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| author | Pavel Begunkov <asml.silence@gmail.com> | 2022-07-12 21:52:31 +0100 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2022-07-19 14:20:54 -0700 |
| commit | 753f1ca4e1e50248a1b760c9774d6d6b354562cc (patch) | |
| tree | 2d424a8b10b6dce562b451787136367a6ad7371c /tools/testing/selftests/net/af_unix/unix_connect.c | |
| parent | ebe73a284f4de8c5d401adeccd9b8fe3183b6e95 (diff) | |
net: introduce managed frags infrastructure
Some users like io_uring can do page pinning more efficiently, so we
want a way to delegate referencing to other subsystems. For that add
a new flag called SKBFL_MANAGED_FRAG_REFS. When set, skb doesn't hold
page references and upper layers are responsivle to managing page
lifetime.
It's allowed to convert skbs from managed to normal by calling
skb_zcopy_downgrade_managed(). The function will take all needed
page references and clear the flag. It's needed, for instance,
to avoid mixing managed modes.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'tools/testing/selftests/net/af_unix/unix_connect.c')
0 files changed, 0 insertions, 0 deletions