Hi Greg, On 2018/11/22 19:05, Greg Kroah-Hartman wrote: > As I said in another email, doing two things with one variable is odd as > those are two different types of functions. I think lockref_put_or_lock do the similar thing, it is heavily used in dcache.c, but 1) 0 is special for us, we need lock it on a < 0 value rather than 0. 2) spinlock_t is too large for us because every compressed page will have the structure, but the locking rarely happens. Thanks, Gao Xiang > > greg k-h _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
