DO NOT REPLY [Bug 7004] New: Use posix_fadvise to free cached file contents when done

[samba-bugs at samba.org]

https://bugzilla.samba.org/show_bug.cgi?id=7004

           Summary: Use posix_fadvise to free cached file contents when done
           Product: rsync
           Version: 3.0.6
          Platform: All
        OS/Version: Linux
            Status: NEW
          Severity: enhancement
          Priority: P3
         Component: core
        AssignedTo: wayned at samba.org
        ReportedBy: ted at midg3t.net
         QAContact: rsync-qa at samba.org


It would be good if rsync used posix_fadvise with POSIX_FADV_DONTNEED to notify
the kernel when it no longer needs file contents that have been synced to
prevent useful cache contents being dropped in favor of never-reused rsynced
files.

Tobias Oetiker wrote a patch & documentation about this:
  http://insights.oetiker.ch/linux/fadvise.html


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