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Davide Libenzi wrote: > The following patch implements the sys_brk2() syscall, that nothing is > other than a sys_brk() with an extra "flags" parameter. This can be used > to pass the new MAP_NOZERO bit, to ask the kernel to hand over non-zero > pages if possible. Since programs can get back free()d memory after a malloc(), with the old contents of the memory intact, surely your MAP_NONZERO behavior could be the default for programs that can get away with it? Maybe we could use some magic ELF header, similar to the way non-executable stack is handled? -- Politics is the struggle between those who want to make their country the best in the world, and those who believe it already is. Each group calls the other unpatriotic. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
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