vfs.git waitid(2) fix

[I hoped to throw RWF_... annotations into the same pull request, but since hch still hasn't replied with s-o-b...]

The following changes since commit da029c11e6b12f321f36dac8771e833b65cec962:

exec: Limit arg stack to at most 75% of _STK_LIM (2017-07-07 20:05:08 -0700)

are available in the git repository at:

git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs.git waitid-fix

for you to fetch changes up to 634a81609561f05266e1f625b6f2567c2e0b0419:

fix waitid(2) breakage (2017-07-08 11:26:39 -0400)

----------------------------------------------------------------
Al Viro (1):
fix waitid(2) breakage

 kernel/exit.c | 17 ++++++++++++-----
 1 file changed, 12 insertions(+), 5 deletions(-)