mm: untag user pointers in mmap/munmap/mremap/brk

mm: untag user pointers in mmap/munmap/mremap/brk

There isn't a good reason to differentiate between the user address space
layout modification syscalls and the other memory permission/attributes
ones (e.g.  mprotect, madvise) w.r.t.  the tagged address ABI.  Untag the
user addresses on entry to these functions.

Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Catalin Marinas <[email protected]>
Acked-by: Will Deacon <[email protected]>
Acked-by: Andrey Konovalov <[email protected]>
Cc: Vincenzo Frascino <[email protected]>
Cc: Szabolcs Nagy <[email protected]>
Cc: Kevin Brodsky <[email protected]>
Cc: Dave P Martin <[email protected]>
Cc: Dave Hansen <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>