2dlm(u32 flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) int o2dlm_flags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) map_flag(DLM_LKF_NOQUEUE, LKM_NOQUEUE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) map_flag(DLM_LKF_CANCEL, LKM_CANCEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) map_flag(DLM_LKF_CONVERT, LKM_CONVERT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) map_flag(DLM_LKF_VALBLK, LKM_VALBLK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) map_flag(DLM_LKF_IVVALBLK, LKM_INVVALBLK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) map_flag(DLM_LKF_ORPHAN, LKM_ORPHAN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) map_flag(DLM_LKF_FORCEUNLOCK, LKM_FORCE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) map_flag(DLM_LKF_TIMEOUT, LKM_TIMEOUT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) map_flag(DLM_LKF_LOCAL, LKM_LOCAL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) /* map_flag() should have cleared every flag passed in */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) BUG_ON(flags != 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) return o2dlm_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) #undef map_flag
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) * Map an o2dlm status to standard errno values.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) * o2dlm only uses a handful of these, and returns even fewer to the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) * caller. Still, we try to assign sane values to each error.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) * The following value pairs have special meanings to dlmglue, thus
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) * the right hand side needs to stay unique - never duplicate the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) * mapping elsewhere in the table!
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) * DLM_NORMAL: 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) * DLM_NOTQUEUED: -EAGAIN
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) * DLM_CANCELGRANT: -EBUSY
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) * DLM_CANCEL: -DLM_ECANCEL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) /* Keep in sync with dlmapi.h */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) static int status_map[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) [DLM_NORMAL] = 0, /* Success */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) [DLM_GRANTED] = -EINVAL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) [DLM_DENIED] = -EACCES,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) [DLM_DENIED_NOLOCKS] = -EACCES,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) [DLM_WORKING] = -EACCES,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) [DLM_BLOCKED] = -EINVAL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) [DLM_BLOCKED_ORPHAN] = -EINVAL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) [DLM_DENIED_GRACE_PERIOD] = -EACCES,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) [DLM_SYSERR] = -ENOMEM, /* It is what it is */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) [DLM_NOSUPPORT] = -EPROTO,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) [DLM_CANCELGRANT] = -EBUSY, /* Cancel after grant */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) [DLM_IVLOCKID] = -EINVAL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) [DLM_SYNC] = -EINVAL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) [DLM_BADTYPE] = -EINVAL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) [DLM_BADRESOURCE] = -EINVAL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) [DLM_MAXHANDLES] = -ENOMEM,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) [DLM_NOCLINFO] = -EINVAL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) [DLM_NOLOCKMGR] = -EINVAL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) [DLM_NOPURGED] = -EINVAL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) [DLM_BADARGS] = -EINVAL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) [DLM_VOID] = -EINVAL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) [DLM_NOTQUEUED] = -EAGAIN, /* Trylock failed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) [DLM_IVBUFLEN] = -EINVAL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) [DLM_CVTUNGRANT] = -EPERM,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) [DLM_BADPARAM] = -EINVAL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) [DLM_VALNOTVALID] = -EINVAL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) [DLM_REJECTED] = -EPERM,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) [DLM_ABORT] = -EINVAL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) [DLM_CANCEL] = -DLM_ECANCEL, /* Successful cancel */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) [DLM_IVRESHANDLE] = -EINVAL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) [DLM_DEADLOCK] = -EDEADLK,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) [DLM_DENIED_NOASTS] = -EINVAL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) [DLM_FORWARD] = -EINVAL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) [DLM_TIMEOUT] = -ETIMEDOUT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) [DLM_IVGROUPID] = -EINVAL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) [DLM_VERS_CONFLICT] = -EOPNOTSUPP,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) [DLM_BAD_DEVICE_PATH] = -ENOENT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) [DLM_NO_DEVICE_PERMISSION] = -EPERM,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) [DLM_NO_CONTROL_DEVICE] = -ENOENT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) [DLM_RECOVERING] = -ENOTCONN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) [DLM_MIGRATING] = -ERESTART,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) [DLM_MAXSTATS] = -EINVAL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) static int dlm_status_to_errno(enum dlm_status status)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) BUG_ON(status < 0 || status >= ARRAY_SIZE(status_map));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) return status_map[status];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) static void o2dlm_lock_ast_wrapper(void *astarg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) struct ocfs2_dlm_lksb *lksb = astarg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) lksb->lksb_conn->cc_proto->lp_lock_ast(lksb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) static void o2dlm_blocking_ast_wrapper(void *astarg, int level)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) struct ocfs2_dlm_lksb *lksb = astarg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) lksb->lksb_conn->cc_proto->lp_blocking_ast(lksb, level);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) static void o2dlm_unlock_ast_wrapper(void *astarg, enum dlm_status status)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) struct ocfs2_dlm_lksb *lksb = astarg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) int error = dlm_status_to_errno(status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) * In o2dlm, you can get both the lock_ast() for the lock being
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) * granted and the unlock_ast() for the CANCEL failing. A
