find_readable_file
nf = find_readable_file(fp);
ret = find_readable_file(s->sc_file);
open_file = find_readable_file(CIFS_I(inode), FIND_FSUID_ONLY);
*ret_file = find_readable_file(cinode, FIND_ANY);
cfile = find_readable_file(cifs_i, FIND_ANY);
open_file = find_readable_file(CIFS_I(inode), FIND_FSUID_ONLY);