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authorMark Fasheh <mark.fasheh@oracle.com>2007-09-24 18:56:19 -0400
committerMark Fasheh <mark.fasheh@oracle.com>2008-01-25 17:45:34 -0500
commit34d024f84345807bf44163fac84e921513dde323 (patch)
treeaef303ae5feeb42cb8791acc1c0b8a74f0a97674 /fs/ocfs2
parent6f7b056ea9c6fa978c79ca626eff43549df94dbb (diff)
ocfs2: Remove mount/unmount votes
The node maps that are set/unset by these votes are no longer relevant, thus we can remove the mount and umount votes. Since those are the last two remaining votes, we can also remove the entire vote infrastructure. The vote thread has been renamed to the downconvert thread, and the small amount of functionality related to managing it has been moved into fs/ocfs2/dlmglue.c. All references to votes have been removed or updated. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
Diffstat (limited to 'fs/ocfs2')
-rw-r--r--fs/ocfs2/Makefile3
-rw-r--r--fs/ocfs2/cluster/tcp_internal.h5
-rw-r--r--fs/ocfs2/dcache.c8
-rw-r--r--fs/ocfs2/dlmglue.c164
-rw-r--r--fs/ocfs2/dlmglue.h5
-rw-r--r--fs/ocfs2/heartbeat.c7
-rw-r--r--fs/ocfs2/inode.c36
-rw-r--r--fs/ocfs2/journal.c15
-rw-r--r--fs/ocfs2/namei.c10
-rw-r--r--fs/ocfs2/ocfs2.h25
-rw-r--r--fs/ocfs2/slot_map.c19
-rw-r--r--fs/ocfs2/slot_map.h2
-rw-r--r--fs/ocfs2/super.c43
-rw-r--r--fs/ocfs2/vote.c756
-rw-r--r--fs/ocfs2/vote.h48
15 files changed, 179 insertions, 967 deletions
diff --git a/fs/ocfs2/Makefile b/fs/ocfs2/Makefile
index 9fb8132f19b0..d2057e7fbda7 100644
--- a/fs/ocfs2/Makefile
+++ b/fs/ocfs2/Makefile
@@ -27,8 +27,7 @@ ocfs2-objs := \
27 symlink.o \ 27 symlink.o \
28 sysfile.o \ 28 sysfile.o \
29 uptodate.o \ 29 uptodate.o \
30 ver.o \ 30 ver.o
31 vote.o
32 31
33obj-$(CONFIG_OCFS2_FS) += cluster/ 32obj-$(CONFIG_OCFS2_FS) += cluster/
34obj-$(CONFIG_OCFS2_FS) += dlm/ 33obj-$(CONFIG_OCFS2_FS) += dlm/
diff --git a/fs/ocfs2/cluster/tcp_internal.h b/fs/ocfs2/cluster/tcp_internal.h
index 9606111fe89d..79bd6665b3ca 100644
--- a/fs/ocfs2/cluster/tcp_internal.h
+++ b/fs/ocfs2/cluster/tcp_internal.h
@@ -38,6 +38,9 @@
38 * locking semantics of the file system using the protocol. It should 38 * locking semantics of the file system using the protocol. It should
39 * be somewhere else, I'm sure, but right now it isn't. 39 * be somewhere else, I'm sure, but right now it isn't.
40 * 40 *
41 * New in version 9:
42 * - All votes removed
43 *
41 * New in version 8: 44 * New in version 8:
42 * - Replace delete inode votes with a cluster lock 45 * - Replace delete inode votes with a cluster lock
43 * 46 *
@@ -60,7 +63,7 @@
60 * - full 64 bit i_size in the metadata lock lvbs 63 * - full 64 bit i_size in the metadata lock lvbs
61 * - introduction of "rw" lock and pushing meta/data locking down 64 * - introduction of "rw" lock and pushing meta/data locking down
62 */ 65 */
63#define O2NET_PROTOCOL_VERSION 8ULL 66#define O2NET_PROTOCOL_VERSION 9ULL
64struct o2net_handshake { 67struct o2net_handshake {
65 __be64 protocol_version; 68 __be64 protocol_version;
66 __be64 connector_id; 69 __be64 connector_id;
diff --git a/fs/ocfs2/dcache.c b/fs/ocfs2/dcache.c
index 9923278ea6d4..b1cc7c381e88 100644
--- a/fs/ocfs2/dcache.c
+++ b/fs/ocfs2/dcache.c
@@ -128,9 +128,9 @@ static int ocfs2_match_dentry(struct dentry *dentry,
128/* 128/*
129 * Walk the inode alias list, and find a dentry which has a given 129 * Walk the inode alias list, and find a dentry which has a given
130 * parent. ocfs2_dentry_attach_lock() wants to find _any_ alias as it 130 * parent. ocfs2_dentry_attach_lock() wants to find _any_ alias as it
131 * is looking for a dentry_lock reference. The vote thread is looking 131 * is looking for a dentry_lock reference. The downconvert thread is
132 * to unhash aliases, so we allow it to skip any that already have 132 * looking to unhash aliases, so we allow it to skip any that already
133 * that property. 133 * have that property.
134 */ 134 */
135struct dentry *ocfs2_find_local_alias(struct inode *inode, 135struct dentry *ocfs2_find_local_alias(struct inode *inode,
136 u64 parent_blkno, 136 u64 parent_blkno,
@@ -266,7 +266,7 @@ int ocfs2_dentry_attach_lock(struct dentry *dentry,
266 dl->dl_count = 0; 266 dl->dl_count = 0;
267 /* 267 /*
268 * Does this have to happen below, for all attaches, in case 268 * Does this have to happen below, for all attaches, in case
269 * the struct inode gets blown away by votes? 269 * the struct inode gets blown away by the downconvert thread?
270 */ 270 */
271 dl->dl_inode = igrab(inode); 271 dl->dl_inode = igrab(inode);
272 dl->dl_parent_blkno = parent_blkno; 272 dl->dl_parent_blkno = parent_blkno;
diff --git a/fs/ocfs2/dlmglue.c b/fs/ocfs2/dlmglue.c
index 4e97dcceaf8f..b3068ade3f7b 100644
--- a/fs/ocfs2/dlmglue.c
+++ b/fs/ocfs2/dlmglue.c
@@ -55,7 +55,6 @@
55#include "slot_map.h" 55#include "slot_map.h"
56#include "super.h" 56#include "super.h"
57#include "uptodate.h" 57#include "uptodate.h"
58#include "vote.h"
59 58
60#include "buffer_head_io.h" 59#include "buffer_head_io.h"
61 60
@@ -153,10 +152,10 @@ struct ocfs2_lock_res_ops {
153 struct ocfs2_super * (*get_osb)(struct ocfs2_lock_res *); 152 struct ocfs2_super * (*get_osb)(struct ocfs2_lock_res *);
154 153
155 /* 154 /*
156 * Optionally called in the downconvert (or "vote") thread 155 * Optionally called in the downconvert thread after a
157 * after a successful downconvert. The lockres will not be 156 * successful downconvert. The lockres will not be referenced
158 * referenced after this callback is called, so it is safe to 157 * after this callback is called, so it is safe to free
159 * free memory, etc. 158 * memory, etc.
160 * 159 *
161 * The exact semantics of when this is called are controlled 160 * The exact semantics of when this is called are controlled
162 * by ->downconvert_worker() 161 * by ->downconvert_worker()
@@ -310,8 +309,9 @@ static inline void ocfs2_recover_from_dlm_error(struct ocfs2_lock_res *lockres,
310 "resource %s: %s\n", dlm_errname(_stat), _func, \ 309 "resource %s: %s\n", dlm_errname(_stat), _func, \
311 _lockres->l_name, dlm_errmsg(_stat)); \ 310 _lockres->l_name, dlm_errmsg(_stat)); \
312} while (0) 311} while (0)
313static void ocfs2_vote_on_unlock(struct ocfs2_super *osb, 312static int ocfs2_downconvert_thread(void *arg);
314 struct ocfs2_lock_res *lockres); 313static void ocfs2_downconvert_on_unlock(struct ocfs2_super *osb,
314 struct ocfs2_lock_res *lockres);
315static int ocfs2_meta_lock_update(struct inode *inode, 315static int ocfs2_meta_lock_update(struct inode *inode,
316 struct buffer_head **bh); 316 struct buffer_head **bh);
317static void ocfs2_drop_osb_locks(struct ocfs2_super *osb); 317static void ocfs2_drop_osb_locks(struct ocfs2_super *osb);
@@ -732,7 +732,7 @@ static void ocfs2_blocking_ast(void *opaque, int level)
732 732
733 wake_up(&lockres->l_event); 733 wake_up(&lockres->l_event);
734 734
735 ocfs2_kick_vote_thread(osb); 735 ocfs2_wake_downconvert_thread(osb);
736} 736}
737 737
738static void ocfs2_locking_ast(void *opaque) 738static void ocfs2_locking_ast(void *opaque)
@@ -1089,7 +1089,7 @@ static void ocfs2_cluster_unlock(struct ocfs2_super *osb,
1089 mlog_entry_void(); 1089 mlog_entry_void();
1090 spin_lock_irqsave(&lockres->l_lock, flags); 1090 spin_lock_irqsave(&lockres->l_lock, flags);
1091 ocfs2_dec_holders(lockres, level); 1091 ocfs2_dec_holders(lockres, level);
1092 ocfs2_vote_on_unlock(osb, lockres); 1092 ocfs2_downconvert_on_unlock(osb, lockres);
1093 spin_unlock_irqrestore(&lockres->l_lock, flags); 1093 spin_unlock_irqrestore(&lockres->l_lock, flags);
1094 mlog_exit_void(); 1094 mlog_exit_void();
1095} 1095}
@@ -1372,15 +1372,15 @@ int ocfs2_data_lock_with_page(struct inode *inode,
1372 return ret; 1372 return ret;
1373} 1373}
1374 1374
1375static void ocfs2_vote_on_unlock(struct ocfs2_super *osb, 1375static void ocfs2_downconvert_on_unlock(struct ocfs2_super *osb,
1376 struct ocfs2_lock_res *lockres) 1376 struct ocfs2_lock_res *lockres)
1377{ 1377{
1378 int kick = 0; 1378 int kick = 0;
1379 1379
1380 mlog_entry_void(); 1380 mlog_entry_void();
1381 1381
1382 /* If we know that another node is waiting on our lock, kick 1382 /* If we know that another node is waiting on our lock, kick
1383 * the vote thread * pre-emptively when we reach a release 1383 * the downconvert thread * pre-emptively when we reach a release
1384 * condition. */ 1384 * condition. */
1385 if (lockres->l_flags & OCFS2_LOCK_BLOCKED) { 1385 if (lockres->l_flags & OCFS2_LOCK_BLOCKED) {
1386 switch(lockres->l_blocking) { 1386 switch(lockres->l_blocking) {
@@ -1398,7 +1398,7 @@ static void ocfs2_vote_on_unlock(struct ocfs2_super *osb,
1398 } 1398 }
1399 1399
1400 if (kick) 1400 if (kick)
1401 ocfs2_kick_vote_thread(osb); 1401 ocfs2_wake_downconvert_thread(osb);
1402 1402
1403 mlog_exit_void(); 1403 mlog_exit_void();
1404} 1404}
@@ -1832,19 +1832,20 @@ bail:
1832} 1832}
1833 1833
1834/* 1834/*
1835 * This is working around a lock inversion between tasks acquiring DLM locks 1835 * This is working around a lock inversion between tasks acquiring DLM
1836 * while holding a page lock and the vote thread which blocks dlm lock acquiry 1836 * locks while holding a page lock and the downconvert thread which
1837 * while acquiring page locks. 1837 * blocks dlm lock acquiry while acquiring page locks.
