linux59-tkg: Add back fsync patchset.

Thanks to @terencode for his restore futex_key patch 🐸 ❤️

linux59-tkg/PKGBUILD

@@ -45,7 +45,7 @@ else
 fi
 pkgname=("${pkgbase}" "${pkgbase}-headers")
 pkgver="${_basekernel}"."${_sub}"
-pkgrel=2
+pkgrel=3
 pkgdesc='Linux-tkg'
 arch=('x86_64') # no i686 in here
 url="http://www.kernel.org/"
@@ -74,7 +74,7 @@ source=("https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-${_basekernel}.tar.x
         #0005-v5.8_undead-pds099o.patch
         0005-glitched-pds.patch
         0006-add-acs-overrides_iommu.patch
-        #0007-v5.8-fsync.patch
+        0007-v5.9-fsync.patch
         #0008-5.8-bcachefs.patch
         0009-glitched-ondemand-bmq.patch
         0009-glitched-bmq.patch
@@ -94,6 +94,7 @@ sha256sums=('3239a4ee1250bf2048be988cc8cb46c487b2c8a0de5b1b032d38394d5c6b1a06'
             '7058e57fd68367b029adc77f2a82928f1433daaf02c8c279cb2d13556c8804d7'
             'fca63d15ca4502aebd73e76d7499b243d2c03db71ff5ab0bf5cf268b2e576320'
             '19661ec0d39f9663452b34433214c755179894528bf73a42f6ba52ccf572832a'
+            'edb93a2bef291c16dbcbf8d11f7a12febb77b2d193dd4be0dac988de91e0d97c'
             '9fad4a40449e09522899955762c8928ae17f4cdaa16e01239fd12592e9d58177'
             'a557b342111849a5f920bbe1c129f3ff1fc1eff62c6bd6685e0972fc88e39911'
             '88c7e308e474c845e0cc09e09bd223fc39876eca757abf6d6c3b8321f49ce1f1'

linux59-tkg/README.md

@@ -24,6 +24,7 @@ You can optionally enable support for it at the beginning of the PKGBUILD file.
 - using vm.max_map_count=524288 by default
 - cherry-picked clear linux patches
 - **optional** overrides for missing ACS capabilities
+- **optional** Fsync support (proton)
 
 ## Install procedure
 

linux59-tkg/customization.cfg

@@ -101,6 +101,9 @@ _acs_override=""
 # Set to "true" to add back missing symbol for AES-NI/AVX support on ZFS - https://github.com/NixOS/nixpkgs/blob/master/pkgs/os-specific/linux/kernel/export_kernel_fpu_functions.patch - Kernel default is "false"
 _zfsfix="true"
 
+# Set to "true" to enable support for fsync, an experimental replacement for esync found in Valve Proton 4.11+ - https://steamcommunity.com/games/221410/announcements/detail/2957094910196249305
+_fsync=""
+
 # A selection of patches from Zen/Liquorix kernel and additional tweaks for a better gaming experience (ZENIFY) - Default is "true"
 _zenify="true"
 

linux59-tkg/linux59-tkg-config/prepare

@@ -746,16 +746,16 @@ _tkg_srcprep() {
   #fi
 
   # fsync support
-  #if [ -z "$_fsync" ]; then
-  #  plain ""
-  #  plain "Enable support for fsync, an experimental replacement for esync in Valve Proton 4.11+"
-  #  plain "https://steamcommunity.com/games/221410/announcements/detail/2957094910196249305"
-  #  read -rp "`echo $'    > N/y : '`" CONDITION9;
-  #fi
-  #if [[ "$CONDITION9" =~ [yY] ]] || [ "$_fsync" = "true" ]; then
-  #  msg2 "Patching Fsync support"
-  #  patch -Np1 -i "$srcdir"/0007-v5.8-fsync.patch
-  #fi
+  if [ -z "$_fsync" ]; then
+    plain ""
+    plain "Enable support for fsync, an experimental replacement for esync in Valve Proton 4.11+"
+    plain "https://steamcommunity.com/games/221410/announcements/detail/2957094910196249305"
+    read -rp "`echo $'    > N/y : '`" CONDITION9;
+  fi
+  if [[ "$CONDITION9" =~ [yY] ]] || [ "$_fsync" = "true" ]; then
+    msg2 "Patching Fsync support"
+    patch -Np1 -i "$srcdir"/0007-v5.9-fsync.patch
+  fi
 
   # ZFS fix
   if [ -z "$_zfsfix" ]; then