Hi, Rik van Riel wrote: > On Wed, 9 Feb 2005, Daniel Jacobowitz wrote: > > On Tue, Feb 08, 2005 at 06:10:18PM -0800, Andrew Morton wrote: > > It's asking for a lot of unwritable zeroed space. See this: > >> LOAD 0x000000 0x08048000 0x08048000 0xb7354 0x1b7354 R E > >> 0x1000 LOAD 0x0b7354 0x08200354 0x08200354 0x1e3e4 0x1f648 RW > >> 0x1000 > > > > clear_user's probably not the right way to provide the extra zeroing. > > Indeed, clear_user() refuses to zero data when it's not writable > to the user process ...
So if the application wants an read only range of zeroed pages, why not just map the ZERO_PAGE() multiple times there? I can imagine _valid_ uses for that (templates for zero intitialized data), although there are _better_ ways to do that. Regards Ingo Oeser - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
