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Diffstat (limited to 'fs/ocfs2/cluster/heartbeat.c')
-rw-r--r--fs/ocfs2/cluster/heartbeat.c1088
1 files changed, 477 insertions, 611 deletions
diff --git a/fs/ocfs2/cluster/heartbeat.c b/fs/ocfs2/cluster/heartbeat.c
index 5c1c864e81cc..724350925aff 100644
--- a/fs/ocfs2/cluster/heartbeat.c
+++ b/fs/ocfs2/cluster/heartbeat.c
@@ -1,24 +1,9 @@
-/* -*- mode: c; c-basic-offset: 8; -*-
- * vim: noexpandtab sw=8 ts=8 sts=0:
- *
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
* Copyright (C) 2004, 2005 Oracle. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public
- * License along with this program; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 021110-1307, USA.
*/
+#include "linux/kstrtox.h"
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/jiffies.h>
@@ -35,7 +20,8 @@
#include <linux/time.h>
#include <linux/debugfs.h>
#include <linux/slab.h>
-
+#include <linux/bitmap.h>
+#include <linux/ktime.h>
#include "heartbeat.h"
#include "tcp.h"
#include "nodemanager.h"
@@ -105,10 +91,6 @@ static struct o2hb_debug_buf *o2hb_db_failedregions;
#define O2HB_DEBUG_REGION_PINNED "pinned"
static struct dentry *o2hb_debug_dir;
-static struct dentry *o2hb_debug_livenodes;
-static struct dentry *o2hb_debug_liveregions;
-static struct dentry *o2hb_debug_quorumregions;
-static struct dentry *o2hb_debug_failedregions;
static LIST_HEAD(o2hb_all_regions);
@@ -118,21 +100,19 @@ static struct o2hb_callback {
static struct o2hb_callback *hbcall_from_type(enum o2hb_callback_type type);
-#define O2HB_DEFAULT_BLOCK_BITS 9
-
enum o2hb_heartbeat_modes {
O2HB_HEARTBEAT_LOCAL = 0,
O2HB_HEARTBEAT_GLOBAL,
O2HB_HEARTBEAT_NUM_MODES,
};
-char *o2hb_heartbeat_mode_desc[O2HB_HEARTBEAT_NUM_MODES] = {
- "local", /* O2HB_HEARTBEAT_LOCAL */
- "global", /* O2HB_HEARTBEAT_GLOBAL */
+static const char *o2hb_heartbeat_mode_desc[O2HB_HEARTBEAT_NUM_MODES] = {
+ "local", /* O2HB_HEARTBEAT_LOCAL */
+ "global", /* O2HB_HEARTBEAT_GLOBAL */
};
unsigned int o2hb_dead_threshold = O2HB_DEFAULT_DEAD_THRESHOLD;
-unsigned int o2hb_heartbeat_mode = O2HB_HEARTBEAT_LOCAL;
+static unsigned int o2hb_heartbeat_mode = O2HB_HEARTBEAT_LOCAL;
/*
* o2hb_dependent_users tracks the number of registered callbacks that depend
@@ -140,7 +120,7 @@ unsigned int o2hb_heartbeat_mode = O2HB_HEARTBEAT_LOCAL;
* However only o2dlm depends on the heartbeat. It does not want the heartbeat
* to stop while a dlm domain is still active.
*/
-unsigned int o2hb_dependent_users;
+static unsigned int o2hb_dependent_users;
/*
* In global heartbeat mode, all regions are pinned if there are one or more
@@ -218,7 +198,8 @@ struct o2hb_region {
unsigned hr_unclean_stop:1,
hr_aborted_start:1,
hr_item_pinned:1,
- hr_item_dropped:1;
+ hr_item_dropped:1,
+ hr_node_deleted:1;
/* protected by the hr_callback_sem */
struct task_struct *hr_task;
@@ -233,7 +214,7 @@ struct o2hb_region {
unsigned int hr_num_pages;
struct page **hr_slot_data;
- struct block_device *hr_bdev;
+ struct file *hr_bdev_file;
struct o2hb_disk_slot *hr_slots;
/* live node map of this region */
@@ -241,10 +222,6 @@ struct o2hb_region {
unsigned int hr_region_num;
struct dentry *hr_debug_dir;
- struct dentry *hr_debug_livenodes;
- struct dentry *hr_debug_regnum;
- struct dentry *hr_debug_elapsed_time;
- struct dentry *hr_debug_pinned;
struct o2hb_debug_buf *hr_db_livenodes;
struct o2hb_debug_buf *hr_db_regnum;
struct o2hb_debug_buf *hr_db_elapsed_time;
@@ -259,8 +236,6 @@ struct o2hb_region {
* (hr_steady_iterations == 0) within hr_unsteady_iterations */
atomic_t hr_unsteady_iterations;
- char hr_dev_name[BDEVNAME_SIZE];
-
unsigned int hr_timeout_ms;
/* randomized as the region goes up and down so that a node
@@ -270,48 +245,65 @@ struct o2hb_region {
struct delayed_work hr_write_timeout_work;
unsigned long hr_last_timeout_start;
+ /* negotiate timer, used to negotiate extending hb timeout. */
+ struct delayed_work hr_nego_timeout_work;
+ unsigned long hr_nego_node_bitmap[BITS_TO_LONGS(O2NM_MAX_NODES)];
+
/* Used during o2hb_check_slot to hold a copy of the block
* being checked because we temporarily have to zero out the
* crc field. */
struct o2hb_disk_heartbeat_block *hr_tmp_block;
+
+ /* Message key for negotiate timeout message. */
+ unsigned int hr_key;
+ struct list_head hr_handler_list;
+
+ /* last hb status, 0 for success, other value for error. */
+ int hr_last_hb_status;
};
+static inline struct block_device *reg_bdev(struct o2hb_region *reg)
+{
+ return reg->hr_bdev_file ? file_bdev(reg->hr_bdev_file) : NULL;
+}
+
struct o2hb_bio_wait_ctxt {
atomic_t wc_num_reqs;
struct completion wc_io_complete;
int wc_error;
};
-static int o2hb_pop_count(void *map, int count)
-{
- int i = -1, pop = 0;
+#define O2HB_NEGO_TIMEOUT_MS (O2HB_MAX_WRITE_TIMEOUT_MS/2)
- while ((i = find_next_bit(map, count, i + 1)) < count)
- pop++;
- return pop;
-}
+enum {
+ O2HB_NEGO_TIMEOUT_MSG = 1,
+ O2HB_NEGO_APPROVE_MSG = 2,
+};
+
+struct o2hb_nego_msg {
+ u8 node_num;
+};
static void o2hb_write_timeout(struct work_struct *work)
{
int failed, quorum;
- unsigned long flags;
struct o2hb_region *reg =
container_of(work, struct o2hb_region,
hr_write_timeout_work.work);
- mlog(ML_ERROR, "Heartbeat write timeout to device %s after %u "
- "milliseconds\n", reg->hr_dev_name,
+ mlog(ML_ERROR, "Heartbeat write timeout to device %pg after %u "
+ "milliseconds\n", reg_bdev(reg),
jiffies_to_msecs(jiffies - reg->hr_last_timeout_start));
if (o2hb_global_heartbeat_active()) {
- spin_lock_irqsave(&o2hb_live_lock, flags);
+ spin_lock(&o2hb_live_lock);
if (test_bit(reg->hr_region_num, o2hb_quorum_region_bitmap))
set_bit(reg->hr_region_num, o2hb_failed_region_bitmap);
- failed = o2hb_pop_count(&o2hb_failed_region_bitmap,
+ failed = bitmap_weight(o2hb_failed_region_bitmap,
O2NM_MAX_REGIONS);
- quorum = o2hb_pop_count(&o2hb_quorum_region_bitmap,
+ quorum = bitmap_weight(o2hb_quorum_region_bitmap,
O2NM_MAX_REGIONS);
- spin_unlock_irqrestore(&o2hb_live_lock, flags);
+ spin_unlock(&o2hb_live_lock);
mlog(ML_HEARTBEAT, "Number of regions %d, failed regions %d\n",
quorum, failed);
@@ -327,7 +319,7 @@ static void o2hb_write_timeout(struct work_struct *work)
o2quo_disk_timeout();
}
-static void o2hb_arm_write_timeout(struct o2hb_region *reg)
+static void o2hb_arm_timeout(struct o2hb_region *reg)
{
/* Arm writeout only after thread reaches steady state */
if (atomic_read(&reg->hr_steady_iterations) != 0)
@@ -342,14 +334,134 @@ static void o2hb_arm_write_timeout(struct o2hb_region *reg)
spin_unlock(&o2hb_live_lock);
}
cancel_delayed_work(&reg->hr_write_timeout_work);
- reg->hr_last_timeout_start = jiffies;
schedule_delayed_work(&reg->hr_write_timeout_work,
msecs_to_jiffies(O2HB_MAX_WRITE_TIMEOUT_MS));
+
+ cancel_delayed_work(&reg->hr_nego_timeout_work);
+ /* negotiate timeout must be less than write timeout. */
+ schedule_delayed_work(&reg->hr_nego_timeout_work,
+ msecs_to_jiffies(O2HB_NEGO_TIMEOUT_MS));
+ bitmap_zero(reg->hr_nego_node_bitmap, O2NM_MAX_NODES);
}
-static void o2hb_disarm_write_timeout(struct o2hb_region *reg)
+static void o2hb_disarm_timeout(struct o2hb_region *reg)
{
cancel_delayed_work_sync(&reg->hr_write_timeout_work);
+ cancel_delayed_work_sync(&reg->hr_nego_timeout_work);
+}
+
+static int o2hb_send_nego_msg(int key, int type, u8 target)
+{
+ struct o2hb_nego_msg msg;
+ int status, ret;
+
+ msg.node_num = o2nm_this_node();
+again:
+ ret = o2net_send_message(type, key, &msg, sizeof(msg),
+ target, &status);
+
+ if (ret == -EAGAIN || ret == -ENOMEM) {
+ msleep(100);
+ goto again;
+ }
+
+ return ret;
+}
+
+static void o2hb_nego_timeout(struct work_struct *work)
+{
+ unsigned long live_node_bitmap[BITS_TO_LONGS(O2NM_MAX_NODES)];
+ int master_node, i, ret;
+ struct o2hb_region *reg;
+
+ reg = container_of(work, struct o2hb_region, hr_nego_timeout_work.work);
+ /* don't negotiate timeout if last hb failed since it is very
+ * possible io failed. Should let write timeout fence self.
