drivers/dax: Avoiding potential deadlock

PATCH New Pushkar Jambhlekar 1 participant 1 message Apr 11, 2017 Device direct access (DAX)

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Pushkar Jambhlekar

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2017-04-11 05:24 UTC #0 lore raw

PATCH 1/2 drivers/dax: Avoiding potential deadlock

dax_dev_huge_fault returning without releasing lock. Making code change to avoid this situation

Signed-off-by Pushkar Jambhlekar <[email protected]>

---
 drivers/dax/dax.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

drivers/dax/dax.c +1 -1

index 0d1ca24..fd9c4db 100644
@@ -590,7 +590,7 @@ static int dax_dev_huge_fault(struct vm_fault *vmf,
 		rc = __dax_dev_pud_fault(dax_dev, vmf);
 		break;
 	default:
-		return VM_FAULT_FALLBACK;
+		rc = VM_FAULT_FALLBACK;
 	}
 	rcu_read_unlock();

Signature · 1 line

2.7.4