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Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mfasheh/ocfs2

Browse source 
* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mfasheh/ocfs2:
  ocfs2: Fix NULL pointer dereferences in o2net
  ocfs2/dlm: dlm_thread should not sleep while holding the dlm_spinlock
  ocfs2/dlm: Print message showing the recovery master
  ocfs2/dlm: Add missing dlm_lockres_put()s
  ocfs2/dlm: Add missing dlm_lockres_put()s in migration path
  ocfs2/dlm: Add missing dlm_lock_put()s
  ocfs2: Fix an endian bug in online resize.
  [PATCH] [OCFS2]: constify function pointer tables
  ocfs2: Fix endian bug in o2dlm protocol negotiation.
  ocfs2: Use dlm_print_one_lock_resource for lock resource print
  [PATCH] fs/ocfs2/dlm/dlmdomain.c: fix printk warning
This commit is contained in:
Linus Torvalds 2008-03-10 18:02:59 -07:00
commit 5c0dea0959
9 changed files with 151 additions and 69 deletions
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9
fs/ocfs2/cluster/tcp.c
View file

@ -451,9 +451,9 @@ static void o2net_set_nn_state(struct o2net_node *nn,
/* delay if we're withing a RECONNECT_DELAY of the
* last attempt */
delay = (nn->nn_last_connect_attempt +
msecs_to_jiffies(o2net_reconnect_delay(sc->sc_node)))
msecs_to_jiffies(o2net_reconnect_delay(NULL)))
- jiffies;
if (delay > msecs_to_jiffies(o2net_reconnect_delay(sc->sc_node)))
if (delay > msecs_to_jiffies(o2net_reconnect_delay(NULL)))
delay = 0;
mlog(ML_CONN, "queueing conn attempt in %lu jiffies\n", delay);
queue_delayed_work(o2net_wq, &nn->nn_connect_work, delay);
@ -1552,12 +1552,11 @@ static void o2net_connect_expired(struct work_struct *work)
spin_lock(&nn->nn_lock);
if (!nn->nn_sc_valid) {
struct o2nm_node *node = nn->nn_sc->sc_node;
mlog(ML_ERROR, "no connection established with node %u after "
"%u.%u seconds, giving up and returning errors.\n",
o2net_num_from_nn(nn),
o2net_idle_timeout(node) / 1000,
o2net_idle_timeout(node) % 1000);
o2net_idle_timeout(NULL) / 1000,
o2net_idle_timeout(NULL) % 1000);
o2net_set_nn_state(nn, NULL, 0, -ENOTCONN);
}

21
fs/ocfs2/dlm/dlmcommon.h
View file

@ -176,6 +176,7 @@ struct dlm_mig_lockres_priv
{
struct dlm_lock_resource *lockres;
u8 real_master;
u8 extra_ref;
};
struct dlm_assert_master_priv
@ -602,17 +603,19 @@ enum dlm_query_join_response_code {
JOIN_PROTOCOL_MISMATCH,
};
struct dlm_query_join_packet {
u8 code; /* Response code. dlm_minor and fs_minor
are only valid if this is JOIN_OK */
u8 dlm_minor; /* The minor version of the protocol the
dlm is speaking. */
u8 fs_minor; /* The minor version of the protocol the
filesystem is speaking. */
u8 reserved;
};
union dlm_query_join_response {
u32 intval;
struct {
u8 code; /* Response code. dlm_minor and fs_minor
are only valid if this is JOIN_OK */
u8 dlm_minor; /* The minor version of the protocol the
dlm is speaking. */
u8 fs_minor; /* The minor version of the protocol the
filesystem is speaking. */
u8 reserved;
} packet;
struct dlm_query_join_packet packet;
};
struct dlm_lock_request

2
fs/ocfs2/dlm/dlmconvert.c
View file

@ -487,7 +487,7 @@ int dlm_convert_lock_handler(struct o2net_msg *msg, u32 len, void *data,
"cookie=%u:%llu\n",
dlm_get_lock_cookie_node(be64_to_cpu(cnv->cookie)),
dlm_get_lock_cookie_seq(be64_to_cpu(cnv->cookie)));
__dlm_print_one_lock_resource(res);
dlm_print_one_lock_resource(res);
goto leave;
}