+ */
+ if (reg->hr_last_hb_status)
+ return;
+
+ o2hb_fill_node_map(live_node_bitmap, O2NM_MAX_NODES);
+ /* lowest node as master node to make negotiate decision. */
+ master_node = find_first_bit(live_node_bitmap, O2NM_MAX_NODES);
+
+ if (master_node == o2nm_this_node()) {
+ if (!test_bit(master_node, reg->hr_nego_node_bitmap)) {
+ printk(KERN_NOTICE "o2hb: node %d hb write hung for %ds on region %s (%pg).\n",
+ o2nm_this_node(), O2HB_NEGO_TIMEOUT_MS/1000,
+ config_item_name(&reg->hr_item), reg_bdev(reg));
+ set_bit(master_node, reg->hr_nego_node_bitmap);
+ }
+ if (!bitmap_equal(reg->hr_nego_node_bitmap, live_node_bitmap,
+ O2NM_MAX_NODES)) {
+ /* check negotiate bitmap every second to do timeout
+ * approve decision.
+ */
+ schedule_delayed_work(&reg->hr_nego_timeout_work,
+ msecs_to_jiffies(1000));
+
+ return;
+ }
+
+ printk(KERN_NOTICE "o2hb: all nodes hb write hung, maybe region %s (%pg) is down.\n",
+ config_item_name(&reg->hr_item),
+ reg_bdev(reg));
+ /* approve negotiate timeout request. */
+ o2hb_arm_timeout(reg);
+
+ i = -1;
+ while ((i = find_next_bit(live_node_bitmap,
+ O2NM_MAX_NODES, i + 1)) < O2NM_MAX_NODES) {
+ if (i == master_node)
+ continue;
+
+ mlog(ML_HEARTBEAT, "send NEGO_APPROVE msg to node %d\n", i);
+ ret = o2hb_send_nego_msg(reg->hr_key,
+ O2HB_NEGO_APPROVE_MSG, i);
+ if (ret)
+ mlog(ML_ERROR, "send NEGO_APPROVE msg to node %d fail %d\n",
+ i, ret);
+ }
+ } else {
+ /* negotiate timeout with master node. */
+ printk(KERN_NOTICE "o2hb: node %d hb write hung for %ds on region %s (%pg), negotiate timeout with node %d.\n",
+ o2nm_this_node(), O2HB_NEGO_TIMEOUT_MS/1000, config_item_name(&reg->hr_item),
+ reg_bdev(reg), master_node);
+ ret = o2hb_send_nego_msg(reg->hr_key, O2HB_NEGO_TIMEOUT_MSG,
+ master_node);
+ if (ret)
+ mlog(ML_ERROR, "send NEGO_TIMEOUT msg to node %d fail %d\n",
+ master_node, ret);
+ }
+}
+
+static int o2hb_nego_timeout_handler(struct o2net_msg *msg, u32 len, void *data,
+ void **ret_data)
+{
+ struct o2hb_region *reg = data;
+ struct o2hb_nego_msg *nego_msg;
+
+ nego_msg = (struct o2hb_nego_msg *)msg->buf;
+ printk(KERN_NOTICE "o2hb: receive negotiate timeout message from node %d on region %s (%pg).\n",
+ nego_msg->node_num, config_item_name(&reg->hr_item),
+ reg_bdev(reg));
+ if (nego_msg->node_num < O2NM_MAX_NODES)
+ set_bit(nego_msg->node_num, reg->hr_nego_node_bitmap);
+ else
+ mlog(ML_ERROR, "got nego timeout message from bad node.\n");
+
+ return 0;
+}
+
+static int o2hb_nego_approve_handler(struct o2net_msg *msg, u32 len, void *data,
+ void **ret_data)
+{
+ struct o2hb_region *reg = data;
+
+ printk(KERN_NOTICE "o2hb: negotiate timeout approved by master node on region %s (%pg).\n",
+ config_item_name(&reg->hr_item), reg_bdev(reg));
+ o2hb_arm_timeout(reg);
+ return 0;
}
static inline void o2hb_bio_wait_init(struct o2hb_bio_wait_ctxt *wc)
@@ -373,21 +485,19 @@ static inline void o2hb_bio_wait_dec(struct o2hb_bio_wait_ctxt *wc,
}
}
-static void o2hb_wait_on_io(struct o2hb_region *reg,
- struct o2hb_bio_wait_ctxt *wc)
+static void o2hb_wait_on_io(struct o2hb_bio_wait_ctxt *wc)
{
o2hb_bio_wait_dec(wc, 1);
wait_for_completion(&wc->wc_io_complete);
}
-static void o2hb_bio_end_io(struct bio *bio,
- int error)
+static void o2hb_bio_end_io(struct bio *bio)
{
struct o2hb_bio_wait_ctxt *wc = bio->bi_private;
- if (error) {
- mlog(ML_ERROR, "IO Error %d\n", error);
- wc->wc_error = error;
+ if (bio->bi_status) {
+ mlog(ML_ERROR, "IO Error %d\n", bio->bi_status);
+ wc->wc_error = blk_status_to_errno(bio->bi_status);
}
o2hb_bio_wait_dec(wc, 1);
@@ -399,7 +509,7 @@ static void o2hb_bio_end_io(struct bio *bio,
static struct bio *o2hb_setup_one_bio(struct o2hb_region *reg,
struct o2hb_bio_wait_ctxt *wc,
unsigned int *current_slot,
- unsigned int max_slots)
+ unsigned int max_slots, blk_opf_t opf)
{
int len, current_page;
unsigned int vec_len, vec_start;
@@ -413,7 +523,7 @@ static struct bio *o2hb_setup_one_bio(struct o2hb_region *reg,
* GFP_KERNEL that the local node can get fenced. It would be
* nicest if we could pre-allocate these bios and avoid this
* all together. */
- bio = bio_alloc(GFP_ATOMIC, 16);
+ bio = bio_alloc(reg_bdev(reg), 16, opf, GFP_ATOMIC);
if (!bio) {
mlog(ML_ERROR, "Could not alloc slots BIO!\n");
bio = ERR_PTR(-ENOMEM);
@@ -421,18 +531,17 @@ static struct bio *o2hb_setup_one_bio(struct o2hb_region *reg,
}
/* Must put everything in 512 byte sectors for the bio... */
- bio->bi_sector = (reg->hr_start_block + cs) << (bits - 9);
- bio->bi_bdev = reg->hr_bdev;
+ bio->bi_iter.bi_sector = (reg->hr_start_block + cs) << (bits - 9);
bio->bi_private = wc;
bio->bi_end_io = o2hb_bio_end_io;
- vec_start = (cs << bits) % PAGE_CACHE_SIZE;
+ vec_start = (cs << bits) % PAGE_SIZE;
while(cs < max_slots) {
current_page = cs / spp;
page = reg->hr_slot_data[current_page];
- vec_len = min(PAGE_CACHE_SIZE - vec_start,
- (max_slots-cs) * (PAGE_CACHE_SIZE/spp) );
+ vec_len = min(PAGE_SIZE - vec_start,
+ (max_slots-cs) * (PAGE_SIZE/spp) );
mlog(ML_HB_BIO, "page %d, vec_len = %u, vec_start = %u\n",
current_page, vec_len, vec_start);
@@ -440,7 +549,7 @@ static struct bio *o2hb_setup_one_bio(struct o2hb_region *reg,
len = bio_add_page(bio, page, vec_len, vec_start);
if (len != vec_len) break;
- cs += vec_len / (PAGE_CACHE_SIZE/spp);
+ cs += vec_len / (PAGE_SIZE/spp);
vec_start = 0;
}
@@ -450,9 +559,10 @@ bail:
}
static int o2hb_read_slots(struct o2hb_region *reg,
+ unsigned int begin_slot,
unsigned int max_slots)
{
- unsigned int current_slot=0;
+ unsigned int current_slot = begin_slot;
int status;
struct o2hb_bio_wait_ctxt wc;
struct bio *bio;
@@ -460,7 +570,8 @@ static int o2hb_read_slots(struct o2hb_region *reg,
o2hb_bio_wait_init(&wc);
while(current_slot < max_slots) {
- bio = o2hb_setup_one_bio(reg, &wc, &current_slot, max_slots);
+ bio = o2hb_setup_one_bio(reg, &wc, &current_slot, max_slots,
+ REQ_OP_READ);
if (IS_ERR(bio)) {
status = PTR_ERR(bio);
mlog_errno(status);
@@ -468,13 +579,13 @@ static int o2hb_read_slots(struct o2hb_region *reg,
}
atomic_inc(&wc.wc_num_reqs);
- submit_bio(READ, bio);
+ submit_bio(bio);
}
status = 0;
bail_and_wait:
- o2hb_wait_on_io(reg, &wc);
+ o2hb_wait_on_io(&wc);
if (wc.wc_error && !status)
status = wc.wc_error;
@@ -492,7 +603,8 @@ static int o2hb_issue_node_write(struct o2hb_region *reg,
slot = o2nm_this_node();
- bio = o2hb_setup_one_bio(reg, write_wc, &slot, slot+1);
+ bio = o2hb_setup_one_bio(reg, write_wc, &slot, slot+1,
+ REQ_OP_WRITE | REQ_SYNC);
if (IS_ERR(bio)) {
status = PTR_ERR(bio);
mlog_errno(status);
@@ -500,7 +612,7 @@ static int o2hb_issue_node_write(struct o2hb_region *reg,
}
atomic_inc(&write_wc->wc_num_reqs);
- submit_bio(WRITE_SYNC, bio);
+ submit_bio(bio);
status = 0;
bail:
@@ -582,8 +694,8 @@ static int o2hb_check_own_slot(struct o2hb_region *reg)
else
errstr = ERRSTR3;
- mlog(ML_ERROR, "%s (%s): expected(%u:0x%llx, 0x%llx), "
- "ondisk(%u:0x%llx, 0x%llx)\n", errstr, reg->hr_dev_name,
+ mlog(ML_ERROR, "%s (%pg): expected(%u:0x%llx, 0x%llx), "
+ "ondisk(%u:0x%llx, 0x%llx)\n", errstr, reg_bdev(reg),
slot->ds_node_num, (unsigned long long)slot->ds_last_generation,
(unsigned long long)slot->ds_last_time, hb_block->hb_node,
(unsigned long long)le64_to_cpu(hb_block->hb_generation),
@@ -606,7 +718,7 @@ static inline void o2hb_prepare_block(struct o2hb_region *reg,
hb_block = (struct o2hb_disk_heartbeat_block *)slot->ds_raw_block;
memset(hb_block, 0, reg->hr_block_bytes);
/* TODO: time stuff */
- cputime = CURRENT_TIME.tv_sec;
+ cputime = ktime_get_real_seconds();
if (!cputime)
cputime = 1;
@@ -628,11 +740,9 @@ static void o2hb_fire_callbacks(struct o2hb_callback *hbcall,
struct o2nm_node *node,
int idx)
{
- struct list_head *iter;
struct o2hb_callback_func *f;
- list_for_each(iter, &hbcall->list) {
- f = list_entry(iter, struct o2hb_callback_func, hc_item);
+ list_for_each_entry(f, &hbcall->list, hc_item) {
mlog(ML_HEARTBEAT, "calling funcs %p\n", f);
(f->hc_func)(node, idx, f->hc_data);
}
@@ -641,16 +751,9 @@ static void o2hb_fire_callbacks(struct o2hb_callback *hbcall,
/* Will run the list in order until we process the passed event */
static void o2hb_run_event_list(struct o2hb_node_event *queued_event)
{
- int empty;
struct o2hb_callback *hbcall;
struct o2hb_node_event *event;
- spin_lock(&o2hb_live_lock);
- empty = list_empty(&queued_event->hn_item);
- spin_unlock(&o2hb_live_lock);
- if (empty)
- return;
-
/* Holding callback sem assures we don't alter the callback
* lists when doing this, and serializes ourselves with other
* processes wanting callbacks. */
@@ -709,6 +812,7 @@ static void o2hb_shutdown_slot(struct o2hb_disk_slot *slot)
struct o2hb_node_event event =
{ .hn_item = LIST_HEAD_INIT(event.hn_item), };
struct o2nm_node *node;
+ int queued = 0;
node = o2nm_get_node_by_num(slot->ds_node_num);
if (!node)
@@ -726,11 +830,13 @@ static void o2hb_shutdown_slot(struct o2hb_disk_slot *slot)
o2hb_queue_node_event(&event, O2HB_NODE_DOWN_CB, node,
slot->ds_node_num);
+ queued = 1;
}
}
spin_unlock(&o2hb_live_lock);
- o2hb_run_event_list(&event);
+ if (queued)
+ o2hb_run_event_list(&event);
o2nm_node_put(node);
}
@@ -758,12 +864,12 @@ static void o2hb_set_quorum_device(struct o2hb_region *reg)
* live nodes heartbeat on it. In other words, the region has been
* added to all nodes.