1838 * 1838 *
1839 * ** These _with_page variantes are only intended to be called from aop 1839 * ** These _with_page variantes are only intended to be called from aop
1840 * methods that hold page locks and return a very specific *positive* error 1840 * methods that hold page locks and return a very specific *positive* error
1841 * code that aop methods pass up to the VFS -- test for errors with != 0. ** 1841 * code that aop methods pass up to the VFS -- test for errors with != 0. **
1842 * 1842 *
1843 * The DLM is called such that it returns -EAGAIN if it would have blocked 1843 * The DLM is called such that it returns -EAGAIN if it would have
1844 * waiting for the vote thread. In that case we unlock our page so the vote 1844 * blocked waiting for the downconvert thread. In that case we unlock
1845 * thread can make progress. Once we've done this we have to return 1845 * our page so the downconvert thread can make progress. Once we've
1846 * AOP_TRUNCATED_PAGE so the aop method that called us can bubble that back up 1846 * done this we have to return AOP_TRUNCATED_PAGE so the aop method
1847 * into the VFS who will then immediately retry the aop call. 1847 * that called us can bubble that back up into the VFS who will then
1848 * immediately retry the aop call.
1848 * 1849 *
1849 * We do a blocking lock and immediate unlock before returning, though, so that 1850 * We do a blocking lock and immediate unlock before returning, though, so that
1850 * the lock has a great chance of being cached on this node by the time the VFS 1851 * the lock has a great chance of being cached on this node by the time the VFS
@@ -2320,11 +2321,11 @@ int ocfs2_dlm_init(struct ocfs2_super *osb)
2320 goto bail; 2321 goto bail;
2321 } 2322 }
2322 2323
2323 /* launch vote thread */ 2324 /* launch downconvert thread */
2324 osb->vote_task = kthread_run(ocfs2_vote_thread, osb, "ocfs2vote"); 2325 osb->dc_task = kthread_run(ocfs2_downconvert_thread, osb, "ocfs2dc");
2325 if (IS_ERR(osb->vote_task)) { 2326 if (IS_ERR(osb->dc_task)) {
2326 status = PTR_ERR(osb->vote_task); 2327 status = PTR_ERR(osb->dc_task);
2327 osb->vote_task = NULL; 2328 osb->dc_task = NULL;
2328 mlog_errno(status); 2329 mlog_errno(status);
2329 goto bail; 2330 goto bail;
2330 } 2331 }
@@ -2353,8 +2354,8 @@ local:
2353bail: 2354bail:
2354 if (status < 0) { 2355 if (status < 0) {
2355 ocfs2_dlm_shutdown_debug(osb); 2356 ocfs2_dlm_shutdown_debug(osb);
2356 if (osb->vote_task) 2357 if (osb->dc_task)
2357 kthread_stop(osb->vote_task); 2358 kthread_stop(osb->dc_task);
2358 } 2359 }
2359 2360
2360 mlog_exit(status); 2361 mlog_exit(status);
@@ -2369,9 +2370,9 @@ void ocfs2_dlm_shutdown(struct ocfs2_super *osb)
2369 2370
2370 ocfs2_drop_osb_locks(osb); 2371 ocfs2_drop_osb_locks(osb);
2371 2372
2372 if (osb->vote_task) { 2373 if (osb->dc_task) {
2373 kthread_stop(osb->vote_task); 2374 kthread_stop(osb->dc_task);
2374 osb->vote_task = NULL; 2375 osb->dc_task = NULL;
2375 } 2376 }
2376 2377
2377 ocfs2_lock_res_free(&osb->osb_super_lockres); 2378 ocfs2_lock_res_free(&osb->osb_super_lockres);
@@ -2527,7 +2528,7 @@ out:
2527 2528
2528/* Mark the lockres as being dropped. It will no longer be 2529/* Mark the lockres as being dropped. It will no longer be
2529 * queued if blocking, but we still may have to wait on it 2530 * queued if blocking, but we still may have to wait on it
2530 * being dequeued from the vote thread before we can consider 2531 * being dequeued from the downconvert thread before we can consider
2531 * it safe to drop. 2532 * it safe to drop.
2532 * 2533 *
2533 * You can *not* attempt to call cluster_lock on this lockres anymore. */ 2534 * You can *not* attempt to call cluster_lock on this lockres anymore. */
@@ -2903,7 +2904,7 @@ static void ocfs2_set_meta_lvb(struct ocfs2_lock_res *lockres)
2903 2904
2904/* 2905/*
2905 * Does the final reference drop on our dentry lock. Right now this 2906 * Does the final reference drop on our dentry lock. Right now this
2906 * happens in the vote thread, but we could choose to simplify the 2907 * happens in the downconvert thread, but we could choose to simplify the
2907 * dlmglue API and push these off to the ocfs2_wq in the future. 2908 * dlmglue API and push these off to the ocfs2_wq in the future.