103
fs/ocfs2/dlm/dlmdomain.c
View file

@ -713,14 +713,46 @@ static int dlm_query_join_proto_check(char *proto_type, int node,
return rc;
}
/*
* struct dlm_query_join_packet is made up of four one-byte fields. They
* are effectively in big-endian order already. However, little-endian
* machines swap them before putting the packet on the wire (because
* query_join's response is a status, and that status is treated as a u32
* on the wire). Thus, a big-endian and little-endian machines will treat
* this structure differently.
*
* The solution is to have little-endian machines swap the structure when
* converting from the structure to the u32 representation. This will
* result in the structure having the correct format on the wire no matter
* the host endian format.
*/
static void dlm_query_join_packet_to_wire(struct dlm_query_join_packet *packet,
u32 *wire)
{
union dlm_query_join_response response;
response.packet = *packet;
*wire = cpu_to_be32(response.intval);
}
static void dlm_query_join_wire_to_packet(u32 wire,
struct dlm_query_join_packet *packet)
{
union dlm_query_join_response response;
response.intval = cpu_to_be32(wire);
*packet = response.packet;
}
static int dlm_query_join_handler(struct o2net_msg *msg, u32 len, void *data,
void **ret_data)
{
struct dlm_query_join_request *query;
union dlm_query_join_response response = {
.packet.code = JOIN_DISALLOW,
struct dlm_query_join_packet packet = {
.code = JOIN_DISALLOW,
};
struct dlm_ctxt *dlm = NULL;
u32 response;
u8 nodenum;
query = (struct dlm_query_join_request *) msg->buf;
@ -737,11 +769,11 @@ static int dlm_query_join_handler(struct o2net_msg *msg, u32 len, void *data,
mlog(0, "node %u is not in our live map yet\n",
query->node_idx);
response.packet.code = JOIN_DISALLOW;
packet.code = JOIN_DISALLOW;
goto respond;
}
response.packet.code = JOIN_OK_NO_MAP;
packet.code = JOIN_OK_NO_MAP;
spin_lock(&dlm_domain_lock);
dlm = __dlm_lookup_domain_full(query->domain, query->name_len);
@ -760,7 +792,7 @@ static int dlm_query_join_handler(struct o2net_msg *msg, u32 len, void *data,
mlog(0, "disallow join as node %u does not "
"have node %u in its nodemap\n",
query->node_idx, nodenum);
response.packet.code = JOIN_DISALLOW;
packet.code = JOIN_DISALLOW;
goto unlock_respond;
}
}
@ -780,23 +812,23 @@ static int dlm_query_join_handler(struct o2net_msg *msg, u32 len, void *data,
/*If this is a brand new context and we
* haven't started our join process yet, then
* the other node won the race. */
response.packet.code = JOIN_OK_NO_MAP;
packet.code = JOIN_OK_NO_MAP;
} else if (dlm->joining_node != DLM_LOCK_RES_OWNER_UNKNOWN) {
/* Disallow parallel joins. */
response.packet.code = JOIN_DISALLOW;
packet.code = JOIN_DISALLOW;
} else if (dlm->reco.state & DLM_RECO_STATE_ACTIVE) {
mlog(0, "node %u trying to join, but recovery "
"is ongoing.\n", bit);
response.packet.code = JOIN_DISALLOW;
packet.code = JOIN_DISALLOW;
} else if (test_bit(bit, dlm->recovery_map)) {
mlog(0, "node %u trying to join, but it "
"still needs recovery.\n", bit);
response.packet.code = JOIN_DISALLOW;
packet.code = JOIN_DISALLOW;
} else if (test_bit(bit, dlm->domain_map)) {
mlog(0, "node %u trying to join, but it "
"is still in the domain! needs recovery?\n",
bit);
response.packet.code = JOIN_DISALLOW;
packet.code = JOIN_DISALLOW;
} else {
/* Alright we're fully a part of this domain
* so we keep some state as to who's joining
@ -807,19 +839,15 @@ static int dlm_query_join_handler(struct o2net_msg *msg, u32 len, void *data,
if (dlm_query_join_proto_check("DLM", bit,
&dlm->dlm_locking_proto,
