IssueNo:#I3EOI0

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

Change-Id: Ie1029c8fbc0c1b85c138663933118d2d148b7769

fs/driver/fs_blockproxy.c

@@ -227,7 +227,9 @@ int block_proxy(FAR const char *blkdev, int oflags)
   VnodeDrop();
 
   /* Block char device is no need for file mapping */
+#ifdef LOSCFG_KERNEL_VM
   (void)remove_mapping(chardev);
+#endif
 
   /* Free the allocate character driver name and return the open file
    * descriptor.

fs/inode/fs_files.c

@@ -507,7 +507,6 @@ int files_allocate(struct Vnode *vnode_ptr, int oflags, off_t pos, void *priv, i
 static int files_close_internal(int fd, LosProcessCB *processCB)
 {
   int ret = OK;
-  struct file *filep = NULL;
   struct filelist *list = NULL;
   struct files_struct *process_files = NULL;
 
@@ -544,15 +543,18 @@ static int files_close_internal(int fd, LosProcessCB *processCB)
 
   /* The filep->f_refcount may not be zero here, when the filep is shared in parent-child processes.
      so, upon closing the filep in current process, relevant region must be released immediately */
-
-  filep = &list->fl_files[fd];
+#ifdef LOSCFG_KERNEL_VM
+  struct file *filep = &list->fl_files[fd];
 
   OsVmmFileRegionFree(filep, processCB);
+#endif
 
   list->fl_files[fd].f_refcount--;
   if (list->fl_files[fd].f_refcount == 0)
     {
+#ifdef LOSCFG_KERNEL_VM
       dec_mapping_nolock(filep->f_mapping);
+#endif
       ret = _files_close(&list->fl_files[fd]);
       if (ret == OK)
         {

fs/vfs/fs_open.c

@@ -303,7 +303,9 @@ int fp_open(char *fullpath, int oflags, mode_t mode)
 
   /* we do not bother to handle the NULL scenario, if so, page-cache feature will not be used
    * when we do the file fault */
+#ifdef LOSCFG_KERNEL_VM
   add_mapping(filep, fullpath);
+#endif
 
   return fd;
 

fs/vfs/fs_unlink.c

@@ -140,7 +140,9 @@ int do_unlink(int dirfd, const char *pathname)
 
   VnodeFree(vnode);
   VnodeDrop();
+#ifdef LOSCFG_KERNEL_VM
   (void)remove_mapping(fullpath);
+#endif
   /* Successfully unlinked */
 
   free(fullpath);