CVS commit: src/external/cddl/osnet/dist/uts/common/fs/zfs

["Greg Troxel" <gdt%netbsd.org@localhost>]

Module Name:    src
Committed By:   gdt
Date:           Sun Nov  3 14:00:52 UTC 2024

Modified Files:
        src/external/cddl/osnet/dist/uts/common/fs/zfs: zvol.c

Log Message:
zvol: Implement DIOCCACHESYNC

Similarly to FreeBSD, simply call zil_commit when the DIOCCACHESYNC
ioctl is invoked on a zvol.

Tested in a xen dom0 with a domU's xbds provided by zvol on dom0.  The
error message about DIOCCACHESYNC is gone, and (mysteriously)
operations in the domU seem faster.

Thanks to Michael van Elst via port-xen@ for pointing out where/how to
do this.


To generate a diff of this commit:
cvs rdiff -u -r1.13 -r1.14 \
    src/external/cddl/osnet/dist/uts/common/fs/zfs/zvol.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.