renegade-project/linux-next
2
0
Fork 0
mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-16 17:23:55 +08:00
Code

io_uring: don't take fs for recvmsg/sendmsg

Browse Source 
We don't even allow not plain data msg_control, which is disallowed in
__sys_{send,revb}msg_sock(). So no need in fs for IORING_OP_SENDMSG and
IORING_OP_RECVMSG. fs->lock is less contanged not as much as before, but
there are cases that can be, e.g. IOSQE_ASYNC.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Pavel Begunkov 2020-11-07 13:20:39 +00:00 committed by Jens Axboe
parent 2e9dbe902d
commit 10cad2c40d
1 changed files with 2 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
fs/io_uring.c
View File

@ -852,8 +852,7 @@ static const struct io_op_def io_op_defs[] = {
.pollout = 1,
.needs_async_data = 1,
.async_size = sizeof(struct io_async_msghdr),
.work_flags = IO_WQ_WORK_MM | IO_WQ_WORK_BLKCG |
IO_WQ_WORK_FS,
.work_flags = IO_WQ_WORK_MM | IO_WQ_WORK_BLKCG,
},
[IORING_OP_RECVMSG] = {
.needs_file = 1,
@ -862,8 +861,7 @@ static const struct io_op_def io_op_defs[] = {
.buffer_select = 1,
.needs_async_data = 1,
.async_size = sizeof(struct io_async_msghdr),
.work_flags = IO_WQ_WORK_MM | IO_WQ_WORK_BLKCG |
IO_WQ_WORK_FS,
.work_flags = IO_WQ_WORK_MM | IO_WQ_WORK_BLKCG,
},
[IORING_OP_TIMEOUT] = {
.needs_async_data = 1,