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authorChen, Kenneth W <kenneth.w.chen@intel.com>2006-12-06 23:31:39 -0500
committerLinus Torvalds <torvalds@woody.osdl.org>2006-12-07 11:39:20 -0500
commitc0a499c2c42992cff097b38be29d2ba60d2fd99a (patch)
treee02e80f190eb6f4eedb2c991d92840137505f8f8 /mm/hugetlb.c
parent0798e5193cd70f6c867ec176d7730589f944c627 (diff)
[PATCH] __unmap_hugepage_range(): add comment
Signed-off-by: Ken Chen <kenneth.w.chen@intel.com> Cc: David Gibson <david@gibson.dropbear.id.au> Cc: Hugh Dickins <hugh@veritas.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'mm/hugetlb.c')
-rw-r--r--mm/hugetlb.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index a088f593a80..f7355bf2f28 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -365,6 +365,11 @@ void __unmap_hugepage_range(struct vm_area_struct *vma, unsigned long start,
365 pte_t pte; 365 pte_t pte;
366 struct page *page; 366 struct page *page;
367 struct page *tmp; 367 struct page *tmp;
368 /*
369 * A page gathering list, protected by per file i_mmap_lock. The
370 * lock is used to avoid list corruption from multiple unmapping
371 * of the same page since we are using page->lru.
372 */
368 LIST_HEAD(page_list); 373 LIST_HEAD(page_list);
369 374
370 WARN_ON(!is_vm_hugetlb_page(vma)); 375 WARN_ON(!is_vm_hugetlb_page(vma));