2908 */ 2909 */
2909static void ocfs2_dentry_post_unlock(struct ocfs2_super *osb, 2910static void ocfs2_dentry_post_unlock(struct ocfs2_super *osb,
@@ -3042,7 +3043,7 @@ void ocfs2_process_blocked_lock(struct ocfs2_super *osb,
3042 mlog(0, "lockres %s blocked.\n", lockres->l_name); 3043 mlog(0, "lockres %s blocked.\n", lockres->l_name);
3043 3044
3044 /* Detect whether a lock has been marked as going away while 3045 /* Detect whether a lock has been marked as going away while
3045 * the vote thread was processing other things. A lock can 3046 * the downconvert thread was processing other things. A lock can
3046 * still be marked with OCFS2_LOCK_FREEING after this check, 3047 * still be marked with OCFS2_LOCK_FREEING after this check,
3047 * but short circuiting here will still save us some 3048 * but short circuiting here will still save us some
3048 * performance. */ 3049 * performance. */
@@ -3091,13 +3092,104 @@ static void ocfs2_schedule_blocked_lock(struct ocfs2_super *osb,
3091 3092
3092 lockres_or_flags(lockres, OCFS2_LOCK_QUEUED); 3093 lockres_or_flags(lockres, OCFS2_LOCK_QUEUED);
3093 3094
3094 spin_lock(&osb->vote_task_lock); 3095 spin_lock(&osb->dc_task_lock);
3095 if (list_empty(&lockres->l_blocked_list)) { 3096 if (list_empty(&lockres->l_blocked_list)) {
3096 list_add_tail(&lockres->l_blocked_list, 3097 list_add_tail(&lockres->l_blocked_list,
3097 &osb->blocked_lock_list); 3098 &osb->blocked_lock_list);
3098 osb->blocked_lock_count++; 3099 osb->blocked_lock_count++;
3099 } 3100 }
3100 spin_unlock(&osb->vote_task_lock); 3101 spin_unlock(&osb->dc_task_lock);
3101 3102
3102 mlog_exit_void(); 3103 mlog_exit_void();
3103} 3104}
3105
3106static void ocfs2_downconvert_thread_do_work(struct ocfs2_super *osb)
3107{
3108 unsigned long processed;
3109 struct ocfs2_lock_res *lockres;
3110
3111 mlog_entry_void();
3112
3113 spin_lock(&osb->dc_task_lock);
3114 /* grab this early so we know to try again if a state change and
3115 * wake happens part-way through our work */
3116 osb->dc_work_sequence = osb->dc_wake_sequence;
3117
3118 processed = osb->blocked_lock_count;
3119 while (processed) {
3120 BUG_ON(list_empty(&osb->blocked_lock_list));
3121
3122 lockres = list_entry(osb->blocked_lock_list.next,
3123 struct ocfs2_lock_res, l_blocked_list);
3124 list_del_init(&lockres->l_blocked_list);
3125 osb->blocked_lock_count--;
3126 spin_unlock(&osb->dc_task_lock);
3127
3128 BUG_ON(!processed);
3129 processed--;
3130
3131 ocfs2_process_blocked_lock(osb, lockres);
3132
3133 spin_lock(&osb->dc_task_lock);
3134 }
3135 spin_unlock(&osb->dc_task_lock);
3136
3137 mlog_exit_void();
3138}
3139
3140static int ocfs2_downconvert_thread_lists_empty(struct ocfs2_super *osb)
3141{
3142 int empty = 0;
3143
3144 spin_lock(&osb->dc_task_lock);
3145 if (list_empty(&osb->blocked_lock_list))
3146 empty = 1;
3147
3148 spin_unlock(&osb->dc_task_lock);
3149 return empty;
3150}
3151
3152static int ocfs2_downconvert_thread_should_wake(struct ocfs2_super *osb)
3153{
3154 int should_wake = 0;
3155
3156 spin_lock(&osb->dc_task_lock);
3157 if (osb->dc_work_sequence != osb->dc_wake_sequence)
3158 should_wake = 1;
3159 spin_unlock(&osb->dc_task_lock);
3160
3161 return should_wake;
3162}
3163
3164int ocfs2_downconvert_thread(void *arg)
3165{
3166 int status = 0;
3167 struct ocfs2_super *osb = arg;
3168
3169 /* only quit once we've been asked to stop and there is no more
3170 * work available */
3171 while (!(kthread_should_stop() &&
3172 ocfs2_downconvert_thread_lists_empty(osb))) {
3173
3174 wait_event_interruptible(osb->dc_event,
3175 ocfs2_downconvert_thread_should_wake(osb) ||
3176 kthread_should_stop());
3177
3178 mlog(0, "downconvert_thread: awoken\n");
3179
3180 ocfs2_downconvert_thread_do_work(osb);
3181 }
3182
3183 osb->dc_task = NULL;
3184 return status;
3185}
3186
3187void ocfs2_wake_downconvert_thread(struct ocfs2_super *osb)
3188{
3189 spin_lock(&osb->dc_task_lock);
3190 /* make sure the voting thread gets a swipe at whatever changes
3191 * the caller may have made to the voting state */
3192 osb->dc_wake_sequence++;
3193 spin_unlock(&osb->dc_task_lock);
3194 wake_up(&osb->dc_event);
3195}
diff --git a/fs/ocfs2/dlmglue.h b/fs/ocfs2/dlmglue.h
index 87a785e41205..931f6ee55146 100644
--- a/fs/ocfs2/dlmglue.h
+++ b/fs/ocfs2/dlmglue.h
@@ -54,7 +54,7 @@ struct ocfs2_meta_lvb {
54#define OCFS2_META_LOCK_RECOVERY (0x01) 54#define OCFS2_META_LOCK_RECOVERY (0x01)
55/* Instruct the dlm not to queue ourselves on the other node. */ 55/* Instruct the dlm not to queue ourselves on the other node. */
56#define OCFS2_META_LOCK_NOQUEUE (0x02) 56#define OCFS2_META_LOCK_NOQUEUE (0x02)
57/* don't block waiting for the vote thread, instead return -EAGAIN */ 57/* don't block waiting for the downconvert thread, instead return -EAGAIN */
58#define OCFS2_LOCK_NONBLOCK (0x04) 58#define OCFS2_LOCK_NONBLOCK (0x04)
59 59
60int ocfs2_dlm_init(struct ocfs2_super *osb); 60int ocfs2_dlm_init(struct ocfs2_super *osb);
@@ -112,9 +112,10 @@ void ocfs2_mark_lockres_freeing(struct ocfs2_lock_res *lockres);
112void ocfs2_simple_drop_lockres(struct ocfs2_super *osb, 112void ocfs2_simple_drop_lockres(struct ocfs2_super *osb,
113 struct ocfs2_lock_res *lockres); 113 struct ocfs2_lock_res *lockres);
114 114
115/* for the vote thread */ 115/* for the downconvert thread */
116void ocfs2_process_blocked_lock(struct ocfs2_super *osb, 116void ocfs2_process_blocked_lock(struct ocfs2_super *osb,
117 struct ocfs2_lock_res *lockres); 117 struct ocfs2_lock_res *lockres);
118void ocfs2_wake_downconvert_thread(struct ocfs2_super *osb);
118 119
119struct ocfs2_dlm_debug *ocfs2_new_dlm_debug(void); 120struct ocfs2_dlm_debug *ocfs2_new_dlm_debug(void);
120void ocfs2_put_dlm_debug(struct ocfs2_dlm_debug *dlm_debug); 121void ocfs2_put_dlm_debug(struct ocfs2_dlm_debug *dlm_debug);
diff --git a/fs/ocfs2/heartbeat.c b/fs/ocfs2/heartbeat.c
index 6239fc52790c..c0efd9489fe8 100644
--- a/fs/ocfs2/heartbeat.c
+++ b/fs/ocfs2/heartbeat.c
@@ -41,7 +41,6 @@
41#include "heartbeat.h" 41#include "heartbeat.h"
42#include "inode.h" 42#include "inode.h"
43#include "journal.h" 43#include "journal.h"
44#include "vote.h"
45 44
46#include "buffer_head_io.h" 45#include "buffer_head_io.h"
47 46
@@ -58,9 +57,7 @@ static void __ocfs2_node_map_set(struct ocfs2_node_map *target,
58void ocfs2_init_node_maps(struct ocfs2_super *osb) 57void ocfs2_init_node_maps(struct ocfs2_super *osb)
59{ 58{
60 spin_lock_init(&osb->node_map_lock); 59 spin_lock_init(&osb->node_map_lock);
61 ocfs2_node_map_init(&osb->mounted_map);
62 ocfs2_node_map_init(&osb->recovery_map); 60 ocfs2_node_map_init(&osb->recovery_map);
63 ocfs2_node_map_init(&osb->umount_map);
64 ocfs2_node_map_init(&osb->osb_recovering_orphan_dirs); 61 ocfs2_node_map_init(&osb->osb_recovering_orphan_dirs);
65} 62}
66 63
@@ -82,8 +79,6 @@ static void ocfs2_do_node_down(int node_num,
82 } 79 }
83 80
84 ocfs2_recovery_thread(osb, node_num); 81 ocfs2_recovery_thread(osb, node_num);
85
86 ocfs2_remove_node_from_vote_queues(osb, node_num);
87} 82}
88 83
89/* Called from the dlm when it's about to evict a node. We may also 84/* Called from the dlm when it's about to evict a node. We may also
@@ -268,8 +263,6 @@ int ocfs2_recovery_map_set(struct ocfs2_super *osb,
268 263
269 spin_lock(&osb->node_map_lock); 264 spin_lock(&osb->node_map_lock);
270 265
271 __ocfs2_node_map_clear_bit(&osb->mounted_map, num);
272
273 if (!test_bit(num, osb->recovery_map.map)) { 266 if (!test_bit(num, osb->recovery_map.map)) {
274 __ocfs2_node_map_set_bit(&osb->recovery_map, num); 267 __ocfs2_node_map_set_bit(&osb->recovery_map, num);
275 set = 1; 268 set = 1;
diff --git a/fs/ocfs2/inode.c b/fs/ocfs2/inode.c
index ebb2bbe30f35..86cf073996b5 100644
--- a/fs/ocfs2/inode.c
+++ b/fs/ocfs2/inode.c
@@ -49,7 +49,6 @@
49#include "symlink.h" 49#include "symlink.h"
50#include "sysfile.h" 50#include "sysfile.h"
51#include "uptodate.h" 51#include "uptodate.h"
52#include "vote.h"
53 52
54#include "buffer_head_io.h" 53#include "buffer_head_io.h"
55 54
@@ -718,8 +717,8 @@ static int ocfs2_wipe_inode(struct inode *inode,
718 } 717 }
719 718
720 /* we do this while holding the orphan dir lock because we 719 /* we do this while holding the orphan dir lock because we
721 * don't want recovery being run from another node to vote for 720 * don't want recovery being run from another node to try an
722 * an inode delete on us -- this will result in two nodes 721 * inode delete underneath us -- this will result in two nodes
723 * truncating the same file! */ 722 * truncating the same file! */
724 status = ocfs2_truncate_for_delete(osb, inode, di_bh); 723 status = ocfs2_truncate_for_delete(osb, inode, di_bh);
725 if (status < 0) { 724 if (status < 0) {
@@ -744,7 +743,7 @@ bail:
744} 743}
745 744
746/* There is a series of simple checks that should be done before a 745/* There is a series of simple checks that should be done before a
747 * vote is even considered. Encapsulate those in this function. */ 746 * trylock is even considered. Encapsulate those in this function. */
748static int ocfs2_inode_is_valid_to_delete(struct inode *inode) 747static int ocfs2_inode_is_valid_to_delete(struct inode *inode)
749{ 748{
750 int ret = 0; 749 int ret = 0;
@@ -758,14 +757,14 @@ static int ocfs2_inode_is_valid_to_delete(struct inode *inode)
758 goto bail; 757 goto bail;
759 } 758 }
760 759
761 /* If we're coming from process_vote we can't go into our own 760 /* If we're coming from downconvert_thread we can't go into our own
762 * voting [hello, deadlock city!], so unforuntately we just 761 * voting [hello, deadlock city!], so unforuntately we just
763 * have to skip deleting this guy. That's OK though because 762 * have to skip deleting this guy. That's OK though because
764 * the node who's doing the actual deleting should handle it 763 * the node who's doing the actual deleting should handle it
765 * anyway. */ 764 * anyway. */
766 if (current == osb->vote_task) { 765 if (current == osb->dc_task) {
767 mlog(0, "Skipping delete of %lu because we're currently " 766 mlog(0, "Skipping delete of %lu because we're currently "
768 "in process_vote\n", inode->i_ino); 767 "in downconvert\n", inode->i_ino);
769 goto bail; 768 goto bail;
770 } 769 }
771 770
@@ -779,10 +778,9 @@ static int ocfs2_inode_is_valid_to_delete(struct inode *inode)
779 goto bail_unlock; 778 goto bail_unlock;
780 } 779 }
781 780
782 /* If we have voted "yes" on the wipe of this inode for 781 /* If we have allowd wipe of this inode for another node, it
783 * another node, it will be marked here so we can safely skip 782 * will be marked here so we can safely skip it. Recovery will
784 * it. Recovery will cleanup any inodes we might inadvertantly 783 * cleanup any inodes we might inadvertantly skip here. */
785 * skip here. */
786 if (oi->ip_flags & OCFS2_INODE_SKIP_DELETE) { 784 if (oi->ip_flags & OCFS2_INODE_SKIP_DELETE) {
787 mlog(0, "Skipping delete of %lu because another node " 785 mlog(0, "Skipping delete of %lu because another node "
788 "has done this for us.\n", inode->i_ino); 786 "has done this for us.\n", inode->i_ino);
@@ -929,7 +927,7 @@ void ocfs2_delete_inode(struct inode *inode)
929 927
930 /* Lock down the inode. This gives us an up to date view of 928 /* Lock down the inode. This gives us an up to date view of
931 * it's metadata (for verification), and allows us to 929 * it's metadata (for verification), and allows us to
932 * serialize delete_inode votes. 930 * serialize delete_inode on multiple nodes.
