Recent changes mean sb_min_blocksize() can now fail

[Phillip Lougher]

Hi,

A recent (post 6.14) change to the kernel means sb_min_blocksize() can now fail,
and any filesystem which doesn't check the result may behave unexpectedly as a
result.  This change has recently affected Squashfs, and checking the kernel code,
a number of other filesystems including isofs, gfs2, exfat, fat and xfs do not
check the result.  This is a courtesy email to warn others of this change.

The following emails give the relevant details.

https://lore.kernel.org/all/2a13ea1c-08df-4807-83d4-241831b7a2ec@xxxxxxxxxxxxxxx/
https://lore.kernel.org/all/129d4f39-6922-44e9-8b1c-6455ee564dda@xxxxxxxxxxxxxxx/

Regards

Phillip