scsi: fcoe: Fix I/O path allocation

ixgbe_fcoe_ddp_setup() can be called from the main I/O path and is called
with a spin_lock held, so we have to use GFP_ATOMIC allocation instead of
GFP_KERNEL.

Link: https://lore.kernel.org/r/1596831813-9839-1-git-send-email-michael.christie@oracle.com
cc: Hannes Reinecke <hare@suse.de>
Reviewed-by: Lee Duncan <lduncan@suse.com>
Signed-off-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_fcoe.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_fcoe.c
index e67b1a5..0fcd820 100644 (file)
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_fcoe.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_fcoe.c
@@ -193,7 +193,7 @@ static int ixgbe_fcoe_ddp_setup(struct net_device *netdev, u16 xid,
        }
 
        /* alloc the udl from per cpu ddp pool */
-       ddp->udl = dma_pool_alloc(ddp_pool->pool, GFP_KERNEL, &ddp->udp);
+       ddp->udl = dma_pool_alloc(ddp_pool->pool, GFP_ATOMIC, &ddp->udp);
        if (!ddp->udl) {
                e_err(drv, "failed allocated ddp context\n");
                goto out_noddp_unmap;