diff options
| author | Alex Shi <alex.shi@linaro.org> | 2017-01-09 12:01:35 +0800 |
|---|---|---|
| committer | Alex Shi <alex.shi@linaro.org> | 2017-01-09 12:01:35 +0800 |
| commit | 19192a140ad72b5bd0d57620bfe236bc03561bb6 (patch) | |
| tree | dc8289d075edcb1c23add72c425494a1e05e6f86 /kernel/fork.c | |
| parent | 282b308ad3b60ef0a55ff8b1ef6f16dadcede935 (diff) | |
| parent | eaa88578f2135fa8548d5f127259904a1b3f44c0 (diff) | |
Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android
Diffstat (limited to 'kernel/fork.c')
| -rw-r--r-- | kernel/fork.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/kernel/fork.c b/kernel/fork.c index 18a5cb17035a..c85efa77e825 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -585,7 +585,8 @@ static void mm_init_owner(struct mm_struct *mm, struct task_struct *p) #endif } -static struct mm_struct *mm_init(struct mm_struct *mm, struct task_struct *p) +static struct mm_struct *mm_init(struct mm_struct *mm, struct task_struct *p, + struct user_namespace *user_ns) { mm->mmap = NULL; mm->mm_rb = RB_ROOT; @@ -625,6 +626,7 @@ static struct mm_struct *mm_init(struct mm_struct *mm, struct task_struct *p) if (init_new_context(p, mm)) goto fail_nocontext; + mm->user_ns = get_user_ns(user_ns); return mm; fail_nocontext: @@ -670,7 +672,7 @@ struct mm_struct *mm_alloc(void) return NULL; memset(mm, 0, sizeof(*mm)); - return mm_init(mm, current); + return mm_init(mm, current, current_user_ns()); } /* @@ -685,6 +687,7 @@ void __mmdrop(struct mm_struct *mm) destroy_context(mm); mmu_notifier_mm_destroy(mm); check_mm(mm); + put_user_ns(mm->user_ns); free_mm(mm); } EXPORT_SYMBOL_GPL(__mmdrop); @@ -943,7 +946,7 @@ static struct mm_struct *dup_mm(struct task_struct *tsk) memcpy(mm, oldmm, sizeof(*mm)); - if (!mm_init(mm, tsk)) + if (!mm_init(mm, tsk, mm->user_ns)) goto fail_nomem; err = dup_mmap(mm, oldmm); |