*/
- if (memcmp(reg->hr_live_node_bitmap, o2hb_live_node_bitmap,
- sizeof(o2hb_live_node_bitmap)))
+ if (!bitmap_equal(reg->hr_live_node_bitmap, o2hb_live_node_bitmap,
+ O2NM_MAX_NODES))
goto unlock;
- printk(KERN_NOTICE "o2hb: Region %s (%s) is now a quorum device\n",
- config_item_name(&reg->hr_item), reg->hr_dev_name);
+ printk(KERN_NOTICE "o2hb: Region %s (%pg) is now a quorum device\n",
+ config_item_name(&reg->hr_item), reg_bdev(reg));
set_bit(reg->hr_region_num, o2hb_quorum_region_bitmap);
@@ -771,7 +877,7 @@ static void o2hb_set_quorum_device(struct o2hb_region *reg)
* If global heartbeat active, unpin all regions if the
* region count > CUT_OFF
*/
- if (o2hb_pop_count(&o2hb_quorum_region_bitmap,
+ if (bitmap_weight(o2hb_quorum_region_bitmap,
O2NM_MAX_REGIONS) > O2HB_PIN_CUT_OFF)
o2hb_region_unpin(NULL);
unlock:
@@ -790,6 +896,7 @@ static int o2hb_check_slot(struct o2hb_region *reg,
unsigned int dead_ms = o2hb_dead_threshold * O2HB_REGION_TIMEOUT_MS;
unsigned int slot_dead_ms;
int tmp;
+ int queued = 0;
memcpy(hb_block, slot->ds_raw_block, reg->hr_block_bytes);
@@ -820,8 +927,8 @@ static int o2hb_check_slot(struct o2hb_region *reg,
/* The node is live but pushed out a bad crc. We
* consider it a transient miss but don't populate any
* other values as they may be junk. */
- mlog(ML_ERROR, "Node %d has written a bad crc to %s\n",
- slot->ds_node_num, reg->hr_dev_name);
+ mlog(ML_ERROR, "Node %d has written a bad crc to %pg\n",
+ slot->ds_node_num, reg_bdev(reg));
o2hb_dump_slot(hb_block);
slot->ds_equal_samples++;
@@ -883,6 +990,7 @@ fire_callbacks:
slot->ds_node_num);
changed = 1;
+ queued = 1;
}
list_add_tail(&slot->ds_live_item,
@@ -899,12 +1007,12 @@ fire_callbacks:
slot_dead_ms = le32_to_cpu(hb_block->hb_dead_ms);
if (slot_dead_ms && slot_dead_ms != dead_ms) {
/* TODO: Perhaps we can fail the region here. */
- mlog(ML_ERROR, "Node %d on device %s has a dead count "
+ mlog(ML_ERROR, "Node %d on device %pg has a dead count "
"of %u ms, but our count is %u ms.\n"
"Please double check your configuration values "
"for 'O2CB_HEARTBEAT_THRESHOLD'\n",
- slot->ds_node_num, reg->hr_dev_name, slot_dead_ms,
- dead_ms);
+ slot->ds_node_num, reg_bdev(reg),
+ slot_dead_ms, dead_ms);
}
goto out;
}
@@ -913,7 +1021,7 @@ fire_callbacks:
if (list_empty(&slot->ds_live_item))
goto out;
- /* live nodes only go dead after enough consequtive missed
+ /* live nodes only go dead after enough consecutive missed
* samples.. reset the missed counter whenever we see
* activity */
if (slot->ds_equal_samples >= o2hb_dead_threshold || gen_changed) {
@@ -934,6 +1042,7 @@ fire_callbacks:
node, slot->ds_node_num);
changed = 1;
+ queued = 1;
}
/* We don't clear this because the node is still
@@ -949,35 +1058,27 @@ fire_callbacks:
out:
spin_unlock(&o2hb_live_lock);
- o2hb_run_event_list(&event);
+ if (queued)
+ o2hb_run_event_list(&event);
if (node)
o2nm_node_put(node);
return changed;
}
-/* This could be faster if we just implmented a find_last_bit, but I
- * don't think the circumstances warrant it. */
-static int o2hb_highest_node(unsigned long *nodes,
- int numbits)
+static int o2hb_highest_node(unsigned long *nodes, int numbits)
{
- int highest, node;
-
- highest = numbits;
- node = -1;
- while ((node = find_next_bit(nodes, numbits, node + 1)) != -1) {
- if (node >= numbits)
- break;
-
- highest = node;
- }
+ return find_last_bit(nodes, numbits);
+}
- return highest;
+static int o2hb_lowest_node(unsigned long *nodes, int numbits)
+{
+ return find_first_bit(nodes, numbits);
}
static int o2hb_do_disk_heartbeat(struct o2hb_region *reg)
{
- int i, ret, highest_node;
+ int i, ret, highest_node, lowest_node;
int membership_change = 0, own_slot_ok = 0;
unsigned long configured_nodes[BITS_TO_LONGS(O2NM_MAX_NODES)];
unsigned long live_node_bitmap[BITS_TO_LONGS(O2NM_MAX_NODES)];
@@ -994,7 +1095,7 @@ static int o2hb_do_disk_heartbeat(struct o2hb_region *reg)
* If a node is not configured but is in the livemap, we still need
* to read the slot so as to be able to remove it from the livemap.
*/
- o2hb_fill_node_map(live_node_bitmap, sizeof(live_node_bitmap));
+ o2hb_fill_node_map(live_node_bitmap, O2NM_MAX_NODES);
i = -1;
while ((i = find_next_bit(live_node_bitmap,
O2NM_MAX_NODES, i + 1)) < O2NM_MAX_NODES) {
@@ -1002,7 +1103,8 @@ static int o2hb_do_disk_heartbeat(struct o2hb_region *reg)
}
highest_node = o2hb_highest_node(configured_nodes, O2NM_MAX_NODES);
- if (highest_node >= O2NM_MAX_NODES) {
+ lowest_node = o2hb_lowest_node(configured_nodes, O2NM_MAX_NODES);
+ if (highest_node >= O2NM_MAX_NODES || lowest_node >= O2NM_MAX_NODES) {
mlog(ML_NOTICE, "o2hb: No configured nodes found!\n");
ret = -EINVAL;
goto bail;
@@ -1012,7 +1114,7 @@ static int o2hb_do_disk_heartbeat(struct o2hb_region *reg)
* yet. Of course, if the node definitions have holes in them
* then we're reading an empty slot anyway... Consider this
* best-effort. */
- ret = o2hb_read_slots(reg, highest_node + 1);
+ ret = o2hb_read_slots(reg, lowest_node, highest_node + 1);
if (ret < 0) {
mlog_errno(ret);
goto bail;
@@ -1043,13 +1145,13 @@ static int o2hb_do_disk_heartbeat(struct o2hb_region *reg)
* before we can go to steady state. This ensures that
* people we find in our steady state have seen us.