933 * 931 *
934 * Even though we might be doing a truncate, we don't take the 932 * Even though we might be doing a truncate, we don't take the
935 * allocation lock here as it won't be needed - nobody will 933 * allocation lock here as it won't be needed - nobody will
@@ -947,15 +945,15 @@ void ocfs2_delete_inode(struct inode *inode)
947 * before we go ahead and wipe the inode. */ 945 * before we go ahead and wipe the inode. */
948 status = ocfs2_query_inode_wipe(inode, di_bh, &wipe); 946 status = ocfs2_query_inode_wipe(inode, di_bh, &wipe);
949 if (!wipe || status < 0) { 947 if (!wipe || status < 0) {
950 /* Error and inode busy vote both mean we won't be 948 /* Error and remote inode busy both mean we won't be
951 * removing the inode, so they take almost the same 949 * removing the inode, so they take almost the same
952 * path. */ 950 * path. */
953 if (status < 0) 951 if (status < 0)
954 mlog_errno(status); 952 mlog_errno(status);
955 953
956 /* Someone in the cluster has voted to not wipe this 954 /* Someone in the cluster has disallowed a wipe of
957 * inode, or it was never completely orphaned. Write 955 * this inode, or it was never completely
958 * out the pages and exit now. */ 956 * orphaned. Write out the pages and exit now. */
959 ocfs2_cleanup_delete_inode(inode, 1); 957 ocfs2_cleanup_delete_inode(inode, 1);
960 goto bail_unlock_inode; 958 goto bail_unlock_inode;
961 } 959 }
@@ -1008,12 +1006,12 @@ void ocfs2_clear_inode(struct inode *inode)
1008 mlog_bug_on_msg(OCFS2_SB(inode->i_sb) == NULL, 1006 mlog_bug_on_msg(OCFS2_SB(inode->i_sb) == NULL,
1009 "Inode=%lu\n", inode->i_ino); 1007 "Inode=%lu\n", inode->i_ino);
1010 1008
1011 /* For remove delete_inode vote, we hold open lock before, 1009 /* To preven remote deletes we hold open lock before, now it
1012 * now it is time to unlock PR and EX open locks. */ 1010 * is time to unlock PR and EX open locks. */
1013 ocfs2_open_unlock(inode); 1011 ocfs2_open_unlock(inode);
1014 1012
1015 /* Do these before all the other work so that we don't bounce 1013 /* Do these before all the other work so that we don't bounce
1016 * the vote thread while waiting to destroy the locks. */ 1014 * the downconvert thread while waiting to destroy the locks. */
1017 ocfs2_mark_lockres_freeing(&oi->ip_rw_lockres); 1015 ocfs2_mark_lockres_freeing(&oi->ip_rw_lockres);
1018 ocfs2_mark_lockres_freeing(&oi->ip_meta_lockres); 1016 ocfs2_mark_lockres_freeing(&oi->ip_meta_lockres);
1019 ocfs2_mark_lockres_freeing(&oi->ip_data_lockres); 1017 ocfs2_mark_lockres_freeing(&oi->ip_data_lockres);
diff --git a/fs/ocfs2/journal.c b/fs/ocfs2/journal.c
index 8d81f6c1b877..f2ebe2eb3c21 100644
--- a/fs/ocfs2/journal.c
+++ b/fs/ocfs2/journal.c
@@ -44,7 +44,6 @@
44#include "localalloc.h" 44#include "localalloc.h"
45#include "slot_map.h" 45#include "slot_map.h"
46#include "super.h" 46#include "super.h"
47#include "vote.h"
48#include "sysfile.h" 47#include "sysfile.h"
49 48
50#include "buffer_head_io.h" 49#include "buffer_head_io.h"
@@ -103,7 +102,7 @@ static int ocfs2_commit_cache(struct ocfs2_super *osb)
103 mlog(0, "commit_thread: flushed transaction %lu (%u handles)\n", 102 mlog(0, "commit_thread: flushed transaction %lu (%u handles)\n",
104 journal->j_trans_id, flushed); 103 journal->j_trans_id, flushed);
105 104
106 ocfs2_kick_vote_thread(osb); 105 ocfs2_wake_downconvert_thread(osb);
107 wake_up(&journal->j_checkpointed); 106 wake_up(&journal->j_checkpointed);
108finally: 107finally:
109 mlog_exit(status); 108 mlog_exit(status);
@@ -883,8 +882,8 @@ restart:
883 ocfs2_super_unlock(osb, 1); 882 ocfs2_super_unlock(osb, 1);
884 883
885 /* We always run recovery on our own orphan dir - the dead 884 /* We always run recovery on our own orphan dir - the dead
886 * node(s) may have voted "no" on an inode delete earlier. A 885 * node(s) may have disallowd a previos inode delete. Re-processing
887 * revote is therefore required. */ 886 * is therefore required. */
888 ocfs2_queue_recovery_completion(osb->journal, osb->slot_num, NULL, 887 ocfs2_queue_recovery_completion(osb->journal, osb->slot_num, NULL,
889 NULL); 888 NULL);
890 889
@@ -1380,10 +1379,10 @@ static int ocfs2_recover_orphans(struct ocfs2_super *osb,
1380 iter = oi->ip_next_orphan; 1379 iter = oi->ip_next_orphan;
1381 1380
1382 spin_lock(&oi->ip_lock); 1381 spin_lock(&oi->ip_lock);
1383 /* Delete voting may have set these on the assumption 1382 /* The remote delete code may have set these on the
1384 * that the other node would wipe them successfully. 1383 * assumption that the other node would wipe them
1385 * If they are still in the node's orphan dir, we need 1384 * successfully. If they are still in the node's
1386 * to reset that state. */ 1385 * orphan dir, we need to reset that state. */
1387 oi->ip_flags &= ~(OCFS2_INODE_DELETED|OCFS2_INODE_SKIP_DELETE); 1386 oi->ip_flags &= ~(OCFS2_INODE_DELETED|OCFS2_INODE_SKIP_DELETE);
1388 1387
1389 /* Set the proper information to get us going into 1388 /* Set the proper information to get us going into
diff --git a/fs/ocfs2/namei.c b/fs/ocfs2/namei.c
index 989ac2718587..6295fd6ae469 100644
--- a/fs/ocfs2/namei.c
+++ b/fs/ocfs2/namei.c
@@ -60,7 +60,6 @@
60#include "symlink.h" 60#include "symlink.h"
61#include "sysfile.h" 61#include "sysfile.h"
62#include "uptodate.h" 62#include "uptodate.h"
63#include "vote.h"
64 63
65#include "buffer_head_io.h" 64#include "buffer_head_io.h"
66 65
@@ -176,7 +175,7 @@ bail_unlock:
176 /* Don't drop the cluster lock until *after* the d_add -- 175 /* Don't drop the cluster lock until *after* the d_add --
177 * unlink on another node will message us to remove that 176 * unlink on another node will message us to remove that
178 * dentry under this lock so otherwise we can race this with 177 * dentry under this lock so otherwise we can race this with
179 * the vote thread and have a stale dentry. */ 178 * the downconvert thread and have a stale dentry. */
180 ocfs2_meta_unlock(dir, 0); 179 ocfs2_meta_unlock(dir, 0);
181 180
182bail: 181bail:
@@ -765,7 +764,7 @@ static int ocfs2_unlink(struct inode *dir,
765 764
766 status = ocfs2_remote_dentry_delete(dentry); 765 status = ocfs2_remote_dentry_delete(dentry);
767 if (status < 0) { 766 if (status < 0) {
768 /* This vote should succeed under all normal 767 /* This remote delete should succeed under all normal
769 * circumstances. */ 768 * circumstances. */
770 mlog_errno(status); 769 mlog_errno(status);
771 goto leave; 770 goto leave;
@@ -1031,8 +1030,9 @@ static int ocfs2_rename(struct inode *old_dir,
1031 1030
1032 /* 1031 /*
1033 * Aside from allowing a meta data update, the locking here 1032 * Aside from allowing a meta data update, the locking here
1034 * also ensures that the vote thread on other nodes won't have 1033 * also ensures that the downconvert thread on other nodes
1035 * to concurrently downconvert the inode and the dentry locks. 1034 * won't have to concurrently downconvert the inode and the
1035 * dentry locks.
