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author | KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> | 2008-11-14 16:25:01 +0900 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-11-15 11:36:07 -0800 |
commit | 748f1a2ed7a68e15b28a1da3559afbebba121772 (patch) | |
tree | afe3e4d26bac397788be964d2cd0d89e7b0daa80 | |
parent | fb75109834ca5c5e2f0f17f0c9e20182ea55b65f (diff) | |
download | linux-748f1a2ed7a68e15b28a1da3559afbebba121772.tar.gz linux-748f1a2ed7a68e15b28a1da3559afbebba121772.tar.bz2 linux-748f1a2ed7a68e15b28a1da3559afbebba121772.zip |
mm: remove unevictable's show_page_path
Hugh Dickins reported show_page_path() is buggy and unsafe because
- lack dput() against d_find_alias()
- don't concern vma->vm_mm->owner == NULL
- lack lock_page()
it was only for debugging, so rather than trying to fix it, just remove
it now.
Reported-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
CC: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
CC: Rik van Riel <riel@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r-- | mm/vmscan.c | 35 |
1 files changed, 0 insertions, 35 deletions
diff --git a/mm/vmscan.c b/mm/vmscan.c index 3b5860294bb6..c141b3e78071 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -2368,39 +2368,6 @@ int page_evictable(struct page *page, struct vm_area_struct *vma) return 1; } -static void show_page_path(struct page *page) -{ - char buf[256]; - if (page_is_file_cache(page)) { - struct address_space *mapping = page->mapping; - struct dentry *dentry; - pgoff_t pgoff = page->index << (PAGE_CACHE_SHIFT - PAGE_SHIFT); - - spin_lock(&mapping->i_mmap_lock); - dentry = d_find_alias(mapping->host); - printk(KERN_INFO "rescued: %s %lu\n", - dentry_path(dentry, buf, 256), pgoff); - spin_unlock(&mapping->i_mmap_lock); - } else { -#if defined(CONFIG_MM_OWNER) && defined(CONFIG_MMU) - struct anon_vma *anon_vma; - struct vm_area_struct *vma; - - anon_vma = page_lock_anon_vma(page); - if (!anon_vma) - return; - - list_for_each_entry(vma, &anon_vma->head, anon_vma_node) { - printk(KERN_INFO "rescued: anon %s\n", - vma->vm_mm->owner->comm); - break; - } - page_unlock_anon_vma(anon_vma); -#endif - } -} - - /** * check_move_unevictable_page - check page for evictability and move to appropriate zone lru list * @page: page to check evictability and move to appropriate lru list @@ -2421,8 +2388,6 @@ retry: if (page_evictable(page, NULL)) { enum lru_list l = LRU_INACTIVE_ANON + page_is_file_cache(page); - show_page_path(page); - __dec_zone_state(zone, NR_UNEVICTABLE); list_move(&page->lru, &zone->lru[l].list); __inc_zone_state(zone, NR_INACTIVE_ANON + l); |