*/
- o2hb_wait_on_io(reg, &write_wc);
+ o2hb_wait_on_io(&write_wc);
if (write_wc.wc_error) {
/* Do not re-arm the write timeout on I/O error - we
* can't be sure that the new block ever made it to
* disk */
- mlog(ML_ERROR, "Write error %d on device \"%s\"\n",
- write_wc.wc_error, reg->hr_dev_name);
+ mlog(ML_ERROR, "Write error %d on device \"%pg\"\n",
+ write_wc.wc_error, reg_bdev(reg));
ret = write_wc.wc_error;
goto bail;
}
@@ -1057,7 +1159,8 @@ static int o2hb_do_disk_heartbeat(struct o2hb_region *reg)
/* Skip disarming the timeout if own slot has stale/bad data */
if (own_slot_ok) {
o2hb_set_quorum_device(reg);
- o2hb_arm_write_timeout(reg);
+ o2hb_arm_timeout(reg);
+ reg->hr_last_timeout_start = jiffies;
}
bail:
@@ -1072,9 +1175,9 @@ bail:
if (atomic_read(&reg->hr_steady_iterations) != 0) {
if (atomic_dec_and_test(&reg->hr_unsteady_iterations)) {
printk(KERN_NOTICE "o2hb: Unable to stabilize "
- "heartbeart on region %s (%s)\n",
+ "heartbeat on region %s (%pg)\n",
config_item_name(&reg->hr_item),
- reg->hr_dev_name);
+ reg_bdev(reg));
atomic_set(&reg->hr_steady_iterations, 0);
reg->hr_aborted_start = 1;
wake_up(&o2hb_steady_queue);
@@ -1085,37 +1188,6 @@ bail:
return ret;
}
-/* Subtract b from a, storing the result in a. a *must* have a larger
- * value than b. */
-static void o2hb_tv_subtract(struct timeval *a,
- struct timeval *b)
-{
- /* just return 0 when a is after b */
- if (a->tv_sec < b->tv_sec ||
- (a->tv_sec == b->tv_sec && a->tv_usec < b->tv_usec)) {
- a->tv_sec = 0;
- a->tv_usec = 0;
- return;
- }
-
- a->tv_sec -= b->tv_sec;
- a->tv_usec -= b->tv_usec;
- while ( a->tv_usec < 0 ) {
- a->tv_sec--;
- a->tv_usec += 1000000;
- }
-}
-
-static unsigned int o2hb_elapsed_msecs(struct timeval *start,
- struct timeval *end)
-{
- struct timeval res = *end;
-
- o2hb_tv_subtract(&res, start);
-
- return res.tv_sec * 1000 + res.tv_usec / 1000;
-}
-
/*
* we ride the region ref that the region dir holds. before the region
* dir is removed and drops it ref it will wait to tear down this
@@ -1126,15 +1198,21 @@ static int o2hb_thread(void *data)
int i, ret;
struct o2hb_region *reg = data;
struct o2hb_bio_wait_ctxt write_wc;
- struct timeval before_hb, after_hb;
+ ktime_t before_hb, after_hb;
unsigned int elapsed_msec;
mlog(ML_HEARTBEAT|ML_KTHREAD, "hb thread running\n");
- set_user_nice(current, -20);
+ set_user_nice(current, MIN_NICE);
/* Pin node */
- o2nm_depend_this_node();
+ ret = o2nm_depend_this_node();
+ if (ret) {
+ mlog(ML_ERROR, "Node has been deleted, ret = %d\n", ret);
+ reg->hr_node_deleted = 1;
+ wake_up(&o2hb_steady_queue);
+ return 0;
+ }
while (!kthread_should_stop() &&
!reg->hr_unclean_stop && !reg->hr_aborted_start) {
@@ -1143,18 +1221,19 @@ static int o2hb_thread(void *data)
* hr_timeout_ms between disk writes. On busy systems
* this should result in a heartbeat which is less
* likely to time itself out. */
- do_gettimeofday(&before_hb);
+ before_hb = ktime_get_real();
ret = o2hb_do_disk_heartbeat(reg);
+ reg->hr_last_hb_status = ret;
+
+ after_hb = ktime_get_real();
- do_gettimeofday(&after_hb);
- elapsed_msec = o2hb_elapsed_msecs(&before_hb, &after_hb);
+ elapsed_msec = (unsigned int)
+ ktime_ms_delta(after_hb, before_hb);
mlog(ML_HEARTBEAT,
- "start = %lu.%lu, end = %lu.%lu, msec = %u\n",
- before_hb.tv_sec, (unsigned long) before_hb.tv_usec,
- after_hb.tv_sec, (unsigned long) after_hb.tv_usec,
- elapsed_msec);
+ "start = %lld, end = %lld, msec = %u, ret = %d\n",
+ before_hb, after_hb, elapsed_msec, ret);
if (!kthread_should_stop() &&
elapsed_msec < reg->hr_timeout_ms) {
@@ -1164,7 +1243,7 @@ static int o2hb_thread(void *data)
}
}
- o2hb_disarm_write_timeout(reg);
+ o2hb_disarm_timeout(reg);
/* unclean stop is only used in very bad situation */
for(i = 0; !reg->hr_unclean_stop && i < reg->hr_blocks; i++)
@@ -1179,7 +1258,7 @@ static int o2hb_thread(void *data)
o2hb_prepare_block(reg, 0);
ret = o2hb_issue_node_write(reg, &write_wc);
if (ret == 0)
- o2hb_wait_on_io(reg, &write_wc);
+ o2hb_wait_on_io(&write_wc);
else
mlog_errno(ret);
}
@@ -1229,7 +1308,7 @@ static int o2hb_debug_open(struct inode *inode, struct file *file)
case O2HB_DB_TYPE_REGION_NUMBER:
reg = (struct o2hb_region *)db->db_data;
- out += snprintf(buf + out, PAGE_SIZE - out, "%d\n",
+ out += scnprintf(buf + out, PAGE_SIZE - out, "%d\n",
reg->hr_region_num);
goto done;
@@ -1239,12 +1318,12 @@ static int o2hb_debug_open(struct inode *inode, struct file *file)
/* If 0, it has never been set before */
if (lts)
lts = jiffies_to_msecs(jiffies - lts);
- out += snprintf(buf + out, PAGE_SIZE - out, "%lu\n", lts);
+ out += scnprintf(buf + out, PAGE_SIZE - out, "%lu\n", lts);
goto done;
case O2HB_DB_TYPE_REGION_PINNED:
reg = (struct o2hb_region *)db->db_data;
- out += snprintf(buf + out, PAGE_SIZE - out, "%u\n",
+ out += scnprintf(buf + out, PAGE_SIZE - out, "%u\n",
!!reg->hr_item_pinned);
goto done;
@@ -1253,8 +1332,8 @@ static int o2hb_debug_open(struct inode *inode, struct file *file)
}
while ((i = find_next_bit(map, db->db_len, i + 1)) < db->db_len)
- out += snprintf(buf + out, PAGE_SIZE - out, "%d ", i);
- out += snprintf(buf + out, PAGE_SIZE - out, "\n");
+ out += scnprintf(buf + out, PAGE_SIZE - out, "%d ", i);
+ out += scnprintf(buf + out, PAGE_SIZE - out, "\n");
done:
i_size_write(inode, out);
@@ -1303,107 +1382,60 @@ static const struct file_operations o2hb_debug_fops = {
void o2hb_exit(void)
{
+ debugfs_remove_recursive(o2hb_debug_dir);
kfree(o2hb_db_livenodes);
kfree(o2hb_db_liveregions);
kfree(o2hb_db_quorumregions);
kfree(o2hb_db_failedregions);
- debugfs_remove(o2hb_debug_failedregions);
- debugfs_remove(o2hb_debug_quorumregions);
- debugfs_remove(o2hb_debug_liveregions);
- debugfs_remove(o2hb_debug_livenodes);
- debugfs_remove(o2hb_debug_dir);
}
-static struct dentry *o2hb_debug_create(const char *name, struct dentry *dir,
- struct o2hb_debug_buf **db, int db_len,
- int type, int size, int len, void *data)
+static void o2hb_debug_create(const char *name, struct dentry *dir,
+ struct o2hb_debug_buf **db, int db_len, int type,
+ int size, int len, void *data)
{
*db = kmalloc(db_len, GFP_KERNEL);
if (!*db)
- return NULL;
+ return;
(*db)->db_type = type;
(*db)->db_size = size;
(*db)->db_len = len;
(*db)->db_data = data;
- return debugfs_create_file(name, S_IFREG|S_IRUSR, dir, *db,
- &o2hb_debug_fops);
+ debugfs_create_file(name, S_IFREG|S_IRUSR, dir, *db, &o2hb_debug_fops);
}
-static int o2hb_debug_init(void)
+static void o2hb_debug_init(void)
{
- int ret = -ENOMEM;
-
o2hb_debug_dir = debugfs_create_dir(O2HB_DEBUG_DIR, NULL);
- if (!o2hb_debug_dir) {
- mlog_errno(ret);
- goto bail;
- }
-
- o2hb_debug_livenodes = o2hb_debug_create(O2HB_DEBUG_LIVENODES,
- o2hb_debug_dir,
- &o2hb_db_livenodes,
- sizeof(*o2hb_db_livenodes),
- O2HB_DB_TYPE_LIVENODES,
- sizeof(o2hb_live_node_bitmap),
- O2NM_MAX_NODES,
- o2hb_live_node_bitmap);
- if (!o2hb_debug_livenodes) {
- mlog_errno(ret);
- goto bail;
- }
- o2hb_debug_liveregions = o2hb_debug_create(O2HB_DEBUG_LIVEREGIONS,
- o2hb_debug_dir,
- &o2hb_db_liveregions,
- sizeof(*o2hb_db_liveregions),
- O2HB_DB_TYPE_LIVEREGIONS,
- sizeof(o2hb_live_region_bitmap),
- O2NM_MAX_REGIONS,
- o2hb_live_region_bitmap);
- if (!o2hb_debug_liveregions) {
- mlog_errno(ret);
- goto bail;
- }
+ o2hb_debug_create(O2HB_DEBUG_LIVENODES, o2hb_debug_dir,
+ &o2hb_db_livenodes, sizeof(*o2hb_db_livenodes),
