[GIT PULL] exfat update for 5.13-rc1

["Namjae Jeon" <namjae.jeon@samsung.com>]

Hi Linus,

This is exfat update pull request for v5.13-rc1. I add description of
this pull request on below. Please pull exfat with following ones.

Thanks!

The following changes since commit 9f4ad9e425a1d3b6a34617b8ea226d56a119a717:

  Linux 5.12 (2021-04-25 13:49:08 -0700)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/linkinjeon/exfat.git tags/exfat-for-5.13-rc1

for you to fetch changes up to c6e2f52e3051e8d898d38840104638ca8bbcdec2:

  exfat: speed up iterate/lookup by fixing start point of traversing cluster chain (2021-04-27 20:45:07 +0900)

----------------------------------------------------------------
Description for this pull request:
 - Improve write performance with dirsync mount option.
 - Improve lookup performance.
 - Add support for FITRIM ioctl.
 - Fix a bug with discard option.

----------------------------------------------------------------
Hyeongseok Kim (5):
      exfat: fix erroneous discard when clear cluster bit
      exfat: introduce bitmap_lock for cluster bitmap access
      exfat: add support ioctl and FITRIM function
      exfat: improve write performance when dirsync enabled
      exfat: speed up iterate/lookup by fixing start point of traversing cluster chain

 fs/exfat/balloc.c   | 95 ++++++++++++++++++++++++++++++++++++++++++++++-------
 fs/exfat/dir.c      | 26 +++++++++++----
 fs/exfat/exfat_fs.h | 11 +++++--
 fs/exfat/fatent.c   | 41 +++++++++++++++++------
 fs/exfat/file.c     | 53 ++++++++++++++++++++++++++++++
 fs/exfat/inode.c    |  3 +-
 fs/exfat/namei.c    | 11 +++++--
 fs/exfat/super.c    |  1 +
 8 files changed, 206 insertions(+), 35 deletions(-)