Commit 09fdd351 authored by Caleb Sander Mateos's avatar Caleb Sander Mateos Committed by Jens Axboe
Browse files

io_uring: convert cmd_to_io_kiocb() macro to function 



The cmd_to_io_kiocb() macro applies a pointer cast to its input without
parenthesizing it. Currently all inputs are variable names, so this has
the intended effect. But since casts have relatively high precedence,
the macro would apply the cast to the wrong value if the input was a
pointer addition, for example.

Turn the macro into a static inline function to ensure the pointer cast
is applied to the full input value.

Signed-off-by: default avatarCaleb Sander Mateos <csander@purestorage.com>
Link: https://lore.kernel.org/r/20250228230305.630885-1-csander@purestorage.com


Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 0c542a69

include/linux/io_uring_types.h

+5 −1
Original line number Diff line number Diff line
@@ -607,7 +607,11 @@ static inline void io_kiocb_cmd_sz_check(size_t cmd_sz) 
	io_kiocb_cmd_sz_check(sizeof(cmd_type)) , \

	((cmd_type *)&(req)->cmd) \

)

#define cmd_to_io_kiocb(ptr)	((struct io_kiocb *) ptr)



static inline struct io_kiocb *cmd_to_io_kiocb(void *ptr)

{

	return ptr;

}



struct io_kiocb {

	union {