Index: libcfa/src/concurrency/iocall.cfa
===================================================================
--- libcfa/src/concurrency/iocall.cfa	(revision 4ec028d82d435586644d14cd3514c2a17e1fd877)
+++ libcfa/src/concurrency/iocall.cfa	(revision 4b84e35cc70a09df095e0ebca35e4f074e690d5b)
@@ -14,4 +14,8 @@
 //
 
+//=============================================================================================
+// I/O uring backend
+//=============================================================================================
+
 #if defined(HAVE_LINUX_IO_URING_H)
 	#include <stdint.h>
@@ -23,7 +27,26 @@
 	extern void __submit( struct __io_data & ring, uint32_t idx );
 
-//=============================================================================================
-// I/O Interface
-//=============================================================================================
+	static inline void ?{}(struct io_uring_sqe & this, uint8_t opcode, int fd) {
+		this.opcode = opcode;
+		#if !defined(IOSQE_ASYNC)
+			this.flags = 0;
+		#else
+			this.flags = IOSQE_ASYNC;
+		#endif
+		this.ioprio = 0;
+		this.fd = fd;
+		this.off = 0;
+		this.addr = 0;
+		this.len = 0;
+		this.rw_flags = 0;
+		this.__pad2[0] = this.__pad2[1] = this.__pad2[2] = 0;
+	}
+
+	static inline void ?{}(struct io_uring_sqe & this, uint8_t opcode, int fd, void * addr, uint32_t len, uint64_t off ) {
+		(this){ opcode, fd };
+		this.off = off;
+		this.addr = (uint64_t)(uintptr_t)addr;
+		this.len = len;
+	}
 
 	#define __submit_prelude \
@@ -40,387 +63,394 @@
 		park( __cfaabi_dbg_ctx ); \
 		return data.result;
-	#endif
-
-	// Some forward declarations
-	#include <unistd.h>
-
-	extern "C" {
-		#include <sys/types.h>
-		#include <sys/socket.h>
-		#include <sys/syscall.h>
-
-	#if defined(HAVE_PREADV2)
-		struct iovec;
-		extern ssize_t preadv2 (int fd, const struct iovec *iov, int iovcnt, off_t offset, int flags);
-	#endif
-	#if defined(HAVE_PWRITEV2)
-		struct iovec;
-		extern ssize_t pwritev2(int fd, const struct iovec *iov, int iovcnt, off_t offset, int flags);
-	#endif
-
-		extern int fsync(int fd);
-		extern int sync_file_range(int fd, int64_t offset, int64_t nbytes, unsigned int flags);
-
-		struct msghdr;
-		struct sockaddr;
-		extern ssize_t sendmsg(int sockfd, const struct msghdr *msg, int flags);
-		extern ssize_t recvmsg(int sockfd, struct msghdr *msg, int flags);
-		extern ssize_t send(int sockfd, const void *buf, size_t len, int flags);
-		extern ssize_t recv(int sockfd, void *buf, size_t len, int flags);
-		extern int accept4(int sockfd, struct sockaddr *addr, socklen_t *addrlen, int flags);
-		extern int connect(int sockfd, const struct sockaddr *addr, socklen_t addrlen);
-
-		extern int fallocate(int fd, int mode, uint64_t offset, uint64_t len);
-		extern int posix_fadvise(int fd, uint64_t offset, uint64_t len, int advice);
-		extern int madvise(void *addr, size_t length, int advice);
-
