The expiration in autofs v4 of the 2.4.0 kernels doesn't seem to work.
I'm using kernel 2.4.0-test3-pre2 with autofs4 and autofs-4.0.0pre7.
After turning on debugging output, I found out that expiration doesn't
work because is_tree_busy() always returns 1, even if the filesystem
is not in use. I suspect that the busy count calculation is incorrect.
The patch below changes this, so that both single mounts, and tree
mounts will now unmount correctly. However, there is still a problem
with a local mount: the symlink that is created instead of the NFS
mount is not expired.
-- Dick Streefland //// TASKING Software BV dick_streefland@tasking.com (@ @) http://www.tasking.com --------------------------------oOO--(_)--OOo------------------------------ linux/fs/autofs4/expire.c.orig Mon May 8 20:17:47 2000 +++ linux/fs/autofs4/expire.c Mon Jul 3 17:14:11 2000 @@ -22,7 +22,7 @@ struct list_head *next; int count; - count = atomic_read(&mnt->mnt_count); + count = atomic_read(&mnt->mnt_count) - 2; repeat: next = this_parent->mnt_mounts.next; resume: @@ -32,7 +32,7 @@ mnt_child); next = tmp->next; /* Decrement count for unused children */ - count += atomic_read(&p->mnt_count) - 1; + count += atomic_read(&p->mnt_count) - 2; if (!list_empty(&p->mnt_mounts)) { this_parent = p; goto repeat;
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This archive was generated by hypermail 2b29 : Fri Jul 07 2000 - 21:00:12 EST