From: Ingo Molnar <[email protected]>
teach special (recursive) locking code to the lock validator. Has no
effect on non-lockdep kernels.
Signed-off-by: Ingo Molnar <[email protected]>
Signed-off-by: Arjan van de Ven <[email protected]>
---
mm/memory.c | 2 +-
mm/mremap.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
Index: linux/mm/memory.c
===================================================================
--- linux.orig/mm/memory.c
+++ linux/mm/memory.c
@@ -509,7 +509,7 @@ again:
return -ENOMEM;
src_pte = pte_offset_map_nested(src_pmd, addr);
src_ptl = pte_lockptr(src_mm, src_pmd);
- spin_lock(src_ptl);
+ spin_lock_nested(src_ptl, SINGLE_DEPTH_NESTING);
do {
/*
Index: linux/mm/mremap.c
===================================================================
--- linux.orig/mm/mremap.c
+++ linux/mm/mremap.c
@@ -97,7 +97,7 @@ static void move_ptes(struct vm_area_str
new_pte = pte_offset_map_nested(new_pmd, new_addr);
new_ptl = pte_lockptr(mm, new_pmd);
if (new_ptl != old_ptl)
- spin_lock(new_ptl);
+ spin_lock_nested(new_ptl, SINGLE_DEPTH_NESTING);
for (; old_addr < old_end; old_pte++, old_addr += PAGE_SIZE,
new_pte++, new_addr += PAGE_SIZE) {
-
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