lkml.org 
[lkml]   [2001]   [Feb]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: 2.4.2-pre3 compile error in 6pack.c
Alan Cox wrote:
>
> > > Would it be costly/reasonable to have kmalloc -not- panic if given a
> > > too-large size? Principle of Least Surprises says it should return NULL
> > > at the very least.
> >
> > It's on purpose; to find the erroneous drivers.
>
> Unfortunately Linus forgot to provide a way to check if a kmalloc is too
> large so the drivers cannot work around it. Dave put an incredibly ugly
> constant assumption in af_unix for this and no doubt more will follow.
>
> So -ac added the constant
>
What about removing the BUG?

I means all drivers should be aware that kmalloc() > 16 kB fail quite
often.
kmalloc() over 128 kB always fail.

Do you really prefer if drivers contain a

static inline void* safe_kmalloc(size, flags)
{
if(size > LIMIT)
return NULL;
return kmalloc(size, flags);
}

--
Manfred
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:13    [W:0.063 / U:0.228 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site