+ O2HB_DB_TYPE_LIVENODES, sizeof(o2hb_live_node_bitmap),
+ O2NM_MAX_NODES, o2hb_live_node_bitmap);
- o2hb_debug_quorumregions =
- o2hb_debug_create(O2HB_DEBUG_QUORUMREGIONS,
- o2hb_debug_dir,
- &o2hb_db_quorumregions,
- sizeof(*o2hb_db_quorumregions),
- O2HB_DB_TYPE_QUORUMREGIONS,
- sizeof(o2hb_quorum_region_bitmap),
- O2NM_MAX_REGIONS,
- o2hb_quorum_region_bitmap);
- if (!o2hb_debug_quorumregions) {
- mlog_errno(ret);
- goto bail;
- }
+ o2hb_debug_create(O2HB_DEBUG_LIVEREGIONS, o2hb_debug_dir,
+ &o2hb_db_liveregions, sizeof(*o2hb_db_liveregions),
+ O2HB_DB_TYPE_LIVEREGIONS,
+ sizeof(o2hb_live_region_bitmap), O2NM_MAX_REGIONS,
+ o2hb_live_region_bitmap);
- o2hb_debug_failedregions =
- o2hb_debug_create(O2HB_DEBUG_FAILEDREGIONS,
- o2hb_debug_dir,
- &o2hb_db_failedregions,
- sizeof(*o2hb_db_failedregions),
- O2HB_DB_TYPE_FAILEDREGIONS,
- sizeof(o2hb_failed_region_bitmap),
- O2NM_MAX_REGIONS,
- o2hb_failed_region_bitmap);
- if (!o2hb_debug_failedregions) {
- mlog_errno(ret);
- goto bail;
- }
+ o2hb_debug_create(O2HB_DEBUG_QUORUMREGIONS, o2hb_debug_dir,
+ &o2hb_db_quorumregions,
+ sizeof(*o2hb_db_quorumregions),
+ O2HB_DB_TYPE_QUORUMREGIONS,
+ sizeof(o2hb_quorum_region_bitmap), O2NM_MAX_REGIONS,
+ o2hb_quorum_region_bitmap);
- ret = 0;
-bail:
- if (ret)
- o2hb_exit();
-
- return ret;
+ o2hb_debug_create(O2HB_DEBUG_FAILEDREGIONS, o2hb_debug_dir,
+ &o2hb_db_failedregions,
+ sizeof(*o2hb_db_failedregions),
+ O2HB_DB_TYPE_FAILEDREGIONS,
+ sizeof(o2hb_failed_region_bitmap), O2NM_MAX_REGIONS,
+ o2hb_failed_region_bitmap);
}
-int o2hb_init(void)
+void o2hb_init(void)
{
int i;
@@ -1413,38 +1445,34 @@ int o2hb_init(void)
for (i = 0; i < ARRAY_SIZE(o2hb_live_slots); i++)
INIT_LIST_HEAD(&o2hb_live_slots[i]);
- INIT_LIST_HEAD(&o2hb_node_events);
-
- memset(o2hb_live_node_bitmap, 0, sizeof(o2hb_live_node_bitmap));
- memset(o2hb_region_bitmap, 0, sizeof(o2hb_region_bitmap));
- memset(o2hb_live_region_bitmap, 0, sizeof(o2hb_live_region_bitmap));
- memset(o2hb_quorum_region_bitmap, 0, sizeof(o2hb_quorum_region_bitmap));
- memset(o2hb_failed_region_bitmap, 0, sizeof(o2hb_failed_region_bitmap));
+ bitmap_zero(o2hb_live_node_bitmap, O2NM_MAX_NODES);
+ bitmap_zero(o2hb_region_bitmap, O2NM_MAX_REGIONS);
+ bitmap_zero(o2hb_live_region_bitmap, O2NM_MAX_REGIONS);
+ bitmap_zero(o2hb_quorum_region_bitmap, O2NM_MAX_REGIONS);
+ bitmap_zero(o2hb_failed_region_bitmap, O2NM_MAX_REGIONS);
o2hb_dependent_users = 0;
- return o2hb_debug_init();
+ o2hb_debug_init();
}
/* if we're already in a callback then we're already serialized by the sem */
static void o2hb_fill_node_map_from_callback(unsigned long *map,
- unsigned bytes)
+ unsigned int bits)
{
- BUG_ON(bytes < (BITS_TO_LONGS(O2NM_MAX_NODES) * sizeof(unsigned long)));
-
- memcpy(map, &o2hb_live_node_bitmap, bytes);
+ bitmap_copy(map, o2hb_live_node_bitmap, bits);
}
/*
* get a map of all nodes that are heartbeating in any regions
*/
-void o2hb_fill_node_map(unsigned long *map, unsigned bytes)
+void o2hb_fill_node_map(unsigned long *map, unsigned int bits)
{
/* callers want to serialize this map and callbacks so that they
* can trust that they don't miss nodes coming to the party */
down_read(&o2hb_callback_sem);
spin_lock(&o2hb_live_lock);
- o2hb_fill_node_map_from_callback(map, bytes);
+ o2hb_fill_node_map_from_callback(map, bits);
spin_unlock(&o2hb_live_lock);
up_read(&o2hb_callback_sem);
}
@@ -1469,7 +1497,7 @@ static void o2hb_region_release(struct config_item *item)
struct page *page;
struct o2hb_region *reg = to_o2hb_region(item);
- mlog(ML_HEARTBEAT, "hb region release (%s)\n", reg->hr_dev_name);
+ mlog(ML_HEARTBEAT, "hb region release (%pg)\n", reg_bdev(reg));
kfree(reg->hr_tmp_block);
@@ -1482,38 +1510,37 @@ static void o2hb_region_release(struct config_item *item)
kfree(reg->hr_slot_data);
}
- if (reg->hr_bdev)
- blkdev_put(reg->hr_bdev, FMODE_READ|FMODE_WRITE);
+ if (reg->hr_bdev_file)
+ fput(reg->hr_bdev_file);
kfree(reg->hr_slots);
- kfree(reg->hr_db_regnum);
+ debugfs_remove_recursive(reg->hr_debug_dir);
kfree(reg->hr_db_livenodes);
- debugfs_remove(reg->hr_debug_livenodes);
- debugfs_remove(reg->hr_debug_regnum);
- debugfs_remove(reg->hr_debug_elapsed_time);
- debugfs_remove(reg->hr_debug_pinned);
- debugfs_remove(reg->hr_debug_dir);
+ kfree(reg->hr_db_regnum);
+ kfree(reg->hr_db_elapsed_time);
+ kfree(reg->hr_db_pinned);
spin_lock(&o2hb_live_lock);
list_del(&reg->hr_all_item);
spin_unlock(&o2hb_live_lock);
+ o2net_unregister_handler_list(&reg->hr_handler_list);
kfree(reg);
}
static int o2hb_read_block_input(struct o2hb_region *reg,
const char *page,
- size_t count,
unsigned long *ret_bytes,
unsigned int *ret_bits)
{
unsigned long bytes;
char *p = (char *)page;
+ int ret;
- bytes = simple_strtoul(p, &p, 0);
- if (!p || (*p && (*p != '\n')))
- return -EINVAL;
+ ret = kstrtoul(p, 0, &bytes);
+ if (ret)
+ return ret;
/* Heartbeat and fs min / max block sizes are the same. */
if (bytes > 4096 || bytes < 512)
@@ -1529,25 +1556,26 @@ static int o2hb_read_block_input(struct o2hb_region *reg,
return 0;
}
-static ssize_t o2hb_region_block_bytes_read(struct o2hb_region *reg,
+static ssize_t o2hb_region_block_bytes_show(struct config_item *item,
char *page)
{
- return sprintf(page, "%u\n", reg->hr_block_bytes);
+ return sprintf(page, "%u\n", to_o2hb_region(item)->hr_block_bytes);
}
-static ssize_t o2hb_region_block_bytes_write(struct o2hb_region *reg,
+static ssize_t o2hb_region_block_bytes_store(struct config_item *item,
const char *page,
size_t count)
{
+ struct o2hb_region *reg = to_o2hb_region(item);
int status;
unsigned long block_bytes;
unsigned int block_bits;
- if (reg->hr_bdev)
+ if (reg->hr_bdev_file)
return -EINVAL;
- status = o2hb_read_block_input(reg, page, count,
- &block_bytes, &block_bits);
+ status = o2hb_read_block_input(reg, page, &block_bytes,
+ &block_bits);
if (status)
return status;
@@ -1557,24 +1585,26 @@ static ssize_t o2hb_region_block_bytes_write(struct o2hb_region *reg,
return count;
}
-static ssize_t o2hb_region_start_block_read(struct o2hb_region *reg,
+static ssize_t o2hb_region_start_block_show(struct config_item *item,
char *page)
{
- return sprintf(page, "%llu\n", reg->hr_start_block);
+ return sprintf(page, "%llu\n", to_o2hb_region(item)->hr_start_block);
}
-static ssize_t o2hb_region_start_block_write(struct o2hb_region *reg,
+static ssize_t o2hb_region_start_block_store(struct config_item *item,
const char *page,
size_t count)
{
+ struct o2hb_region *reg = to_o2hb_region(item);
unsigned long long tmp;
char *p = (char *)page;
+ ssize_t ret;
- if (reg->hr_bdev)
+ if (reg->hr_bdev_file)
return -EINVAL;
- tmp = simple_strtoull(p, &p, 0);
- if (!p || (*p && (*p != '\n')))
+ ret = kstrtoull(p, 0, &tmp);
+ if (ret)
return -EINVAL;
reg->hr_start_block = tmp;
@@ -1582,25 +1612,26 @@ static ssize_t o2hb_region_start_block_write(struct o2hb_region *reg,
return count;
}
-static ssize_t o2hb_region_blocks_read(struct o2hb_region *reg,
- char *page)
+static ssize_t o2hb_region_blocks_show(struct config_item *item, char *page)
{
- return sprintf(page, "%d\n", reg->hr_blocks);
+ return sprintf(page, "%d\n", to_o2hb_region(item)->hr_blocks);
}
-static ssize_t o2hb_region_blocks_write(struct o2hb_region *reg,
+static ssize_t o2hb_region_blocks_store(struct config_item *item,
const char *page,
size_t count)
{
+ struct o2hb_region *reg = to_o2hb_region(item);