-		extern int openat(int dirfd, const char *pathname, int flags, mode_t mode);
-		extern int close(int fd);
-
-		extern ssize_t read (int fd, void *buf, size_t count);
-	}
-
-	//-----------------------------------------------------------------------------
-	// Asynchronous operations
-	#if defined(HAVE_PREADV2)
-		ssize_t cfa_preadv2(int fd, const struct iovec *iov, int iovcnt, off_t offset, int flags) {
-			#if !defined(HAVE_LINUX_IO_URING_H) || !defined(IORING_OP_READV)
-				return preadv2(fd, iov, iovcnt, offset, flags);
-			#else
-				__submit_prelude
-
-				(*sqe){ IORING_OP_READV, fd, iov, iovcnt, offset };
-
-				__submit_wait
-			#endif
-		}
-	#endif
-
-	#if defined(HAVE_PWRITEV2)
-		ssize_t cfa_pwritev2(int fd, const struct iovec *iov, int iovcnt, off_t offset, int flags) {
-			#if !defined(HAVE_LINUX_IO_URING_H) || !defined(IORING_OP_WRITEV)
-				return pwritev2(fd, iov, iovcnt, offset, flags);
-			#else
-				__submit_prelude
-
-				(*sqe){ IORING_OP_WRITEV, fd, iov, iovcnt, offset };
-
-				__submit_wait
-			#endif
-		}
-	#endif
-
-	int cfa_fsync(int fd) {
-		#if !defined(HAVE_LINUX_IO_URING_H) || !defined(IORING_OP_FSYNC)
-			return fsync(fd);
+#endif
+
+//=============================================================================================
+// I/O Forwards
+//=============================================================================================
+
+// Some forward declarations
+#include <unistd.h>
+
+extern "C" {
+	#include <sys/types.h>
+	#include <sys/socket.h>
+	#include <sys/syscall.h>
+
+#if defined(HAVE_PREADV2)
+	struct iovec;
+	extern ssize_t preadv2 (int fd, const struct iovec *iov, int iovcnt, off_t offset, int flags);
+#endif
+#if defined(HAVE_PWRITEV2)
+	struct iovec;
+	extern ssize_t pwritev2(int fd, const struct iovec *iov, int iovcnt, off_t offset, int flags);
+#endif
+
+	extern int fsync(int fd);
+	extern int sync_file_range(int fd, int64_t offset, int64_t nbytes, unsigned int flags);
+
+	struct msghdr;
+	struct sockaddr;
+	extern ssize_t sendmsg(int sockfd, const struct msghdr *msg, int flags);
+	extern ssize_t recvmsg(int sockfd, struct msghdr *msg, int flags);
+	extern ssize_t send(int sockfd, const void *buf, size_t len, int flags);
+	extern ssize_t recv(int sockfd, void *buf, size_t len, int flags);
+	extern int accept4(int sockfd, struct sockaddr *addr, socklen_t *addrlen, int flags);
+	extern int connect(int sockfd, const struct sockaddr *addr, socklen_t addrlen);
+
+	extern int fallocate(int fd, int mode, uint64_t offset, uint64_t len);
+	extern int posix_fadvise(int fd, uint64_t offset, uint64_t len, int advice);
+	extern int madvise(void *addr, size_t length, int advice);
+
+	extern int openat(int dirfd, const char *pathname, int flags, mode_t mode);
+	extern int close(int fd);
+
+	extern ssize_t read (int fd, void *buf, size_t count);
+}
+
+//=============================================================================================
+// I/O Interface
