Hi,
I am trying to understand the process by which pages of memory get de/re-allocated.
Lets say I have a process that exits, will the kernel memory management system zero out (entirely) the pages that my process was using, or will it just re-assign them with the old data still present.
I found this gfp mask:
#define __GFP_ZERO 0x8000u /* Return zeroed page on success */
So it seems that a calling process would have to specifically _ask_ for a zeroed out page, otherwise it would get a page with old application data in it (passwords,keys?)
Any insight would be greatly appreciated.
-ryan
