NeilBrown
b880092109
NFSDv4: use export cache flushtime for changeid on V4ROOT objects.
...
If you change the set of filesystems that are exported, then
the contents of various directories in the NFSv4 pseudo-root
is likely to change. However the change-id of those
directories is currently tied to the underlying directory,
so the client may not see the changes in a timely fashion.
This patch changes the change-id number to be derived from the
"flush_time" of the export cache. Whenever any changes are
made to the set of exported filesystems, this flush_time is
updated. The result is that clients see changes to the set
of exported filesystems much more quickly, often immediately.
Signed-off-by: NeilBrown <neilb@suse.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2017-02-06 17:29:22 -05:00
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