Commit 4e0377a1 authored by noah's avatar noah Committed by Jens Axboe
Browse files

io_uring: Add skip option for __io_sqe_files_update 



This patch adds support for skipping a file descriptor when using
IORING_REGISTER_FILES_UPDATE.  __io_sqe_files_update will skip fds set
to IORING_REGISTER_FILES_SKIP. IORING_REGISTER_FILES_SKIP is inturn
added as a #define in io_uring.h

Signed-off-by: default avatarnoah <goldstein.w.n@gmail.com>
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 67973b93

fs/io_uring.c

+3 −0
Original line number Diff line number Diff line
@@ -8038,6 +8038,9 @@ static int __io_sqe_files_update(struct io_ring_ctx *ctx, 
			err = -EFAULT;

			break;

		}

		if (fd == IORING_REGISTER_FILES_SKIP)

			continue;



		i = array_index_nospec(up->offset + done, ctx->nr_user_files);

		table = &ctx->file_data->table[i >> IORING_FILE_TABLE_SHIFT];

		index = i & IORING_FILE_TABLE_MASK;

include/uapi/linux/io_uring.h

+3 −0
Original line number Diff line number Diff line
@@ -298,6 +298,9 @@ struct io_uring_rsrc_update { 
	__aligned_u64 data;

};



/* Skip updating fd indexes set to this value in the fd table */

#define IORING_REGISTER_FILES_SKIP	(-2)



#define IO_URING_OP_SUPPORTED	(1U << 0)



struct io_uring_probe_op {