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authorjiangyiwen <jiangyiwen@huawei.com>2016-03-15 14:52:58 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2016-03-15 16:55:16 -0700
commit4d548f61d61fcaa5b5e14b8d250de9604bdb61bf (patch)
tree943fa3d4653fad7331c1bfea3584e7d144af479a /fs/ocfs2/cluster
parente928f35061a6f3ead993b230b01d9ca6b4f495ca (diff)
downloadblackbird-obmc-linux-4d548f61d61fcaa5b5e14b8d250de9604bdb61bf.tar.gz
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ocfs2/cluster: replace the interrupt safe spinlocks with common ones
There actually no hardware or software interrupts in the context which using o2hb_live_lock, so we don't need to worry about race conditions caused by irq/softirq with spinlock held. Turning off irq is not good for system performance after all. Just replace them with a non interrupt safe function. Signed-off-by: Yiwen Jiang <jiangyiwen@huawei.com> Reviewed-by: Joseph Qi <joseph.qi@huawei.com> Cc: Mark Fasheh <mfasheh@suse.de> Cc: Joel Becker <jlbec@evilplan.org> Cc: Junxiao Bi <junxiao.bi@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/ocfs2/cluster')
-rw-r--r--fs/ocfs2/cluster/heartbeat.c10
1 files changed, 4 insertions, 6 deletions
diff --git a/fs/ocfs2/cluster/heartbeat.c b/fs/ocfs2/cluster/heartbeat.c
index a76b9ea7722e..ef6a2ec494de 100644
--- a/fs/ocfs2/cluster/heartbeat.c
+++ b/fs/ocfs2/cluster/heartbeat.c
@@ -287,7 +287,6 @@ struct o2hb_bio_wait_ctxt {
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);
@@ -297,14 +296,14 @@ static void o2hb_write_timeout(struct work_struct *work)
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 = bitmap_weight(o2hb_failed_region_bitmap,
O2NM_MAX_REGIONS);
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);
@@ -2425,11 +2424,10 @@ EXPORT_SYMBOL_GPL(o2hb_check_node_heartbeating);
int o2hb_check_node_heartbeating_no_sem(u8 node_num)
{
unsigned long testing_map[BITS_TO_LONGS(O2NM_MAX_NODES)];
- unsigned long flags;
- spin_lock_irqsave(&o2hb_live_lock, flags);
+ spin_lock(&o2hb_live_lock);
o2hb_fill_node_map_from_callback(testing_map, sizeof(testing_map));
- spin_unlock_irqrestore(&o2hb_live_lock, flags);
+ spin_unlock(&o2hb_live_lock);
if (!test_bit(node_num, testing_map)) {
mlog(ML_HEARTBEAT,
"node (%u) does not have heartbeating enabled.\n",
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