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| author | Kirill A. Shutemov <kirill.shutemov@linux.intel.com> | 2016-01-15 00:21:43 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-01-15 01:00:49 +0100 |
| commit | bb5b8589767a300014ba21c5984e6a4d15f0702d (patch) | |
| tree | 5ed96a77444ca8d83020e6b540b8ba3b17a5f468 /mm | |
| parent | vmstat: make vmstat_updater deferrable again and shut down on idle (diff) | |
| download | linux-bb5b8589767a300014ba21c5984e6a4d15f0702d.tar.xz linux-bb5b8589767a300014ba21c5984e6a4d15f0702d.zip | |
mm: make sure isolate_lru_page() is never called for tail page
The VM_BUG_ON_PAGE() would catch such cases if any still exists.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/vmscan.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/mm/vmscan.c b/mm/vmscan.c index bb0cbd4c9f01..108bd119f2f6 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -1426,6 +1426,7 @@ int isolate_lru_page(struct page *page) int ret = -EBUSY; VM_BUG_ON_PAGE(!page_count(page), page); + VM_BUG_ON_PAGE(PageTail(page), page); if (PageLRU(page)) { struct zone *zone = page_zone(page); |