"system has been remounted R/W; reflash device to reen...

L版本OTA升级遇到error："system has been remounted R/W; reflash device to reenable OTA updates"
[DESCRIPTION]
L版本；如果有在bootable/recovery/目录下code中添加ensure_path_mounted(“/system”);
或者是在recovery mode下执行root integrity check之后，导致OTA升级失败，而且last_log中有如下error：
script aborted: system has been remounted R/W; reflash device to reenable OTA updates
system has been remounted R/W; reflash device to reenable OTA updates
[SOLUTION]
可以尝试在/bootable/recovery/roots.cpp中作如下修改：(蓝色为添加部分)
int ensure_path_mounted(const char* path) {
} else if (strcmp(v->fs_type, "ext4") == 0 ||
strcmp(v->fs_type, "vfat") == 0) {
if (strcmp(v->mount_point, "/system") == 0)//add
result = mount(v->device, v->mount_point, v->fs_type,MS_NOATIME | MS_NODEV |
MS_NODIRATIME | MS_RDONLY, "");//add
else //add
result = mount(v->device, v->mount_point, v->fs_type,
MS_NOATIME | MS_NODEV | MS_NODIRATIME, "");
如果问题还是不能解决，请提eservice给Mediatek，谢谢！