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Revert "io_uring: add zc notification flush requests"

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This reverts commit 492dddb4f6.

Soon we won't have the very notion of notification flushing, so remove
notification flushing requests.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/8850334ca56e65b413cb34fd158db81d7b2865a3.1662027856.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Pavel Begunkov 2022-09-01 11:54:01 +01:00 committed by Jens Axboe
parent 75847100c3
commit 23c12d5fc0
2 changed files with 0 additions and 39 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

1
include/uapi/linux/io_uring.h
View file

@ -301,7 +301,6 @@ enum io_uring_op {
*/
enum {
IORING_RSRC_UPDATE_FILES,
IORING_RSRC_UPDATE_NOTIF,
};
/*

38
io_uring/rsrc.c
View file

@ -15,7 +15,6 @@
#include "io_uring.h"
#include "openclose.h"
#include "rsrc.h"
#include "notif.h"
struct io_rsrc_update {
struct file *file;
@ -741,41 +740,6 @@ static int io_files_update(struct io_kiocb *req, unsigned int issue_flags)
return IOU_OK;
}
static int io_notif_update(struct io_kiocb *req, unsigned int issue_flags)
{
struct io_rsrc_update *up = io_kiocb_to_cmd(req, struct io_rsrc_update);
struct io_ring_ctx *ctx = req->ctx;
unsigned len = up->nr_args;
unsigned idx_end, idx = up->offset;
int ret = 0;
io_ring_submit_lock(ctx, issue_flags);
if (unlikely(check_add_overflow(idx, len, &idx_end))) {
ret = -EOVERFLOW;
goto out;
}
if (unlikely(idx_end > ctx->nr_notif_slots)) {
ret = -EINVAL;
goto out;
}
for (; idx < idx_end; idx++) {
struct io_notif_slot *slot = &ctx->notif_slots[idx];
if (!slot->notif)
continue;
if (up->arg)
slot->tag = up->arg;
io_notif_slot_flush_submit(slot, issue_flags);
}
out:
io_ring_submit_unlock(ctx, issue_flags);
if (ret < 0)
req_set_fail(req);
io_req_set_res(req, ret, 0);
return IOU_OK;
}
int io_rsrc_update(struct io_kiocb *req, unsigned int issue_flags)
{
struct io_rsrc_update *up = io_kiocb_to_cmd(req, struct io_rsrc_update);
@ -783,8 +747,6 @@ int io_rsrc_update(struct io_kiocb *req, unsigned int issue_flags)
switch (up->type) {
case IORING_RSRC_UPDATE_FILES:
return io_files_update(req, issue_flags);
case IORING_RSRC_UPDATE_NOTIF:
return io_notif_update(req, issue_flags);
}
return -EINVAL;
}