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) * successful cancel sends DLM_NORMAL here. If the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) * lock grant happened before the cancel arrived, you get
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) * DLM_CANCELGRANT.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) * There's no need for the double-ast. If we see DLM_CANCELGRANT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) * we just ignore it. We expect the lock_ast() to handle the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) * granted lock.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) if (status == DLM_CANCELGRANT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) lksb->lksb_conn->cc_proto->lp_unlock_ast(lksb, error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) static int o2cb_dlm_lock(struct ocfs2_cluster_connection *conn,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) int mode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) struct ocfs2_dlm_lksb *lksb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) u32 flags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) void *name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) unsigned int namelen)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) enum dlm_status status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) int o2dlm_mode = mode_to_o2dlm(mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) int o2dlm_flags = flags_to_o2dlm(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) status = dlmlock(conn->cc_lockspace, o2dlm_mode, &lksb->lksb_o2dlm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) o2dlm_flags, name, namelen,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) o2dlm_lock_ast_wrapper, lksb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) o2dlm_blocking_ast_wrapper);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) ret = dlm_status_to_errno(status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) static int o2cb_dlm_unlock(struct ocfs2_cluster_connection *conn,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) struct ocfs2_dlm_lksb *lksb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) u32 flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) enum dlm_status status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) int o2dlm_flags = flags_to_o2dlm(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) status = dlmunlock(conn->cc_lockspace, &lksb->lksb_o2dlm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) o2dlm_flags, o2dlm_unlock_ast_wrapper, lksb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) ret = dlm_status_to_errno(status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) static int o2cb_dlm_lock_status(struct ocfs2_dlm_lksb *lksb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) return dlm_status_to_errno(lksb->lksb_o2dlm.status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) * o2dlm aways has a "valid" LVB. If the dlm loses track of the LVB
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) * contents, it will zero out the LVB. Thus the caller can always trust
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) * the contents.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) static int o2cb_dlm_lvb_valid(struct ocfs2_dlm_lksb *lksb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) static void *o2cb_dlm_lvb(struct ocfs2_dlm_lksb *lksb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) return (void *)(lksb->lksb_o2dlm.lvb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) static void o2cb_dump_lksb(struct ocfs2_dlm_lksb *lksb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) dlm_print_one_lock(lksb->lksb_o2dlm.lockid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) * Check if this node is heartbeating and is connected to all other
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) * heartbeating nodes.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) static int o2cb_cluster_check(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) u8 node_num;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) unsigned long hbmap[BITS_TO_LONGS(O2NM_MAX_NODES)];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) unsigned long netmap[BITS_TO_LONGS(O2NM_MAX_NODES)];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) node_num = o2nm_this_node();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) if (node_num == O2NM_MAX_NODES) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) printk(KERN_ERR "o2cb: This node has not been configured.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) * o2dlm expects o2net sockets to be created. If not, then
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) * dlm_join_domain() fails with a stack of errors which are both cryptic
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) * and incomplete. The idea here is to detect upfront whether we have
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) * managed to connect to all nodes or not. If not, then list the nodes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) * to allow the user to check the configuration (incorrect IP, firewall,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) * etc.) Yes, this is racy. But its not the end of the world.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) #define O2CB_MAP_STABILIZE_COUNT 60
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) for (i = 0; i < O2CB_MAP_STABILIZE_COUNT; ++i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) o2hb_fill_node_map(hbmap, sizeof(hbmap));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) if (!test_bit(node_num, hbmap)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) printk(KERN_ERR "o2cb: %s heartbeat has not been "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) "started.\n", (o2hb_global_heartbeat_active() ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) "Global" : "Local"));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) o2net_fill_node_map(netmap, sizeof(netmap));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) /* Force set the current node to allow easy compare */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) set_bit(node_num, netmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) if (!memcmp(hbmap, netmap, sizeof(hbmap)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) if (i < O2CB_MAP_STABILIZE_COUNT - 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) msleep(1000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) printk(KERN_ERR "o2cb: This node could not connect to nodes:");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) i = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) while ((i = find_next_bit(hbmap, O2NM_MAX_NODES,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) i + 1)) < O2NM_MAX_NODES) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) if (!test_bit(i, netmap))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) printk(" %u", i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) printk(".\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) return -ENOTCONN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) * Called from the dlm when it's about to evict a node. This is how the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) * classic stack signals node death.