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Commit 6c189d83 authored by Xiao Guangrong's avatar Xiao Guangrong Committed by Rusty Russell
Browse files

lguest: cleanup for map_switcher() 



We can use alloc_page() instead of get_zeroed_page() and virt_to_page()

Signed-off-by: default avatarXiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: default avatarRusty Russell <rusty@rustcorp.com.au>
parent fb100d78

drivers/lguest/core.c

+2 −3
Original line number Diff line number Diff line
@@ -67,12 +67,11 @@ static __init int map_switcher(void) 
	 * so we make sure they're zeroed.

	 */

	for (i = 0; i < TOTAL_SWITCHER_PAGES; i++) {

		unsigned long addr = get_zeroed_page(GFP_KERNEL);

		if (!addr) {

		switcher_page[i] = alloc_page(GFP_KERNEL|__GFP_ZERO);

		if (!switcher_page[i]) {

			err = -ENOMEM;

			goto free_some_pages;

		}

		switcher_page[i] = virt_to_page(addr);

	}



	/*