CVS commit: src/sys/dev

["Michael van Elst" <mlelstv%netbsd.org@localhost>]

Module Name:    src
Committed By:   mlelstv
Date:           Sun Oct  7 12:00:07 UTC 2018

Modified Files:
        src/sys/dev: vnd.c

Log Message:
Use IO_DIRECT for file I/O to reduce buffer cache contention.

Restore old behaviour to flush pages only when usage exceeds 1MB.

No longer use PGO_SYNCIO, regular writes to the device do not require
the data to reach stable storage, the DIOCCACHESYNC ioctl is used
for that.


To generate a diff of this commit:
cvs rdiff -u -r1.268 -r1.269 src/sys/dev/vnd.c

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