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56 lines
1.9 KiB
Diff
56 lines
1.9 KiB
Diff
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From 5cc33f139e11b893ff6dc60d8a0ae865a65521ac Mon Sep 17 00:00:00 2001
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From: Douglas Anderson <dianders@chromium.org>
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Date: Thu, 6 Apr 2023 17:14:26 -0700
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Subject: [PATCH] r8152: Add __GFP_NOWARN to big allocations
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When memory is a little tight on my system, it's pretty easy to see
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warnings that look like this.
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ksoftirqd/0: page allocation failure: order:3, mode:0x40a20(GFP_ATOMIC|__GFP_COMP), nodemask=(null),cpuset=/,mems_allowed=0
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...
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Call trace:
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dump_backtrace+0x0/0x1e8
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show_stack+0x20/0x2c
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dump_stack_lvl+0x60/0x78
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dump_stack+0x18/0x38
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warn_alloc+0x104/0x174
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__alloc_pages+0x588/0x67c
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alloc_rx_agg+0xa0/0x190 [r8152 ...]
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r8152_poll+0x270/0x760 [r8152 ...]
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__napi_poll+0x44/0x1ec
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net_rx_action+0x100/0x300
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__do_softirq+0xec/0x38c
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run_ksoftirqd+0x38/0xec
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smpboot_thread_fn+0xb8/0x248
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kthread+0x134/0x154
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ret_from_fork+0x10/0x20
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On a fragmented system it's normal that order 3 allocations will
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sometimes fail, especially atomic ones. The driver handles these
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failures fine and the WARN just creates spam in the logs for this
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case. The __GFP_NOWARN flag is exactly for this situation, so add it
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to the allocation.
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NOTE: my testing is on a 5.15 system, but there should be no reason
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that this would be fundamentally different on a mainline kernel.
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Signed-off-by: Douglas Anderson <dianders@chromium.org>
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Acked-by: Hayes Wang <hayeswang@realtek.com>
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Link: https://lore.kernel.org/r/20230406171411.1.I84dbef45786af440fd269b71e9436a96a8e7a152@changeid
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Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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---
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drivers/net/usb/r8152.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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--- a/drivers/net/usb/r8152.c
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+++ b/drivers/net/usb/r8152.c
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@@ -1944,7 +1944,7 @@ static struct rx_agg *alloc_rx_agg(struc
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if (!rx_agg)
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return NULL;
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- rx_agg->page = alloc_pages(mflags | __GFP_COMP, order);
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+ rx_agg->page = alloc_pages(mflags | __GFP_COMP | __GFP_NOWARN, order);
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if (!rx_agg->page)
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goto free_rx;
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