Commits
Pranay Kr. Srivastava committed 4743f839906
ext4: Fix WARN_ON_ONCE in ext4_commit_super() If there are racing calls to ext4_commit_super() it's possible for another writeback of the superblock to result in the buffer being marked with an error after we check if the buffer is marked as having a write error and the buffer up-to-date flag is set again. If that happens mark_buffer_dirty() can end up throwing a WARN_ON_ONCE. Fix this by moving this check to write before we call write_buffer_dirty(), and keeping the buffer locked during this whole sequence. Signed-off-by: Pranay Kr. Srivastava <pranjas@gmail.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu>