autofs-5.1.8 - dont delay expire
From: Ian Kent <raven@themaw.net>
There's a delay on expire of submounts that can be as much as the
expire timeout. This was originally an attempt to reduce re-reading
the map but it can cause very long delays on expire.
So get rid of the delay and allow submounts to expire normally.
Signed-off-by: Ian Kent <raven@themaw.net>
---
CHANGELOG | 1 +
daemon/master.c | 9 ++++-----
daemon/state.c | 30 ++++--------------------------
3 files changed, 9 insertions(+), 31 deletions(-)
diff --git a/CHANGELOG b/CHANGELOG
index c24a7c82..de25c072 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -59,6 +59,7 @@
- fix return status of mount_autofs().
- don't close lookup at umount.
- fix deadlock in lookups.
+- dont delay expire.
19/10/2021 autofs-5.1.8
- add xdr_exports().
diff --git a/daemon/master.c b/daemon/master.c
index c082d319..178fb842 100644
--- a/daemon/master.c
+++ b/daemon/master.c
@@ -1259,17 +1259,16 @@ int master_notify_submount(struct autofs_point *ap, const char *path, enum state
st_wait_task(this->ap, state, 0);
/*
- * If our submount gets to state ST_SHUTDOWN, ST_SHUTDOWN_PENDING or
- * ST_SHUTDOWN_FORCE we need to wait until it goes away or changes
- * to ST_READY.
+ * If our submount gets to state ST_SHUTDOWN_PENDING or
+ * ST_SHUTDOWN_FORCE we need to wait until it goes away
+ * or changes to state ST_SHUTDOWN or ST_READY.
*/
st_mutex_lock();
while ((sbmnt = mnts_find_submount(path))) {
struct timespec t = { 0, 300000000 };
struct timespec r;
- if (sbmnt->ap->state != ST_SHUTDOWN &&
- sbmnt->ap->state != ST_SHUTDOWN_PENDING &&
+ if (sbmnt->ap->state != ST_SHUTDOWN_PENDING &&
sbmnt->ap->state != ST_SHUTDOWN_FORCE) {
ret = 0;
mnts_put_mount(sbmnt);
diff --git a/daemon/state.c b/daemon/state.c
index 4e70a330..28ad68ca 100644
--- a/daemon/state.c
+++ b/daemon/state.c
@@ -99,36 +99,14 @@ void expire_cleanup(void *arg)
/*
* If we're a submount and we've just pruned or
* expired everything away, try to shut down.
- *
- * Since we use the the fact that a mount will not
- * expire for at least ap->exp_timeout to avoid a
- * mount <-> expire race we need to wait before
- * letting a submount expire away. We also need
- * them to go away fairly quickly so the owner
- * mount expires in a reasonable time. Just skip
- * one expire check after it's no longer busy before
- * allowing it to shutdown.
- *
- * But if this mount point is an amd format map it
- * is better to keep the mount around longer. This
- * is because of the common heavy reuse of maps in
- * amd maps and we want to try and avoid constantly
- * re-reading large maps.
*/
if (ap->submount && !success) {
rv = ops->askumount(ap->logopt, ap->ioctlfd, &idle);
- if (!rv && idle && ap->submount > 1) {
- struct map_source *map = ap->entry->maps;
-
- if (ap->submount > 4 ||
- !(map->flags & MAP_FLAG_FORMAT_AMD)) {
- next = ST_SHUTDOWN_PENDING;
- break;
- }
+ if (!rv && idle) {
+ next = ST_SHUTDOWN_PENDING;
+ break;
}
- ap->submount++;
- } else if (ap->submount > 1)
- ap->submount = 1;
+ }
if (ap->state == ST_EXPIRE)
conditional_alarm_add(ap, ap->exp_runfreq);