Hi Jan,
There is a question about 2d01ddc86606 ("ext4: save error info to sb
through journal if available"). This commit describe that we can have
checksum failure with follow case:
1. ext4_handle_error will call ext4_commit_super which write directly to
the superblock
2. At the same time, jounalled update of the superblock is ongoing
However, after commit 05c2c00f3769 ("ext4: protect superblock
modifications with a buffer lock"), all the update for superblock and
the csum will be protected with buffer lock. It seems we won't get a
csum error after that commit and the journal logic in
flush_stashed_error_work seems useless.
Maybe there is something missing... Can you help to explain more for that...
Thanks,
Kun.
