Commit a4bb3ecd authored by Naoya Horiguchi's avatar Naoya Horiguchi Committed by Linus Torvalds

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: default avatarNaoya Horiguchi <>
Acked-by: default avatarKirill A. Shutemov <>
Signed-off-by: default avatarAndrew Morton <>
Signed-off-by: default avatarLinus Torvalds <>
parent b3b3a99c
......@@ -2228,7 +2228,8 @@ int set_page_dirty(struct page *page)
* it will confuse readahead and make it restart the size rampup
* process. But it's a trivial problem.
if (PageReclaim(page))
if (!spd)
spd = __set_page_dirty_buffers;
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