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author | 2022-09-28 18:51:27 -0700 | |
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committer | 2022-09-28 18:51:28 -0700 | |
commit | 578b054684e6ad46f6089b726c05054fc5e3cd74 (patch) | |
tree | b14a20279c36ca9fac082210cf5419e057075337 /include/net | |
parent | Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/netfil... (diff) | |
parent | net: shrink struct ubuf_info (diff) | |
download | linux-578b054684e6ad46f6089b726c05054fc5e3cd74.tar.gz linux-578b054684e6ad46f6089b726c05054fc5e3cd74.tar.bz2 linux-578b054684e6ad46f6089b726c05054fc5e3cd74.zip |
Merge branch 'shrink-struct-ubuf_info'
Pavel Begunkov says:
====================
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.
====================
Link: https://lore.kernel.org/r/cover.1663892211.git.asml.silence@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'include/net')
0 files changed, 0 insertions, 0 deletions