[GIT PULL] overflow helper addition for v5.8-rc2

[Kees Cook]

Hi Linus,

Please pull this tiny overflow helper addition for v5.8-rc2. During the
treewide clean-ups of zero-length "flexible arrays", the struct_size()
helper was heavily used, but it was noticed that many times it would
have been nice to have an additional helper to get the size of just the
flexible array itself. This need appears to be even more common when
cleaning up the 1-byte array "flexible arrays", so Gustavo implemented
it. I'd love to get this landed before -rc2 so it can be used during
the v5.9 dev cycle to ease the 1-byte array cleanups.

Thanks!

-Kees

The following changes since commit b3a9e3b9622ae10064826dccb4f7a52bd88c7407:

  Linux 5.8-rc1 (2020-06-14 12:45:04 -0700)

are available in the Git repository at:

  https://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git tags/overflow-v5.8-rc2

for you to fetch changes up to b19d57d0f3cc6f1022edf94daf1d70506a09e3c2:

  overflow.h: Add flex_array_size() helper (2020-06-16 20:45:08 -0700)

----------------------------------------------------------------
Add flex-array size helper

----------------------------------------------------------------
Gustavo A. R. Silva (1):
      overflow.h: Add flex_array_size() helper

 include/linux/overflow.h | 25 +++++++++++++++++++++----
 1 file changed, 21 insertions(+), 4 deletions(-)

-- 
Kees Cook