Anton Ivanov 54ebe4060f um: Use fdatasync() when mapping the UBD FSYNC command
We do not need to update the metadata (atime, mtime, etc)
on the UBD file and/or the COW file until UML exits.

UBD image mtime is checked in UML only when opening
the files. After that they are locked and used
exclusively by a single UML instance, so there is
no point wasting resources on updating metadata on
every sync. We can sync data only. The host will
always update mtime if a file has been modified upon
closing it.

Signed-off-by: Anton Ivanov <anton.ivanov@cambridgegreys.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
2020-06-02 22:37:55 +02:00
..
2020-03-29 23:28:43 +02:00
2020-03-29 23:20:07 +02:00