+//=============================================================================================
+
+//-----------------------------------------------------------------------------
+// Asynchronous operations
+#if defined(HAVE_PREADV2)
+	ssize_t cfa_preadv2(int fd, const struct iovec *iov, int iovcnt, off_t offset, int flags) {
+		#if !defined(HAVE_LINUX_IO_URING_H) || !defined(IORING_OP_READV)
+			return preadv2(fd, iov, iovcnt, offset, flags);
 		#else
 			__submit_prelude
 
-			(*sqe){ IORING_OP_FSYNC, fd };
+			(*sqe){ IORING_OP_READV, fd, iov, iovcnt, offset };
 
 			__submit_wait
 		#endif
 	}
-
-	int cfa_sync_file_range(int fd, int64_t offset, int64_t nbytes, unsigned int flags) {
-		#if !defined(HAVE_LINUX_IO_URING_H) || !defined(IORING_OP_SYNC_FILE_RANGE)
-			return sync_file_range(fd, offset, nbytes, flags);
+#endif
+
+#if defined(HAVE_PWRITEV2)
+	ssize_t cfa_pwritev2(int fd, const struct iovec *iov, int iovcnt, off_t offset, int flags) {
+		#if !defined(HAVE_LINUX_IO_URING_H) || !defined(IORING_OP_WRITEV)
+			return pwritev2(fd, iov, iovcnt, offset, flags);
 		#else
 			__submit_prelude
 
-			(*sqe){ IORING_OP_SYNC_FILE_RANGE, fd };
-			sqe->off = offset;
-			sqe->len = nbytes;
-			sqe->sync_range_flags = flags;
+			(*sqe){ IORING_OP_WRITEV, fd, iov, iovcnt, offset };
 
 			__submit_wait
 		#endif
 	}
-
-
-	ssize_t cfa_sendmsg(int sockfd, const struct msghdr *msg, int flags) {
-		#if !defined(HAVE_LINUX_IO_URING_H) || !defined(IORING_OP_SENDMSG)
-			return sendmsg(sockfd, msg, flags);
-		#else
-			__submit_prelude
-
-			(*sqe){ IORING_OP_SENDMSG, sockfd, msg, 1, 0 };
-			sqe->msg_flags = flags;
-
-			__submit_wait
+#endif
+
+int cfa_fsync(int fd) {
+	#if !defined(HAVE_LINUX_IO_URING_H) || !defined(IORING_OP_FSYNC)
+		return fsync(fd);
+	#else
+		__submit_prelude
+
+		(*sqe){ IORING_OP_FSYNC, fd };
+
+		__submit_wait
+	#endif
+}
+
+int cfa_sync_file_range(int fd, int64_t offset, int64_t nbytes, unsigned int flags) {
+	#if !defined(HAVE_LINUX_IO_URING_H) || !defined(IORING_OP_SYNC_FILE_RANGE)
+		return sync_file_range(fd, offset, nbytes, flags);
+	#else
+		__submit_prelude
+
+		(*sqe){ IORING_OP_SYNC_FILE_RANGE, fd };
+		sqe->off = offset;
+		sqe->len = nbytes;
+		sqe->sync_range_flags = flags;
+
+		__submit_wait
+	#endif
+}
+
+
+ssize_t cfa_sendmsg(int sockfd, const struct msghdr *msg, int flags) {
+	#if !defined(HAVE_LINUX_IO_URING_H) || !defined(IORING_OP_SENDMSG)
+		return sendmsg(sockfd, msg, flags);
+	#else
+		__submit_prelude
+
+		(*sqe){ IORING_OP_SENDMSG, sockfd, msg, 1, 0 };
+		sqe->msg_flags = flags;
+
+		__submit_wait
+	#endif
+}
+
+ssize_t cfa_recvmsg(int sockfd, struct msghdr *msg, int flags) {
+	#if !defined(HAVE_LINUX_IO_URING_H) || !defined(IORING_OP_RECVMSG)
+		return recvmsg(sockfd, msg, flags);
+	#else
+		__submit_prelude
+
+		(*sqe){ IORING_OP_RECVMSG, sockfd, msg, 1, 0 };
+		sqe->msg_flags = flags;
+
+		__submit_wait
+	#endif
+}
+
