[PATCH] powerpc: fix idr locking in init_new_context
From: Sonny Rao <hidden>
Date: 2006-06-27 12:46:13
Also in:
lkml
We always need to serialize accesses to mmu_context_idr. I hit this bug when testing with a small number of mmu contexts. Signed-off-by: Sonny Rao <redacted>
--- a/arch/powerpc/mm/mmu_context_64.c
+++ b/arch/powerpc/mm/mmu_context_64.c@@ -44,7 +44,9 @@ again: return err; if (index > MAX_CONTEXT) { + spin_lock(&mmu_context_lock); idr_remove(&mmu_context_idr, index); + spin_unlock(&mmu_context_lock); return -ENOMEM; }