[robust-futex-3] futex: robust futex support

[david singleton <dsingleton@mvista.com>]

On Jan 14, 2006, at 9:18 PM, Ulrich Drepper wrote:

> On 1/14/06, david singleton <dsingleton@mvista.com> wrote:
> > can you suggest some error codes you like to use?  I'll use
> > whatever you suggest.
>
> How about EADDRNOTAVAIL.  The error message kind of makes sense, even
> though "address" is misused.  And there definitely won't be a clash
> with other error codes because it's currently only used in network
> contexts.

Ulrich,
	I've fixed another memory leak in free_robust_list.   The entries in 
the slab caches
now look correct through the full test suite up to 7500 threads.   Does 
your glibc
work correctly with this patch?


diff -u linux-2.6.15/kernel/futex.c linux-2.6.15/kernel/futex.c
--- linux-2.6.15/kernel/futex.c
+++ linux-2.6.15/kernel/futex.c
@@ -917,6 +917,8 @@
        up(&mapping->robust_head->robust_sem);

        kmem_cache_free(file_futex_cachep, futex_head);
+       mapping->robust_head = NULL;
+
        return;
 }


The new full patch is attached, and at

http://source.mvista.com/~dsingleton/robust–futex-3

David

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