Merge tag 'erofs-for-6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs

Pull erofs updates from Gao Xiang:
 "We now support metadata compression. It can be useful for embedded use
  cases or archiving a large number of small files.

  Additionally, readdir performance has been improved by enabling
  readahead (note that it was already common practice for ext3/4 non-dx
  and f2fs directories). We may consider further improvements later to
  align with ext4's s_inode_readahead_blks behavior for slow devices
  too.

  The remaining commits are minor.

  Summary:

   - Add support for metadata compression

   - Enable readahead for directories to improve readdir performance

   - Minor fixes and cleanups"

* tag 'erofs-for-6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs:
  erofs: support to readahead dirent blocks in erofs_readdir()
  erofs: implement metadata compression
  erofs: add on-disk definition for metadata compression
  erofs: fix build error with CONFIG_EROFS_FS_ZIP_ACCEL=y
  erofs: remove ENOATTR definition
  erofs: refine erofs_iomap_begin()
  erofs: unify meta buffers in z_erofs_fill_inode()
  erofs: remove need_kmap in erofs_read_metabuf()
  erofs: do sanity check on m->type in z_erofs_load_compact_lcluster()
  erofs: get rid of {get,put}_page() for ztailpacking data

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