unsigned long tmp;
char *p = (char *)page;
+ int ret;
- if (reg->hr_bdev)
+ if (reg->hr_bdev_file)
return -EINVAL;
- tmp = simple_strtoul(p, &p, 0);
- if (!p || (*p && (*p != '\n')))
- return -EINVAL;
+ ret = kstrtoul(p, 0, &tmp);
+ if (ret)
+ return ret;
if (tmp > O2NM_MAX_NODES || tmp == 0)
return -ERANGE;
@@ -1610,20 +1641,19 @@ static ssize_t o2hb_region_blocks_write(struct o2hb_region *reg,
return count;
}
-static ssize_t o2hb_region_dev_read(struct o2hb_region *reg,
- char *page)
+static ssize_t o2hb_region_dev_show(struct config_item *item, char *page)
{
unsigned int ret = 0;
- if (reg->hr_bdev)
- ret = sprintf(page, "%s\n", reg->hr_dev_name);
+ if (to_o2hb_region(item)->hr_bdev_file)
+ ret = sprintf(page, "%pg\n", reg_bdev(to_o2hb_region(item)));
return ret;
}
static void o2hb_init_region_params(struct o2hb_region *reg)
{
- reg->hr_slots_per_page = PAGE_CACHE_SIZE >> reg->hr_block_bits;
+ reg->hr_slots_per_page = PAGE_SIZE >> reg->hr_block_bits;
reg->hr_timeout_ms = O2HB_REGION_TIMEOUT_MS;
mlog(ML_HEARTBEAT, "hr_start_block = %llu, hr_blocks = %u\n",
@@ -1644,17 +1674,13 @@ static int o2hb_map_slot_data(struct o2hb_region *reg)
struct o2hb_disk_slot *slot;
reg->hr_tmp_block = kmalloc(reg->hr_block_bytes, GFP_KERNEL);
- if (reg->hr_tmp_block == NULL) {
- mlog_errno(-ENOMEM);
+ if (reg->hr_tmp_block == NULL)
return -ENOMEM;
- }
reg->hr_slots = kcalloc(reg->hr_blocks,
sizeof(struct o2hb_disk_slot), GFP_KERNEL);
- if (reg->hr_slots == NULL) {
- mlog_errno(-ENOMEM);
+ if (reg->hr_slots == NULL)
return -ENOMEM;
- }
for(i = 0; i < reg->hr_blocks; i++) {
slot = &reg->hr_slots[i];
@@ -1670,17 +1696,13 @@ static int o2hb_map_slot_data(struct o2hb_region *reg)
reg->hr_slot_data = kcalloc(reg->hr_num_pages, sizeof(struct page *),
GFP_KERNEL);
- if (!reg->hr_slot_data) {
- mlog_errno(-ENOMEM);
+ if (!reg->hr_slot_data)
return -ENOMEM;
- }
for(i = 0; i < reg->hr_num_pages; i++) {
page = alloc_page(GFP_KERNEL);
- if (!page) {
- mlog_errno(-ENOMEM);
+ if (!page)
return -ENOMEM;
- }
reg->hr_slot_data[i] = page;
@@ -1711,11 +1733,9 @@ static int o2hb_populate_slot_data(struct o2hb_region *reg)
struct o2hb_disk_slot *slot;
struct o2hb_disk_heartbeat_block *hb_block;
- ret = o2hb_read_slots(reg, reg->hr_blocks);
- if (ret) {
- mlog_errno(ret);
+ ret = o2hb_read_slots(reg, 0, reg->hr_blocks);
+ if (ret)
goto out;
- }
/* We only want to get an idea of the values initially in each
* slot, so we do no verification - o2hb_check_slot will
@@ -1735,61 +1755,57 @@ out:
return ret;
}
-/* this is acting as commit; we set up all of hr_bdev and hr_task or nothing */
-static ssize_t o2hb_region_dev_write(struct o2hb_region *reg,
+/*
+ * this is acting as commit; we set up all of hr_bdev_file and hr_task or
+ * nothing
+ */
+static ssize_t o2hb_region_dev_store(struct config_item *item,
const char *page,
size_t count)
{
+ struct o2hb_region *reg = to_o2hb_region(item);
struct task_struct *hb_task;
long fd;
int sectsize;
char *p = (char *)page;
- struct fd f;
- struct inode *inode;
ssize_t ret = -EINVAL;
int live_threshold;
- if (reg->hr_bdev)
- goto out;
+ if (reg->hr_bdev_file)
+ return -EINVAL;
/* We can't heartbeat without having had our node number
* configured yet. */
if (o2nm_this_node() == O2NM_MAX_NODES)
- goto out;
+ return -EINVAL;
- fd = simple_strtol(p, &p, 0);
- if (!p || (*p && (*p != '\n')))
- goto out;
+ ret = kstrtol(p, 0, &fd);
+ if (ret < 0)
+ return -EINVAL;
if (fd < 0 || fd >= INT_MAX)
- goto out;
+ return -EINVAL;
- f = fdget(fd);
- if (f.file == NULL)
- goto out;
+ CLASS(fd, f)(fd);
+ if (fd_empty(f))
+ return -EINVAL;
if (reg->hr_blocks == 0 || reg->hr_start_block == 0 ||
reg->hr_block_bytes == 0)
- goto out2;
-
- inode = igrab(f.file->f_mapping->host);
- if (inode == NULL)
- goto out2;
+ return -EINVAL;
- if (!S_ISBLK(inode->i_mode))
- goto out3;
+ if (!S_ISBLK(fd_file(f)->f_mapping->host->i_mode))
+ return -EINVAL;
- reg->hr_bdev = I_BDEV(f.file->f_mapping->host);
- ret = blkdev_get(reg->hr_bdev, FMODE_WRITE | FMODE_READ, NULL);
- if (ret) {
- reg->hr_bdev = NULL;
- goto out3;
+ reg->hr_bdev_file = bdev_file_open_by_dev(fd_file(f)->f_mapping->host->i_rdev,
+ BLK_OPEN_WRITE | BLK_OPEN_READ, NULL, NULL);
+ if (IS_ERR(reg->hr_bdev_file)) {
+ ret = PTR_ERR(reg->hr_bdev_file);
+ reg->hr_bdev_file = NULL;
+ return ret;
}
- inode = NULL;
-
- bdevname(reg->hr_bdev, reg->hr_dev_name);
- sectsize = bdev_logical_block_size(reg->hr_bdev);
+ sectsize = bdev_logical_block_size(reg_bdev(reg));
if (sectsize != reg->hr_block_bytes) {
mlog(ML_ERROR,
"blocksize %u incorrect for device, expected %d",
@@ -1819,6 +1835,7 @@ static ssize_t o2hb_region_dev_write(struct o2hb_region *reg,
}
INIT_DELAYED_WORK(&reg->hr_write_timeout_work, o2hb_write_timeout);
+ INIT_DELAYED_WORK(&reg->hr_nego_timeout_work, o2hb_nego_timeout);
/*
* A node is considered live after it has beat LIVE_THRESHOLD
@@ -1831,14 +1848,14 @@ static ssize_t o2hb_region_dev_write(struct o2hb_region *reg,
live_threshold = O2HB_LIVE_THRESHOLD;
if (o2hb_global_heartbeat_active()) {
spin_lock(&o2hb_live_lock);
- if (o2hb_pop_count(&o2hb_region_bitmap, O2NM_MAX_REGIONS) == 1)
+ if (bitmap_weight(o2hb_region_bitmap, O2NM_MAX_REGIONS) == 1)
live_threshold <<= 1;
spin_unlock(&o2hb_live_lock);
}
++live_threshold;
atomic_set(&reg->hr_steady_iterations, live_threshold);
- /* unsteady_iterations is double the steady_iterations */
- atomic_set(&reg->hr_unsteady_iterations, (live_threshold << 1));
+ /* unsteady_iterations is triple the steady_iterations */
+ atomic_set(&reg->hr_unsteady_iterations, (live_threshold * 3));
hb_task = kthread_run(o2hb_thread, reg, "o2hb-%s",
reg->hr_item.ci_name);
@@ -1853,7 +1870,8 @@ static ssize_t o2hb_region_dev_write(struct o2hb_region *reg,
spin_unlock(&o2hb_live_lock);
ret = wait_event_interruptible(o2hb_steady_queue,
- atomic_read(&reg->hr_steady_iterations) == 0);
+ atomic_read(&reg->hr_steady_iterations) == 0 ||
+ reg->hr_node_deleted);
if (ret) {
atomic_set(&reg->hr_steady_iterations, 0);
reg->hr_aborted_start = 1;
@@ -1864,6 +1882,11 @@ static ssize_t o2hb_region_dev_write(struct o2hb_region *reg,
goto out3;
}
+ if (reg->hr_node_deleted) {
+ ret = -EINVAL;
+ goto out3;
+ }
+
/* Ok, we were woken. Make sure it wasn't by drop_item() */
spin_lock(&o2hb_live_lock);
hb_task = reg->hr_task;
@@ -1877,26 +1900,20 @@ static ssize_t o2hb_region_dev_write(struct o2hb_region *reg,
ret = -EIO;
if (hb_task && o2hb_global_heartbeat_active())
- printk(KERN_NOTICE "o2hb: Heartbeat started on region %s (%s)\n",
- config_item_name(&reg->hr_item), reg->hr_dev_name);
+ printk(KERN_NOTICE "o2hb: Heartbeat started on region %s (%pg)\n",
+ config_item_name(&reg->hr_item), reg_bdev(reg));
out3:
- iput(inode);
-out2:
- fdput(f);
-out:
if (ret < 0) {
- if (reg->hr_bdev) {
- blkdev_put(reg->hr_bdev, FMODE_READ|FMODE_WRITE);
- reg->hr_bdev = NULL;
- }
+ fput(reg->hr_bdev_file);
+ reg->hr_bdev_file = NULL;
}
return ret;
}
-static ssize_t o2hb_region_pid_read(struct o2hb_region *reg,
- char *page)
+static ssize_t o2hb_region_pid_show(struct config_item *item, char *page)
{
+ struct o2hb_region *reg = to_o2hb_region(item);
pid_t pid = 0;
spin_lock(&o2hb_live_lock);
@@ -1910,95 +1927,26 @@ static ssize_t o2hb_region_pid_read(struct o2hb_region *reg,
return sprintf(page, "%u\n", pid);
}
-struct o2hb_region_attribute {
- struct configfs_attribute attr;
