On Wed, Mar 06, 2013 at 11:05:04PM -0500, CAI Qian wrote: > Bisecting indicated that this commit, > 1998cc048901109a29924380b8e91bc049b32951 > mm: make madvise(MADV_WILLNEED) support swap file prefetch > > Caused an LTP test failure, > http://goo.gl/1FVPy > > madvise02 1 TPASS : failed as expected: TEST_ERRNO=EINVAL(22): Invalid argument > madvise02 2 TPASS : failed as expected: TEST_ERRNO=EINVAL(22): Invalid argument > madvise02 3 TPASS : failed as expected: TEST_ERRNO=EINVAL(22): Invalid argument > madvise02 4 TPASS : failed as expected: TEST_ERRNO=ENOMEM(12): Cannot allocate memory > madvise02 5 TFAIL : madvise succeeded unexpectedly > > While it passed without the above commit > madvise02 1 TPASS : failed as expected: TEST_ERRNO=EINVAL(22): Invalid argument > madvise02 2 TPASS : failed as expected: TEST_ERRNO=EINVAL(22): Invalid argument > madvise02 3 TPASS : failed as expected: TEST_ERRNO=EINVAL(22): Invalid argument > madvise02 4 TPASS : failed as expected: TEST_ERRNO=ENOMEM(12): Cannot allocate memory > madvise02 5 TPASS : failed as expected: TEST_ERRNO=EBADF(9): Bad file descriptor I thought this is expected behavior. madvise(MADV_WILLNEED) to anonymous memory doesn't return -EBADF now, as now we support swap prefretch. Thanks, Shaohua -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>