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Date: Mon, 26 Mar 2001 20:30:16 +0900
Message-ID: <3dc0ojhz.wl@frostrubin.open.nm.fujitsu.co.jp>
From: Tachino Nobuhiro <tachino@open.nm.fujitsu.co.jp>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: linux-kernel@vger.kernel.org
Subject: [BUG] vmalloc_area_pages() in 2.4.2-ac25
In-Reply-To: <E14hQaE-0001AK-00@the-village.bc.nu>
In-Reply-To: <E14hQaE-0001AK-00@the-village.bc.nu>
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  vmalloc_area_pages() in 2.4.2-ac25 seems to be broken. It calls
spin_lock(&init_mm.page_table_lock) twice and causes system hang.



inline int vmalloc_area_pages (unsigned long address, unsigned long size,
                               int gfp_mask, pgprot_t prot)
{
	pgd_t * dir;
	unsigned long end = address + size;
	int ret;

	dir = pgd_offset_k(address);
	flush_cache_all();
>>>>	spin_lock(&init_mm.page_table_lock);	
	do {
		pmd_t *pmd;
		
>>>>		spin_lock(&init_mm.page_table_lock);	/* pmd_alloc requires this */
		pmd = pmd_alloc(&init_mm, dir, address);
		spin_unlock(&init_mm.page_table_lock);
		ret = -ENOMEM;
-
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