- ssize_t (*show)(struct o2hb_region *, char *);
- ssize_t (*store)(struct o2hb_region *, const char *, size_t);
-};
-
-static struct o2hb_region_attribute o2hb_region_attr_block_bytes = {
- .attr = { .ca_owner = THIS_MODULE,
- .ca_name = "block_bytes",
- .ca_mode = S_IRUGO | S_IWUSR },
- .show = o2hb_region_block_bytes_read,
- .store = o2hb_region_block_bytes_write,
-};
-
-static struct o2hb_region_attribute o2hb_region_attr_start_block = {
- .attr = { .ca_owner = THIS_MODULE,
- .ca_name = "start_block",
- .ca_mode = S_IRUGO | S_IWUSR },
- .show = o2hb_region_start_block_read,
- .store = o2hb_region_start_block_write,
-};
-
-static struct o2hb_region_attribute o2hb_region_attr_blocks = {
- .attr = { .ca_owner = THIS_MODULE,
- .ca_name = "blocks",
- .ca_mode = S_IRUGO | S_IWUSR },
- .show = o2hb_region_blocks_read,
- .store = o2hb_region_blocks_write,
-};
-
-static struct o2hb_region_attribute o2hb_region_attr_dev = {
- .attr = { .ca_owner = THIS_MODULE,
- .ca_name = "dev",
- .ca_mode = S_IRUGO | S_IWUSR },
- .show = o2hb_region_dev_read,
- .store = o2hb_region_dev_write,
-};
-
-static struct o2hb_region_attribute o2hb_region_attr_pid = {
- .attr = { .ca_owner = THIS_MODULE,
- .ca_name = "pid",
- .ca_mode = S_IRUGO | S_IRUSR },
- .show = o2hb_region_pid_read,
-};
+CONFIGFS_ATTR(o2hb_region_, block_bytes);
+CONFIGFS_ATTR(o2hb_region_, start_block);
+CONFIGFS_ATTR(o2hb_region_, blocks);
+CONFIGFS_ATTR(o2hb_region_, dev);
+CONFIGFS_ATTR_RO(o2hb_region_, pid);
static struct configfs_attribute *o2hb_region_attrs[] = {
- &o2hb_region_attr_block_bytes.attr,
- &o2hb_region_attr_start_block.attr,
- &o2hb_region_attr_blocks.attr,
- &o2hb_region_attr_dev.attr,
- &o2hb_region_attr_pid.attr,
+ &o2hb_region_attr_block_bytes,
+ &o2hb_region_attr_start_block,
+ &o2hb_region_attr_blocks,
+ &o2hb_region_attr_dev,
+ &o2hb_region_attr_pid,
NULL,
};
-static ssize_t o2hb_region_show(struct config_item *item,
- struct configfs_attribute *attr,
- char *page)
-{
- struct o2hb_region *reg = to_o2hb_region(item);
- struct o2hb_region_attribute *o2hb_region_attr =
- container_of(attr, struct o2hb_region_attribute, attr);
- ssize_t ret = 0;
-
- if (o2hb_region_attr->show)
- ret = o2hb_region_attr->show(reg, page);
- return ret;
-}
-
-static ssize_t o2hb_region_store(struct config_item *item,
- struct configfs_attribute *attr,
- const char *page, size_t count)
-{
- struct o2hb_region *reg = to_o2hb_region(item);
- struct o2hb_region_attribute *o2hb_region_attr =
- container_of(attr, struct o2hb_region_attribute, attr);
- ssize_t ret = -EINVAL;
-
- if (o2hb_region_attr->store)
- ret = o2hb_region_attr->store(reg, page, count);
- return ret;
-}
-
static struct configfs_item_operations o2hb_region_item_ops = {
.release = o2hb_region_release,
- .show_attribute = o2hb_region_show,
- .store_attribute = o2hb_region_store,
};
-static struct config_item_type o2hb_region_type = {
+static const struct config_item_type o2hb_region_type = {
.ct_item_ops = &o2hb_region_item_ops,
.ct_attrs = o2hb_region_attrs,
.ct_owner = THIS_MODULE,
@@ -2018,69 +1966,33 @@ static struct o2hb_heartbeat_group *to_o2hb_heartbeat_group(struct config_group
: NULL;
}
-static int o2hb_debug_region_init(struct o2hb_region *reg, struct dentry *dir)
+static void o2hb_debug_region_init(struct o2hb_region *reg,
+ struct dentry *parent)
{
- int ret = -ENOMEM;
+ struct dentry *dir;
- reg->hr_debug_dir =
- debugfs_create_dir(config_item_name(&reg->hr_item), dir);
- if (!reg->hr_debug_dir) {
- mlog_errno(ret);
- goto bail;
- }
+ dir = debugfs_create_dir(config_item_name(&reg->hr_item), parent);
+ reg->hr_debug_dir = dir;
- reg->hr_debug_livenodes =
- o2hb_debug_create(O2HB_DEBUG_LIVENODES,
- reg->hr_debug_dir,
- &(reg->hr_db_livenodes),
- sizeof(*(reg->hr_db_livenodes)),
- O2HB_DB_TYPE_REGION_LIVENODES,
- sizeof(reg->hr_live_node_bitmap),
- O2NM_MAX_NODES, reg);
- if (!reg->hr_debug_livenodes) {
- mlog_errno(ret);
- goto bail;
- }
+ o2hb_debug_create(O2HB_DEBUG_LIVENODES, dir, &(reg->hr_db_livenodes),
+ sizeof(*(reg->hr_db_livenodes)),
+ O2HB_DB_TYPE_REGION_LIVENODES,
+ sizeof(reg->hr_live_node_bitmap), O2NM_MAX_NODES,
+ reg);
- reg->hr_debug_regnum =
- o2hb_debug_create(O2HB_DEBUG_REGION_NUMBER,
- reg->hr_debug_dir,
- &(reg->hr_db_regnum),
- sizeof(*(reg->hr_db_regnum)),
- O2HB_DB_TYPE_REGION_NUMBER,
- 0, O2NM_MAX_NODES, reg);
- if (!reg->hr_debug_regnum) {
- mlog_errno(ret);
- goto bail;
- }
+ o2hb_debug_create(O2HB_DEBUG_REGION_NUMBER, dir, &(reg->hr_db_regnum),
+ sizeof(*(reg->hr_db_regnum)),
+ O2HB_DB_TYPE_REGION_NUMBER, 0, O2NM_MAX_NODES, reg);
- reg->hr_debug_elapsed_time =
- o2hb_debug_create(O2HB_DEBUG_REGION_ELAPSED_TIME,
- reg->hr_debug_dir,
- &(reg->hr_db_elapsed_time),
- sizeof(*(reg->hr_db_elapsed_time)),
- O2HB_DB_TYPE_REGION_ELAPSED_TIME,
- 0, 0, reg);
- if (!reg->hr_debug_elapsed_time) {
- mlog_errno(ret);
- goto bail;
- }
+ o2hb_debug_create(O2HB_DEBUG_REGION_ELAPSED_TIME, dir,
+ &(reg->hr_db_elapsed_time),
+ sizeof(*(reg->hr_db_elapsed_time)),
+ O2HB_DB_TYPE_REGION_ELAPSED_TIME, 0, 0, reg);
- reg->hr_debug_pinned =
- o2hb_debug_create(O2HB_DEBUG_REGION_PINNED,
- reg->hr_debug_dir,
- &(reg->hr_db_pinned),
- sizeof(*(reg->hr_db_pinned)),
- O2HB_DB_TYPE_REGION_PINNED,
- 0, 0, reg);
- if (!reg->hr_debug_pinned) {
- mlog_errno(ret);
- goto bail;
- }
+ o2hb_debug_create(O2HB_DEBUG_REGION_PINNED, dir, &(reg->hr_db_pinned),
+ sizeof(*(reg->hr_db_pinned)),
+ O2HB_DB_TYPE_REGION_PINNED, 0, 0, reg);
- ret = 0;
-bail:
- return ret;
}
static struct config_item *o2hb_heartbeat_group_make_item(struct config_group *group,
@@ -2115,13 +2027,39 @@ static struct config_item *o2hb_heartbeat_group_make_item(struct config_group *g
config_item_init_type_name(&reg->hr_item, name, &o2hb_region_type);
- ret = o2hb_debug_region_init(reg, o2hb_debug_dir);
- if (ret) {
- config_item_put(&reg->hr_item);
- goto free;
- }
+ /* this is the same way to generate msg key as dlm, for local heartbeat,
+ * name is also the same, so make initial crc value different to avoid
+ * message key conflict.
+ */
+ reg->hr_key = crc32_le(reg->hr_region_num + O2NM_MAX_REGIONS,
+ name, strlen(name));
+ INIT_LIST_HEAD(&reg->hr_handler_list);
+ ret = o2net_register_handler(O2HB_NEGO_TIMEOUT_MSG, reg->hr_key,
+ sizeof(struct o2hb_nego_msg),
+ o2hb_nego_timeout_handler,
+ reg, NULL, &reg->hr_handler_list);
+ if (ret)
+ goto remove_item;
+
+ ret = o2net_register_handler(O2HB_NEGO_APPROVE_MSG, reg->hr_key,
+ sizeof(struct o2hb_nego_msg),
+ o2hb_nego_approve_handler,
+ reg, NULL, &reg->hr_handler_list);
+ if (ret)
+ goto unregister_handler;
+
+ o2hb_debug_region_init(reg, o2hb_debug_dir);
return &reg->hr_item;
+
+unregister_handler:
+ o2net_unregister_handler_list(&reg->hr_handler_list);
+remove_item:
+ spin_lock(&o2hb_live_lock);
+ list_del(&reg->hr_all_item);
+ if (o2hb_global_heartbeat_active())
+ clear_bit(reg->hr_region_num, o2hb_region_bitmap);
+ spin_unlock(&o2hb_live_lock);
free:
kfree(reg);
return ERR_PTR(ret);
@@ -2152,10 +2090,10 @@ static void o2hb_heartbeat_group_drop_item(struct config_group *group,
quorum_region = 1;
clear_bit(reg->hr_region_num, o2hb_quorum_region_bitmap);
spin_unlock(&o2hb_live_lock);
- printk(KERN_NOTICE "o2hb: Heartbeat %s on region %s (%s)\n",
+ printk(KERN_NOTICE "o2hb: Heartbeat %s on region %s (%pg)\n",
((atomic_read(&reg->hr_steady_iterations) == 0) ?
