diff options
Diffstat (limited to 'disable_writeback_workaround.patch')
| -rw-r--r-- | disable_writeback_workaround.patch | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/disable_writeback_workaround.patch b/disable_writeback_workaround.patch new file mode 100644 index 000000000000..57e51da914d4 --- /dev/null +++ b/disable_writeback_workaround.patch @@ -0,0 +1,69 @@ +diff -rupN WoeUSB-3.3.0/src/woeusb WoeUSB-3.3.0-fix/src/woeusb +--- WoeUSB-3.3.0/src/woeusb 2019-03-26 03:34:51.000000000 +0100 ++++ WoeUSB-3.3.0-fix/src/woeusb 2019-08-03 09:10:10.553378730 +0200 +@@ -308,9 +308,6 @@ init(){ + + current_state=copying-filesystem + +- workaround_linux_make_writeback_buffering_not_suck \ +- apply +- + copy_filesystem_files \ + "${source_fs_mountpoint}" \ + "${target_fs_mountpoint}" \ +@@ -1650,41 +1647,6 @@ workaround_support_windows_7_uefi_boot() + > "${efi_boot_directory}/bootx64.efi" + }; declare -fr workaround_support_windows_7_uefi_boot + +-## Currently WoeUSB indirectly causes severely unresponsive system on 64-bit architecture with large primary memory during file copy process due to a flaw of the writeback buffer size handling in Linux kernel, workaround it before it is fixed +-## Refer: +-## - System lagging while copying data · Issue #113 · slacka/WoeUSB <https://github.com/slacka/WoeUSB/issues/113> +-## - The pernicious USB-stick stall problem [LWN.net] <https://lwn.net/Articles/572911/> +-workaround_linux_make_writeback_buffering_not_suck(){ +- util_check_function_parameters_quantity 1 "${#}" +- local -r mode="${1}" +- +- local -ir VM_DIRTY_BACKGROUND_BYTES=$((16*1024*1024)) # 16MiB +- local -ir VM_DIRTY_BYTES=$((48*1024*1024)) # 48MiB +- +- case "${mode}" in +- apply) +- echo_with_color \ +- yellow \ +- 'Applying workaround to prevent 64-bit systems with big primary memory from being unresponsive during copying files.' +- echo "${VM_DIRTY_BACKGROUND_BYTES}" > /proc/sys/vm/dirty_background_bytes +- echo "${VM_DIRTY_BYTES}" > /proc/sys/vm/dirty_bytes +- ;; +- reset) +- echo_with_color \ +- yellow \ +- 'Resetting workaround to prevent 64-bit systems with big primary memory from being unresponsive during copying files.' +- echo 0 > /proc/sys/vm/dirty_background_bytes +- echo 0 > /proc/sys/vm/dirty_bytes +- ;; +- *) +- printf_with_color \ +- red \ +- 'Fatal: %s: Unexpected *mode* encountered, please report bug.\n' \ +- "${FUNCNAME[0]}" +- ;; +- esac +-}; declare -fr workaround_linux_make_writeback_buffering_not_suck +- + install_legacy_pc_bootloader_grub(){ + util_check_function_parameters_quantity 3 "${#}" + local -r target_fs_mountpoint="${1}"; shift 1 +@@ -1836,13 +1798,6 @@ trap_exit(){ + off \ + "${global_only_for_gui}" + +- case "${current_state}" in +- copying-filesystem|finished) +- workaround_linux_make_writeback_buffering_not_suck \ +- reset +- ;; +- esac +- + if util_is_parameter_set_and_not_empty \ + source_fs_mountpoint; then + if ! cleanup_mountpoint \ |