diff options
Diffstat (limited to 'mm/mseal.c')
| -rw-r--r-- | mm/mseal.c | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/mm/mseal.c b/mm/mseal.c index bf783bba8ed0..c8787cc6ba55 100644 --- a/mm/mseal.c +++ b/mm/mseal.c @@ -40,9 +40,17 @@ static bool can_modify_vma(struct vm_area_struct *vma) static bool is_madv_discard(int behavior) { - return behavior & - (MADV_FREE | MADV_DONTNEED | MADV_DONTNEED_LOCKED | - MADV_REMOVE | MADV_DONTFORK | MADV_WIPEONFORK); + switch (behavior) { + case MADV_FREE: + case MADV_DONTNEED: + case MADV_DONTNEED_LOCKED: + case MADV_REMOVE: + case MADV_DONTFORK: + case MADV_WIPEONFORK: + return true; + } + + return false; } static bool is_ro_anon(struct vm_area_struct *vma) @@ -248,7 +256,7 @@ static int apply_mm_seal(unsigned long start, unsigned long end) * * unseal() is not supported. */ -static int do_mseal(unsigned long start, size_t len_in, unsigned long flags) +int do_mseal(unsigned long start, size_t len_in, unsigned long flags) { size_t len; int ret = 0; |