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| author | Kirill A. Shutemov <kirill.shutemov@linux.intel.com> | 2013-11-14 14:31:39 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-11-15 09:32:18 +0900 |
| commit | e89cfa58a8358fdb4d4e79936c25222416ad415e (patch) | |
| tree | 55ff424692ee34c8f1fa60c1366b10afde1dfde7 /arch/s390 | |
| parent | 4f804943f99454ac79e0f448428447f1a72d09fc (diff) | |
| download | linux-e89cfa58a8358fdb4d4e79936c25222416ad415e.tar.gz linux-e89cfa58a8358fdb4d4e79936c25222416ad415e.tar.bz2 linux-e89cfa58a8358fdb4d4e79936c25222416ad415e.zip | |
s390: handle pgtable_page_ctor() fail
Signed-off-by: Kirill 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: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/mm/pgtable.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/arch/s390/mm/pgtable.c b/arch/s390/mm/pgtable.c index 1ea18fcfa211..e794c88f699a 100644 --- a/arch/s390/mm/pgtable.c +++ b/arch/s390/mm/pgtable.c @@ -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); |