[GIT PULL] exfat update for 7.1-rc1

[Namjae Jeon]

Hi Linus,

This is exfat update pull request for v7.1-rc1. I add a description of
this pull request below. Please pull exfat with following ones.

Thanks!

The following changes since commit 7dff99b354601dd01829e1511711846e04340a69:

  Remove WARN_ALL_UNSEEDED_RANDOM kernel config option (2026-02-23
11:18:48 -0800)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/linkinjeon/exfat.git
tags/exfat-for-7.1-rc1

for you to fetch changes up to 08cf4a8181b4378a0a50ea370391f30032c4e4ec:

  exfat: use exfat_chain_advance helper (2026-04-03 22:41:10 +0900)

----------------------------------------------------------------
Description for this pull request:
 - Implement FALLOC_FL_ALLOCATE_RANGE to add support for preallocating
   clusters without zeroing, helping to reduce file fragmentation.
 - Add a unified block readahead helper for FAT chain conversion, bitmap
   allocation, and directory entry lookups.
 - Optimize exfat_chain_cont_cluster() by caching buffer heads to minimize
   mark_buffer_dirty() and mirroring overhead during NO_FAT_CHAIN to
   FAT_CHAIN conversion.
 - Switch to truncate_inode_pages_final() in evict_inode() to prevent
   BUG_ON caused by shadow entries during reclaim.
 - Fix a 32-bit truncation bug in directory entry calculations by ensuring
   proper bitwise coercion.
 - Fix sb->s_maxbytes calculation to correctly reflect the maximum possible
   volume size for a given cluster size, resolving xfstests generic/213.
 - Introduced exfat_cluster_walk() helper to traverse FAT chains by
   a specified step, handling both ALLOC_NO_FAT_CHAIN and ALLOC_FAT_CHAIN
   modes.
 - Introduced exfat_chain_advance() helper to advance an exfat_chain
   structure, updating both the current cluster and remaining size.
 - Remove dead assignments and fix Smatch warnings.

----------------------------------------------------------------
Chi Zhiling (12):
      exfat: add block readahead in exfat_chain_cont_cluster
      exfat: use readahead helper in exfat_allocate_bitmap
      exfat: use readahead helper in exfat_get_dentry
      exfat: drop redundant sec parameter from exfat_mirror_bh
      exfat: optimize exfat_chain_cont_cluster with cached buffer heads
      exfat: fix error handling for FAT table operations
      exfat: fix incorrect directory checksum after rename to shorter name
      exfat: introduce exfat_cluster_walk helper
      exfat: use exfat_cluster_walk helper
      exfat: remove NULL cache pointer case in exfat_ent_get
      exfat: introduce exfat_chain_advance helper
      exfat: use exfat_chain_advance helper

David Timber (2):
      exfat: add fallocate FALLOC_FL_ALLOCATE_RANGE support
      exfat: fix s_maxbytes

Philipp Hahn (2):
      exfat: Drop dead assignment of num_clusters
      exfat: Fix bitwise operation having different size

Yang Wen (2):
      exfat: use truncate_inode_pages_final() at evict_inode()
      exfat: fix passing zero to ERR_PTR() in exfat_mkdir()

 fs/exfat/balloc.c    |  18 ++----
 fs/exfat/dir.c       | 173 ++++++++++++++-------------------------------------
 fs/exfat/exfat_fs.h  |  57 +++++++++++++++--
 fs/exfat/exfat_raw.h |   1 +
 fs/exfat/fatent.c    | 116 +++++++++++++++++++++++++---------
 fs/exfat/file.c      |  42 +++++++++++++
 fs/exfat/inode.c     |  19 ++----
 fs/exfat/misc.c      |   8 ++-
 fs/exfat/namei.c     |  38 ++++-------
 fs/exfat/super.c     |  11 +++-
 10 files changed, 265 insertions(+), 218 deletions(-)