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authorNathan Fontenot <nfont@austin.ibm.com>2008-10-18 23:27:14 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2008-10-20 11:52:32 -0400
commitde7f0cba96786cf9ec9da4532c1b25f733da9b6f (patch)
treefc0273587d255ac3f1b554b4a98229c3e231ebf6 /mm/memory_hotplug.c
parent7a6560e02556b6f0a798c247f3a557c523d9701b (diff)
memory hotplug: release memory regions in PAGES_PER_SECTION chunks
During hotplug memory remove, memory regions should be released on a PAGES_PER_SECTION size chunks. This mirrors the code in add_memory where resources are requested on a PAGES_PER_SECTION size. Attempting to release the entire memory region fails because there is not a single resource for the total number of pages being removed. Instead the resources for the pages are split in PAGES_PER_SECTION size chunks as requested during memory add. Signed-off-by: Nathan Fontenot <nfont@austin.ibm.com> Signed-off-by: Badari Pulavarty <pbadari@us.ibm.com> Acked-by: Yasunori Goto <y-goto@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/memory_hotplug.c')
-rw-r--r--mm/memory_hotplug.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 3b4975815141..6837a1014372 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -324,11 +324,11 @@ int __remove_pages(struct zone *zone, unsigned long phys_start_pfn,
324 BUG_ON(phys_start_pfn & ~PAGE_SECTION_MASK); 324 BUG_ON(phys_start_pfn & ~PAGE_SECTION_MASK);
325 BUG_ON(nr_pages % PAGES_PER_SECTION); 325 BUG_ON(nr_pages % PAGES_PER_SECTION);
326 326
327 release_mem_region(phys_start_pfn << PAGE_SHIFT, nr_pages * PAGE_SIZE);
328
329 sections_to_remove = nr_pages / PAGES_PER_SECTION; 327 sections_to_remove = nr_pages / PAGES_PER_SECTION;
330 for (i = 0; i < sections_to_remove; i++) { 328 for (i = 0; i < sections_to_remove; i++) {
331 unsigned long pfn = phys_start_pfn + i*PAGES_PER_SECTION; 329 unsigned long pfn = phys_start_pfn + i*PAGES_PER_SECTION;
330 release_mem_region(pfn << PAGE_SHIFT,
331 PAGES_PER_SECTION << PAGE_SHIFT);
332 ret = __remove_section(zone, __pfn_to_section(pfn)); 332 ret = __remove_section(zone, __pfn_to_section(pfn));
333 if (ret) 333 if (ret)
334 break; 334 break;