[PATCH v2 00/12] erofs-utils: mkfs: introduce rebuild mode

[Jingbo Xu]

v2:
- add Reviewed-by tag from Gao Xiang
- patch 7: erofs_inode_tag_opaque() is merged into
  erofs_read_xattrs_from_disk(); simplify the implementation of
  erofs_read_xattrs_from_disk() in which erofs_setxattr() is used to set
  read xattrs directly; move all xattr name related macros to xattr.c;
  the long xattr name prefixes related logic now is all handled by
  erofs_getxattr() and erofs_setxattr() [1]
- patch 11: inode->i_ino[1] now is set to nid (i_ino[0] in v1) of source
  inode, and is used to distinguish the inode in the inode hash table

[1] https://lore.kernel.org/all/20230815091521.74661-1-jefflexu@linux.alibaba.com/

v1: https://lore.kernel.org/all/20230814034239.54660-1-jefflexu@linux.alibaba.com/

-------------------------

Introduce a new rebuild mode merging multiple erofs images generated
from either tarerfs index mode (--tar=i):

	mkfs.erofs --tar=i --aufs layer0.erofs layer0.tar
	...
	mkfs.erofs --tar=i --aufs layerN.erofs layerN.tar

	mkfs.erofs merge.erofs layerN.erofs ... layer0.erofs

or tarerofs non-index mode (--tar=f):

	mkfs.erofs --tar=f -Enoinline_data --aufs layer0.erofs
layer0.tar
	...
	mkfs.erofs --tar=f -Enoinline_data --aufs layerN.erofs
layerN.tar

	mkfs.erofs merge.erofs layerN.erofs ... layer0.erofs


Jingbo Xu (12):
  erofs-utils: fix overriding of i_rdev for special device
  erofs-utils: lib: add list_splice_tail() helper
  erofs-utils: lib: read i_ino in erofs_read_inode_from_disk()
  erofs-utils: lib: fix erofs_init_devices() in multidev mode
  erofs-utils: lib: keep self maintained devname
  erofs-utils: lib: make erofs_get_unhashed_chunk() global
  erofs-utils: lib: add erofs_read_xattrs_from_disk() helper
  erofs-utils: lib: add erofs_insert_ihash() helper
  erofs-utils: lib: add erofs_rebuild_dump_tree() helper
  erofs-utils: lib: add erofs_rebuild_get_dentry() helper
  erofs-utils: lib: add erofs_rebuild_load_tree() helper
  erofs-utils: mkfs: introduce rebuild mode

 include/erofs/blobchunk.h |   2 +
 include/erofs/inode.h     |   5 +-
 include/erofs/internal.h  |   8 +-
 include/erofs/list.h      |  20 ++
 include/erofs/rebuild.h   |  21 +++
 include/erofs/xattr.h     |  33 +---
 lib/Makefile.am           |   3 +-
 lib/blobchunk.c           |   2 +-
 lib/inode.c               |  33 +++-
 lib/io.c                  |  14 +-
 lib/namei.c               |   2 +
 lib/rebuild.c             | 387 ++++++++++++++++++++++++++++++++++++++
 lib/super.c               |  11 +-
 lib/tar.c                 | 195 +++++--------------
 lib/xattr.c               | 114 +++++++++++
 mkfs/Makefile.am          |   3 +-
 mkfs/main.c               | 199 +++++++++++++++-----
 17 files changed, 813 insertions(+), 239 deletions(-)
 create mode 100644 include/erofs/rebuild.h
 create mode 100644 lib/rebuild.c

-- 
2.19.1.6.gb485710b