revert-without-query

revert-without-query is a variable defined in `files.el'.
Its value is

nil

Documentation:
Specify which files should be reverted without query.
The value is a list of regular expressions.
If the file name matches one of these regular expressions,
then `revert-buffer' reverts the file without querying
if the file has changed on disk and you have not edited the buffer.

You can customize this variable.