linux/common-config: Disable bcachefs

nixos/doc/manual/release-notes/rl-2511.section.md

@@ -340,7 +340,7 @@
 
 - Due to [deprecation of gnome-session X11 support](https://blogs.gnome.org/alatiera/2025/06/08/the-x11-session-removal/), `services.desktopManager.pantheon` now defaults to pantheon-wayland session. The X11 session has been removed, see [this issue](https://github.com/elementary/session-settings/issues/91) for details.
 
-- `bcachefs` file systems will now use the out-of-tree module for supported kernels. The in-tree module is unmaintained and users are strongly recommended to switch to kernels that support the out-of-tree module.
+- `bcachefs` file systems will now use the out-of-tree module for supported kernels. The in-tree module has been removed, and users will need to switch to kernels that support the out-of-tree module.
 
 - `services.gitea` supports sending notifications with sendmail again. To do this, activate the parameter `services.gitea.mailerUseSendmail` and configure SMTP server.
 

nixos/modules/tasks/filesystems/bcachefs.nix

@@ -242,14 +242,6 @@ in
           }
         ];
 
-        warnings = lib.mkIf cfg.modulePackage.meta.broken [
-          ''
-            Using unmaintained in-tree bcachefs kernel module. This
-            will be removed in 26.05. Please use a kernel supported
-            by the out-of-tree module package.
-          ''
-        ];
-
         # Bcachefs upstream recommends using the latest kernel
         boot.kernelPackages = lib.mkDefault pkgs.linuxPackages_latest;
 
@@ -257,9 +249,7 @@ in
         system.fsPackages = [ cfg.package ];
         services.udev.packages = [ cfg.package ];
 
-        boot.extraModulePackages = lib.optionals (!cfg.modulePackage.meta.broken) [
-          cfg.modulePackage
-        ];
+        boot.extraModulePackages = [ cfg.modulePackage ];
 
         systemd = {
           packages = [ cfg.package ];

pkgs/os-specific/linux/kernel/common-config.nix

@@ -714,8 +714,8 @@ let
 
       BTRFS_FS_POSIX_ACL = yes;
 
-      BCACHEFS_QUOTA = whenBetween "6.7" "6.18" (option yes);
-      BCACHEFS_POSIX_ACL = whenBetween "6.7" "6.18" (option yes);
+      # Provided by external module
+      BCACHEFS_FS = whenBetween "6.7" "6.18" no;
 
       UBIFS_FS_ADVANCED_COMPR = option yes;