Merge pull request #33505 from peterhoeg/f/wbt

kernel: enable writeback throttling to avoid IO queues filling up
2018-01-08 11:23:00 +01:00
parent e5d9d61d65 f674cb5ecc
commit 424aa1a681
1 changed files with 9 additions and 0 deletions
--- a/pkgs/os-specific/linux/kernel/common-config.nix
+++ b/pkgs/os-specific/linux/kernel/common-config.nix
@@ -370,6 +370,15 @@ with stdenv.lib;
    MICROCODE_AMD_EARLY y
  ''}

+  ${optionalString (versionAtLeast version "4.10") ''
+    # Write Back Throttling
+    # https://lwn.net/Articles/682582/
+    # https://bugzilla.kernel.org/show_bug.cgi?id=12309#c655
+    BLK_WBT y
+    BLK_WBT_SQ y
+    BLK_WBT_MQ y
+  ''}
+
  # Misc. options.
  8139TOO_8129 y
  8139TOO_PIO n # PIO is slower