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io_uring: cleanup __io_prep_rw

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Switch on attr_type_mask once, and also do away with the local variable
for attr_ptr.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://patch.msgid.link/20261005141954.1353351-2-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2026-10-05 16:19:43 +02:00 committed by Jens Axboe
parent 68477e4c56
commit 7e3d3ed4c2
1 changed files with 7 additions and 13 deletions
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20
io_uring/rw.c
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@ -249,7 +249,6 @@ static int __io_prep_rw(struct io_kiocb *req, const struct io_uring_sqe *sqe,
struct io_rw *rw = io_kiocb_to_cmd(req, struct io_rw);
struct io_async_rw *io;
unsigned ioprio;
u64 attr_type_mask;
int ret;
if (io_rw_alloc_async(req))
@ -282,19 +281,14 @@ static int __io_prep_rw(struct io_kiocb *req, const struct io_uring_sqe *sqe,
rw->addr = READ_ONCE(sqe->addr);
rw->len = READ_ONCE(sqe->len);
rw->flags = (__force rwf_t) READ_ONCE(sqe->rw_flags);
attr_type_mask = READ_ONCE(sqe->attr_type_mask);
if (attr_type_mask) {
u64 attr_ptr;
/* only PI attribute is supported currently */
if (attr_type_mask != IORING_RW_ATTR_FLAG_PI)
return -EINVAL;
attr_ptr = READ_ONCE(sqe->attr_ptr);
return io_prep_rw_pi(req, rw, ddir, attr_ptr);
switch (READ_ONCE(sqe->attr_type_mask)) {
case 0:
return 0;
case IORING_RW_ATTR_FLAG_PI:
return io_prep_rw_pi(req, rw, ddir, READ_ONCE(sqe->attr_ptr));
default:
return -EINVAL;
}
return 0;
}
static int io_rw_do_import(struct io_kiocb *req, int ddir)