1036 */ 1036 */
1037 status = ocfs2_meta_lock(old_inode, &old_inode_bh, 1); 1037 status = ocfs2_meta_lock(old_inode, &old_inode_bh, 1);
1038 if (status < 0) { 1038 if (status < 0) {
diff --git a/fs/ocfs2/ocfs2.h b/fs/ocfs2/ocfs2.h
index 60a23e1906b0..f8f866144c6a 100644
--- a/fs/ocfs2/ocfs2.h
+++ b/fs/ocfs2/ocfs2.h
@@ -189,9 +189,7 @@ struct ocfs2_super
189 struct ocfs2_slot_info *slot_info; 189 struct ocfs2_slot_info *slot_info;
190 190
191 spinlock_t node_map_lock; 191 spinlock_t node_map_lock;
192 struct ocfs2_node_map mounted_map;
193 struct ocfs2_node_map recovery_map; 192 struct ocfs2_node_map recovery_map;
194 struct ocfs2_node_map umount_map;
195 193
196 u64 root_blkno; 194 u64 root_blkno;
197 u64 system_dir_blkno; 195 u64 system_dir_blkno;
@@ -254,28 +252,15 @@ struct ocfs2_super
254 252
255 wait_queue_head_t recovery_event; 253 wait_queue_head_t recovery_event;
256 254
257 spinlock_t vote_task_lock; 255 spinlock_t dc_task_lock;
258 struct task_struct *vote_task; 256 struct task_struct *dc_task;
259 wait_queue_head_t vote_event; 257 wait_queue_head_t dc_event;
260 unsigned long vote_wake_sequence; 258 unsigned long dc_wake_sequence;
261 unsigned long vote_work_sequence; 259 unsigned long dc_work_sequence;
262 260
263 struct list_head blocked_lock_list; 261 struct list_head blocked_lock_list;
264 unsigned long blocked_lock_count; 262 unsigned long blocked_lock_count;
265 263
266 struct list_head vote_list;
267 int vote_count;
268
269 u32 net_key;
270 spinlock_t net_response_lock;
271 unsigned int net_response_ids;
272 struct list_head net_response_list;
273
274 struct o2hb_callback_func osb_hb_up;
275 struct o2hb_callback_func osb_hb_down;
276
277 struct list_head osb_net_handlers;
278
279 wait_queue_head_t osb_mount_event; 264 wait_queue_head_t osb_mount_event;
280 265
281 /* Truncate log info */ 266 /* Truncate log info */
diff --git a/fs/ocfs2/slot_map.c b/fs/ocfs2/slot_map.c
index af4882b62cfa..3a50ce555e64 100644
--- a/fs/ocfs2/slot_map.c
+++ b/fs/ocfs2/slot_map.c
@@ -48,25 +48,6 @@ static void __ocfs2_fill_slot(struct ocfs2_slot_info *si,
48 s16 slot_num, 48 s16 slot_num,
49 s16 node_num); 49 s16 node_num);
50 50
51/* Use the slot information we've collected to create a map of mounted
52 * nodes. Should be holding an EX on super block. assumes slot info is
53 * up to date. Note that we call this *after* we find a slot, so our
54 * own node should be set in the map too... */
55void ocfs2_populate_mounted_map(struct ocfs2_super *osb)
56{
57 int i;
58 struct ocfs2_slot_info *si = osb->slot_info;
59
60 spin_lock(&si->si_lock);
61
62 for (i = 0; i < si->si_size; i++)
63 if (si->si_global_node_nums[i] != OCFS2_INVALID_SLOT)
64 ocfs2_node_map_set_bit(osb, &osb->mounted_map,
65 si->si_global_node_nums[i]);
66
67 spin_unlock(&si->si_lock);
68}
69
70/* post the slot information on disk into our slot_info struct. */ 51/* post the slot information on disk into our slot_info struct. */
71void ocfs2_update_slot_info(struct ocfs2_slot_info *si) 52void ocfs2_update_slot_info(struct ocfs2_slot_info *si)
72{ 53{
diff --git a/fs/ocfs2/slot_map.h b/fs/ocfs2/slot_map.h
index d8c8ceed031b..1025872aaade 100644
--- a/fs/ocfs2/slot_map.h
+++ b/fs/ocfs2/slot_map.h
@@ -52,8 +52,6 @@ s16 ocfs2_node_num_to_slot(struct ocfs2_slot_info *si,
52void ocfs2_clear_slot(struct ocfs2_slot_info *si, 52void ocfs2_clear_slot(struct ocfs2_slot_info *si,
53 s16 slot_num); 53 s16 slot_num);
54 54
55void ocfs2_populate_mounted_map(struct ocfs2_super *osb);
56
57static inline int ocfs2_is_empty_slot(struct ocfs2_slot_info *si, 55static inline int ocfs2_is_empty_slot(struct ocfs2_slot_info *si,
58 int slot_num) 56 int slot_num)
59{ 57{
diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c
index 64b81b341ece..1996820488cc 100644
--- a/fs/ocfs2/super.c
+++ b/fs/ocfs2/super.c
@@ -65,7 +65,6 @@
65#include "sysfile.h" 65#include "sysfile.h"
66#include "uptodate.h" 66#include "uptodate.h"
67#include "ver.h" 67#include "ver.h"
68#include "vote.h"
69 68
70#include "buffer_head_io.h" 69#include "buffer_head_io.h"
71 70
@@ -1123,13 +1122,6 @@ static int ocfs2_mount_volume(struct super_block *sb)
1123 goto leave; 1122 goto leave;
1124 } 1123 }
1125 1124
1126 /* requires vote_thread to be running. */
1127 status = ocfs2_register_net_handlers(osb);
1128 if (status < 0) {
1129 mlog_errno(status);
1130 goto leave;
1131 }
1132
1133 status = ocfs2_super_lock(osb, 1); 1125 status = ocfs2_super_lock(osb, 1);
1134 if (status < 0) { 1126 if (status < 0) {
1135 mlog_errno(status); 1127 mlog_errno(status);
@@ -1144,8 +1136,6 @@ static int ocfs2_mount_volume(struct super_block *sb)
1144 goto leave; 1136 goto leave;
1145 } 1137 }
1146 1138
1147 ocfs2_populate_mounted_map(osb);
1148
1149 /* load all node-local system inodes */ 1139 /* load all node-local system inodes */
1150 status = ocfs2_init_local_system_inodes(osb); 1140 status = ocfs2_init_local_system_inodes(osb);
1151 if (status < 0) { 1141 if (status < 0) {
@@ -1168,15 +1158,6 @@ static int ocfs2_mount_volume(struct super_block *sb)
1168 if (ocfs2_mount_local(osb)) 1158 if (ocfs2_mount_local(osb))
1169 goto leave; 1159 goto leave;
1170 1160
1171 /* This should be sent *after* we recovered our journal as it
1172 * will cause other nodes to unmark us as needing
1173 * recovery. However, we need to send it *before* dropping the
1174 * super block lock as otherwise their recovery threads might
1175 * try to clean us up while we're live! */
1176 status = ocfs2_request_mount_vote(osb);
1177 if (status < 0)
1178 mlog_errno(status);
1179
1180leave: 1161leave:
1181 if (unlock_super) 1162 if (unlock_super)
1182 ocfs2_super_unlock(osb, 1); 1163 ocfs2_super_unlock(osb, 1);
@@ -1234,10 +1215,6 @@ static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err)
1234 mlog_errno(tmp); 1215 mlog_errno(tmp);
1235 return; 1216 return;
1236 } 1217 }
1237
1238 tmp = ocfs2_request_umount_vote(osb);
1239 if (tmp < 0)
1240 mlog_errno(tmp);
1241 } 1218 }
1242 1219
1243 if (osb->slot_num != OCFS2_INVALID_SLOT) 1220 if (osb->slot_num != OCFS2_INVALID_SLOT)
@@ -1248,11 +1225,8 @@ static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err)
1248 1225
1249 ocfs2_release_system_inodes(osb); 1226 ocfs2_release_system_inodes(osb);
1250 1227
1251 if (osb->dlm) { 1228 if (osb->dlm)
1252 ocfs2_unregister_net_handlers(osb);
1253
1254 ocfs2_dlm_shutdown(osb); 1229 ocfs2_dlm_shutdown(osb);
1255 }
1256 1230
1257 debugfs_remove(osb->osb_debug_root); 1231 debugfs_remove(osb->osb_debug_root);
1258 1232
@@ -1336,19 +1310,13 @@ static int ocfs2_initialize_super(struct super_block *sb,
1336 osb->s_sectsize_bits = blksize_bits(sector_size); 1310 osb->s_sectsize_bits = blksize_bits(sector_size);
1337 BUG_ON(!osb->s_sectsize_bits); 1311 BUG_ON(!osb->s_sectsize_bits);
1338 1312
1339 osb->net_response_ids = 0;
1340 spin_lock_init(&osb->net_response_lock);
1341 INIT_LIST_HEAD(&osb->net_response_list);
1342
1343 INIT_LIST_HEAD(&osb->osb_net_handlers);
1344 init_waitqueue_head(&osb->recovery_event); 1313 init_waitqueue_head(&osb->recovery_event);
1345 spin_lock_init(&osb->vote_task_lock); 1314 spin_lock_init(&osb->dc_task_lock);
1346 init_waitqueue_head(&osb->vote_event); 1315 init_waitqueue_head(&osb->dc_event);
1347 osb->vote_work_sequence = 0; 1316 osb->dc_work_sequence = 0;
1348 osb->vote_wake_sequence = 0; 1317 osb->dc_wake_sequence = 0;
1349 INIT_LIST_HEAD(&osb->blocked_lock_list); 1318 INIT_LIST_HEAD(&osb->blocked_lock_list);
1350 osb->blocked_lock_count = 0; 1319 osb->blocked_lock_count = 0;
1351 INIT_LIST_HEAD(&osb->vote_list);
1352 spin_lock_init(&osb->osb_lock); 1320 spin_lock_init(&osb->osb_lock);
1353 1321
1354 atomic_set(&osb->alloc_stats.moves, 0); 1322 atomic_set(&osb->alloc_stats.moves, 0);
@@ -1488,7 +1456,6 @@ static int ocfs2_initialize_super(struct super_block *sb,
1488 } 1456 }
1489 1457
1490 memcpy(&uuid_net_key, di->id2.i_super.s_uuid, sizeof(uuid_net_key)); 1458 memcpy(&uuid_net_key, di->id2.i_super.s_uuid, sizeof(uuid_net_key));
1491 osb->net_key = le32_to_cpu(uuid_net_key);
1492 1459
1493 strncpy(osb->vol_label, di->id2.i_super.s_label, 63); 1460 strncpy(osb->vol_label, di->id2.i_super.s_label, 63);
1494 osb->vol_label[63] = '\0'; 1461 osb->vol_label[63] = '\0';
diff --git a/fs/ocfs2/vote.c b/fs/ocfs2/vote.c
deleted file mode 100644
index c05358538f2b..000000000000
--- a/fs/ocfs2/vote.c
+++ /dev/null
@@ -1,756 +0,0 @@
1/* -*- mode: c; c-basic-offset: 8; -*-
2 * vim: noexpandtab sw=8 ts=8 sts=0:
3 *
4 * vote.c
5 *
6 * description here
7 *
8 * Copyright (C) 2003, 2004 Oracle. All rights reserved.
