Tell in manual page that one should use open(2) O_DIRECT flag rather than
raw device.
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
the buffer cache, the buffer cache will no longer correspond to the
contents of the actual storage device underneath. This is deliberate,
but is regarded either a bug or a feature depending on who you ask!
+.SH NOTES
+Rather than using raw devices applications should prefer
+.BR open (2)
+devices, such as /dev/sda1, with the O_DIRECT flag.
.SH AUTHOR
Stephen Tweedie (sct@redhat.com)
.SH AVAILABILITY