&query->dlm_proto)) {
response.packet.code =
JOIN_PROTOCOL_MISMATCH;
packet.code = JOIN_PROTOCOL_MISMATCH;
} else if (dlm_query_join_proto_check("fs", bit,
&dlm->fs_locking_proto,
&query->fs_proto)) {
response.packet.code =
JOIN_PROTOCOL_MISMATCH;
packet.code = JOIN_PROTOCOL_MISMATCH;
} else {
response.packet.dlm_minor =
query->dlm_proto.pv_minor;
response.packet.fs_minor =
query->fs_proto.pv_minor;
response.packet.code = JOIN_OK;
packet.dlm_minor = query->dlm_proto.pv_minor;
packet.fs_minor = query->fs_proto.pv_minor;
packet.code = JOIN_OK;
__dlm_set_joining_node(dlm, query->node_idx);
}
}
@ -830,9 +858,10 @@ unlock_respond:
spin_unlock(&dlm_domain_lock);
respond:
mlog(0, "We respond with %u\n", response.packet.code);
mlog(0, "We respond with %u\n", packet.code);
return response.intval;
dlm_query_join_packet_to_wire(&packet, &response);
return response;
}
static int dlm_assert_joined_handler(struct o2net_msg *msg, u32 len, void *data,
@ -937,7 +966,7 @@ static int dlm_send_join_cancels(struct dlm_ctxt *dlm,
sizeof(unsigned long))) {
mlog(ML_ERROR,
"map_size %u != BITS_TO_LONGS(O2NM_MAX_NODES) %u\n",
map_size, BITS_TO_LONGS(O2NM_MAX_NODES));
map_size, (unsigned)BITS_TO_LONGS(O2NM_MAX_NODES));
return -EINVAL;
}
@ -968,7 +997,8 @@ static int dlm_request_join(struct dlm_ctxt *dlm,
{
int status;
struct dlm_query_join_request join_msg;
union dlm_query_join_response join_resp;
struct dlm_query_join_packet packet;
u32 join_resp;
mlog(0, "querying node %d\n", node);
@ -984,11 +1014,12 @@ static int dlm_request_join(struct dlm_ctxt *dlm,
status = o2net_send_message(DLM_QUERY_JOIN_MSG, DLM_MOD_KEY, &join_msg,
sizeof(join_msg), node,
&join_resp.intval);
&join_resp);
if (status < 0 && status != -ENOPROTOOPT) {
mlog_errno(status);
goto bail;
}
dlm_query_join_wire_to_packet(join_resp, &packet);
/* -ENOPROTOOPT from the net code means the other side isn't
listening for our message type -- that's fine, it means
@ -997,10 +1028,10 @@ static int dlm_request_join(struct dlm_ctxt *dlm,
if (status == -ENOPROTOOPT) {
status = 0;
*response = JOIN_OK_NO_MAP;
} else if (join_resp.packet.code == JOIN_DISALLOW ||
join_resp.packet.code == JOIN_OK_NO_MAP) {
*response = join_resp.packet.code;
} else if (join_resp.packet.code == JOIN_PROTOCOL_MISMATCH) {
} else if (packet.code == JOIN_DISALLOW ||
packet.code == JOIN_OK_NO_MAP) {
*response = packet.code;
} else if (packet.code == JOIN_PROTOCOL_MISMATCH) {
mlog(ML_NOTICE,
"This node requested DLM locking protocol %u.%u and "
"filesystem locking protocol %u.%u. At least one of "
@ -1012,14 +1043,12 @@ static int dlm_request_join(struct dlm_ctxt *dlm,
dlm->fs_locking_proto.pv_minor,
node);
status = -EPROTO;
*response = join_resp.packet.code;
} else if (join_resp.packet.code == JOIN_OK) {
*response = join_resp.packet.code;
*response = packet.code;
} else if (packet.code == JOIN_OK) {
*response = packet.code;
/* Use the same locking protocol as the remote node */
dlm->dlm_locking_proto.pv_minor =
join_resp.packet.dlm_minor;
dlm->fs_locking_proto.pv_minor =
join_resp.packet.fs_minor;
dlm->dlm_locking_proto.pv_minor = packet.dlm_minor;
dlm->fs_locking_proto.pv_minor = packet.fs_minor;
mlog(0,
"Node %d responds JOIN_OK with DLM locking protocol "
"%u.%u and fs locking protocol %u.%u\n",
@ -1031,11 +1060,11 @@ static int dlm_request_join(struct dlm_ctxt *dlm,
} else {
status = -EINVAL;
mlog(ML_ERROR, "invalid response %d from node %u\n",
join_resp.packet.code, node);
packet.code, node);
}
mlog(0, "status %d, node %d response is %d\n", status, node,
*response);
*response);
bail:
return status;

