[PATCH] Add O_NONBLOCK support to FUSE

[Jeff Dike <jdike@addtoit.com>]

This adds O_NONBLOCK support to FUSE.
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 <jdike@addtoit.com>

Index: host-2.6.15-fuse/fs/fuse/dev.c
===================================================================
--- host-2.6.15-fuse.orig/fs/fuse/dev.c	2006-02-28 21:00:00.000000000 -0500
+++ host-2.6.15-fuse/fs/fuse/dev.c	2006-02-28 21:04:36.000000000 -0500
@@ -613,6 +613,12 @@ static ssize_t fuse_dev_readv(struct fil
 	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)
-
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