[GIT PULL] erofs fixes for 7.4-rc1

[Gao Xiang]

Hi Linus,

Could you consider these extra fixes for 7.4-rc1?

These patches address several new reported issues related to page
cache sharing, the new superblock_share feature, and recent metadata
path changes for file-backed mounts.

All commits have been in linux-next, and no potential merge conflicts
have been observed.

Thanks,
Gao Xiang

The following changes since commit 1137aa577a35e2684e8046c3e53f920e79c7cc60:

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

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs.git tags/erofs-for-7.4-rc1-2

for you to fetch changes up to 209108a5456171ab430e25b54b2dfe083455bfb6:

  erofs: drop unnecessary .read_folio() checks for file-backed mounts (2026-10-27 09:15:19 +0100)

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

 - Hold real inodes to fix mmap usage with page cache sharing

 - Fix metadata reads at the end of file-backed images with sub-page
   block sizes

 - Ensure disallowing superblock_share when device= is specified

 - Drop unnecessary .read_folio() checks for file-backed mounts to
   allow tmpfs as a backing fs

----------------------------------------------------------------
Gao Xiang (2):
      erofs: hold real inodes for shared files
      erofs: drop unnecessary .read_folio() checks for file-backed mounts

Hengyu Liang (1):
      erofs: fix metadata reads at the end of file-backed images

Zhan Xusheng (1):
      erofs: fix disallowing superblock_share if device= is set

 fs/erofs/fileio.c | 18 +++++++++++++++---
 fs/erofs/ishare.c | 43 ++++++++++++++++++++++++++++++-------------
 fs/erofs/super.c  |  9 ++++-----
 3 files changed, 49 insertions(+), 21 deletions(-)