+ssize_t cfa_send(int sockfd, const void *buf, size_t len, int flags) {
+	#if !defined(HAVE_LINUX_IO_URING_H) || !defined(IORING_OP_SEND)
+		return send( sockfd, buf, len, flags );
+	#else
+		__submit_prelude
+
+		(*sqe){ IORING_OP_SEND, sockfd };
+		sqe->addr = (uint64_t)buf;
+		sqe->len = len;
+		sqe->msg_flags = flags;
+
+		__submit_wait
+	#endif
+}
+
+ssize_t cfa_recv(int sockfd, void *buf, size_t len, int flags) {
+	#if !defined(HAVE_LINUX_IO_URING_H) || !defined(IORING_OP_RECV)
+		return recv( sockfd, buf, len, flags );
+	#else
+		__submit_prelude
+
+		(*sqe){ IORING_OP_RECV, sockfd };
+		sqe->addr = (uint64_t)buf;
+		sqe->len = len;
+		sqe->msg_flags = flags;
+
+		__submit_wait
+	#endif
+}
+
+int cfa_accept4(int sockfd, struct sockaddr *addr, socklen_t *addrlen, int flags) {
+	#if !defined(HAVE_LINUX_IO_URING_H) || !defined(IORING_OP_ACCEPT)
+		return accept4( sockfd, addr, addrlen, flags );
+	#else
+		__submit_prelude
+
+		(*sqe){ IORING_OP_ACCEPT, sockfd };
+		sqe->addr = addr;
+		sqe->addr2 = addrlen;
+		sqe->accept_flags = flags;
+
+		__submit_wait
+	#endif
+}
+
+int cfa_connect(int sockfd, const struct sockaddr *addr, socklen_t addrlen) {
+	#if !defined(HAVE_LINUX_IO_URING_H) || !defined(IORING_OP_CONNECT)
+		return connect( sockfd, addr, addrlen );
+	#else
+		__submit_prelude
+
+		(*sqe){ IORING_OP_CONNECT, sockfd };
+		sqe->addr = (uint64_t)addr;
+		sqe->off = addrlen;
+
+		__submit_wait
+	#endif
+}
+
+int cfa_fallocate(int fd, int mode, uint64_t offset, uint64_t len) {
+	#if !defined(HAVE_LINUX_IO_URING_H) || !defined(IORING_OP_FALLOCATE)
+		return fallocate( fd, mode, offset, len );
+	#else
+		__submit_prelude
+
+		(*sqe){ IORING_OP_FALLOCATE, fd };
+		sqe->off = offset;
+		sqe->len = length;
+		sqe->mode = mode;
+
+		__submit_wait
+	#endif
+}
+
+int cfa_fadvise(int fd, uint64_t offset, uint64_t len, int advice) {
+	#if !defined(HAVE_LINUX_IO_URING_H) || !defined(IORING_OP_FADVISE)
+		return posix_fadvise( fd, offset, len, advice );
+	#else
+		__submit_prelude
+
+		(*sqe){ IORING_OP_FADVISE, fd };
+		sqe->off = (uint64_t)offset;
+		sqe->len = length;
+		sqe->fadvise_advice = advice;
+
+		__submit_wait
+	#endif
+}
+
+int cfa_madvise(void *addr, size_t length, int advice) {
+	#if !defined(HAVE_LINUX_IO_URING_H) || !defined(IORING_OP_MADVISE)
+		return madvise( addr, length, advice );
+	#else
+		__submit_prelude
+
+		(*sqe){ IORING_OP_MADVISE, 0 };
+		sqe->addr = (uint64_t)addr;
+		sqe->len = length;
+		sqe->fadvise_advice = advice;
+
+		__submit_wait
+	#endif
+}
+
+int cfa_openat(int dirfd, const char *pathname, int flags, mode_t mode) {
+	#if !defined(HAVE_LINUX_IO_URING_H) || !defined(IORING_OP_OPENAT)
+		return openat( dirfd, pathname, flags, mode );
+	#else
+		__submit_prelude
+
+		(*sqe){ IORING_OP_OPENAT, dirfd };
+		sqe->addr = (uint64_t)pathname;
+		sqe->open_flags = flags;
+		sqe->mode = mode;
+
+		__submit_wait
+	#endif
+}
+
+int cfa_close(int fd) {
