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mm: downgrade VM_BUG in isolate_lru_page() to warning

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Calling isolate_lru_page() is wrong and shouldn't happen, but it not
nessesary fatal: the page just will not be isolated if it's not on LRU.

Let's downgrade the VM_BUG_ON_PAGE() to WARN_RATELIMIT().

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: David Rientjes <rientjes@google.com>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Kirill A. Shutemov 2016-02-05 15:36:36 -08:00 committed by Linus Torvalds
parent 77bf45e780
commit cf2a82ee43
1 changed files with 1 additions and 1 deletions
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2
mm/vmscan.c
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@ -1443,7 +1443,7 @@ int isolate_lru_page(struct page *page)
int ret = -EBUSY; int ret = -EBUSY;
VM_BUG_ON_PAGE(!page_count(page), page); VM_BUG_ON_PAGE(!page_count(page), page);
VM_BUG_ON_PAGE(PageTail(page), page); WARN_RATELIMIT(PageTail(page), "trying to isolate tail page");
if (PageLRU(page)) { if (PageLRU(page)) {
struct zone *zone = page_zone(page); struct zone *zone = page_zone(page);