erofs fixes for 7.2-rc4

Hi Linus,

Could you consider these fixes for 7.2-rc4?

All commits are small as shown below: anyway, the most impacted one fixes a regression introduced in v7.1 to avoid false corruption reports for some ztailpacking-enabled images.

Thanks,
Gao Xiang

The following changes since commit dc59e4fea9d83f03bad6bddf3fa2e52491777482:

Linux 7.2-rc1 (2026-06-28 12:01:31 -0700)

are available in the Git repository at:

git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs.git tags/erofs-for-7.2-rc4-fixes

for you to fetch changes up to 1572282de6d3377ca8605d48c50df3a8c08468e9:

erofs: hide "cache_strategy=" for plain filesystems (2026-07-13 16:41:42 +0800)

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

- Fix sanity checks for ztailpacking tail pclusters to avoid false corruption reports

- Use more informative s_id for file-backed mounts

- Hide the meaningless "cache_strategy=" mount option on plain (uncompressed) filesystems

- Remove the unneeded erofs_is_ishare_inode() helper

----------------------------------------------------------------
Gao Xiang (4):
erofs: use more informative s_id for file-backed mounts
erofs: relax sanity check for tail pclusters due to ztailpacking
erofs: get rid of erofs_is_ishare_inode() helper
erofs: hide "cache_strategy=" for plain filesystems

 fs/erofs/ishare.c |  8 +-------
 fs/erofs/super.c  | 19 +++++--------------
 fs/erofs/zmap.c   |  3 ++-
 3 files changed, 8 insertions(+), 22 deletions(-)