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Subject[Patch 9/10] dm: Remove redundant spin lock in dec_pending()
Remove redundant spin lock in dec_pending()
--- diff/drivers/md/dm.c 2004-02-10 16:11:50.000000000 +0000
+++ source/drivers/md/dm.c 2004-02-10 16:12:10.000000000 +0000
@@ -217,14 +217,8 @@
*/
static inline void dec_pending(struct dm_io *io, int error)
{
- static spinlock_t _uptodate_lock = SPIN_LOCK_UNLOCKED;
- unsigned long flags;
-
- if (error) {
- spin_lock_irqsave(&_uptodate_lock, flags);
+ if (error)
io->error = error;
- spin_unlock_irqrestore(&_uptodate_lock, flags);
- }

if (atomic_dec_and_test(&io->io_count)) {
if (atomic_dec_and_test(&io->md->pending))
-
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