Messages in this thread | | | Date | Thu, 15 Apr 1999 19:11:49 +0200 (CEST) | From | Andrea Arcangeli <> | Subject | Re: [patch] page cache in per-inode RB-trees |
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On Wed, 14 Apr 1999, Andrea Arcangeli wrote:
>Right now the rb_entry() call is: > >#define rb_entry(ptr, type, member) \ > ((type *)((char *)(ptr)-(unsigned long)(&((type *)0)->member))) > >If somebody has hints about this or about every other thing let me know as >usual ;).
Just for the record I had an idea on how to avoid the branch. Simply multiplying `0->memeber' with `!!ptr'. Maybe I'll do that...
Andrea Arcangeli
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