On Tuesday 13 November 2007 01:30, schwidefsky@xxxxxxxxxx wrote: > From: Martin Schwidefsky <schwidefsky@xxxxxxxxxx> > > In order to change the layout of the page tables after an mmap has > crossed the adress space limit of the current page table layout a > architecture hook in get_unmapped_area is needed. The arguments > are the address of the new mapping and the length of it. Can you comment what this is supposed to be fore somewhere? > Cc: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx> > Signed-off-by: Martin Schwidefsky <schwidefsky@xxxxxxxxxx> > --- > > mm/mmap.c | 6 +++++- > 1 file changed, 5 insertions(+), 1 deletion(-) > > Index: linux-2.6/mm/mmap.c > =================================================================== > --- linux-2.6.orig/mm/mmap.c > +++ linux-2.6/mm/mmap.c > @@ -36,6 +36,10 @@ > #define arch_mmap_check(addr, len, flags) (0) > #endif > > +#ifndef arch_rebalance_pgtables > +#define arch_rebalance_pgtables(addr, len) (addr) > +#endif > + > static void unmap_region(struct mm_struct *mm, > struct vm_area_struct *vma, struct vm_area_struct *prev, > unsigned long start, unsigned long end); > @@ -1436,7 +1440,7 @@ get_unmapped_area(struct file *file, uns > if (addr & ~PAGE_MASK) > return -EINVAL; > > - return addr; > + return arch_rebalance_pgtables(addr, len); > } > > EXPORT_SYMBOL(get_unmapped_area); - To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
