diff options
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/memory.c | 15 | ||||
| -rw-r--r-- | mm/migrate.c | 2 | ||||
| -rw-r--r-- | mm/slob.c | 2 |
3 files changed, 17 insertions, 2 deletions
diff --git a/mm/memory.c b/mm/memory.c index 164951c4730..fc031d68327 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -3049,3 +3049,18 @@ void print_vma_addr(char *prefix, unsigned long ip) } up_read(¤t->mm->mmap_sem); } + +#ifdef CONFIG_PROVE_LOCKING +void might_fault(void) +{ + might_sleep(); + /* + * it would be nicer only to annotate paths which are not under + * pagefault_disable, however that requires a larger audit and + * providing helpers like get_user_atomic. + */ + if (!in_atomic() && current->mm) + might_lock_read(¤t->mm->mmap_sem); +} +EXPORT_SYMBOL(might_fault); +#endif diff --git a/mm/migrate.c b/mm/migrate.c index d8f07667fc8..037b0967c1e 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -998,7 +998,7 @@ static void do_pages_stat_array(struct mm_struct *mm, unsigned long nr_pages, unsigned long addr = (unsigned long)(*pages); struct vm_area_struct *vma; struct page *page; - int err; + int err = -EFAULT; vma = find_vma(mm, addr); if (!vma) diff --git a/mm/slob.c b/mm/slob.c index cb675d12679..bf7e8fc3aed 100644 --- a/mm/slob.c +++ b/mm/slob.c @@ -535,7 +535,7 @@ struct kmem_cache *kmem_cache_create(const char *name, size_t size, struct kmem_cache *c; c = slob_alloc(sizeof(struct kmem_cache), - flags, ARCH_KMALLOC_MINALIGN, -1); + GFP_KERNEL, ARCH_KMALLOC_MINALIGN, -1); if (c) { c->name = name; |