Re: [PATCH v2 net] skbuff: back tiny skbs with kmalloc() in __netdev_alloc_skb() too
Date: Sat Jan 16 2021 - 22:13:22 EST
This patch was applied to netdev/net.git (refs/heads/master):
On Fri, 15 Jan 2021 15:04:40 +0000 you wrote:
> Commit 3226b158e67c ("net: avoid 32 x truesize under-estimation for
> tiny skbs") ensured that skbs with data size lower than 1025 bytes
> will be kmalloc'ed to avoid excessive page cache fragmentation and
> memory consumption.
> However, the fix adressed only __napi_alloc_skb() (primarily for
> virtio_net and napi_get_frags()), but the issue can still be achieved
> through __netdev_alloc_skb(), which is still used by several drivers.
> Drivers often allocate a tiny skb for headers and place the rest of
> the frame to frags (so-called copybreak).
> Mirror the condition to __netdev_alloc_skb() to handle this case too.
Here is the summary with links:
- [v2,net] skbuff: back tiny skbs with kmalloc() in __netdev_alloc_skb() too
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