mm/page-writeback: check-before-clear PageReclaim
With the page flag sanitization patchset, an invalid usage of ClearPageReclaim() is detected in set_page_dirty(). This can be called from __unmap_hugepage_range(), so let's check PageReclaim() before trying to clear it to avoid the misuse. Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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