Messages in this thread Patch in this message | | | Date | Mon, 16 Dec 2002 10:14:15 +0000 | Subject | 12/19 | From | Joe Thornber <> |
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dec_pending(): only bother spin locking if io->error is going to be updated. [Kevin Corry] --- diff/drivers/md/dm.c 2002-12-16 09:41:12.000000000 +0000 +++ source/drivers/md/dm.c 2002-12-16 09:41:16.000000000 +0000 @@ -238,10 +238,11 @@ static spinlock_t _uptodate_lock = SPIN_LOCK_UNLOCKED; unsigned long flags; - spin_lock_irqsave(&_uptodate_lock, flags); - if (error) + if (error) { + spin_lock_irqsave(&_uptodate_lock, flags); io->error = error; - spin_unlock_irqrestore(&_uptodate_lock, flags); + spin_unlock_irqrestore(&_uptodate_lock, flags); + } if (atomic_dec_and_test(&io->io_count)) { if (atomic_dec_and_test(&io->md->pending)) - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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