-stable review patch. If anyone has any objections, please let us know. ------------------ From: Adam Litke Here's another breakage as a result of shared memory stacked files :( The NUMA policy for a VMA is determined by checking the following (in the order given): 1) vma->vm_ops->get_policy() (if defined) 2) vma->vm_policy (if defined) 3) task->mempolicy (if defined) 4) Fall back to default_policy By switching to stacked files for shared memory, get_policy() is now always set to shm_get_policy which is a wrapper function. This causes us to stop at step 1, which yields NULL for hugetlb instead of task->mempolicy which was the previous (and correct) result. This patch modifies the shm_get_policy() wrapper to maintain steps 1-3 for the wrapped vm_ops. (akpm: the refcounting of mempolicies is busted and this patch does nothing to improve it) Signed-off-by: Adam Litke Acked-by: William Irwin Cc: dean gaudet Cc: Christoph Lameter Cc: Andi Kleen Signed-off-by: Andrew Morton Signed-off-by: Chris Wright Signed-off-by: Greg Kroah-Hartman --- ipc/shm.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) --- linux-2.6.21.6.orig/ipc/shm.c +++ linux-2.6.21.6/ipc/shm.c @@ -254,8 +254,10 @@ struct mempolicy *shm_get_policy(struct if (sfd->vm_ops->get_policy) pol = sfd->vm_ops->get_policy(vma, addr); - else + else if (vma->vm_policy) pol = vma->vm_policy; + else + pol = current->mempolicy; return pol; } #endif -- - 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/