From 487ea5af6358cb27c994e2cf056d4ee0872e43c3 Mon Sep 17 00:00:00 2001
From: Csaba Henk <csaba@gluster.com>
Date: Wed, 26 Aug 2009 19:17:22 +0200
Subject: [PATCH] fuse: limit user-specified values of max background requests

An untrusted user could DoS the system if s/he were allowed to accumulate an
arbitrary number of pending background requests by setting the above limits
to extremely high values in INIT. This patch excludes this possibility by
imposing global upper limits on the possible values of per-mount "max
background requests" and "congestion threshold" parameters for unprivileged
FUSE filesystems.

These global limits are implemented as module parameters.

Signed-off-by: Csaba Henk <csaba@gluster.com>
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
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