Commit e89cfa58 authored by Kirill A. Shutemov's avatar Kirill A. Shutemov Committed by Linus Torvalds
Browse files

s390: handle pgtable_page_ctor() fail 



Signed-off-by: default avatarKirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 4f804943

arch/s390/mm/pgtable.c

+9 −2
Original line number Diff line number Diff line
@@ -772,7 +772,11 @@ static inline unsigned long *page_table_alloc_pgste(struct mm_struct *mm, 
		__free_page(page);

		return NULL;

	}

	pgtable_page_ctor(page);

	if (!pgtable_page_ctor(page)) {

		kfree(mp);

		__free_page(page);

		return NULL;

	}

	mp->vmaddr = vmaddr & PMD_MASK;

	INIT_LIST_HEAD(&mp->mapper);

	page->index = (unsigned long) mp;
@@ -902,7 +906,10 @@ unsigned long *page_table_alloc(struct mm_struct *mm, unsigned long vmaddr) 
		page = alloc_page(GFP_KERNEL|__GFP_REPEAT);

		if (!page)

			return NULL;

		pgtable_page_ctor(page);

		if (!pgtable_page_ctor(page)) {

			__free_page(page);

			return NULL;

		}

		atomic_set(&page->_mapcount, 1);

		table = (unsigned long *) page_to_phys(page);

		clear_table(table, _PAGE_INVALID, PAGE_SIZE);