From 70df77c1abd92fccf0c5594f613f3e375c71c2b8 Mon Sep 17 00:00:00 2001
From: "Richard W.M. Jones" <rjones@redhat.com>
Date: Sat, 31 May 2025 08:12:32 +0100
Subject: [PATCH] cacheextents: Mark this filter as deprecated

We will remove it in nbdkit 1.46.

Its usage was removed from virt-v2v because we found that it did not
do anything:
https://github.com/libguestfs/virt-v2v/commit/48c4ce8e6cf6f1c390a48245ef0f99233f80cfe8

(cherry picked from commit 9717c47999fb2f56c3569cf1cdd4d0c160f866c1)
---
 filters/cacheextents/nbdkit-cacheextents-filter.pod | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/filters/cacheextents/nbdkit-cacheextents-filter.pod b/filters/cacheextents/nbdkit-cacheextents-filter.pod
index a2b2aa51..ebf0fbc5 100644
--- a/filters/cacheextents/nbdkit-cacheextents-filter.pod
+++ b/filters/cacheextents/nbdkit-cacheextents-filter.pod
@@ -6,6 +6,14 @@ nbdkit-cacheextents-filter - cache extents
 
  nbdkit --filter=cacheextents plugin
 
+=head1 DEPRECATED
+
+B<The cacheextents filter is deprecated in S<nbdkit E<ge> 1.43.10> and
+will be removed in S<nbdkit 1.46>>.  There is no direct replacement,
+but as the filter only worked for a narrow and unusual range of access
+patterns it is likely that it has no effect and you can just stop
+using it.
+
 =head1 DESCRIPTION
 
 C<nbdkit-cacheextents-filter> is a filter that caches the result of last
-- 
2.47.1