9 *
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public
12 * License as published by the Free Software Foundation; either
13 * version 2 of the License, or (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public
21 * License along with this program; if not, write to the
22 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
23 * Boston, MA 021110-1307, USA.
24 */
25
26#include <linux/types.h>
27#include <linux/slab.h>
28#include <linux/highmem.h>
29#include <linux/kthread.h>
30
31#include <cluster/heartbeat.h>
32#include <cluster/nodemanager.h>
33#include <cluster/tcp.h>
34
35#include <dlm/dlmapi.h>
36
37#define MLOG_MASK_PREFIX ML_VOTE
38#include <cluster/masklog.h>
39
40#include "ocfs2.h"
41
42#include "alloc.h"
43#include "dlmglue.h"
44#include "extent_map.h"
45#include "heartbeat.h"
46#include "inode.h"
47#include "journal.h"
48#include "slot_map.h"
49#include "vote.h"
50
51#include "buffer_head_io.h"
52
53#define OCFS2_MESSAGE_TYPE_VOTE (0x1)
54#define OCFS2_MESSAGE_TYPE_RESPONSE (0x2)
55struct ocfs2_msg_hdr
56{
57 __be32 h_response_id; /* used to lookup message handle on sending
58 * node. */
59 __be32 h_request;
60 __be64 h_blkno;
61 __be32 h_generation;
62 __be32 h_node_num; /* node sending this particular message. */
63};
64
65struct ocfs2_vote_msg
66{
67 struct ocfs2_msg_hdr v_hdr;
68 __be32 v_reserved1;
69} __attribute__ ((packed));
70
71/* Responses are given these values to maintain backwards
72 * compatibility with older ocfs2 versions */
73#define OCFS2_RESPONSE_OK (0)
74#define OCFS2_RESPONSE_BUSY (-16)
75#define OCFS2_RESPONSE_BAD_MSG (-22)
76
77struct ocfs2_response_msg
78{
79 struct ocfs2_msg_hdr r_hdr;
80 __be32 r_response;
81} __attribute__ ((packed));
82
83struct ocfs2_vote_work {
84 struct list_head w_list;
85 struct ocfs2_vote_msg w_msg;
86};
87
88enum ocfs2_vote_request {
89 OCFS2_VOTE_REQ_INVALID = 0,
90 OCFS2_VOTE_REQ_MOUNT,
91 OCFS2_VOTE_REQ_UMOUNT,
92 OCFS2_VOTE_REQ_LAST
93};
94
95static inline int ocfs2_is_valid_vote_request(int request)
96{
97 return OCFS2_VOTE_REQ_INVALID < request &&
98 request < OCFS2_VOTE_REQ_LAST;
99}
100
101typedef void (*ocfs2_net_response_callback)(void *priv,
102 struct ocfs2_response_msg *resp);
103struct ocfs2_net_response_cb {
104 ocfs2_net_response_callback rc_cb;
105 void *rc_priv;
106};
107
108struct ocfs2_net_wait_ctxt {
109 struct list_head n_list;
110 u32 n_response_id;
111 wait_queue_head_t n_event;
112 struct ocfs2_node_map n_node_map;
113 int n_response; /* an agreggate response. 0 if
114 * all nodes are go, < 0 on any
115 * negative response from any
116 * node or network error. */
117 struct ocfs2_net_response_cb *n_callback;
118};
119
120static void ocfs2_process_mount_request(struct ocfs2_super *osb,
121 unsigned int node_num)
122{
123 mlog(0, "MOUNT vote from node %u\n", node_num);
124 /* The other node only sends us this message when he has an EX
125 * on the superblock, so our recovery threads (if having been
126 * launched) are waiting on it.*/
127 ocfs2_recovery_map_clear(osb, node_num);
128 ocfs2_node_map_set_bit(osb, &osb->mounted_map, node_num);
129
130 /* We clear the umount map here because a node may have been
131 * previously mounted, safely unmounted but never stopped
132 * heartbeating - in which case we'd have a stale entry. */
133 ocfs2_node_map_clear_bit(osb, &osb->umount_map, node_num);
134}
135
136static void ocfs2_process_umount_request(struct ocfs2_super *osb,
137 unsigned int node_num)
138{
139 mlog(0, "UMOUNT vote from node %u\n", node_num);
140 ocfs2_node_map_clear_bit(osb, &osb->mounted_map, node_num);
141 ocfs2_node_map_set_bit(osb, &osb->umount_map, node_num);
142}
143
144static void ocfs2_process_vote(struct ocfs2_super *osb,
145 struct ocfs2_vote_msg *msg)
146{
147 int net_status, vote_response;
148 unsigned int node_num;
149 u64 blkno;
150 enum ocfs2_vote_request request;
151 struct ocfs2_msg_hdr *hdr = &msg->v_hdr;
152 struct ocfs2_response_msg response;
153
154 /* decode the network mumbo jumbo into local variables. */
155 request = be32_to_cpu(hdr->h_request);
156 blkno = be64_to_cpu(hdr->h_blkno);
157 node_num = be32_to_cpu(hdr->h_node_num);
158
159 mlog(0, "processing vote: request = %u, blkno = %llu, node_num = %u\n",
160 request, (unsigned long long)blkno, node_num);
161
162 if (!ocfs2_is_valid_vote_request(request)) {
163 mlog(ML_ERROR, "Invalid vote request %d from node %u\n",
164 request, node_num);
165 vote_response = OCFS2_RESPONSE_BAD_MSG;
166 goto respond;
167 }
168
169 vote_response = OCFS2_RESPONSE_OK;
170
171 switch (request) {
172 case OCFS2_VOTE_REQ_UMOUNT:
173 ocfs2_process_umount_request(osb, node_num);
174 goto respond;
175 case OCFS2_VOTE_REQ_MOUNT:
176 ocfs2_process_mount_request(osb, node_num);
177 goto respond;
178 default:
179 /* avoids a gcc warning */
180 break;
181 }
182
183respond:
184 /* Response struture is small so we just put it on the stack
185 * and stuff it inline. */
186 memset(&response, 0, sizeof(struct ocfs2_response_msg));
187 response.r_hdr.h_response_id = hdr->h_response_id;
188 response.r_hdr.h_blkno = hdr->h_blkno;
189 response.r_hdr.h_generation = hdr->h_generation;
190 response.r_hdr.h_node_num = cpu_to_be32(osb->node_num);
191 response.r_response = cpu_to_be32(vote_response);
192
193 net_status = o2net_send_message(OCFS2_MESSAGE_TYPE_RESPONSE,
194 osb->net_key,
195 &response,
196 sizeof(struct ocfs2_response_msg),
197 node_num,
198 NULL);
199 /* We still want to error print for ENOPROTOOPT here. The
200 * sending node shouldn't have unregistered his net handler
201 * without sending an unmount vote 1st */
202 if (net_status < 0
203 && net_status != -ETIMEDOUT
204 && net_status != -ENOTCONN)
205 mlog(ML_ERROR, "message to node %u fails with error %d!\n",
206 node_num, net_status);
207}
208
209static void ocfs2_vote_thread_do_work(struct ocfs2_super *osb)
210{
211 unsigned long processed;
212 struct ocfs2_lock_res *lockres;
213 struct ocfs2_vote_work *work;
214
215 mlog_entry_void();
216
217 spin_lock(&osb->vote_task_lock);
218 /* grab this early so we know to try again if a state change and
219 * wake happens part-way through our work */
220 osb->vote_work_sequence = osb->vote_wake_sequence;
221
222 processed = osb->blocked_lock_count;
223 while (processed) {
224 BUG_ON(list_empty(&osb->blocked_lock_list));
225
226 lockres = list_entry(osb->blocked_lock_list.next,
227 struct ocfs2_lock_res, l_blocked_list);
228 list_del_init(&lockres->l_blocked_list);
229 osb->blocked_lock_count--;
230 spin_unlock(&osb->vote_task_lock);
231
232 BUG_ON(!processed);
233 processed--;
234
235 ocfs2_process_blocked_lock(osb, lockres);
236
237 spin_lock(&osb->vote_task_lock);
238 }
239
240 while (osb->vote_count) {
241 BUG_ON(list_empty(&osb->vote_list));
242 work = list_entry(osb->vote_list.next,
243 struct ocfs2_vote_work, w_list);
244 list_del(&work->w_list);
245 osb->vote_count--;
246 spin_unlock(&osb->vote_task_lock);
247
248 ocfs2_process_vote(osb, &work->w_msg);
249 kfree(work);
250
251 spin_lock(&osb->vote_task_lock);
252 }
253 spin_unlock(&osb->vote_task_lock);
254