+	#if !defined(HAVE_LINUX_IO_URING_H) || !defined(IORING_OP_CLOSE)
+		return close( fd );
+	#else
+		__submit_prelude
+
+		(*sqe){ IORING_OP_CLOSE, fd };
+
+		__submit_wait
+	#endif
+}
+
+
+ssize_t cfa_read(int fd, void *buf, size_t count) {
+	#if !defined(HAVE_LINUX_IO_URING_H) || !defined(IORING_OP_READ)
+		return read( fd, buf, count );
+	#else
+		__submit_prelude
+
+		(*sqe){ IORING_OP_READ, fd, buf, count, 0 };
+
+		__submit_wait
+	#endif
+}
+
+ssize_t cfa_write(int fd, void *buf, size_t count) {
+	#if !defined(HAVE_LINUX_IO_URING_H) || !defined(IORING_OP_WRITE)
+		return read( fd, buf, count );
+	#else
+		__submit_prelude
+
+		(*sqe){ IORING_OP_WRITE, fd, buf, count, 0 };
+
+		__submit_wait
+	#endif
+}
+
+//-----------------------------------------------------------------------------
+// Check if a function is asynchronous
+
+// Macro magic to reduce the size of the following switch case
+#define IS_DEFINED_APPLY(f, ...) f(__VA_ARGS__)
+#define IS_DEFINED_SECOND(first, second, ...) second
+#define IS_DEFINED_TEST(expansion) _CFA_IO_FEATURE_##expansion
+#define IS_DEFINED(macro) IS_DEFINED_APPLY( IS_DEFINED_SECOND,IS_DEFINED_TEST(macro) false, true)
+
+bool has_user_level_blocking( fptr_t func ) {
+	#if defined(HAVE_LINUX_IO_URING_H)
+		#if defined(HAVE_PREADV2)
+			if( /*func == (fptr_t)preadv2 || */
+				func == (fptr_t)cfa_preadv2 )
+				#define _CFA_IO_FEATURE_IORING_OP_READV ,
+				return IS_DEFINED(IORING_OP_READV);
 		#endif
-	}
-
-	ssize_t cfa_recvmsg(int sockfd, struct msghdr *msg, int flags) {
-		#if !defined(HAVE_LINUX_IO_URING_H) || !defined(IORING_OP_RECVMSG)
-			return recvmsg(sockfd, msg, flags);
-		#else
-			__submit_prelude
-
-			(*sqe){ IORING_OP_RECVMSG, sockfd, msg, 1, 0 };
-			sqe->msg_flags = flags;
-
-			__submit_wait
+
+		#if defined(HAVE_PWRITEV2)
+			if( /*func == (fptr_t)pwritev2 || */
+				func == (fptr_t)cfa_pwritev2 )
+				#define _CFA_IO_FEATURE_IORING_OP_WRITEV ,
+				return IS_DEFINED(IORING_OP_WRITEV);
 		#endif
-	}
-
-	ssize_t cfa_send(int sockfd, const void *buf, size_t len, int flags) {
-		#if !defined(HAVE_LINUX_IO_URING_H) || !defined(IORING_OP_SEND)
-			return send( sockfd, buf, len, flags );
-		#else
-			__submit_prelude
-
-			(*sqe){ IORING_OP_SEND, sockfd };
-			sqe->addr = (uint64_t)buf;
-			sqe->len = len;
-			sqe->msg_flags = flags;
-
-			__submit_wait
-		#endif
-	}
-
-	ssize_t cfa_recv(int sockfd, void *buf, size_t len, int flags) {
-		#if !defined(HAVE_LINUX_IO_URING_H) || !defined(IORING_OP_RECV)
-			return recv( sockfd, buf, len, flags );
-		#else
-			__submit_prelude
-
-			(*sqe){ IORING_OP_RECV, sockfd };
-			sqe->addr = (uint64_t)buf;
-			sqe->len = len;
-			sqe->msg_flags = flags;
-
-			__submit_wait
-		#endif
-	}
-
-	int cfa_accept4(int sockfd, struct sockaddr *addr, socklen_t *addrlen, int flags) {
-		#if !defined(HAVE_LINUX_IO_URING_H) || !defined(IORING_OP_ACCEPT)
-			return accept4( sockfd, addr, addrlen, flags );
-		#else
-			__submit_prelude
-
