[PATCH 0/9] ubifs: Fix a serious of inconsistent problems when powercut happens

[Zhihao Cheng]

UBIFS is tolerant of powercut, this patchset fix some inconsistent
problems when powercut happens.
Xfstests,mtd-utils and powercut tests[1] are passed(Enable chk* debugging)
after this patchset applied.

[1] https://bugzilla.kernel.org/show_bug.cgi?id=218309

performance regression:

4GB nandsim 256KB PEB 4KB page

1. fio

direct=0
bs=4k
sync=0
iodepth=128
rw=write
iodepth_batch_complete=1
iodepth_batch=1
numjobs=1
directory=/root/temp
size=1G
runtime=20s
time_based=1
                         before     after
1 thread seq write      412MiB/s   409MiB/s
1 thread random write   402MiB/s   397MiB/s
4 thread seq write      163MiB/s   164MiB/s
4 thread random write   162MiB/s   160MiB/s

2. fsmark
fs_mark -d /root/temp -s 10240 -n 1000
      before               after
   7131 Files/sec       7090 Files/sec


Zhihao Cheng (9):
  ubifs: Fix unattached xattr inode if powercut happens after deleting
  ubifs: Don't add xattr inode into orphan area
  Revert "ubifs: ubifs_symlink: Fix memleak of inode->i_link in error
    path"
  ubifs: Remove insert_dead_orphan from replaying orphan process
  ubifs: Fix adding orphan entry twice for the same inode
  ubifs: Move ui->data initialization after initializing security
  ubifs: Fix space leak when powercut happens in linking tmpfile
  ubifs: Fix unattached inode when powercut happens in creating
  ubifs: dbg_orphan_check: Fix missed key type checking

 fs/ubifs/dir.c     |  91 +++++++++++++++-----------
 fs/ubifs/journal.c |  14 +++-
 fs/ubifs/orphan.c  | 155 ++++++++-------------------------------------
 fs/ubifs/ubifs.h   |   7 +-
 fs/ubifs/xattr.c   |   2 +-
 5 files changed, 92 insertions(+), 177 deletions(-)

-- 
2.39.2