aboutsummaryrefslogtreecommitdiffstats
path: root/net/tipc/ref.c
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2008-07-20 20:43:29 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2008-07-20 20:43:29 -0400
commitdb6d8c7a4027b48d797b369a53f8470aaeed7063 (patch)
treee140c104a89abc2154e1f41a7db8ebecbb6fa0b4 /net/tipc/ref.c
parent3a533374283aea50eab3976d8a6d30532175f009 (diff)
parentfb65a7c091529bfffb1262515252c0d0f6241c5c (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (1232 commits) iucv: Fix bad merging. net_sched: Add size table for qdiscs net_sched: Add accessor function for packet length for qdiscs net_sched: Add qdisc_enqueue wrapper highmem: Export totalhigh_pages. ipv6 mcast: Omit redundant address family checks in ip6_mc_source(). net: Use standard structures for generic socket address structures. ipv6 netns: Make several "global" sysctl variables namespace aware. netns: Use net_eq() to compare net-namespaces for optimization. ipv6: remove unused macros from net/ipv6.h ipv6: remove unused parameter from ip6_ra_control tcp: fix kernel panic with listening_get_next tcp: Remove redundant checks when setting eff_sacks tcp: options clean up tcp: Fix MD5 signatures for non-linear skbs sctp: Update sctp global memory limit allocations. sctp: remove unnecessary byteshifting, calculate directly in big-endian sctp: Allow only 1 listening socket with SO_REUSEADDR sctp: Do not leak memory on multiple listen() calls sctp: Support ipv6only AF_INET6 sockets. ...
Diffstat (limited to 'net/tipc/ref.c')
-rw-r--r--net/tipc/ref.c14
1 files changed, 9 insertions, 5 deletions
diff --git a/net/tipc/ref.c b/net/tipc/ref.c
index 89cbab24d08f..414fc34b8bea 100644
--- a/net/tipc/ref.c
+++ b/net/tipc/ref.c
@@ -123,7 +123,7 @@ int tipc_ref_table_init(u32 requested_size, u32 start)
123 tipc_ref_table.index_mask = actual_size - 1; 123 tipc_ref_table.index_mask = actual_size - 1;
124 tipc_ref_table.start_mask = start & ~tipc_ref_table.index_mask; 124 tipc_ref_table.start_mask = start & ~tipc_ref_table.index_mask;
125 125
126 return TIPC_OK; 126 return 0;
127} 127}
128 128
129/** 129/**
@@ -142,9 +142,13 @@ void tipc_ref_table_stop(void)
142/** 142/**
143 * tipc_ref_acquire - create reference to an object 143 * tipc_ref_acquire - create reference to an object
144 * 144 *
145 * Return a unique reference value which can be translated back to the pointer 145 * Register an object pointer in reference table and lock the object.
146 * 'object' at a later time. Also, pass back a pointer to the lock protecting 146 * Returns a unique reference value that is used from then on to retrieve the
147 * the object, but without locking it. 147 * object pointer, or to determine that the object has been deregistered.
148 *
149 * Note: The object is returned in the locked state so that the caller can
150 * register a partially initialized object, without running the risk that
151 * the object will be accessed before initialization is complete.
148 */ 152 */
149 153
150u32 tipc_ref_acquire(void *object, spinlock_t **lock) 154u32 tipc_ref_acquire(void *object, spinlock_t **lock)
@@ -178,13 +182,13 @@ u32 tipc_ref_acquire(void *object, spinlock_t **lock)
178 ref = (next_plus_upper & ~index_mask) + index; 182 ref = (next_plus_upper & ~index_mask) + index;
179 entry->ref = ref; 183 entry->ref = ref;
180 entry->object = object; 184 entry->object = object;
181 spin_unlock_bh(&entry->lock);
182 *lock = &entry->lock; 185 *lock = &entry->lock;
183 } 186 }
184 else if (tipc_ref_table.init_point < tipc_ref_table.capacity) { 187 else if (tipc_ref_table.init_point < tipc_ref_table.capacity) {
185 index = tipc_ref_table.init_point++; 188 index = tipc_ref_table.init_point++;
186 entry = &(tipc_ref_table.entries[index]); 189 entry = &(tipc_ref_table.entries[index]);
187 spin_lock_init(&entry->lock); 190 spin_lock_init(&entry->lock);
191 spin_lock_bh(&entry->lock);
188 ref = tipc_ref_table.start_mask + index; 192 ref = tipc_ref_table.start_mask + index;
189 entry->ref = ref; 193 entry->ref = ref;
190 entry->object = object; 194 entry->object = object;