[Backport release-24.05] linuxPackages.openafs: Patch for Linux kerne…

…l 6.12 (#361600)

pkgs/servers/openafs/1.8/module.nix

@@ -20,17 +20,32 @@ let
   modDestDir = "$out/lib/modules/${kernel.modDirVersion}/extra/openafs";
   kernelBuildDir = "${kernel.dev}/lib/modules/${kernel.modDirVersion}/build";
 
-  fetchBase64Patch = args: (fetchpatch args).overrideAttrs (o: {
-    postFetch = "mv $out p; base64 -d p > $out; " + o.postFetch;
-  });
-
 in
 stdenv.mkDerivation {
   pname = "openafs";
   version = "${version}-${kernel.modDirVersion}";
   inherit src;
 
-  patches = [ ];
+  patches = [
+    # Linux: Define Clear/Set PageError macros as NOPs
+    (fetchpatch {
+      url = "https://gerrit.openafs.org/changes/15964/revisions/917d071a1b3c3e23c984ca8e5501ddccd62a01b6/patch";
+      decode = "base64 -d";
+      hash = "sha256-WqAHRN1YZj7Cz4X4iF1K3DJC1h8nXlnA9gveClL3KHc=";
+    })
+    # Linux: Refactor afs_linux_write_begin() variants
+    (fetchpatch {
+      url = "https://gerrit.openafs.org/changes/15965/revisions/c955b666b904b96620df10328a9a37c2fb5f2ed6/patch";
+      decode = "base64 -d";
+      hash = "sha256-U2W+8YrD1K7Pb/Jq08uBcuPnGkVvcSyTpwaWWcTbq0w=";
+    })
+    # Linux: Use folios for aops->write_begin/end
+    (fetchpatch {
+      url = "https://gerrit.openafs.org/changes/15966/revisions/d1706bdc5080b86b1876d10f062c369e8d898188/patch";
+      decode = "base64 -d";
+      hash = "sha256-jY+r9LO/4g6K9J1stxNCa38nyr1/J3beOhG9YilEbzg=";
+    })
+  ];
 
   nativeBuildInputs = [ autoconf automake flex libtool_2 perl which bison ]
     ++ kernel.moduleBuildDependencies;