On Wed, 27 Jun 2007, Rik van Riel wrote: > Ulrich Drepper wrote: > > On 6/27/07, Hugh Dickins <[EMAIL PROTECTED]> wrote: > > > Not so: if an mmap can be done by extending either adjacent vma (prot > > > and flags and file and offset all match up), that's what's done and no > > > separate vma is created. (And adjacent vmas get merged when mprotect > > > removes the difference in protection.) > > > > mmap return values are randomized. If they would be mergable > > something would be wrong. > > You can easily pass a hint address to mmap(), causing it to > extend a malloc arena instead of creating a new VMA.
You mean something like the F_DUPFD, where you pass an fd and that serves as from-there-up hint? - Davide - 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/
