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authorNamhyung Kim <namhyung@gmail.com>2010-10-26 14:22:00 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-10-26 16:52:09 -0700
commite6219ec8195efd5640765e657810f262ad9d1a92 (patch)
tree36c718adce5018fe87398fc7d8ebb7c1dfb14646
parent25ca1d6c02fe1c6d90d918867ef670d323725458 (diff)
downloadvexpress-lsk-e6219ec8195efd5640765e657810f262ad9d1a92.tar.gz
mm: add lock release annotation on do_wp_page()
The do_wp_page() releases @ptl but was missing proper annotation. Add it. This removes following warnings from sparse: mm/memory.c:2337:9: warning: context imbalance in 'do_wp_page' - unexpected unlock mm/memory.c:3142:19: warning: context imbalance in 'handle_mm_fault' - different lock contexts for basic block Signed-off-by: Namhyung Kim <namhyung@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--mm/memory.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/mm/memory.c b/mm/memory.c
index 4ce24a4d5d4..01bdf9dbbfa 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -2108,6 +2108,7 @@ static inline void cow_user_page(struct page *dst, struct page *src, unsigned lo
static int do_wp_page(struct mm_struct *mm, struct vm_area_struct *vma,
unsigned long address, pte_t *page_table, pmd_t *pmd,
spinlock_t *ptl, pte_t orig_pte)
+ __releases(ptl)
{
struct page *old_page, *new_page;
pte_t entry;