NFSD_FILE_CACHE_UP
if (test_bit(NFSD_FILE_CACHE_UP, &nfsd_file_flags))
if (test_bit(NFSD_FILE_CACHE_UP, &nfsd_file_flags) == 1) {
if (test_and_set_bit(NFSD_FILE_CACHE_UP, &nfsd_file_flags) == 1)
clear_bit(NFSD_FILE_CACHE_UP, &nfsd_file_flags);
if (test_bit(NFSD_FILE_CACHE_UP, &nfsd_file_flags) == 1)
if (test_and_clear_bit(NFSD_FILE_CACHE_UP, &nfsd_file_flags) == 0)