The name field of struct PathCache is not allocated. It should not try to free it by free(nc->name)

Close #I3NTH9

When fatfs_lookup find a vnode from hashlist, the field parent of vnode should be updated,
because the old parent may be reclaimed.

Close #I3NNFA

Change-Id: I3cc042b1fcd00022bc6ba48e2a05d70f351b83de

Close: I3NGBT
Change-Id: I70130c42061e51f5978b48befea66a5925386343

Bug: #I3NEVN
Test:

Close #I3NCDD

Close: I3MZZ6
Change-Id: Iab3919a2eebb44c82531a7fa7a2f688ec4bcc5a0

Close #I3MYP4

Change-Id: I533f4bacaf7e6dd500f5ac3ce4f5343b3b885988

Change-Id: I052d930d54e63179b17b77f02c107a015f3cfc3f

Change-Id: I44981eb9475feb4604ffe91244b4dff00f7d1548

Bug: #I2E08N
Test:

Change-Id: Ic9abc53cd0aafa1fd6272fab8191493c609ea995

Bug: Uninitialized parameter
Test:

Bug: #I3J1IC
Test: io test 1000 time

Change-Id: Ia956fd09f1bd734cd26ab631359c1e2131fe1e37

    buginfo: when try to umount a nfs node, it may casue stack overflow.

Change-Id: I7d96f74a770607c990ca5f51cb92fb2843a08d12

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

Change-Id: Ie48b96fe9c8ab036d7234b56a169d6668171a895

add SysFstatat64 SysInfo SysVfork SysGetrusage
fix up SysDup SysFcntl

Change-Id: If41228da62f406312858921e48e2210e04f16a16

Change-Id: Ia403ada9bbb688b81a6e188f591211d10349a7f0

Description:Delete VM to support only kernel mode.
Sig:liteos_a
Feature or Bugfix:Feature
Binary Source:No

Change-Id: Ie1029c8fbc0c1b85c138663933118d2d148b7769

Change-Id: I94175fa89a61f4f08d9f921203bedfc2dd9e53e4

Change-Id: Ie5c0cbca1e94c97ee2f511bf5ee3cdfb8c085a79

[Desc] 1, remove redundant code for O_APPEND flag in VfsJffs2Write; 2, fix bug for access freed memory in VfsJffs2Reclaim

Change-Id: Ibf8a1f352afa0c7ae608431a756ee58cec9bc262

Change-Id: I6f7c469e96da9cc89c5c33bf7a9afe19625e175f

Change-Id: Ic443742e125915f0e5332a338dedea5c40348928