-			(*sqe){ IORING_OP_ACCEPT, sockfd };
-			sqe->addr = addr;
-			sqe->addr2 = addrlen;
-			sqe->accept_flags = flags;
-
-			__submit_wait
-		#endif
-	}
-
-	int cfa_connect(int sockfd, const struct sockaddr *addr, socklen_t addrlen) {
-		#if !defined(HAVE_LINUX_IO_URING_H) || !defined(IORING_OP_CONNECT)
-			return connect( sockfd, addr, addrlen );
-		#else
-			__submit_prelude
-
-			(*sqe){ IORING_OP_CONNECT, sockfd };
-			sqe->addr = (uint64_t)addr;
-			sqe->off = addrlen;
-
-			__submit_wait
-		#endif
-	}
-
-	int cfa_fallocate(int fd, int mode, uint64_t offset, uint64_t len) {
-		#if !defined(HAVE_LINUX_IO_URING_H) || !defined(IORING_OP_FALLOCATE)
-			return fallocate( fd, mode, offset, len );
-		#else
-			__submit_prelude
-
-			(*sqe){ IORING_OP_FALLOCATE, fd };
-			sqe->off = offset;
-			sqe->len = length;
-			sqe->mode = mode;
-
-			__submit_wait
-		#endif
-	}
-
-	int cfa_fadvise(int fd, uint64_t offset, uint64_t len, int advice) {
-		#if !defined(HAVE_LINUX_IO_URING_H) || !defined(IORING_OP_FADVISE)
-			return posix_fadvise( fd, offset, len, advice );
-		#else
-			__submit_prelude
-
-			(*sqe){ IORING_OP_FADVISE, fd };
-			sqe->off = (uint64_t)offset;
-			sqe->len = length;
-			sqe->fadvise_advice = advice;
-
-			__submit_wait
-		#endif
-	}
-
-	int cfa_madvise(void *addr, size_t length, int advice) {
-		#if !defined(HAVE_LINUX_IO_URING_H) || !defined(IORING_OP_MADVISE)
-			return madvise( addr, length, advice );
-		#else
-			__submit_prelude
-
-			(*sqe){ IORING_OP_MADVISE, 0 };
-			sqe->addr = (uint64_t)addr;
-			sqe->len = length;
-			sqe->fadvise_advice = advice;
-
-			__submit_wait
-		#endif
-	}
-
-	int cfa_openat(int dirfd, const char *pathname, int flags, mode_t mode) {
-		#if !defined(HAVE_LINUX_IO_URING_H) || !defined(IORING_OP_OPENAT)
-			return openat( dirfd, pathname, flags, mode );
-		#else
-			__submit_prelude
-
-			(*sqe){ IORING_OP_OPENAT, dirfd };
-			sqe->addr = (uint64_t)pathname;
-			sqe->open_flags = flags;
-			sqe->mode = mode;
-
-			__submit_wait
-		#endif
-	}
-
-	int cfa_close(int fd) {
-		#if !defined(HAVE_LINUX_IO_URING_H) || !defined(IORING_OP_CLOSE)
-			return close( fd );
-		#else
-			__submit_prelude
-
-			(*sqe){ IORING_OP_CLOSE, fd };
-
-			__submit_wait
-		#endif
-	}
-
-
-	ssize_t cfa_read(int fd, void *buf, size_t count) {
-		#if !defined(HAVE_LINUX_IO_URING_H) || !defined(IORING_OP_READ)
-			return read( fd, buf, count );
-		#else
-			__submit_prelude
-
-			(*sqe){ IORING_OP_READ, fd, buf, count, 0 };
-
-			__submit_wait
-		#endif
-	}
-
-	ssize_t cfa_write(int fd, void *buf, size_t count) {
-		#if !defined(HAVE_LINUX_IO_URING_H) || !defined(IORING_OP_WRITE)
-			return read( fd, buf, count );
-		#else
-			__submit_prelude
-
-			(*sqe){ IORING_OP_WRITE, fd, buf, count, 0 };
-
-			__submit_wait
-		#endif
-	}
-
-	//-----------------------------------------------------------------------------
-	// Check if a function is asynchronous
-
