| #!/system/bin/sh |
| |
| # |
| # Copyright (C) 2019 The Android Open Source Project |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); |
| # you may not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| # |
| |
| # This script will run as an pre-checkpointing cleanup for mounting f2fs |
| # with checkpoint=disable, so that the first mount after the reboot will |
| # be faster. It is unnecessary to run if the device does not use userdata |
| # checkpointing on F2FS. |
| |
| # TARGET_SLOT="${1}" |
| STATUS_FD="${2}" |
| DIRTY_SEGMENTS_THRESHOLD=100 |
| |
| SLEEP=5 |
| |
| NAME=`while read dev dir type opt; do |
| if [ /data = ${dir} -a f2fs = ${type} ]; then |
| echo ${dev##*/} |
| break |
| fi |
| done < /proc/mounts` |
| if [ -z "${NAME}" ]; then |
| exit 0 |
| fi |
| log -pi -t checkpoint_gc Turning on GC for ${NAME} |
| echo 1 > /sys/fs/f2fs/${NAME}/gc_urgent || exit 1 |
| |
| read DIRTY_SEGMENTS_START < /sys/fs/f2fs/${NAME}/dirty_segments |
| DIRTY_SEGMENTS=${DIRTY_SEGMENTS_START} |
| TODO_SEGMENTS=$((${DIRTY_SEGMENTS_START}-${DIRTY_SEGMENTS_THRESHOLD})) |
| echo $DIRTY_SEGMENTS_START |
| while [ ${DIRTY_SEGMENTS} -gt ${DIRTY_SEGMENTS_THRESHOLD} ]; do |
| echo $DIRTY_SEGMENTS |
| PROGRESS=`echo "(${DIRTY_SEGMENTS_START}-${DIRTY_SEGMENTS})/${TODO_SEGMENTS}"|bc -l` |
| if [[ $PROGRESS == -* ]]; then |
| PROGRESS=0 |
| fi |
| print -u${STATUS_FD} "global_progress ${PROGRESS}" |
| read DIRTY_SEGMENTS < /sys/fs/f2fs/${NAME}/dirty_segments |
| sleep ${SLEEP} |
| done |
| |
| log -pi -t checkpoint_gc Turning off GC for ${NAME} |
| echo 0 > /sys/fs/f2fs/${NAME}/gc_urgent |
| sync |
| |
| print -u${STATUS_FD} "global_progress 1.0" |
| exit 0 |