[GIT PULL] erofs updates for 7.4-rc1

[GIT PULL] erofs updates for 7.4-rc1

[Gao Xiang]

Hi Linus,

Could consider these commits for 7.4-rc1?

The most notable change is to support superblock sharing for composefs,
thanks to Giuseppe again: it needs a vfs change, which already goes
through vfs tree [1] so I merge the corresponding vfs branch.

Another one switches to iomap for file-backed mounts on unencoded inodes,
which enables efficient sub-folio I/Os. The others are all random ones.

All commits have been in -next and no potential merge conflict is
observed.

Thanks,
Gao Xiang

[1] https://lore.kernel.org/r/20261016-vfs-7.4-rc1.shared.super-9c2de4415e8b@brauner

The following changes since commit a90ee4305c4a5df72c11b31dacfdc76e00fcf78a:

  Linux 7.3-rc6 (2026-10-04 13:45:25 -0700)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs.git tags/erofs-for-7.4-rc1

for you to fetch changes up to 1137aa577a35e2684e8046c3e53f920e79c7cc60:

  erofs: enable iomap for file-backed mounts on unencoded inodes (2026-10-17 17:29:36 +0200)

----------------------------------------------------------------
Changes since last update:

 - Support superblock sharing for file-backed mounts

 - Use iomap for file-backed mounts on unencoded inodes

 - Minor fixes and cleanups

----------------------------------------------------------------
Binglei Wang (1):
      erofs: fix xattrs handling when metadata compression is used

Chao Yu (1):
      MAINTAINERS: erofs: add dev branch to git tree entry

Christian Brauner (1):
      Merge patch "erofs: share the superblock for file-backed mounts"

Gao Xiang (3):
      Merge branch 'vfs-7.4.shared.super' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs.git
      mailmap: update entry for Gao Xiang
      erofs: enable iomap for file-backed mounts on unencoded inodes

Giuseppe Scrivano (2):
      fs: rename vfs_get_super() to get_tree_super() and export it
      erofs: reuse superblock for file-backed mounts

Gyokhan Kochmarla (1):
      erofs: use on-disk blkszbits for lz4 max pcluster bound

Jingbo Xu (1):
      MAINTAINERS: erofs: update my email address

 .mailmap                            |   1 +
 Documentation/filesystems/erofs.rst |   7 ++
 MAINTAINERS                         |   4 +-
 fs/erofs/data.c                     |  34 ++++----
 fs/erofs/decompressor.c             |   2 +-
 fs/erofs/fileio.c                   | 157 +++++++++++-------------------------
 fs/erofs/internal.h                 |  12 ++-
 fs/erofs/ishare.c                   |   4 +-
 fs/erofs/super.c                    |  56 ++++++++++++-
 fs/super.c                          |  19 ++++-
 include/linux/fs_context.h          |   4 +
 11 files changed, 161 insertions(+), 139 deletions(-)