-	// Macro magic to reduce the size of the following switch case
-	#define IS_DEFINED_APPLY(f, ...) f(__VA_ARGS__)
-	#define IS_DEFINED_SECOND(first, second, ...) second
-	#define IS_DEFINED_TEST(expansion) _CFA_IO_FEATURE_##expansion
-	#define IS_DEFINED(macro) IS_DEFINED_APPLY( IS_DEFINED_SECOND,IS_DEFINED_TEST(macro) false, true)
-
-	bool has_user_level_blocking( fptr_t func ) {
-		#if defined(HAVE_LINUX_IO_URING_H)
-			#if defined(HAVE_PREADV2)
-				if( /*func == (fptr_t)preadv2 || */
-					func == (fptr_t)cfa_preadv2 )
-					#define _CFA_IO_FEATURE_IORING_OP_READV ,
-					return IS_DEFINED(IORING_OP_READV);
-			#endif
-
-			#if defined(HAVE_PWRITEV2)
-				if( /*func == (fptr_t)pwritev2 || */
-					func == (fptr_t)cfa_pwritev2 )
-					#define _CFA_IO_FEATURE_IORING_OP_WRITEV ,
-					return IS_DEFINED(IORING_OP_WRITEV);
-			#endif
-
-			if( /*func == (fptr_t)fsync || */
-				func == (fptr_t)cfa_fsync )
-				#define _CFA_IO_FEATURE_IORING_OP_FSYNC ,
-				return IS_DEFINED(IORING_OP_FSYNC);
-
-			if( /*func == (fptr_t)ync_file_range || */
-				func == (fptr_t)cfa_sync_file_range )
-				#define _CFA_IO_FEATURE_IORING_OP_SYNC_FILE_RANGE ,
-				return IS_DEFINED(IORING_OP_SYNC_FILE_RANGE);
-
-			if( /*func == (fptr_t)sendmsg || */
-				func == (fptr_t)cfa_sendmsg )
-				#define _CFA_IO_FEATURE_IORING_OP_SENDMSG ,
-				return IS_DEFINED(IORING_OP_SENDMSG);
-
-			if( /*func == (fptr_t)recvmsg || */
-				func == (fptr_t)cfa_recvmsg )
-				#define _CFA_IO_FEATURE_IORING_OP_RECVMSG ,
-				return IS_DEFINED(IORING_OP_RECVMSG);
-
-			if( /*func == (fptr_t)send || */
-				func == (fptr_t)cfa_send )
-				#define _CFA_IO_FEATURE_IORING_OP_SEND ,
-				return IS_DEFINED(IORING_OP_SEND);
-
-			if( /*func == (fptr_t)recv || */
-				func == (fptr_t)cfa_recv )
-				#define _CFA_IO_FEATURE_IORING_OP_RECV ,
-				return IS_DEFINED(IORING_OP_RECV);
-
-			if( /*func == (fptr_t)accept4 || */
-				func == (fptr_t)cfa_accept4 )
-				#define _CFA_IO_FEATURE_IORING_OP_ACCEPT ,
-				return IS_DEFINED(IORING_OP_ACCEPT);
-
-			if( /*func == (fptr_t)connect || */
-				func == (fptr_t)cfa_connect )
-				#define _CFA_IO_FEATURE_IORING_OP_CONNECT ,
-				return IS_DEFINED(IORING_OP_CONNECT);
-
-			if( /*func == (fptr_t)fallocate || */
-				func == (fptr_t)cfa_fallocate )
-				#define _CFA_IO_FEATURE_IORING_OP_FALLOCATE ,
-				return IS_DEFINED(IORING_OP_FALLOCATE);
-
-			if( /*func == (fptr_t)posix_fadvise || */
-				func == (fptr_t)cfa_fadvise )
-				#define _CFA_IO_FEATURE_IORING_OP_FADVISE ,
-				return IS_DEFINED(IORING_OP_FADVISE);
-
-			if( /*func == (fptr_t)madvise || */
-				func == (fptr_t)cfa_madvise )
-				#define _CFA_IO_FEATURE_IORING_OP_MADVISE ,
-				return IS_DEFINED(IORING_OP_MADVISE);
-
-			if( /*func == (fptr_t)openat || */
-				func == (fptr_t)cfa_openat )
-				#define _CFA_IO_FEATURE_IORING_OP_OPENAT ,
-				return IS_DEFINED(IORING_OP_OPENAT);
-
-			if( /*func == (fptr_t)close || */
-				func == (fptr_t)cfa_close )
