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From: Heiko Carstens <heiko.carstens@de.ibm.com>
To: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>,
	Bastian Blank <bastian@waldi.eu.org>,
	Andrew Morton <akpm@linux-foundation.org>,
	linux-s390@vger.kernel.org,
	Linux Kernel Development <linux-kernel@vger.kernel.org>,
	Linux/PPC Development <linuxppc-dev@ozlabs.org>,
	linux-ext4@vger.kernel.org
Subject: Re: [PATCH] Fix ext4 bitops
Date: Mon, 4 Feb 2008 10:24:36 +0100	[thread overview]
Message-ID: <20080204092436.GB7530@osiris.boeblingen.de.ibm.com> (raw)
In-Reply-To: <20080204045025.GA7494@skywalker>

> > > > | 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.
> > > 
> > > That doesn't work:
> > > 
> > > fs/built-in.o: In function `ext4_mb_release_inode_pa':
> > > mballoc.c:(.text+0x95a8a): undefined reference to `generic_find_next_le_bit'
> > > fs/built-in.o: In function `ext4_mb_init_cache':
> > > mballoc.c:(.text+0x967ea): undefined reference to `generic_find_next_le_bit'
> > > 
> > > This still needs generic_find_next_le_bit which comes
> > > from lib/find_next_bit.c. That one doesn't get built on s390 since we
> > > don't set GENERIC_FIND_NEXT_BIT.
> > > Currently we have the lengthly patch below queued.
> > 
> > Similar issue on m68k. As Bastian also saw it on powerpc, I'm getting the
> > impression the ext4 people don't (compile) test on big endian machines?
> > 
> > Gr{oetje,eeting}s,
> > 
> 
> I have sent this patches to linux-arch expecting a review from
> different arch people. It is true that the patches are tested only on
> powerpc, x86-64, x86. That's the primary reason of me sending the
> patches to linux-arch.

Is there anything special I need to do so the ext4 code actually uses
ext2_find_next_bit() ? Haven't looked at the ext4 code, but I'd like to
test if the s390 implementation is ok.

  reply	other threads:[~2008-02-04  9:24 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-02-01 20:02 Bastian Blank
2008-02-01 20:22 ` Andrew Morton
2008-02-01 21:04   ` Bastian Blank
2008-02-03 12:12     ` Heiko Carstens
2008-02-03 12:39       ` Geert Uytterhoeven
2008-02-04  4:50         ` Aneesh Kumar K.V
2008-02-04  9:24           ` Heiko Carstens [this message]
2008-02-04  9:29             ` Aneesh Kumar K.V
2008-02-04 20:11           ` Geert Uytterhoeven
2008-02-01 20:02 Bastian Blank
2008-02-03  7:36 ` Benjamin Herrenschmidt
2008-02-04  5:22 ` Aneesh Kumar K.V

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