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Subject[PATCH][DOCO] Re: 2.6.0-test3 and dnotify
Linus,

On 12 Aug 2003 10:28:47 -0600 Ronald Kuetemeier <ron_ker@kuetemeier.com> wrote:
>
> I run some of my programs on 2.6.0-test3 this morning, before my coffee
> ..., anyhow seems dnotify isn't working any more. I compiled the example
> from <linux-2.6.0-test3>/Documentation/dnotify.txt this also doesn't
> work anymore.

This has been asked a couple of times, so can you please apply the
following documentation patch?
--
Cheers,
Stephen Rothwell sfr@canb.auug.org.au
http://www.canb.auug.org.au/~sfr/

diff -ruN 2.6.0-test3/Documentation/dnotify.txt 2.6.0-test3.sfr.1/Documentation/dnotify.txt
--- 2.6.0-test3/Documentation/dnotify.txt 2001-04-07 03:42:48.000000000 +1000
+++ 2.6.0-test3.sfr.1/Documentation/dnotify.txt 2003-08-13 14:32:14.000000000 +1000
@@ -32,7 +32,8 @@

Preferably the application will choose one of the real time signals
(SIGRTMIN + <n>) so that the notifications may be queued. This is
-especially important if DN_MULTISHOT is specified.
+especially important if DN_MULTISHOT is specified. Note that SIGRTMIN
+is often blocked, so it is better to use (at least) SIGRTMIN + 1.

Implementation expectations (features and bugs :-))
---------------------------
@@ -78,10 +79,10 @@
act.sa_sigaction = handler;
sigemptyset(&act.sa_mask);
act.sa_flags = SA_SIGINFO;
- sigaction(SIGRTMIN, &act, NULL);
+ sigaction(SIGRTMIN + 1, &act, NULL);

fd = open(".", O_RDONLY);
- fcntl(fd, F_SETSIG, SIGRTMIN);
+ fcntl(fd, F_SETSIG, SIGRTMIN + 1);
fcntl(fd, F_NOTIFY, DN_MODIFY|DN_CREATE|DN_MULTISHOT);
/* we will now be notified if any of the files
in "." is modified or new files are created */
-
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