io_uring: add feature flag for rsrc tags

Add IORING_FEAT_RSRC_TAGS indicating that io_uring supports a bunch of new IORING_REGISTER operations, in particular IORING_REGISTER_[FILES[,UPDATE]2,BUFFERS[2,UPDATE]] that support rsrc tagging, and also indicating implemented dynamic fixed buffer updates.

Pavel Begunkov committed 5 years ago

Commit 96905571 parent 992da012 files · +3 −1Browse files

Unified · Split

2 files

fs/io_uring.c +2 −1
include/uapi/linux/io_uring.h +1 −0

fs/io_uring.c+2−1

@@ -9676,7 +9676,8 @@ static int io_uring_create(unsigned entries, struct io_uring_params *p, · 9675 unmodified lines
9676	IORING_FEAT_SUBMIT_STABLE \| IORING_FEAT_RW_CUR_POS \|	9676	IORING_FEAT_SUBMIT_STABLE \| IORING_FEAT_RW_CUR_POS \|
9677	IORING_FEAT_CUR_PERSONALITY \| IORING_FEAT_FAST_POLL \|	9677	IORING_FEAT_CUR_PERSONALITY \| IORING_FEAT_FAST_POLL \|
9678	IORING_FEAT_POLL_32BITS \| IORING_FEAT_SQPOLL_NONFIXED \|	9678	IORING_FEAT_POLL_32BITS \| IORING_FEAT_SQPOLL_NONFIXED \|
9679	IORING_FEAT_EXT_ARG \| IORING_FEAT_NATIVE_WORKERS;	9679	IORING_FEAT_EXT_ARG \| IORING_FEAT_NATIVE_WORKERS \|
		9680	IORING_FEAT_RSRC_TAGS;
9680		9681
9681	if (copy_to_user(params, p, sizeof(*p))) {	9682	if (copy_to_user(params, p, sizeof(*p))) {
9682	ret = -EFAULT;	9683	ret = -EFAULT;

include/uapi/linux/io_uring.h+1−0

@@ -280,6 +280,7 @@ struct io_uring_params { · 279 unmodified lines
280	#define IORING_FEAT_SQPOLL_NONFIXED (1U << 7)	280	#define IORING_FEAT_SQPOLL_NONFIXED (1U << 7)
281	#define IORING_FEAT_EXT_ARG (1U << 8)	281	#define IORING_FEAT_EXT_ARG (1U << 8)
282	#define IORING_FEAT_NATIVE_WORKERS (1U << 9)	282	#define IORING_FEAT_NATIVE_WORKERS (1U << 9)
		283	#define IORING_FEAT_RSRC_TAGS (1U << 10)
283		284
284	/*	285	/*
285	* io_uring_register(2) opcodes and arguments	286	* io_uring_register(2) opcodes and arguments