18
fs/ocfs2/dlm/dlmmaster.c
View file

@ -1663,7 +1663,12 @@ way_up_top:
dlm_put_mle(tmpmle);
}
send_response:
/*
* __dlm_lookup_lockres() grabbed a reference to this lockres.
* The reference is released by dlm_assert_master_worker() under
* the call to dlm_dispatch_assert_master(). If
* dlm_assert_master_worker() isn't called, we drop it here.
*/
if (dispatch_assert) {
if (response != DLM_MASTER_RESP_YES)
mlog(ML_ERROR, "invalid response %d\n", response);
@ -1678,7 +1683,11 @@ send_response:
if (ret < 0) {
mlog(ML_ERROR, "failed to dispatch assert master work\n");
response = DLM_MASTER_RESP_ERROR;
dlm_lockres_put(res);
}
} else {
if (res)
dlm_lockres_put(res);
}
dlm_put(dlm);
@ -2348,7 +2357,7 @@ int dlm_deref_lockres_handler(struct o2net_msg *msg, u32 len, void *data,
mlog(ML_ERROR, "%s:%.*s: node %u trying to drop ref "
"but it is already dropped!\n", dlm->name,
res->lockname.len, res->lockname.name, node);
__dlm_print_one_lock_resource(res);
dlm_print_one_lock_resource(res);
}
ret = 0;
goto done;
@ -2408,7 +2417,7 @@ static void dlm_deref_lockres_worker(struct dlm_work_item *item, void *data)
mlog(ML_ERROR, "%s:%.*s: node %u trying to drop ref "
"but it is already dropped!\n", dlm->name,
res->lockname.len, res->lockname.name, node);
__dlm_print_one_lock_resource(res);
dlm_print_one_lock_resource(res);
}
dlm_lockres_put(res);
@ -2933,6 +2942,9 @@ static void dlm_remove_nonlocal_locks(struct dlm_ctxt *dlm,
dlm_lockres_clear_refmap_bit(lock->ml.node, res);
list_del_init(&lock->list);
dlm_lock_put(lock);
/* In a normal unlock, we would have added a
* DLM_UNLOCK_FREE_LOCK action. Force it. */
dlm_lock_put(lock);
}
}
queue++;

