linux-kernel - code read question

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Message-ID: <76391b770708200824x22bea9e5me0b721257ff903d8@mail.gmail.com>
Date:	Mon, 20 Aug 2007 23:24:38 +0800
From:	"liang yuanen" <linux.kernel.liang@...il.com>
To:	kernelnewbies@...linux.org, linux-kernel@...r.kernel.org
Subject: code read question

in 2.4.20 code, in comment say this clear BSS, i think this not only
clear the BSS and set other data ,them are not belong to BSS, such as
.data.init_task to zero

in file arch/i386/boot/compressed/head.S
/*
 * Clear BSS		
 */
	xorl %eax,%eax
	movl $ SYMBOL_NAME(_edata),%edi
	movl $ SYMBOL_NAME(_end),%ecx
	subl %edi,%ecx
	cld
	rep
	stosb

in file \arch\i386\vmlinux.lds

_edata = .;			/* End of data section */

  . = ALIGN(8192);		/* init_task */
  .data.init_task : { *(.data.init_task) }

  . = ALIGN(4096);		/* Init code and data */
  __init_begin = .;
  .text.init : { *(.text.init) }
  .data.init : { *(.data.init) }
  . = ALIGN(16);
  __setup_start = .;
  .setup.init : { *(.setup.init) }
  __setup_end = .;
  __initcall_start = .;
  .initcall.init : { *(.initcall.init) }
  __initcall_end = .;
  . = ALIGN(4096);
  __init_end = .;

  . = ALIGN(4096);
  .data.page_aligned : { *(.data.idt) }

  . = ALIGN(32);
  .data.cacheline_aligned : { *(.data.cacheline_aligned) }

  __bss_start = .;		/* BSS */
  .bss : {
	*(.bss)
	}
  _end = . ;


is it right?
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