David Chinner wrote:
> Allow lazy unmapping of vmap()d regions be taking a reference
> on each page in the region being vmap()ed. The page references
> get released after the region is vunmap()ed, thereby ensuring
> we don't leave stray mappings on freed pages that could lead to
> problems pages being reallocated with incorrect mappings
> associated with them.
>
> Tested with XFS filesystems with 64k directory blocks with
> dirstress and XFSQA.
>
> Version 3:
> - compile on latest -git
>
Not quite:
CC mm/vmalloc.o
/home/jeremy/hg/xen/paravirt/linux/mm/vmalloc.c: In function
'vm_area_alloc_pagearray':
/home/jeremy/hg/xen/paravirt/linux/mm/vmalloc.c:338: error: 'GFP_LEVEL_MASK'
undeclared (first use in this function)
/home/jeremy/hg/xen/paravirt/linux/mm/vmalloc.c:338: error: (Each undeclared
identifier is reported only once
/home/jeremy/hg/xen/paravirt/linux/mm/vmalloc.c:338: error: for each function
it appears in.)
make[3]: *** [mm/vmalloc.o] Error 1
make[2]: *** [mm] Error 2
make[2]: *** Waiting for unfinished jobs....
GFP_RECLAM_MASK now?
J
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