57
fs/ocfs2/dlm/dlmrecovery.c
View file

@ -519,9 +519,9 @@ static int dlm_do_recovery(struct dlm_ctxt *dlm)
return 0;
master_here:
mlog(0, "(%d) mastering recovery of %s:%u here(this=%u)!\n",
task_pid_nr(dlm->dlm_reco_thread_task),
dlm->name, dlm->reco.dead_node, dlm->node_num);
mlog(ML_NOTICE, "(%d) Node %u is the Recovery Master for the Dead Node "
"%u for Domain %s\n", task_pid_nr(dlm->dlm_reco_thread_task),
dlm->node_num, dlm->reco.dead_node, dlm->name);
status = dlm_remaster_locks(dlm, dlm->reco.dead_node);
if (status < 0) {
@ -1191,7 +1191,7 @@ static int dlm_add_lock_to_array(struct dlm_lock *lock,
(ml->type == LKM_EXMODE ||
memcmp(mres->lvb, lock->lksb->lvb, DLM_LVB_LEN))) {
mlog(ML_ERROR, "mismatched lvbs!\n");
__dlm_print_one_lock_resource(lock->lockres);
dlm_print_one_lock_resource(lock->lockres);
BUG();
}
memcpy(mres->lvb, lock->lksb->lvb, DLM_LVB_LEN);
@ -1327,6 +1327,7 @@ int dlm_mig_lockres_handler(struct o2net_msg *msg, u32 len, void *data,
(struct dlm_migratable_lockres *)msg->buf;
int ret = 0;
u8 real_master;
u8 extra_refs = 0;
char *buf = NULL;
struct dlm_work_item *item = NULL;
struct dlm_lock_resource *res = NULL;
@ -1404,16 +1405,28 @@ int dlm_mig_lockres_handler(struct o2net_msg *msg, u32 len, void *data,
__dlm_insert_lockres(dlm, res);
spin_unlock(&dlm->spinlock);
/* Add an extra ref for this lock-less lockres lest the
* dlm_thread purges it before we get the chance to add
* locks to it */
dlm_lockres_get(res);
/* There are three refs that need to be put.
* 1. Taken above.
* 2. kref_init in dlm_new_lockres()->dlm_init_lockres().
* 3. dlm_lookup_lockres()
* The first one is handled at the end of this function. The
* other two are handled in the worker thread after locks have
* been attached. Yes, we don't wait for purge time to match
* kref_init. The lockres will still have atleast one ref
* added because it is in the hash __dlm_insert_lockres() */
extra_refs++;
/* now that the new lockres is inserted,
* make it usable by other processes */
spin_lock(&res->spinlock);
res->state &= ~DLM_LOCK_RES_IN_PROGRESS;
spin_unlock(&res->spinlock);
wake_up(&res->wq);
/* add an extra ref for just-allocated lockres
* otherwise the lockres will be purged immediately */
dlm_lockres_get(res);
}
/* at this point we have allocated everything we need,
@ -1443,12 +1456,17 @@ int dlm_mig_lockres_handler(struct o2net_msg *msg, u32 len, void *data,
dlm_init_work_item(dlm, item, dlm_mig_lockres_worker, buf);
item->u.ml.lockres = res; /* already have a ref */
item->u.ml.real_master = real_master;
item->u.ml.extra_ref = extra_refs;
spin_lock(&dlm->work_lock);
list_add_tail(&item->list, &dlm->work_list);
spin_unlock(&dlm->work_lock);
queue_work(dlm->dlm_worker, &dlm->dispatched_work);
leave:
/* One extra ref taken needs to be put here */
if (extra_refs)
dlm_lockres_put(res);
dlm_put(dlm);
if (ret < 0) {
if (buf)
@ -1464,17 +1482,19 @@ leave:
static void dlm_mig_lockres_worker(struct dlm_work_item *item, void *data)
{
struct dlm_ctxt *dlm = data;
struct dlm_ctxt *dlm;
struct dlm_migratable_lockres *mres;
int ret = 0;
struct dlm_lock_resource *res;
u8 real_master;
u8 extra_ref;
dlm = item->dlm;
mres = (struct dlm_migratable_lockres *)data;
res = item->u.ml.lockres;
real_master = item->u.ml.real_master;
extra_ref = item->u.ml.extra_ref;
if (real_master == DLM_LOCK_RES_OWNER_UNKNOWN) {
/* this case is super-rare. only occurs if
@ -1517,6 +1537,12 @@ again:
}
leave:
/* See comment in dlm_mig_lockres_handler() */
if (res) {
if (extra_ref)
dlm_lockres_put(res);
dlm_lockres_put(res);
}
kfree(data);
mlog_exit(ret);
}
@ -1644,7 +1670,8 @@ int dlm_master_requery_handler(struct o2net_msg *msg, u32 len, void *data,
/* retry!? */
BUG();
}
}
} else /* put.. incase we are not the master */
dlm_lockres_put(res);
spin_unlock(&res->spinlock);
}
spin_unlock(&dlm->spinlock);
@ -1921,6 +1948,7 @@ void dlm_move_lockres_to_recovery_list(struct dlm_ctxt *dlm,
"Recovering res %s:%.*s, is already on recovery list!\n",
dlm->name, res->lockname.len, res->lockname.name);
list_del_init(&res->recovering);
dlm_lockres_put(res);
}
/* We need to hold a reference while on the recovery list */
dlm_lockres_get(res);
@ -2130,11 +2158,16 @@ static void dlm_free_dead_locks(struct dlm_ctxt *dlm,
assert_spin_locked(&dlm->spinlock);
assert_spin_locked(&res->spinlock);
/* We do two dlm_lock_put(). One for removing from list and the other is
* to force the DLM_UNLOCK_FREE_LOCK action so as to free the locks */
/* TODO: check pending_asts, pending_basts here */
list_for_each_entry_safe(lock, next, &res->granted, list) {
if (lock->ml.node == dead_node) {
list_del_init(&lock->list);
dlm_lock_put(lock);
/* Can't schedule DLM_UNLOCK_FREE_LOCK - do manually */
dlm_lock_put(lock);
freed++;
}
}
@ -2142,6 +2175,8 @@ static void dlm_free_dead_locks(struct dlm_ctxt *dlm,
if (lock->ml.node == dead_node) {
list_del_init(&lock->list);
dlm_lock_put(lock);
/* Can't schedule DLM_UNLOCK_FREE_LOCK - do manually */
dlm_lock_put(lock);
freed++;
}
}
@ -2149,6 +2184,8 @@ static void dlm_free_dead_locks(struct dlm_ctxt *dlm,
if (lock->ml.node == dead_node) {
list_del_init(&lock->list);
dlm_lock_put(lock);
/* Can't schedule DLM_UNLOCK_FREE_LOCK - do manually */
dlm_lock_put(lock);
freed++;
}
}

