From e5ac1d1e70a8c19a65a959d73650203df7a2e168 Mon Sep 17 00:00:00 2001 From: Jeff Dike Date: Mon, 10 Apr 2006 22:54:53 -0700 Subject: [PATCH] [PATCH] fuse: add O_NONBLOCK support to FUSE device I don't like duplicating the connected and list_empty tests in fuse_dev_readv, but this seemed cleaner than adding the f_flags test to request_wait. Signed-off-by: Jeff Dike Signed-off-by: Miklos Szeredi Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/fuse/dev.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c index 438770f8867..75c6e9166c3 100644 --- a/fs/fuse/dev.c +++ b/fs/fuse/dev.c @@ -619,6 +619,12 @@ static ssize_t fuse_dev_readv(struct file *file, const struct iovec *iov, err = -EPERM; if (!fc) goto err_unlock; + + err = -EAGAIN; + if ((file->f_flags & O_NONBLOCK) && fc->connected && + list_empty(&fc->pending)) + goto err_unlock; + request_wait(fc); err = -ENODEV; if (!fc->connected) -- 2.20.1