mm: use helper function mapping_allow_writable()

Commit 4bb5f5d9395b ("mm: allow drivers to prevent new writable mappings")
changed i_mmap_writable from unsigned int to atomic_t and add the helper
function mapping_allow_writable() to atomic_inc i_mmap_writable.  But it
forgot to use this helper function in dup_mmap() and __vma_link_file().

Signed-off-by: Miaohe Lin <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Cc: Christian Brauner <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: "Eric W. Biederman" <[email protected]>
Cc: Christian Kellner <[email protected]>
Cc: Suren Baghdasaryan <[email protected]>
Cc: Adrian Reber <[email protected]>
Cc: Shakeel Butt <[email protected]>
Cc: Aleksa Sarai <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Linus Torvalds <[email protected]>

0 files changed, 0 insertions, 0 deletions