-				#define _CFA_IO_FEATURE_IORING_OP_CLOSE ,
-				return IS_DEFINED(IORING_OP_CLOSE);
-
-			if( /*func == (fptr_t)read || */
-				func == (fptr_t)cfa_read )
-				#define _CFA_IO_FEATURE_IORING_OP_READ ,
-				return IS_DEFINED(IORING_OP_READ);
-
-			if( /*func == (fptr_t)write || */
-				func == (fptr_t)cfa_write )
-				#define _CFA_IO_FEATURE_IORING_OP_WRITE ,
-				return IS_DEFINED(IORING_OP_WRITE);
-		#endif
-
-		return false;
-	}
-#endif
+
+		if( /*func == (fptr_t)fsync || */
+			func == (fptr_t)cfa_fsync )
+			#define _CFA_IO_FEATURE_IORING_OP_FSYNC ,
+			return IS_DEFINED(IORING_OP_FSYNC);
+
+		if( /*func == (fptr_t)ync_file_range || */
+			func == (fptr_t)cfa_sync_file_range )
+			#define _CFA_IO_FEATURE_IORING_OP_SYNC_FILE_RANGE ,
+			return IS_DEFINED(IORING_OP_SYNC_FILE_RANGE);
+
+		if( /*func == (fptr_t)sendmsg || */
+			func == (fptr_t)cfa_sendmsg )
+			#define _CFA_IO_FEATURE_IORING_OP_SENDMSG ,
+			return IS_DEFINED(IORING_OP_SENDMSG);
+
+		if( /*func == (fptr_t)recvmsg || */
+			func == (fptr_t)cfa_recvmsg )
+			#define _CFA_IO_FEATURE_IORING_OP_RECVMSG ,
+			return IS_DEFINED(IORING_OP_RECVMSG);
+
+		if( /*func == (fptr_t)send || */
+			func == (fptr_t)cfa_send )
+			#define _CFA_IO_FEATURE_IORING_OP_SEND ,
+			return IS_DEFINED(IORING_OP_SEND);
+
+		if( /*func == (fptr_t)recv || */
+			func == (fptr_t)cfa_recv )
+			#define _CFA_IO_FEATURE_IORING_OP_RECV ,
+			return IS_DEFINED(IORING_OP_RECV);
+
+		if( /*func == (fptr_t)accept4 || */
+			func == (fptr_t)cfa_accept4 )
+			#define _CFA_IO_FEATURE_IORING_OP_ACCEPT ,
+			return IS_DEFINED(IORING_OP_ACCEPT);
+
+		if( /*func == (fptr_t)connect || */
+			func == (fptr_t)cfa_connect )
+			#define _CFA_IO_FEATURE_IORING_OP_CONNECT ,
+			return IS_DEFINED(IORING_OP_CONNECT);
+
+		if( /*func == (fptr_t)fallocate || */
+			func == (fptr_t)cfa_fallocate )
+			#define _CFA_IO_FEATURE_IORING_OP_FALLOCATE ,
+			return IS_DEFINED(IORING_OP_FALLOCATE);
+
+		if( /*func == (fptr_t)posix_fadvise || */
+			func == (fptr_t)cfa_fadvise )
+			#define _CFA_IO_FEATURE_IORING_OP_FADVISE ,
+			return IS_DEFINED(IORING_OP_FADVISE);
+
+		if( /*func == (fptr_t)madvise || */
+			func == (fptr_t)cfa_madvise )
+			#define _CFA_IO_FEATURE_IORING_OP_MADVISE ,
+			return IS_DEFINED(IORING_OP_MADVISE);
+
+		if( /*func == (fptr_t)openat || */
+			func == (fptr_t)cfa_openat )
+			#define _CFA_IO_FEATURE_IORING_OP_OPENAT ,
+			return IS_DEFINED(IORING_OP_OPENAT);
+
+		if( /*func == (fptr_t)close || */
+			func == (fptr_t)cfa_close )
+			#define _CFA_IO_FEATURE_IORING_OP_CLOSE ,
+			return IS_DEFINED(IORING_OP_CLOSE);
+
+		if( /*func == (fptr_t)read || */
+			func == (fptr_t)cfa_read )
+			#define _CFA_IO_FEATURE_IORING_OP_READ ,
+			return IS_DEFINED(IORING_OP_READ);
+
+		if( /*func == (fptr_t)write || */
+			func == (fptr_t)cfa_write )
+			#define _CFA_IO_FEATURE_IORING_OP_WRITE ,
+			return IS_DEFINED(IORING_OP_WRITE);
+	#endif
+
+	return false;
+}