PROBLEM: Kernel link problem (block.o)

PROBLEM: Kernel link problem (block.o)

[Terje Dalen]

Hi, 

I have upgraded the kernel from 2.4.8 to 2.4.14 due freezing problems
with 2.4.8 (I think there must have been a deadlock with the memory/swap
handling. It only worked for 10 minutes to 6 hours). 

My link problem started when I recompiled the kernel with

CONFIG_BLK_DEV_LOOP = y

and get the following problem:

ld -m elf_i386 -T /usr/src/linux-2.4.14/arch/i386/vmlinux.lds -e stext
arch/i386/kernel/head.o arch/i386/kernel/init_task.o init/main.o
init/version.o \
        --start-group \
        arch/i386/kernel/kernel.o arch/i386/mm/mm.o kernel/kernel.o mm/mm.o
fs/fs.o ipc/ipc.o \
         drivers/char/char.o drivers/block/block.o drivers/misc/misc.o
drivers/net/net.o drivers/media/media.o drivers/char/drm/drm.o
drivers/net/fc/fc.o drivers/net/appletalk/appletalk.o
drivers/net/tokenring/tr.o drivers/net/wan/wan.o drivers/atm/atm.o
drivers/ide/idedriver.o drivers/cdrom/driver.o drivers/pci/driver.o
drivers/net/wireless/wireless_net.o drivers/pnp/pnp.o drivers/video/video.o
drivers/net/hamradio/hamradio.o drivers/md/mddev.o \
        net/network.o \
        /usr/src/linux-2.4.14/arch/i386/lib/lib.a
/usr/src/linux-2.4.14/lib/lib.a /usr/src/linux-2.4.14/arch/i386/lib/lib.a \
        --end-group \
        -o vmlinux
drivers/block/block.o: In function `lo_send':
drivers/block/block.o(.text+0xb2e9): undefined reference to
`deactivate_page'
drivers/block/block.o(.text+0xb325): undefined reference to
`deactivate_page'


I can see from in the changelog that the swap.h have been changed and the 
deactivate_page function has been removed. I guess someone forgot to update
the loop.c file. Is there a patch available for the correction of loop.c?

When I compiled the kernel as a module I was able to install and run the
kernel
and actually my system have been stable for the last 14 hours.

Best regards
Terje

Re: PROBLEM: Kernel link problem (block.o)

[Adrian Bunk]

On Tue, 20 Nov 2001, Terje Dalen wrote:

> Hi,

Hi Terje,

>...
> drivers/block/block.o: In function `lo_send':
> drivers/block/block.o(.text+0xb2e9): undefined reference to
> `deactivate_page'
> drivers/block/block.o(.text+0xb325): undefined reference to
> `deactivate_page'
>
>
> I can see from in the changelog that the swap.h have been changed and the
> deactivate_page function has been removed. I guess someone forgot to update
> the loop.c file. Is there a patch available for the correction of loop.c?
>...

This is a known bug.

The following patch fixes it:

--- linux-2.4.14-broken/drivers/block/loop.c	Thu Oct 25 13:58:34 2001
+++ linux-2.4.14/drivers/block/loop.c	Mon Nov  5 17:06:08 2001
@@ -207,7 +207,6 @@
 		index++;
 		pos += size;
 		UnlockPage(page);
-		deactivate_page(page);
 		page_cache_release(page);
 	}
 	return 0;
@@ -218,7 +217,6 @@
 	kunmap(page);
 unlock:
 	UnlockPage(page);
-	deactivate_page(page);
 	page_cache_release(page);
 fail:
 	return -1;


> Best regards
> Terje

cu
Adrian

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Re: PROBLEM: Kernel link problem (block.o)

[Morten Helgesen]

Hey, Terje!

Just remove the two references to deactivate_page. 

== Morten

On Tue, Nov 20, 2001 at 09:19:49AM +0100, Terje Dalen wrote:
> Hi, 
> 
> I have upgraded the kernel from 2.4.8 to 2.4.14 due freezing problems
> with 2.4.8 (I think there must have been a deadlock with the memory/swap
> handling. It only worked for 10 minutes to 6 hours). 
> 
> My link problem started when I recompiled the kernel with
> 
> CONFIG_BLK_DEV_LOOP = y
> 
> and get the following problem:
> 
> ld -m elf_i386 -T /usr/src/linux-2.4.14/arch/i386/vmlinux.lds -e stext
> arch/i386/kernel/head.o arch/i386/kernel/init_task.o init/main.o
> init/version.o \
>         --start-group \
>         arch/i386/kernel/kernel.o arch/i386/mm/mm.o kernel/kernel.o mm/mm.o
> fs/fs.o ipc/ipc.o \
>          drivers/char/char.o drivers/block/block.o drivers/misc/misc.o
> drivers/net/net.o drivers/media/media.o drivers/char/drm/drm.o
> drivers/net/fc/fc.o drivers/net/appletalk/appletalk.o
> drivers/net/tokenring/tr.o drivers/net/wan/wan.o drivers/atm/atm.o
> drivers/ide/idedriver.o drivers/cdrom/driver.o drivers/pci/driver.o
> drivers/net/wireless/wireless_net.o drivers/pnp/pnp.o drivers/video/video.o
> drivers/net/hamradio/hamradio.o drivers/md/mddev.o \
>         net/network.o \
>         /usr/src/linux-2.4.14/arch/i386/lib/lib.a
> /usr/src/linux-2.4.14/lib/lib.a /usr/src/linux-2.4.14/arch/i386/lib/lib.a \
>         --end-group \
>         -o vmlinux
> drivers/block/block.o: In function `lo_send':
> drivers/block/block.o(.text+0xb2e9): undefined reference to
> `deactivate_page'
> drivers/block/block.o(.text+0xb325): undefined reference to
> `deactivate_page'
> 
> 
> I can see from in the changelog that the swap.h have been changed and the 
> deactivate_page function has been removed. I guess someone forgot to update
> the loop.c file. Is there a patch available for the correction of loop.c?
> 
> When I compiled the kernel as a module I was able to install and run the
> kernel
> and actually my system have been stable for the last 14 hours.
> 
> Best regards
> Terje
> 
> 
> 
> -
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-- 
mvh
Morten Helgesen 
UNIX System Administrator & C Developer 
Nextframe AS
admin@nextframe.net / 93445641
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