diff options
author | Chen, Kenneth W <kenneth.w.chen@intel.com> | 2006-12-06 23:31:39 -0500 |
---|---|---|
committer | Linus Torvalds <torvalds@woody.osdl.org> | 2006-12-07 11:39:20 -0500 |
commit | c0a499c2c42992cff097b38be29d2ba60d2fd99a (patch) | |
tree | e02e80f190eb6f4eedb2c991d92840137505f8f8 /mm/hugetlb.c | |
parent | 0798e5193cd70f6c867ec176d7730589f944c627 (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.c | 5 |
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)); |