diff options
| author | Joonsoo Kim | 2016-05-20 02:12:06 +0200 |
|---|---|---|
| committer | Linus Torvalds | 2016-05-20 04:12:14 +0200 |
| commit | b9eb63191a6ad70127ebdd83650b810cdc1d1117 (patch) | |
| tree | 0febc4e2a50ca34b02bc41a493609ec8238f4b1e /mm/page_isolation.c | |
| parent | mm/hugetlb: add same zone check in pfn_range_valid_gigantic() (diff) | |
| download | kernel-qcow2-linux-b9eb63191a6ad70127ebdd83650b810cdc1d1117.tar.gz kernel-qcow2-linux-b9eb63191a6ad70127ebdd83650b810cdc1d1117.tar.xz kernel-qcow2-linux-b9eb63191a6ad70127ebdd83650b810cdc1d1117.zip | |
mm/memory_hotplug: add comment to some functions related to memory hotplug
__offline_isolated_pages() and test_pages_isolated() are used by memory
hotplug. These functions require that range is in a single zone but
there is no code to do this because memory hotplug checks it before
calling these functions. To avoid confusing future user of these
functions, this patch adds comments to them.
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Rik van Riel <riel@redhat.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Laura Abbott <lauraa@codeaurora.org>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: Michal Nazarewicz <mina86@mina86.com>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/page_isolation.c')
| -rw-r--r-- | mm/page_isolation.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/mm/page_isolation.c b/mm/page_isolation.c index 67bedd18429c..612122bf6a42 100644 --- a/mm/page_isolation.c +++ b/mm/page_isolation.c @@ -246,6 +246,7 @@ __test_page_isolated_in_pageblock(unsigned long pfn, unsigned long end_pfn, return pfn; } +/* Caller should ensure that requested range is in a single zone */ int test_pages_isolated(unsigned long start_pfn, unsigned long end_pfn, bool skip_hwpoisoned_pages) { |