| Date | Mon, 29 May 2006 23:26:43 +0200 | From | Ingo Molnar <> | Subject | [patch 45/61] lock validator: special locking: mm |
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From: Ingo Molnar <mingo@elte.hu>
teach special (recursive) locking code to the lock validator. Has no effect on non-lockdep kernels.
Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> --- 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) { - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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