6
fs/ocfs2/dlm/dlmthread.c
View file

@ -176,12 +176,14 @@ static int dlm_purge_lockres(struct dlm_ctxt *dlm,
res->lockname.name, master);
if (!master) {
/* drop spinlock... retake below */
spin_unlock(&dlm->spinlock);
spin_lock(&res->spinlock);
/* This ensures that clear refmap is sent after the set */
__dlm_wait_on_lockres_flags(res, DLM_LOCK_RES_SETREF_INPROG);
spin_unlock(&res->spinlock);
/* drop spinlock to do messaging, retake below */
spin_unlock(&dlm->spinlock);
/* clear our bit from the master's refmap, ignore errors */
ret = dlm_drop_lockres_ref(dlm, res);
if (ret < 0) {

2
fs/ocfs2/dlmglue.c
View file

@ -2409,7 +2409,7 @@ static int ocfs2_dlm_seq_show(struct seq_file *m, void *v)
return 0;
}
static struct seq_operations ocfs2_dlm_seq_ops = {
static const struct seq_operations ocfs2_dlm_seq_ops = {
.start = ocfs2_dlm_seq_start,
.stop = ocfs2_dlm_seq_stop,
.next = ocfs2_dlm_seq_next,

2
fs/ocfs2/resize.c
View file

@ -597,7 +597,7 @@ int ocfs2_group_add(struct inode *inode, struct ocfs2_new_group_input *input)
memset(cr, 0, sizeof(struct ocfs2_chain_rec));
}
cr->c_blkno = le64_to_cpu(input->group);
cr->c_blkno = cpu_to_le64(input->group);
le32_add_cpu(&cr->c_total, input->clusters * cl_bpc);
le32_add_cpu(&cr->c_free, input->frees * cl_bpc);