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io_uring: rename IORING_OP_FILES_UPDATE

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IORING_OP_FILES_UPDATE will be a more generic opcode serving different
resource types, rename it into IORING_OP_RSRC_UPDATE and add subtype
handling.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/0a907133907d9af3415a8a7aa1802c6aa97c03c6.1657643355.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Pavel Begunkov 2022-07-12 21:52:48 +01:00 committed by Jens Axboe
parent 63809137eb
commit 4379d5f15b
4 changed files with 33 additions and 9 deletions
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12
include/uapi/linux/io_uring.h
View file

@ -174,7 +174,8 @@ enum io_uring_op {
IORING_OP_FALLOCATE,
IORING_OP_OPENAT,
IORING_OP_CLOSE,
IORING_OP_FILES_UPDATE,
IORING_OP_RSRC_UPDATE,
IORING_OP_FILES_UPDATE = IORING_OP_RSRC_UPDATE,
IORING_OP_STATX,
IORING_OP_READ,
IORING_OP_WRITE,
@ -223,6 +224,7 @@ enum io_uring_op {
#define IORING_TIMEOUT_ETIME_SUCCESS (1U << 5)
#define IORING_TIMEOUT_CLOCK_MASK (IORING_TIMEOUT_BOOTTIME | IORING_TIMEOUT_REALTIME)
#define IORING_TIMEOUT_UPDATE_MASK (IORING_TIMEOUT_UPDATE | IORING_LINK_TIMEOUT_UPDATE)
/*
* sqe->splice_flags
* extends splice(2) flags
@ -289,6 +291,14 @@ enum io_uring_op {
*/
#define IORING_ACCEPT_MULTISHOT (1U << 0)
/*
* IORING_OP_RSRC_UPDATE flags
*/
enum {
IORING_RSRC_UPDATE_FILES,
};
/*
* IORING_OP_MSG_RING command types, stored in sqe->addr
*/

9
io_uring/opdef.c
View file

@ -246,12 +246,13 @@ const struct io_op_def io_op_defs[] = {
.prep = io_close_prep,
.issue = io_close,
},
[IORING_OP_FILES_UPDATE] = {
[IORING_OP_RSRC_UPDATE] = {
.audit_skip = 1,
.iopoll = 1,
.name = "FILES_UPDATE",
.prep = io_files_update_prep,
.issue = io_files_update,
.name = "RSRC_UPDATE",
.prep = io_rsrc_update_prep,
.issue = io_rsrc_update,
.ioprio = 1,
},
[IORING_OP_STATX] = {
.audit_skip = 1,

17
io_uring/rsrc.c
View file

@ -21,6 +21,7 @@ struct io_rsrc_update {
u64 arg;
u32 nr_args;
u32 offset;
int type;
};
static int io_sqe_buffer_register(struct io_ring_ctx *ctx, struct iovec *iov,
@ -657,7 +658,7 @@ __cold int io_register_rsrc(struct io_ring_ctx *ctx, void __user *arg,
return -EINVAL;
}
int io_files_update_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
int io_rsrc_update_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
{
struct io_rsrc_update *up = io_kiocb_to_cmd(req);
@ -671,6 +672,7 @@ int io_files_update_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
if (!up->nr_args)
return -EINVAL;
up->arg = READ_ONCE(sqe->addr);
up->type = READ_ONCE(sqe->ioprio);
return 0;
}
@ -713,7 +715,7 @@ static int io_files_update_with_index_alloc(struct io_kiocb *req,
return ret;
}
int io_files_update(struct io_kiocb *req, unsigned int issue_flags)
static int io_files_update(struct io_kiocb *req, unsigned int issue_flags)
{
struct io_rsrc_update *up = io_kiocb_to_cmd(req);
struct io_ring_ctx *ctx = req->ctx;
@ -742,6 +744,17 @@ int io_files_update(struct io_kiocb *req, unsigned int issue_flags)
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);
switch (up->type) {
case IORING_RSRC_UPDATE_FILES:
return io_files_update(req, issue_flags);
}
return -EINVAL;
}
int io_queue_rsrc_removal(struct io_rsrc_data *data, unsigned idx,
struct io_rsrc_node *node, void *rsrc)
{

4
io_uring/rsrc.h
View file

@ -167,6 +167,6 @@ static inline u64 *io_get_tag_slot(struct io_rsrc_data *data, unsigned int idx)
return &data->tags[table_idx][off];
}
int io_files_update(struct io_kiocb *req, unsigned int issue_flags);
int io_files_update_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe);
int io_rsrc_update(struct io_kiocb *req, unsigned int issue_flags);
int io_rsrc_update_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe);
#endif