> 2.4.19pre8_page_alloc_commentry
> http://www.csn.ul.ie/~mel/projects/vm/patches/2.4.19pre8_page_alloc_commentry
> This extends the documentation on page_alloc.c to describe how the buddy
> allocator works
One way to describe the bit toggling behavior is saying that each page
has a "virtual bit", the bit present in the bitmap is the xor of the
"virtual bits" of the two buddies, and the buddy's bit is recovered by
xor'ing with the bit of the page we're examining, which is known from
the entry point.
Cheers,
Bill
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This archive was generated by hypermail 2b29 : Thu May 23 2002 - 22:00:13 EST