--On Tuesday, August 24, 2004 9:54 AM +0200 Arjan van de Ven
<arjanv(a)redhat.com> wrote:
Barriers (or in scsi terms "ordered tags") basically tell
the disk
"don't reorder past THIS point". In principle this alleviates the need
for the journalling filesystem to wait on the first IO before submitting
the second IO (the metadata one).
Excellent explanation, thanks.