routine file_sync ( file: file_t; RPT wait: int; omit_metadata: int);
Sync the individual file. If
omit_metadata is set, then it is only necessary
for the server to updated the actual contents of the file, not any associated
Servers that either don't keep any unsynchronized state (or don't have a
backing store at all) can simply
return 0. Examples: nfs.
Pass the call through to the underlying node.
Instead of to the underlying node, pass the call through to the backend (device).
file_syncfs (FD, true, true)-- invoke it on the passed file descriptor, do wait for completion, do allow omitting to update the associated metadata.
file_syncfs (FD, true, false)-- invoke it on the passed file descriptor, do wait for completion, don't allow omitting to update the associated metadata.