diff options
| author | Yasunori Goto <y-goto@jp.fujitsu.com> | 2007-10-16 01:26:14 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-10-16 09:43:02 -0700 |
| commit | 98f3cfc1dc7a53b629d43b7844a9b3f786213048 (patch) | |
| tree | de98ff0e3c25b01863c31abc0f3054de978b9ef8 /include | |
| parent | 48e94196a533dbee17c252bf80d0310fb8c8c2eb (diff) | |
memory hotplug: Hot-add with sparsemem-vmemmap
This patch is to avoid panic when memory hot-add is executed with
sparsemem-vmemmap. Current vmemmap-sparsemem code doesn't support memory
hot-add. Vmemmap must be populated when hot-add. This is for
2.6.23-rc2-mm2.
Todo: # Even if this patch is applied, the message "[xxxx-xxxx] potential
offnode page_structs" is displayed. To allocate memmap on its node,
memmap (and pgdat) must be initialized itself like chicken and
egg relationship.
# vmemmap_unpopulate will be necessary for followings.
- For cancel hot-add due to error.
- For unplug.
Signed-off-by: Yasunori Goto <y-goto@jp.fujitsu.com>
Cc: Andy Whitcroft <apw@shadowen.org>
Cc: Christoph Lameter <clameter@sgi.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/mm.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h index 292c6862375..cc551f06728 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1147,7 +1147,7 @@ extern int randomize_va_space; const char * arch_vma_name(struct vm_area_struct *vma); -struct page *sparse_early_mem_map_populate(unsigned long pnum, int nid); +struct page *sparse_mem_map_populate(unsigned long pnum, int nid); pgd_t *vmemmap_pgd_populate(unsigned long addr, int node); pud_t *vmemmap_pud_populate(pgd_t *pgd, unsigned long addr, int node); pmd_t *vmemmap_pmd_populate(pud_t *pud, unsigned long addr, int node); |