From 0353acecdc729c1988d5cf6489bc659aae28f54e Mon Sep 17 00:00:00 2001 From: Andrew Morton Date: Fri, 28 Mar 2003 03:20:05 -0800 Subject: [PATCH] add a might_sleep() check to kmap() kmap() can sleep, but rarely does. Add a check for kmap() being called from inappropriate contexts. --- include/linux/highmem.h | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'include') diff --git a/include/linux/highmem.h b/include/linux/highmem.h index b8334a2df0d8..8800a35efe74 100644 --- a/include/linux/highmem.h +++ b/include/linux/highmem.h @@ -18,7 +18,11 @@ unsigned int nr_free_highpages(void); static inline unsigned int nr_free_highpages(void) { return 0; } -static inline void *kmap(struct page *page) { return page_address(page); } +static inline void *kmap(struct page *page) +{ + might_sleep(); + return page_address(page); +} #define kunmap(page) do { (void) (page); } while (0) -- cgit v1.2.3