Messages in this thread | | | Date | Fri, 6 Aug 1999 17:00:58 -0700 (PDT) | From | Linus Torvalds <> | Subject | Re: [PATCH] Fix sys_mount not to free_page(0) |
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On Fri, 6 Aug 1999, Kanoj Sarcar wrote: > > > > free_page(0) is actually supposed to work. Doesn't it? > > Umm, it does ... I was thinking it was happenstance, and not by design.
It's by design - I am of the religion that thinks that
free(malloc());
is always legal, even when the malloc() fails.
> Is it worthwhile to clean this up, or do other places in the code rely > on this behavior of free_page?
There might be any number of places who just free a page, it doesn't even slow down free_page(), because the 0 case just falls out quite naturally from having to test for out-of-range and reserved pages anyway.
Linus
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