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| author | jiangyiwen <jiangyiwen@huawei.com> | 2016-03-15 14:52:58 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-03-15 16:55:16 -0700 |
| commit | 4d548f61d61fcaa5b5e14b8d250de9604bdb61bf (patch) | |
| tree | 943fa3d4653fad7331c1bfea3584e7d144af479a /fs | |
| parent | e928f35061a6f3ead993b230b01d9ca6b4f495ca (diff) | |
| download | linux-4d548f61d61fcaa5b5e14b8d250de9604bdb61bf.tar.bz2 | |
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')
| -rw-r--r-- | fs/ocfs2/cluster/heartbeat.c | 10 |
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", |