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From: Jens Axboe on 10 May 2010 08:00 On Mon, May 10 2010, wzt.wzt(a)gmail.com wrote: > Check major number before allocate the buffer, if the major number is not exist, > and the register_blkdev() called many times, kmalloc()/kfree() will be no need > to invoked many times. So check the major number before use kmalloc() to allocate > the buffer will be better. This would generally be sound advice for performance oriented code, but I can't see it making any difference here. -- Jens Axboe -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |