5.15-stable review patch. If anyone has any objections, please let me know.
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From: Shailend Chand shailend@google.com
[ Upstream commit a92f7a6feeb3884c69c1c7c1f13bccecb2228ad0 ]
Use GFP_ATOMIC when allocating pages out of the hotpath, continue to use GFP_KERNEL when allocating pages during setup.
GFP_KERNEL will allow blocking which allows it to succeed more often in a low memory enviornment but in the hotpath we do not want to allow the allocation to block.
Fixes: f5cedc84a30d2 ("gve: Add transmit and receive support") Signed-off-by: Catherine Sullivan csully@google.com Signed-off-by: David Awogbemila awogbemila@google.com Link: https://lore.kernel.org/r/20220126003843.3584521-1-awogbemila@google.com Signed-off-by: Jakub Kicinski kuba@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/ethernet/google/gve/gve_rx_dqo.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/google/gve/gve_rx_dqo.c b/drivers/net/ethernet/google/gve/gve_rx_dqo.c index 7b18b4fd9e548..d947c2c334128 100644 --- a/drivers/net/ethernet/google/gve/gve_rx_dqo.c +++ b/drivers/net/ethernet/google/gve/gve_rx_dqo.c @@ -157,7 +157,7 @@ static int gve_alloc_page_dqo(struct gve_priv *priv, int err;
err = gve_alloc_page(priv, &priv->pdev->dev, &buf_state->page_info.page, - &buf_state->addr, DMA_FROM_DEVICE, GFP_KERNEL); + &buf_state->addr, DMA_FROM_DEVICE, GFP_ATOMIC); if (err) return err;