[GIT PULL] afs: Fix directory entry name handling

[David Howells]

Hi Linus,

Could you pull these two commits, assuming Daniel doesn't object?  The first
is the fix for the strnlen() array limit check and the second fixes the
calculation of the number of dirent records used to represent any particular
filename length.

I've added Tested-bys for Marc Dionne into the branch, but otherwise the
patches should be the same as have been on the branch since the 23rd (was
commit 587f19fc90c1).

David
---
The following changes since commit a409ed156a90093a03fe6a93721ddf4c591eac87:

  Merge tag 'gpio-v5.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio (2020-12-17 18:07:20 -0800)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git tags/afs-fixes-04012021

for you to fetch changes up to 366911cd762db02c2dd32fad1be96b72a66f205d:

  afs: Fix directory entry size calculation (2021-01-04 12:25:19 +0000)

----------------------------------------------------------------
AFS fixes

----------------------------------------------------------------
David Howells (2):
      afs: Work around strnlen() oops with CONFIG_FORTIFIED_SOURCE=y
      afs: Fix directory entry size calculation

 fs/afs/dir.c               | 49 ++++++++++++++++++++++++----------------------
 fs/afs/dir_edit.c          |  6 ++----
 fs/afs/xdr_fs.h            | 25 +++++++++++++++++++----
 include/trace/events/afs.h |  2 ++
 4 files changed, 51 insertions(+), 31 deletions(-)