Hi, Dave,
Thanks for the review!
or better still, factor xfs_file_fsync() so that it calls a helper
that doesn't wait for data IO completion, and call that helper here
too. The semantics of fsync/fdatasync are too complex to have to
implement and maintain in multiple locations....
I definitely agree with consolidating things. However, there are four
blocking calls in xfs_file_fsync (filemap_write_and_wait_range,
xfs_blkdev_issue_flush, _xfs_log_force_lsn, and another call to
xfs_blkdev_issue_flush). How would you propose to make that
non-blocking given that those steps have to happen in sequence?
Cheers,
Jeff