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Breno Leitao says:
====================
net: netpoll: Improve SKB pool management
The netpoll subsystem pre-allocates 32 SKBs in a pool for emergency use
during out-of-memory conditions. However, the current implementation has
several inefficiencies:
* The SKB pool, once allocated, is never freed:
* Resources remain allocated even after netpoll users are removed
* Failed initialization can leave pool populated forever
* The global pool design makes resource tracking difficult
This series addresses these issues through three patches:
Patch 1 ("net: netpoll: Individualize the skb pool"):
- Replace global pool with per-user pools in netpoll struct
Patch 2 ("net: netpoll: flush skb pool during cleanup"):
- Properly free pool resources during netconsole cleanup
These changes improve resource management and make the code more
maintainable. As a side benefit, the improved structure would allow
netpoll to be modularized if desired in the future.
v2: https://lore.kernel.org/20241107-skb_buffers_v2-v2-0-288c6264ba4f@debian.org
v1: https://lore.kernel.org/20241025142025.3558051-1-leitao@debian.org
====================
Link: https://patch.msgid.link/20241114-skb_buffers_v2-v3-0-9be9f52a8b69@debian.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Linux kernel
============
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