RDMA/siw: drop duplicate check_app_limited in siw_tcp_sendpages

After do_tcp_sendpages() was converted to use MSG_SPLICE_PAGES and
later inlined as direct tcp_sendmsg_locked() calls, callers that
previously needed an explicit tcp_rate_check_app_limited(sk) to cover
do_tcp_sendpages() no longer need it. tcp_sendmsg_locked() performs the
check on every path that queues data, making the outer call redundant.

The site changed here, siw_tcp_sendpages() in siw_qp_tx.c, holds the socket
lock and invokes tcp_sendmsg_locked() on every iteration. The early-return
paths in tcp_sendmsg_locked() that skip tcp_rate_check_app_limited() - the
MSG_ZEROCOPY allocation failure and MSG_FASTOPEN branches - return without
queueing any MSG_SPLICE_PAGES data, so there is no functional consequence
from omitting the outer check.

Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn>
Link: https://patch.msgid.link/32ef40cc81486adb8f2d43585224ab44d7e77f73.1790234916.git.tanggeliang@kylinos.cn
Acked-by: Bernard Metzler <bernard.metzler@linux.dev>
Signed-off-by: Leon Romanovsky <leon@kernel.org>

0 files changed, 0 insertions, 0 deletions