diff --git a/pkgs/os-specific/linux/kernel/patches.nix b/pkgs/os-specific/linux/kernel/patches.nix
index 42a6e0d037b9..ec114f93e83f 100644
--- a/pkgs/os-specific/linux/kernel/patches.nix
+++ b/pkgs/os-specific/linux/kernel/patches.nix
@@ -175,12 +175,12 @@ rec {
       };
     };
 
-  p9_caching_4_4 = rec
+  p9_caching_4_9 = rec
     { name = "9p-caching.patch";
       patch = fetchpatch {
         inherit name;
-        url = https://github.com/edolstra/linux/commit/d522582553368b9564e2d88a8d7b1d469bf98c65.patch;
-        sha256 = "01h7461pdgavd6ghd6w9wg136hkaca0mrmmzhy6s3phksksimbc2";
+        url = https://github.com/edolstra/linux/commit/7e20254412c780a2102761fee92cb1d32ceeaefd.patch;
+        sha256 = "001kf1sdy6pirn8sqnfgbfahvwwkc7n7vr5i8fy2n74xph1kks5a";
       };
     };
 
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 8d2b4cf52014..ac59998dde4e 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -11243,7 +11243,6 @@ in
     kernelPatches =
       [ kernelPatches.bridge_stp_helper
         kernelPatches.cpu-cgroup-v2."4.4"
-        kernelPatches.p9_caching_4_4
       ]
       ++ lib.optionals ((platform.kernelArch or null) == "mips")
       [ kernelPatches.mips_fpureg_emu
@@ -11260,6 +11259,7 @@ in
         # !!! 4.7 patch doesn't apply, 4.9 patch not up yet, will keep checking
         # kernelPatches.cpu-cgroup-v2."4.7"
         kernelPatches.modinst_arg_list_too_long
+        kernelPatches.p9_caching_4_9
       ]
       ++ lib.optionals ((platform.kernelArch or null) == "mips")
       [ kernelPatches.mips_fpureg_emu
@@ -11272,6 +11272,7 @@ in
     kernelPatches = [
       kernelPatches.bridge_stp_helper
       kernelPatches.modinst_arg_list_too_long
+      kernelPatches.p9_caching_4_9
     ] ++ lib.optionals ((platform.kernelArch or null) == "mips") [
       kernelPatches.mips_fpureg_emu
       kernelPatches.mips_fpu_sigill