Claude review: ext4: use PRIino format for i_ino

[Claude Code Review Bot <claude-review@example.com>]

Patch Review

The largest individual filesystem patch (19 files, ~620 lines of diff). The format string changes are mechanical, but the arithmetic changes deserve attention:

```c
-	*group = (*group + parent->i_ino) % ngroups;
+	*group = (*group + (unsigned int)parent->i_ino) % ngroups;
```

This cast to `unsigned int` prevents a u64 modulo on 32-bit (which would require `div_u64()`). Since ext4 inode numbers fit in 32 bits, this is correct. However, using `(u32)` would be more idiomatic in kernel code.

```c
-	goal = (((inode->i_ino - 1) / EXT4_INODES_PER_GROUP(inode->i_sb)) *
+	goal = (div_u64(inode->i_ino - 1, EXT4_INODES_PER_GROUP(inode->i_sb)) *
```

Correct -- `div_u64()` is needed because 64-bit division by 32-bit value requires a helper on 32-bit arches.

```c
-	int hash = ac->ac_inode->i_ino % sbi->s_mb_nr_global_goals;
+	int hash = (unsigned int)ac->ac_inode->i_ino % sbi->s_mb_nr_global_goals;
```

Same pattern as above, correct for ext4. The `__field(ino_t, ...)` to `__field(u64, ...)` changes in ext4 trace events are also correct.

The type change from `unsigned long` to `kino_t` for the `ino` parameter in `__ext4_grp_locked_error()` is correct.

### PATCHES 8-58: Filesystem-specific PRIino conversions

These are all mechanical format string conversions. I sampled several (nfsd, lockd, nfs, f2fs, jbd2, locks, proc, 9p, affs, afs, befs, cachefiles, ceph, drm/amdgpu, fsnotify, net, uprobes, dma-buf, fscrypt, fsverity, iomap, and the VFS core). They all follow the same pattern of replacing `%lu`/`%lx` with `"%" PRIino "u"`/`"%" PRIino "x"` and changing local variable types from `unsigned long` to `kino_t` where appropriate.

The drm/amdgpu patch (050) is a good example of the minimal changes needed:

```c
-	seq_printf(m, " imported from ino:%lu", file_inode(dma_buf->file)->i_ino);
+	seq_printf(m, " imported from ino:%" PRIino "u", file_inode(dma_buf->file)->i_ino);
```

**No issues found in the sampled patches.**

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