255 mlog_exit_void();
256}
257
258static int ocfs2_vote_thread_lists_empty(struct ocfs2_super *osb)
259{
260 int empty = 0;
261
262 spin_lock(&osb->vote_task_lock);
263 if (list_empty(&osb->blocked_lock_list) &&
264 list_empty(&osb->vote_list))
265 empty = 1;
266
267 spin_unlock(&osb->vote_task_lock);
268 return empty;
269}
270
271static int ocfs2_vote_thread_should_wake(struct ocfs2_super *osb)
272{
273 int should_wake = 0;
274
275 spin_lock(&osb->vote_task_lock);
276 if (osb->vote_work_sequence != osb->vote_wake_sequence)
277 should_wake = 1;
278 spin_unlock(&osb->vote_task_lock);
279
280 return should_wake;
281}
282
283int ocfs2_vote_thread(void *arg)
284{
285 int status = 0;
286 struct ocfs2_super *osb = arg;
287
288 /* only quit once we've been asked to stop and there is no more
289 * work available */
290 while (!(kthread_should_stop() &&
291 ocfs2_vote_thread_lists_empty(osb))) {
292
293 wait_event_interruptible(osb->vote_event,
294 ocfs2_vote_thread_should_wake(osb) ||
295 kthread_should_stop());
296
297 mlog(0, "vote_thread: awoken\n");
298
299 ocfs2_vote_thread_do_work(osb);
300 }
301
302 osb->vote_task = NULL;
303 return status;
304}
305
306static struct ocfs2_net_wait_ctxt *ocfs2_new_net_wait_ctxt(unsigned int response_id)
307{
308 struct ocfs2_net_wait_ctxt *w;
309
310 w = kzalloc(sizeof(*w), GFP_NOFS);
311 if (!w) {
312 mlog_errno(-ENOMEM);
313 goto bail;
314 }
315
316 INIT_LIST_HEAD(&w->n_list);
317 init_waitqueue_head(&w->n_event);
318 ocfs2_node_map_init(&w->n_node_map);
319 w->n_response_id = response_id;
320 w->n_callback = NULL;
321bail:
322 return w;
323}
324
325static unsigned int ocfs2_new_response_id(struct ocfs2_super *osb)
326{
327 unsigned int ret;
328
329 spin_lock(&osb->net_response_lock);
330 ret = ++osb->net_response_ids;
331 spin_unlock(&osb->net_response_lock);
332
333 return ret;
334}
335
336static void ocfs2_dequeue_net_wait_ctxt(struct ocfs2_super *osb,
337 struct ocfs2_net_wait_ctxt *w)
338{
339 spin_lock(&osb->net_response_lock);
340 list_del(&w->n_list);
341 spin_unlock(&osb->net_response_lock);
342}
343
344static void ocfs2_queue_net_wait_ctxt(struct ocfs2_super *osb,
345 struct ocfs2_net_wait_ctxt *w)
346{
347 spin_lock(&osb->net_response_lock);
348 list_add_tail(&w->n_list,
349 &osb->net_response_list);
350 spin_unlock(&osb->net_response_lock);
351}
352
353static void __ocfs2_mark_node_responded(struct ocfs2_super *osb,
354 struct ocfs2_net_wait_ctxt *w,
355 int node_num)
356{
357 assert_spin_locked(&osb->net_response_lock);
358
359 ocfs2_node_map_clear_bit(osb, &w->n_node_map, node_num);
360 if (ocfs2_node_map_is_empty(osb, &w->n_node_map))
361 wake_up(&w->n_event);
362}
363
364/* Intended to be called from the node down callback, we fake remove
365 * the node from all our response contexts */
366void ocfs2_remove_node_from_vote_queues(struct ocfs2_super *osb,
367 int node_num)
368{
369 struct list_head *p;
370 struct ocfs2_net_wait_ctxt *w = NULL;
371
372 spin_lock(&osb->net_response_lock);
373
374 list_for_each(p, &osb->net_response_list) {
375 w = list_entry(p, struct ocfs2_net_wait_ctxt, n_list);
376
377 __ocfs2_mark_node_responded(osb, w, node_num);
378 }
379
380 spin_unlock(&osb->net_response_lock);
381}
382
383static int ocfs2_broadcast_vote(struct ocfs2_super *osb,
384 struct ocfs2_vote_msg *request,
385 unsigned int response_id,
386 int *response,
387 struct ocfs2_net_response_cb *callback)
388{
389 int status, i, remote_err;
390 struct ocfs2_net_wait_ctxt *w = NULL;
391 int dequeued = 0;
392
393 mlog_entry_void();
394
395 w = ocfs2_new_net_wait_ctxt(response_id);
396 if (!w) {
397 status = -ENOMEM;
398 mlog_errno(status);
399 goto bail;
400 }
401 w->n_callback = callback;
402
403 /* we're pretty much ready to go at this point, and this fills
404 * in n_response which we need anyway... */
405 ocfs2_queue_net_wait_ctxt(osb, w);
406
407 i = ocfs2_node_map_iterate(osb, &osb->mounted_map, 0);
408
409 while (i != O2NM_INVALID_NODE_NUM) {
410 if (i != osb->node_num) {
411 mlog(0, "trying to send request to node %i\n", i);
412 ocfs2_node_map_set_bit(osb, &w->n_node_map, i);
413
414 remote_err = 0;
415 status = o2net_send_message(OCFS2_MESSAGE_TYPE_VOTE,
416 osb->net_key,
417 request,
418 sizeof(*request),
419 i,
420 &remote_err);
421 if (status == -ETIMEDOUT) {
422 mlog(0, "remote node %d timed out!\n", i);
423 status = -EAGAIN;
424 goto bail;
425 }
426 if (remote_err < 0) {
427 status = remote_err;
428 mlog(0, "remote error %d on node %d!\n",
429 remote_err, i);
430 mlog_errno(status);
431 goto bail;
432 }
433 if (status < 0) {
434 mlog_errno(status);
435 goto bail;
436 }
437 }
438 i++;
439 i = ocfs2_node_map_iterate(osb, &osb->mounted_map, i);
440 mlog(0, "next is %d, i am %d\n", i, osb->node_num);
441 }
442 mlog(0, "done sending, now waiting on responses...\n");
443
444 wait_event(w->n_event, ocfs2_node_map_is_empty(osb, &w->n_node_map));
445
446 ocfs2_dequeue_net_wait_ctxt(osb, w);
447 dequeued = 1;
448
449 *response = w->n_response;
450 status = 0;
451bail:
452 if (w) {
453 if (!dequeued)
454 ocfs2_dequeue_net_wait_ctxt(osb, w);
455 kfree(w);
456 }
457
458 mlog_exit(status);
459 return status;
460}
461
462static struct ocfs2_vote_msg * ocfs2_new_vote_request(struct ocfs2_super *osb,
463 u64 blkno,
464 unsigned int generation,
465 enum ocfs2_vote_request type)
466{
467 struct ocfs2_vote_msg *request;
468 struct ocfs2_msg_hdr *hdr;
469
470 BUG_ON(!ocfs2_is_valid_vote_request(type));
471
472 request = kzalloc(sizeof(*request), GFP_NOFS);
473 if (!request) {
474 mlog_errno(-ENOMEM);
475 } else {
476 hdr = &request->v_hdr;
477 hdr->h_node_num = cpu_to_be32(osb->node_num);
478 hdr->h_request = cpu_to_be32(type);
479 hdr->h_blkno = cpu_to_be64(blkno);
480 hdr->h_generation = cpu_to_be32(generation);
481 }
482
483 return request;
484}
485
486/* Complete the buildup of a new vote request and process the
487 * broadcast return value. */
488static int ocfs2_do_request_vote(struct ocfs2_super *osb,
489 struct ocfs2_vote_msg *request,
490 struct ocfs2_net_response_cb *callback)
491{
492 int status, response = -EBUSY;
493 unsigned int response_id;
494 struct ocfs2_msg_hdr *hdr;
495
496 response_id = ocfs2_new_response_id(osb);
497
498 hdr = &request->v_hdr;
499 hdr->h_response_id = cpu_to_be32(response_id);
500
501 status = ocfs2_broadcast_vote(osb, request, response_id, &response,
502 callback);
503 if (status < 0) {
504 mlog_errno(status);
505 goto bail;
506 }
507
508 status = response;
509bail:
510
511 return status;
512}
513
514int ocfs2_request_mount_vote(struct ocfs2_super *osb)
515{
516 int status;
517 struct ocfs2_vote_msg *request = NULL;
518
519 request = ocfs2_new_vote_request(osb, 0ULL, 0, OCFS2_VOTE_REQ_MOUNT);
520 if (!request) {
521 status = -ENOMEM;
522 goto bail;
523 }
524
525 status = -EAGAIN;
526 while (status == -EAGAIN) {
527 if (!(osb->s_mount_opt & OCFS2_MOUNT_NOINTR) &&
528 signal_pending(current)) {
529 status = -ERESTARTSYS;
530 goto bail;
531 }
532
533 if (ocfs2_node_map_is_only(osb, &osb->mounted_map,
534 osb->node_num)) {
535 status = 0;
536 goto bail;
537 }
