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| author | Nathan Fontenot <nfont@austin.ibm.com> | 2008-10-19 05:27:14 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-10-20 17:52:32 +0200 |
| commit | de7f0cba96786cf9ec9da4532c1b25f733da9b6f (patch) | |
| tree | fc0273587d255ac3f1b554b4a98229c3e231ebf6 | |
| parent | documentation: clarify dirty_ratio and dirty_background_ratio description (diff) | |
| download | linux-de7f0cba96786cf9ec9da4532c1b25f733da9b6f.tar.xz linux-de7f0cba96786cf9ec9da4532c1b25f733da9b6f.zip | |
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>
| -rw-r--r-- | mm/memory_hotplug.c | 4 |
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, BUG_ON(phys_start_pfn & ~PAGE_SECTION_MASK); BUG_ON(nr_pages % PAGES_PER_SECTION); - release_mem_region(phys_start_pfn << PAGE_SHIFT, nr_pages * PAGE_SIZE); - sections_to_remove = nr_pages / PAGES_PER_SECTION; for (i = 0; i < sections_to_remove; i++) { unsigned long pfn = phys_start_pfn + i*PAGES_PER_SECTION; + release_mem_region(pfn << PAGE_SHIFT, + PAGES_PER_SECTION << PAGE_SHIFT); ret = __remove_section(zone, __pfn_to_section(pfn)); if (ret) break; |