In arch/um/kernel/mem.c, mem_init calls map_cb twice:
once directly and once indirectly via initial_thread_cb. Why?
-----
void mem_init(void)
{
/* clear the zero-page */
memset((void *) empty_zero_page, 0, PAGE_SIZE);
/* Map in the area just after the brk now that kmalloc is about
* to be turned on.
*/
brk_end = (unsigned long) UML_ROUND_UP(sbrk(0));
map_cb(NULL);
initial_thread_cb(map_cb, NULL);
-----
--
John Reiser, [EMAIL PROTECTED]
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