[GIT PULL] fsverity updates for 5.6

[Eric Biggers]

The following changes since commit fd6988496e79a6a4bdb514a4655d2920209eb85d:

  Linux 5.5-rc4 (2019-12-29 15:29:16 -0800)

are available in the Git repository at:

  https://git.kernel.org/pub/scm/fs/fscrypt/fscrypt.git tags/fsverity-for-linus

for you to fetch changes up to da3a3da4e6c68459618a1043dcb12b450312a4e2:

  fs-verity: use u64_to_user_ptr() (2020-01-14 13:28:28 -0800)

----------------------------------------------------------------

- Optimize fs-verity sequential read performance by implementing
  readahead of Merkle tree pages.  This allows the Merkle tree to be
  read in larger chunks.

- Optimize FS_IOC_ENABLE_VERITY performance in the uncached case by
  implementing readahead of data pages.

- Allocate the hash requests from a mempool in order to eliminate the
  possibility of allocation failures during I/O.

----------------------------------------------------------------
Eric Biggers (4):
      fs-verity: implement readahead for FS_IOC_ENABLE_VERITY
      fs-verity: implement readahead of Merkle tree pages
      fs-verity: use mempool for hash requests
      fs-verity: use u64_to_user_ptr()

 fs/ext4/verity.c             | 47 ++++++++++++++++++++-
 fs/f2fs/data.c               |  2 +-
 fs/f2fs/f2fs.h               |  3 ++
 fs/f2fs/verity.c             | 47 ++++++++++++++++++++-
 fs/verity/enable.c           | 67 +++++++++++++++++++++++-------
 fs/verity/fsverity_private.h | 17 +++++---
 fs/verity/hash_algs.c        | 98 +++++++++++++++++++++++++++++++++-----------
 fs/verity/open.c             |  5 ++-
 fs/verity/verify.c           | 47 ++++++++++++++-------
 include/linux/fsverity.h     |  7 +++-
 10 files changed, 273 insertions(+), 67 deletions(-)