Linus Torvalds wrote on Mon, Apr 06, 2020: > I think the O_NONBLOCK difference is one of the more benign ones. > > I just think it should be documented more. Hadn't explicitely added you in Ccs, but I did post something to document it: http://lkml.kernel.org/r/1586193572-1375-1-git-send-email-asmadeus@xxxxxxxxxxxxx (small enough to just quote:) -------------- diff --git a/Documentation/filesystems/9p.txt b/Documentation/filesystems/9p.txt index fec7144e817c..3fb780ffdf23 100644 --- a/Documentation/filesystems/9p.txt +++ b/Documentation/filesystems/9p.txt @@ -133,6 +133,16 @@ OPTIONS cache tags for existing cache sessions can be listed at /sys/fs/9p/caches. (applies only to cache=fscache) +BEHAVIOR +======== + +This section aims at describing 9p 'quirks' that can be different +from a local filesystem behaviors. + + - Setting O_NONBLOCK on a file will make client reads return as early + as the server returns some data instead of trying to fill the read + buffer with the requested amount of bytes or end of file is reached. + RESOURCES ========= -------------- Will submit the pull request again with that in a couple of days unless anything bad happens. Thanks, -- Dominique
