On Thu, Feb 24, 2011 at 02:59:47PM +0000, Al Viro wrote:
> Well... In principle, you could mark all mountpoints in a tree as managed,
> have an "expiry search in progress" flag to stop everything in there while
> the expiry happens, then wait out all RCU walks in progress, then go ahead
> with your expiry checks. Would that work for you?
There's at least one leak I can see in expiry.c, BTW - autofs4_expire_direct()
leaks root dentry if you hit
/* No point expiring a pending mount */
if (ino->flags & AUTOFS_INF_PENDING) {
spin_unlock(&sbi->fs_lock);
return NULL;
}
in there. Try to stick dput(root) before that return and see if that's what
it is...
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