linux-kernel - Re: [PATCH] Fix ext4 bitops

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Date:	Fri, 1 Feb 2008 22:04:04 +0100
From:	Bastian Blank <bastian@...di.eu.org>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	linux-s390@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Fix ext4 bitops

On Fri, Feb 01, 2008 at 12:22:57PM -0800, Andrew Morton wrote:
> On Fri, 1 Feb 2008 21:02:08 +0100
> Bastian Blank <bastian@...di.eu.org> wrote:
> 
> > Fix ext4 bitops.
> 
> This is incomplete.  Please tell us what was "fixed".
> 
> If it was a build error then please quote the compile error output in the
> changelog, as well as the usual description of what the problem is, and how
> it was fixed.

| fs/ext4/mballoc.c: In function 'ext4_mb_generate_buddy':
| fs/ext4/mballoc.c:954: error: implicit declaration of function 'generic_find_next_le_bit'

The s390 specific bitops uses parts of the generic implementation.
Include the correct header.

> > diff --git a/include/asm-s390/bitops.h b/include/asm-s390/bitops.h
> > index dba6fec..47844fc 100644
> > --- a/include/asm-s390/bitops.h
> > +++ b/include/asm-s390/bitops.h
> > @@ -762,6 +762,8 @@ static inline int sched_find_first_bit(unsigned long *b)
> >   *    23 22 21 20 19 18 17 16 31 30 29 28 27 26 25 24
> >   */
> >  
> > +#include <asm-generic/bitops/le.h>
> > +
> >  #define ext2_set_bit(nr, addr)       \
> >  	__test_and_set_bit((nr)^(__BITOPS_WORDSIZE - 8), (unsigned long *)addr)
> >  #define ext2_set_bit_atomic(lock, nr, addr)       \
> 
> 
> -
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