shrink struct ubuf_info
Status from this message: This series was applied to netdev/net-next.git (master)
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Patches in v1 All 4 applied
| # | Subject and files | Size | Replies | Applied |
|---|---|---|---|---|
| 1/4 | net: introduce struct ubuf_info_msgzcinclude/ | +21 | 0 replies | Applied |
| 2/4 | xen/netback: use struct ubuf_info_msgzcdrivers/ drivers/ drivers/ | +7 | 0 replies | Applied |
| 3/4 | vhost/net: use struct ubuf_info_msgzcdrivers/ | +8 | 0 replies | Applied |
| 4/4 | net: shrink struct ubuf_infoinclude/ net/ net/ +2 more | +28 | 0 replies | Applied |
Reviews trailers per patch
None of the 4 patches has a Reviewed-by or Acked-by of their own; the series has one for all of them.
| Patch | Paolo Abeni |
|---|---|
| Series | A-b |
| 1/4 | |
| 2/4 | |
| 3/4 | |
| 4/4 |
Trailers given in replies are filled; those carried in the patches from earlier versions are outlined with dashes.
Cover letter [PATCH net-next 0/4] shrink struct ubuf_info
struct ubuf_info is large but not all fields are needed for all cases. We have limited space in io_uring for it and large ubuf_info prevents some struct embedding, even though we use only a subset of the fields. It's also not very clean trying to use this typeless extra space.
Shrink struct ubuf_info to only necessary fields used in generic paths, namely ->callback, ->refcnt and ->flags, which take only 16 bytes. And make MSG_ZEROCOPY and some other users to embed it into a larger struct ubuf_info_msgzc mimicking the former ubuf_info.
Note, xen/vhost may also have some cleaning on top by creating new structs containing ubuf_info but with proper types.
Pavel Begunkov (4):
net: introduce struct ubuf_info_msgzc
xen/netback: use struct ubuf_info_msgzc
vhost/net: use struct ubuf_info_msgzc
net: shrink struct ubuf_info
drivers/net/xen-netback/common.h | 2 +- drivers/net/xen-netback/interface.c | 4 +-- drivers/net/xen-netback/netback.c | 7 +++--- drivers/vhost/net.c | 15 ++++++------ include/linux/skbuff.h | 11 +++++++-- net/core/skbuff.c | 38 ++++++++++++++++------------- net/ipv4/ip_output.c | 2 +- net/ipv4/tcp.c | 2 +- net/ipv6/ip6_output.c | 2 +- 9 files changed, 48 insertions(+), 35 deletions(-)
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2.37.2