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) static void o2dlm_eviction_cb(int node_num, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) struct ocfs2_cluster_connection *conn = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) printk(KERN_NOTICE "o2cb: o2dlm has evicted node %d from domain %.*s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) node_num, conn->cc_namelen, conn->cc_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) conn->cc_recovery_handler(node_num, conn->cc_recovery_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) static int o2cb_cluster_connect(struct ocfs2_cluster_connection *conn)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) int rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) u32 dlm_key;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) struct dlm_ctxt *dlm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) struct o2dlm_private *priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) struct dlm_protocol_version fs_version;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) BUG_ON(conn == NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) BUG_ON(conn->cc_proto == NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) /* Ensure cluster stack is up and all nodes are connected */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) rc = o2cb_cluster_check();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) printk(KERN_ERR "o2cb: Cluster check failed. Fix errors "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) "before retrying.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) priv = kzalloc(sizeof(struct o2dlm_private), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) if (!priv) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) rc = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) goto out_free;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) /* This just fills the structure in. It is safe to pass conn. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) dlm_setup_eviction_cb(&priv->op_eviction_cb, o2dlm_eviction_cb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) conn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) conn->cc_private = priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) /* used by the dlm code to make message headers unique, each
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) * node in this domain must agree on this. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) dlm_key = crc32_le(0, conn->cc_name, conn->cc_namelen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) fs_version.pv_major = conn->cc_version.pv_major;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) fs_version.pv_minor = conn->cc_version.pv_minor;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) dlm = dlm_register_domain(conn->cc_name, dlm_key, &fs_version);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) if (IS_ERR(dlm)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) rc = PTR_ERR(dlm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) mlog_errno(rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) goto out_free;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) conn->cc_version.pv_major = fs_version.pv_major;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) conn->cc_version.pv_minor = fs_version.pv_minor;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) conn->cc_lockspace = dlm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) dlm_register_eviction_cb(dlm, &priv->op_eviction_cb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) out_free:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) kfree(conn->cc_private);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) static int o2cb_cluster_disconnect(struct ocfs2_cluster_connection *conn)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) struct dlm_ctxt *dlm = conn->cc_lockspace;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) struct o2dlm_private *priv = conn->cc_private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) dlm_unregister_eviction_cb(&priv->op_eviction_cb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) conn->cc_private = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) kfree(priv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) dlm_unregister_domain(dlm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) conn->cc_lockspace = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) static int o2cb_cluster_this_node(struct ocfs2_cluster_connection *conn,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) unsigned int *node)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) int node_num;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) node_num = o2nm_this_node();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) if (node_num == O2NM_INVALID_NODE_NUM)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) return -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) if (node_num >= O2NM_MAX_NODES)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) return -EOVERFLOW;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) *node = node_num;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) static struct ocfs2_stack_operations o2cb_stack_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) .connect = o2cb_cluster_connect,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) .disconnect = o2cb_cluster_disconnect,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) .this_node = o2cb_cluster_this_node,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) .dlm_lock = o2cb_dlm_lock,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) .dlm_unlock = o2cb_dlm_unlock,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) .lock_status = o2cb_dlm_lock_status,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) .lvb_valid = o2cb_dlm_lvb_valid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) .lock_lvb = o2cb_dlm_lvb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) .dump_lksb = o2cb_dump_lksb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) static struct ocfs2_stack_plugin o2cb_stack = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) .sp_name = "o2cb",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) .sp_ops = &o2cb_stack_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) .sp_owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) static int __init o2cb_stack_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) return ocfs2_stack_glue_register(&o2cb_stack);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) static void __exit o2cb_stack_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) ocfs2_stack_glue_unregister(&o2cb_stack);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) MODULE_AUTHOR("Oracle");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) MODULE_DESCRIPTION("ocfs2 driver for the classic o2cb stack");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) module_init(o2cb_stack_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) module_exit(o2cb_stack_exit);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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