BREAKING CHANGE:
支持mnt容器及增强对外变更:
1.clone 支持CLONE_NEWNS
2.增加”/proc/[pid]/container/mnt" 用于查询容器信息
3.新增chroot接口

Close #I6APW2
Signed-off-by: Nzhushengle <zhushengle@huawei.com>
Change-Id: I5e8843a0f59bb5b0e6a66a6810dc552e8184a03e

Signed-off-by: Nzhangdengyu <zhangdengyu2@huawei.com>

Signed-off-by: Nlihongjin <lihongjin1@huawei.com>
Change-Id: I13163f2e4d1e4b6e6c6bedaf9d4e705544df926b

re #I4STTF
Signed-off-by: NKiita <zhanyan@huawei.com>
Change-Id: Ifec720eb5dd7aef8283875048d23b6a3d66b5436

【背景】
3.1 代码检视过程中有一些问题需要修复

【修改方案】
修改了失效的文档链接,更改了一些非可执行文件的权限

【影响】
对现有的产品编译不会有影响。
Signed-off-by: Nyinjiaming <yinjiaming@huawei.com>
Change-Id: If87ac9a3e17ba679f4712552f5a89cc13349287e

【背景】A核代码静态告警定期清理

【修改方案】
1，根据codex等工具分析结果，进行必要的规范等问题修改

【影响】
对现有的产品编译不会有影响。

re #I4I0O8
Signed-off-by: Nwangchen <253227059@qq.com>

【背景】增加内核epoll系统调用适配musl接口并增加测试用例

【修改方案】
1, 删除musl仓的porting
2，内核实现epoll对应接口及注册系统调用
3，testsuit目录添加对应的用例

【影响】
对现有的产品编译不会有影响。

re #I4FXPT
Signed-off-by: Nwangchen <253227059@qq.com>

Change-Id: Ia97ea49067aa1ff47b8c1c83675ac75e75d25955

优化包括：
1. 提供VnodeLookupFullpath接口，如果路径是规范化的路径，则调用此接口可减少一次vfs_normalizepath接口的调用;
2. fatfs open钩子函数FIL和buffer同时malloc，减少一次malloc调用，同时去除不必要的数据写回;
3. 其他小细节的优化。

Close #I4E0CT
Signed-off-by: NFar <yesiyuan2@huawei.com>

1, change the owner of page to vnode
2, save the file path in vnode

close: #I44TBS
Signed-off-by: NLeon Chan <chenwei26@huawei.com>

Signed-off-by: Njason_gitee <yangjie140@huawei.com>

【背景】定期A核代码告警清零。

【修改方案】
根据工具扫描结果，对代码告警进行更改。

【影响】
对现有的产品编译不会有影响。

re #I4378T
Signed-off-by: Nwangchen <253227059@qq.com>

write "clear pathcahe" to clear pathcaches and vnodes
write "clear pagecache" to clear pagecaches
write "clear all" to clear both pathcaches and pagechaches
the cache in use will not be cleared

close: #I3XLPH
Signed-off-by: Nmucor <mucorwang@gmail.com>

add /proc/fs_cache to display vnode, path cache, page cache.
also change some bad virable name

close: #I3WWBD
Signed-off-by: Nmucor <mucorwang@gmail.com>

add /proc/fs_cache to display vnode, path cache, page cache.
also change some bad virable name

close: #I3WESD
Signed-off-by: Nmucor <mucorwang@gmail.com>

1.remove redundant headfile in kernel, such as:
  compiler.h;debug.h;automount.h;inode.h;syslog.h;net.h;
2.split fs.h to file.h and driver.h
3.move vnode.h and path_cache.h to vfs/include
4.remove redundant interface and defines

close: #I3RTNR
Signed-off-by: Nmucor <mucorwang@gmail.com>

Change-Id: I052d930d54e63179b17b77f02c107a015f3cfc3f

1. Bcache block with high mem address is after lower mem address in RCU list when initing bcache.
2. Format will clear the bcache before writing the FAT.
3. The fatfs_readdir use the bcache writing block to reduce the chance of data switching out
4. Add performance analysing macron switch

Change-Id: I8fbc48418509d2e660d725d2c265266e931c26f8

Feature or Bugfix:Feature
Binary Source:Huawei
PrivateCode(Yes/No):Yes

Change-Id: I175d2648bc6f9078c34de2c0a5c93fda10b86c47
ChangeID:13306388

Change-Id: Ia6c1f6302407a707b3ec9b805f4c92d8a7970b86