"stopped" : "start aborted"), config_item_name(item),
- reg->hr_dev_name);
+ reg_bdev(reg));
}
/*
@@ -2182,7 +2120,7 @@ static void o2hb_heartbeat_group_drop_item(struct config_group *group,
if (!o2hb_dependent_users)
goto unlock;
- if (o2hb_pop_count(&o2hb_quorum_region_bitmap,
+ if (bitmap_weight(o2hb_quorum_region_bitmap,
O2NM_MAX_REGIONS) <= O2HB_PIN_CUT_OFF)
o2hb_region_pin(NULL);
@@ -2190,56 +2128,22 @@ unlock:
spin_unlock(&o2hb_live_lock);
}
-struct o2hb_heartbeat_group_attribute {
- struct configfs_attribute attr;
- ssize_t (*show)(struct o2hb_heartbeat_group *, char *);
- ssize_t (*store)(struct o2hb_heartbeat_group *, const char *, size_t);
-};
-
-static ssize_t o2hb_heartbeat_group_show(struct config_item *item,
- struct configfs_attribute *attr,
- char *page)
-{
- struct o2hb_heartbeat_group *reg = to_o2hb_heartbeat_group(to_config_group(item));
- struct o2hb_heartbeat_group_attribute *o2hb_heartbeat_group_attr =
- container_of(attr, struct o2hb_heartbeat_group_attribute, attr);
- ssize_t ret = 0;
-
- if (o2hb_heartbeat_group_attr->show)
- ret = o2hb_heartbeat_group_attr->show(reg, page);
- return ret;
-}
-
-static ssize_t o2hb_heartbeat_group_store(struct config_item *item,
- struct configfs_attribute *attr,
- const char *page, size_t count)
-{
- struct o2hb_heartbeat_group *reg = to_o2hb_heartbeat_group(to_config_group(item));
- struct o2hb_heartbeat_group_attribute *o2hb_heartbeat_group_attr =
- container_of(attr, struct o2hb_heartbeat_group_attribute, attr);
- ssize_t ret = -EINVAL;
-
- if (o2hb_heartbeat_group_attr->store)
- ret = o2hb_heartbeat_group_attr->store(reg, page, count);
- return ret;
-}
-
-static ssize_t o2hb_heartbeat_group_threshold_show(struct o2hb_heartbeat_group *group,
- char *page)
+static ssize_t o2hb_heartbeat_group_dead_threshold_show(struct config_item *item,
+ char *page)
{
return sprintf(page, "%u\n", o2hb_dead_threshold);
}
-static ssize_t o2hb_heartbeat_group_threshold_store(struct o2hb_heartbeat_group *group,
- const char *page,
- size_t count)
+static ssize_t o2hb_heartbeat_group_dead_threshold_store(struct config_item *item,
+ const char *page, size_t count)
{
unsigned long tmp;
char *p = (char *)page;
+ int ret;
- tmp = simple_strtoul(p, &p, 10);
- if (!p || (*p && (*p != '\n')))
- return -EINVAL;
+ ret = kstrtoul(p, 10, &tmp);
+ if (ret)
+ return ret;
/* this will validate ranges for us. */
o2hb_dead_threshold_set((unsigned int) tmp);
@@ -2247,17 +2151,15 @@ static ssize_t o2hb_heartbeat_group_threshold_store(struct o2hb_heartbeat_group
return count;
}
-static
-ssize_t o2hb_heartbeat_group_mode_show(struct o2hb_heartbeat_group *group,
- char *page)
+static ssize_t o2hb_heartbeat_group_mode_show(struct config_item *item,
+ char *page)
{
return sprintf(page, "%s\n",
o2hb_heartbeat_mode_desc[o2hb_heartbeat_mode]);
}
-static
-ssize_t o2hb_heartbeat_group_mode_store(struct o2hb_heartbeat_group *group,
- const char *page, size_t count)
+static ssize_t o2hb_heartbeat_group_mode_store(struct config_item *item,
+ const char *page, size_t count)
{
unsigned int i;
int ret;
@@ -2268,7 +2170,7 @@ ssize_t o2hb_heartbeat_group_mode_store(struct o2hb_heartbeat_group *group,
return -EINVAL;
for (i = 0; i < O2HB_HEARTBEAT_NUM_MODES; ++i) {
- if (strnicmp(page, o2hb_heartbeat_mode_desc[i], len))
+ if (strncasecmp(page, o2hb_heartbeat_mode_desc[i], len))
continue;
ret = o2hb_global_heartbeat_mode_set(i);
@@ -2282,41 +2184,22 @@ ssize_t o2hb_heartbeat_group_mode_store(struct o2hb_heartbeat_group *group,
}
-static struct o2hb_heartbeat_group_attribute o2hb_heartbeat_group_attr_threshold = {
- .attr = { .ca_owner = THIS_MODULE,
- .ca_name = "dead_threshold",
- .ca_mode = S_IRUGO | S_IWUSR },
- .show = o2hb_heartbeat_group_threshold_show,
- .store = o2hb_heartbeat_group_threshold_store,
-};
-
-static struct o2hb_heartbeat_group_attribute o2hb_heartbeat_group_attr_mode = {
- .attr = { .ca_owner = THIS_MODULE,
- .ca_name = "mode",
- .ca_mode = S_IRUGO | S_IWUSR },
- .show = o2hb_heartbeat_group_mode_show,
- .store = o2hb_heartbeat_group_mode_store,
-};
+CONFIGFS_ATTR(o2hb_heartbeat_group_, dead_threshold);
+CONFIGFS_ATTR(o2hb_heartbeat_group_, mode);
static struct configfs_attribute *o2hb_heartbeat_group_attrs[] = {
- &o2hb_heartbeat_group_attr_threshold.attr,
- &o2hb_heartbeat_group_attr_mode.attr,
+ &o2hb_heartbeat_group_attr_dead_threshold,
+ &o2hb_heartbeat_group_attr_mode,
NULL,
};
-static struct configfs_item_operations o2hb_heartbeat_group_item_ops = {
- .show_attribute = o2hb_heartbeat_group_show,
- .store_attribute = o2hb_heartbeat_group_store,
-};
-
static struct configfs_group_operations o2hb_heartbeat_group_group_ops = {
.make_item = o2hb_heartbeat_group_make_item,
.drop_item = o2hb_heartbeat_group_drop_item,
};
-static struct config_item_type o2hb_heartbeat_group_type = {
+static const struct config_item_type o2hb_heartbeat_group_type = {
.ct_group_ops = &o2hb_heartbeat_group_group_ops,
- .ct_item_ops = &o2hb_heartbeat_group_item_ops,
.ct_attrs = o2hb_heartbeat_group_attrs,
.ct_owner = THIS_MODULE,
};
@@ -2482,7 +2365,7 @@ static int o2hb_region_inc_user(const char *region_uuid)
if (o2hb_dependent_users > 1)
goto unlock;
- if (o2hb_pop_count(&o2hb_quorum_region_bitmap,
+ if (bitmap_weight(o2hb_quorum_region_bitmap,
O2NM_MAX_REGIONS) <= O2HB_PIN_CUT_OFF)
ret = o2hb_region_pin(NULL);
@@ -2491,7 +2374,7 @@ unlock:
return ret;
}
-void o2hb_region_dec_user(const char *region_uuid)
+static void o2hb_region_dec_user(const char *region_uuid)
{
spin_lock(&o2hb_live_lock);
@@ -2516,8 +2399,7 @@ unlock:
int o2hb_register_callback(const char *region_uuid,
struct o2hb_callback_func *hc)
{
- struct o2hb_callback_func *tmp;
- struct list_head *iter;
+ struct o2hb_callback_func *f;
struct o2hb_callback *hbcall;
int ret;
@@ -2540,10 +2422,9 @@ int o2hb_register_callback(const char *region_uuid,
down_write(&o2hb_callback_sem);
- list_for_each(iter, &hbcall->list) {
- tmp = list_entry(iter, struct o2hb_callback_func, hc_item);
- if (hc->hc_priority < tmp->hc_priority) {
- list_add_tail(&hc->hc_item, iter);
+ list_for_each_entry(f, &hbcall->list, hc_item) {
+ if (hc->hc_priority < f->hc_priority) {
+ list_add_tail(&hc->hc_item, &f->hc_item);
break;
}
}
@@ -2582,11 +2463,13 @@ void o2hb_unregister_callback(const char *region_uuid,
}
EXPORT_SYMBOL_GPL(o2hb_unregister_callback);
-int o2hb_check_node_heartbeating(u8 node_num)
+int o2hb_check_node_heartbeating_no_sem(u8 node_num)
{
unsigned long testing_map[BITS_TO_LONGS(O2NM_MAX_NODES)];
- o2hb_fill_node_map(testing_map, sizeof(testing_map));
+ spin_lock(&o2hb_live_lock);
+ o2hb_fill_node_map_from_callback(testing_map, O2NM_MAX_NODES);
+ spin_unlock(&o2hb_live_lock);
if (!test_bit(node_num, testing_map)) {
mlog(ML_HEARTBEAT,
"node (%u) does not have heartbeating enabled.\n",
@@ -2596,13 +2479,13 @@ int o2hb_check_node_heartbeating(u8 node_num)
return 1;
}
-EXPORT_SYMBOL_GPL(o2hb_check_node_heartbeating);
+EXPORT_SYMBOL_GPL(o2hb_check_node_heartbeating_no_sem);
int o2hb_check_node_heartbeating_from_callback(u8 node_num)
{
unsigned long testing_map[BITS_TO_LONGS(O2NM_MAX_NODES)];
- o2hb_fill_node_map_from_callback(testing_map, sizeof(testing_map));
+ o2hb_fill_node_map_from_callback(testing_map, O2NM_MAX_NODES);
if (!test_bit(node_num, testing_map)) {
mlog(ML_HEARTBEAT,
"node (%u) does not have heartbeating enabled.\n",
@@ -2614,23 +2497,6 @@ int o2hb_check_node_heartbeating_from_callback(u8 node_num)
}
EXPORT_SYMBOL_GPL(o2hb_check_node_heartbeating_from_callback);
-/* Makes sure our local node is configured with a node number, and is
- * heartbeating. */
-int o2hb_check_local_node_heartbeating(void)
-{
- u8 node_num;
-
- /* if this node was set then we have networking */
- node_num = o2nm_this_node();
- if (node_num == O2NM_MAX_NODES) {
- mlog(ML_HEARTBEAT, "this node has not been configured.\n");
- return 0;
- }
-
- return o2hb_check_node_heartbeating(node_num);
-}
-EXPORT_SYMBOL_GPL(o2hb_check_local_node_heartbeating);
-
/*
* this is just a hack until we get the plumbing which flips file systems
* read only and drops the hb ref instead of killing the node dead.
generated by cgit (git 2.34.1) at 2025-12-25 12:31:56 +0000