[PATCH v2 1/2] erofs: simplify tail inline pcluster handling

[Gao Xiang]

On 2025/2/24 20:37, Gao Xiang wrote:
> Commit ab92184ff8f1 ("erofs: add on-disk compressed tail-packing inline
> support") introduced the flag `Z_EROFS_ADVISE_INLINE_PCLUSTER`, which is
> redundant because `h_idata_size != 0` serves the same purpose.
> 
> Additionally, merge `z_idataoff` and `z_fragmentoff` since these two
> features are mutually exclusive for a given inode.
> 
> Signed-off-by: Gao Xiang <hsiangkao at linux.alibaba.com>
> ---
> new patch.

Note that `Z_EROFS_ADVISE_INLINE_PCLUSTER` now is left for
the compatibility purposes, only `mkfs.erofs` uses it in
the future.

Thanks,
Gao Xiang