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authorWang Sheng-Hui <shhuiw@gmail.com>2011-11-17 10:53:50 +0100
committerJiri Kosina <jkosina@suse.cz>2011-11-17 10:53:50 +0100
commit6416b9fa43537c01098f8faa5bcbebb4a275297d (patch)
treec970bac752f8ea0e0faa4273b459b2ae67d05c4d /mm/page_alloc.c
parent7433f2b78cb35cacf1799faa3b068255a6ef5f1f (diff)
downloadop-kernel-dev-6416b9fa43537c01098f8faa5bcbebb4a275297d.zip
op-kernel-dev-6416b9fa43537c01098f8faa5bcbebb4a275297d.tar.gz
mm: cleanup the comment for head/tail pages of compound pages in mm/page_alloc.c
Only tail pages point at the head page using their ->first_page fields. Signed-off-by: Wang Sheng-Hui <shhuiw@gmail.com> Reviewed-by: Michal Hocko <mhocko@suse.cz> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'mm/page_alloc.c')
-rw-r--r--mm/page_alloc.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 9dd443d..e51802d 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -333,8 +333,8 @@ out:
*
* The remaining PAGE_SIZE pages are called "tail pages".
*
- * All pages have PG_compound set. All pages have their ->private pointing at
- * the head page (even the head page has this).
+ * All pages have PG_compound set. All tail pages have their ->first_page
+ * pointing at the head page.
*
* The first tail page's ->lru.next holds the address of the compound page's
* put_page() function. Its ->lru.prev holds the order of allocation.
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