staging: erofs: fix some issues and clean up codes

From: Chao Yu <[email protected]>

This patchset mainly adds error handing code for erofs xattr subsystem. In addition, some code cleanups are also included in this patchset.

P.S. Some other patches are still previewing in the linux-erofs mailing list, which will be posted in the 2nd part later.

[changelog]
v1 -> v2:
[PATCH 2/9] staging: erofs: separate erofs_get_meta_page
- Put err_out stuff at the bottom of the function.
- Drop the question mark in the "truncated by others?". Pointed out by Dan Carpenter <dan.carpenter at oracle.com>
- fix `PTR_ERR applied after initialization to constant'. Reported by kbuild test robot <lkp at intel.com>
- fix compilation error (erofs is bypassed by BROKEN...).

[PATCH 3/9] staging: erofs: add error handling for xattr submodule
- drop all likely/unlikely hints in this patch.
- fix bare use of 'unsigned *' at drivers/staging/erofs/xattr.c:168. Pointed out by Dan Carpenter <dan.carpenter at oracle.com>

[PATCH 6/9] staging: erofs: fix vle_decompressed_index_clusterofs
- don't make functions inline
Pointed out by Dan Carpenter <dan.carpenter at oracle.com>

[PATCH 9/9] staging: erofs: fix potential overflow in erofs_grab_bio()
- in addition, we add one more patch above to fix potential overflow in this series.

Chao Yu (1):
staging: erofs: fix potential overflow in erofs_grab_bio()

Gao Xiang (8):
staging: erofs: introduce erofs_grab_bio
staging: erofs: separate erofs_get_meta_page
staging: erofs: add error handling for xattr submodule
staging: erofs: cleanup z_erofs_vle_work_{lookup, register}
staging: erofs: rearrange vle clustertype definitions
staging: erofs: fix vle_decompressed_index_clusterofs
staging: erofs: fix integer overflow on 32-bit platform
staging: erofs: fix compression mapping beyond EOF

 drivers/staging/erofs/Kconfig     |   9 ++
 drivers/staging/erofs/data.c      |  68 +++++++++-----
 drivers/staging/erofs/erofs_fs.h  |  11 +++
 drivers/staging/erofs/internal.h  |  66 ++++++++-----
 drivers/staging/erofs/unzip_vle.c | 149 +++++++++++++++---------------
 drivers/staging/erofs/xattr.c     | 127 +++++++++++++++++--------
 6 files changed, 273 insertions(+), 157 deletions(-)

2.18.0