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Commit 45426812 authored by Nick Piggin's avatar Nick Piggin Committed by Linus Torvalds
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mm: debug check for the fault vs invalidate race 



Add a bugcheck for Andrea's pagefault vs invalidate race.  This is triggerable
for both linear and nonlinear pages with a userspace test harness (using
direct IO and truncate, respectively).

Signed-off-by: default avatarNick Piggin <npiggin@suse.de>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent f96efd58

mm/filemap.c

+1 −0
Original line number Diff line number Diff line
@@ -120,6 +120,7 @@ void __remove_from_page_cache(struct page *page) 
	page->mapping = NULL;

	mapping->nrpages--;

	__dec_zone_page_state(page, NR_FILE_PAGES);

	BUG_ON(page_mapped(page));

}



void remove_from_page_cache(struct page *page)