538
539 status = ocfs2_do_request_vote(osb, request, NULL);
540 }
541
542bail:
543 kfree(request);
544 return status;
545}
546
547int ocfs2_request_umount_vote(struct ocfs2_super *osb)
548{
549 int status;
550 struct ocfs2_vote_msg *request = NULL;
551
552 request = ocfs2_new_vote_request(osb, 0ULL, 0, OCFS2_VOTE_REQ_UMOUNT);
553 if (!request) {
554 status = -ENOMEM;
555 goto bail;
556 }
557
558 status = -EAGAIN;
559 while (status == -EAGAIN) {
560 /* Do not check signals on this vote... We really want
561 * this one to go all the way through. */
562
563 if (ocfs2_node_map_is_only(osb, &osb->mounted_map,
564 osb->node_num)) {
565 status = 0;
566 goto bail;
567 }
568
569 status = ocfs2_do_request_vote(osb, request, NULL);
570 }
571
572bail:
573 kfree(request);
574 return status;
575}
576
577/* TODO: This should eventually be a hash table! */
578static struct ocfs2_net_wait_ctxt * __ocfs2_find_net_wait_ctxt(struct ocfs2_super *osb,
579 u32 response_id)
580{
581 struct list_head *p;
582 struct ocfs2_net_wait_ctxt *w = NULL;
583
584 list_for_each(p, &osb->net_response_list) {
585 w = list_entry(p, struct ocfs2_net_wait_ctxt, n_list);
586 if (response_id == w->n_response_id)
587 break;
588 w = NULL;
589 }
590
591 return w;
592}
593
594/* Translate response codes into local node errno values */
595static inline int ocfs2_translate_response(int response)
596{
597 int ret;
598
599 switch (response) {
600 case OCFS2_RESPONSE_OK:
601 ret = 0;
602 break;
603
604 case OCFS2_RESPONSE_BUSY:
605 ret = -EBUSY;
606 break;
607
608 default:
609 ret = -EINVAL;
610 }
611
612 return ret;
613}
614
615static int ocfs2_handle_response_message(struct o2net_msg *msg,
616 u32 len,
617 void *data, void **ret_data)
618{
619 unsigned int response_id, node_num;
620 int response_status;
621 struct ocfs2_super *osb = data;
622 struct ocfs2_response_msg *resp;
623 struct ocfs2_net_wait_ctxt * w;
624 struct ocfs2_net_response_cb *resp_cb;
625
626 resp = (struct ocfs2_response_msg *) msg->buf;
627
628 response_id = be32_to_cpu(resp->r_hdr.h_response_id);
629 node_num = be32_to_cpu(resp->r_hdr.h_node_num);
630 response_status =
631 ocfs2_translate_response(be32_to_cpu(resp->r_response));
632
633 mlog(0, "received response message:\n");
634 mlog(0, "h_response_id = %u\n", response_id);
635 mlog(0, "h_request = %u\n", be32_to_cpu(resp->r_hdr.h_request));
636 mlog(0, "h_blkno = %llu\n",
637 (unsigned long long)be64_to_cpu(resp->r_hdr.h_blkno));
638 mlog(0, "h_generation = %u\n", be32_to_cpu(resp->r_hdr.h_generation));
639 mlog(0, "h_node_num = %u\n", node_num);
640 mlog(0, "r_response = %d\n", response_status);
641
642 spin_lock(&osb->net_response_lock);
643 w = __ocfs2_find_net_wait_ctxt(osb, response_id);
644 if (!w) {
645 mlog(0, "request not found!\n");
646 goto bail;
647 }
648 resp_cb = w->n_callback;
649
650 if (response_status && (!w->n_response)) {
651 /* we only really need one negative response so don't
652 * set it twice. */
653 w->n_response = response_status;
654 }
655
656 if (resp_cb) {
657 spin_unlock(&osb->net_response_lock);
658
659 resp_cb->rc_cb(resp_cb->rc_priv, resp);
660
661 spin_lock(&osb->net_response_lock);
662 }
663
664 __ocfs2_mark_node_responded(osb, w, node_num);
665bail:
666 spin_unlock(&osb->net_response_lock);
667
668 return 0;
669}
670
671static int ocfs2_handle_vote_message(struct o2net_msg *msg,
672 u32 len,
673 void *data, void **ret_data)
674{
675 int status;
676 struct ocfs2_super *osb = data;
677 struct ocfs2_vote_work *work;
678
679 work = kmalloc(sizeof(struct ocfs2_vote_work), GFP_NOFS);
680 if (!work) {
681 status = -ENOMEM;
682 mlog_errno(status);
683 goto bail;
684 }
685
686 INIT_LIST_HEAD(&work->w_list);
687 memcpy(&work->w_msg, msg->buf, sizeof(struct ocfs2_vote_msg));
688
689 mlog(0, "scheduling vote request:\n");
690 mlog(0, "h_response_id = %u\n",
691 be32_to_cpu(work->w_msg.v_hdr.h_response_id));
692 mlog(0, "h_request = %u\n", be32_to_cpu(work->w_msg.v_hdr.h_request));
693 mlog(0, "h_blkno = %llu\n",
694 (unsigned long long)be64_to_cpu(work->w_msg.v_hdr.h_blkno));
695 mlog(0, "h_generation = %u\n",
696 be32_to_cpu(work->w_msg.v_hdr.h_generation));
697 mlog(0, "h_node_num = %u\n",
698 be32_to_cpu(work->w_msg.v_hdr.h_node_num));
699
700 spin_lock(&osb->vote_task_lock);
701 list_add_tail(&work->w_list, &osb->vote_list);
702 osb->vote_count++;
703 spin_unlock(&osb->vote_task_lock);
704
705 ocfs2_kick_vote_thread(osb);
706
707 status = 0;
708bail:
709 return status;
710}
711
712void ocfs2_unregister_net_handlers(struct ocfs2_super *osb)
713{
714 if (!osb->net_key)
715 return;
716
717 o2net_unregister_handler_list(&osb->osb_net_handlers);
718
719 if (!list_empty(&osb->net_response_list))
720 mlog(ML_ERROR, "net response list not empty!\n");
721
722 osb->net_key = 0;
723}
724
725int ocfs2_register_net_handlers(struct ocfs2_super *osb)
726{
727 int status = 0;
728
729 if (ocfs2_mount_local(osb))
730 return 0;
731
732 status = o2net_register_handler(OCFS2_MESSAGE_TYPE_RESPONSE,
733 osb->net_key,
734 sizeof(struct ocfs2_response_msg),
735 ocfs2_handle_response_message,
736 osb, NULL, &osb->osb_net_handlers);
737 if (status) {
738 mlog_errno(status);
739 goto bail;
740 }
741
742 status = o2net_register_handler(OCFS2_MESSAGE_TYPE_VOTE,
743 osb->net_key,
744 sizeof(struct ocfs2_vote_msg),
745 ocfs2_handle_vote_message,
746 osb, NULL, &osb->osb_net_handlers);
747 if (status) {
748 mlog_errno(status);
749 goto bail;
750 }
751bail:
752 if (status < 0)
753 ocfs2_unregister_net_handlers(osb);
754
755 return status;
756}
diff --git a/fs/ocfs2/vote.h b/fs/ocfs2/vote.h
deleted file mode 100644
index 9ea46f62de31..000000000000
--- a/fs/ocfs2/vote.h
+++ /dev/null
@@ -1,48 +0,0 @@
1/* -*- mode: c; c-basic-offset: 8; -*-
2 * vim: noexpandtab sw=8 ts=8 sts=0:
3 *
4 * vote.h
5 *
6 * description here
7 *
8 * Copyright (C) 2002, 2004 Oracle. All rights reserved.
9 *
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public
12 * License as published by the Free Software Foundation; either
13 * version 2 of the License, or (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public
21 * License along with this program; if not, write to the
22 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
23 * Boston, MA 021110-1307, USA.
24 */
25
26
27#ifndef VOTE_H
28#define VOTE_H
29
30int ocfs2_vote_thread(void *arg);
31static inline void ocfs2_kick_vote_thread(struct ocfs2_super *osb)
32{
33 spin_lock(&osb->vote_task_lock);
34 /* make sure the voting thread gets a swipe at whatever changes
35 * the caller may have made to the voting state */
36 osb->vote_wake_sequence++;
37 spin_unlock(&osb->vote_task_lock);
38 wake_up(&osb->vote_event);
39}
40
41int ocfs2_request_mount_vote(struct ocfs2_super *osb);
42int ocfs2_request_umount_vote(struct ocfs2_super *osb);
43int ocfs2_register_net_handlers(struct ocfs2_super *osb);
44void ocfs2_unregister_net_handlers(struct ocfs2_super *osb);
45
46void ocfs2_remove_node_from_vote_queues(struct ocfs2_super *osb,
47 int node_num);
48#endif
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-21 19:11:31 -0500