!71 文件系统支持sd卡热插拔

Merge pull request !71 from 野生毛霉君/master

fs/mount/fs_mount.c

@@ -280,6 +280,7 @@ int mount(const char *source, const char *target,
     }
   mnt->vnodeBeCovered->flag |= VNODE_FLAG_MOUNT_ORIGIN;
   mnt->vnodeCovered->flag |= VNODE_FLAG_MOUNT_NEW;
+  mnt->vnodeDev = device;
   mnt->ops = mops;
   if (target && (strlen(target) != 0))
     {

fs/vfs/include/file.h

@@ -122,9 +122,7 @@ struct file_operations_vfs
   int     (*mmap)(struct file* filep, struct VmMapRegion *region);
   /* The two structures need not be common after this point */
 
-#ifndef CONFIG_DISABLE_POLL
   int     (*poll)(struct file *filep, poll_table *fds);
-#endif
   int     (*stat)(struct file *filep, struct stat* st);
   int     (*fallocate)(struct file* filep, int mode, off_t offset, off_t len);
   int     (*fallocate64)(struct file *filep, int mode, off64_t offset, off64_t len);