fuse: Switch to using async direct IO for FOPEN_DIRECT_IO (23c94e1c) · Commits · 戴 / test

fs/fuse/file.c

+26 −4

Original line number	Diff line number	Diff line
		@@ -1436,10 +1436,26 @@ static ssize_t __fuse_direct_read(struct fuse_io_priv *io,
		return res;
		}

		static ssize_t fuse_direct_IO(struct kiocb iocb, struct iov_iter iter);

		static ssize_t fuse_direct_read_iter(struct kiocb iocb, struct iov_iter to)
		{
		ssize_t res;

		if (!is_sync_kiocb(iocb) && iocb->ki_flags & IOCB_DIRECT) {
		struct file *file = iocb->ki_filp;

		if (is_bad_inode(file_inode(file)))
		return -EIO;

		res = fuse_direct_IO(iocb, to);
		} else {
		struct fuse_io_priv io = FUSE_IO_PRIV_SYNC(iocb);
		return __fuse_direct_read(&io, to, &iocb->ki_pos);

		res = __fuse_direct_read(&io, to, &iocb->ki_pos);
		}

		return res;
		}

		static ssize_t fuse_direct_write_iter(struct kiocb iocb, struct iov_iter from)
		@@ -1454,8 +1470,14 @@ static ssize_t fuse_direct_write_iter(struct kiocb iocb, struct iov_iter from)
		/* Don't allow parallel writes to the same file */
		inode_lock(inode);
		res = generic_write_checks(iocb, from);
		if (res > 0)
		res = fuse_direct_io(&io, from, &iocb->ki_pos, FUSE_DIO_WRITE);
		if (res > 0) {
		if (!is_sync_kiocb(iocb) && iocb->ki_flags & IOCB_DIRECT) {
		res = fuse_direct_IO(iocb, from);
		} else {
		res = fuse_direct_io(&io, from, &iocb->ki_pos,
		FUSE_DIO_WRITE);
		}
		}
		fuse_invalidate_attr(inode);
		if (res > 0)
		fuse_write_update_size(inode, iocb->ki_pos);