From mboxrd@z Thu Jan 1 00:00:00 1970 From: Amir Goldstein Date: Wed, 28 Nov 2018 18:46:39 +0200 Subject: [LTP] [PATCH v4 0/6] Tests for readahead() and fadvise() on overlayfs Message-ID: <20181128164645.783-1-amir73il@gmail.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: ltp@lists.linux.it Cyril, The following series adds test covergae for readahead() syscall over overlayfs file and adds test coverage for a specific posix_fadvise() syscall advice (POSIX_FADV_WILLNEED). So far, the posix_fadvise syscall tests in LTP only test for error conditions, but not functionality. The functionality of the advice POSIX_FADV_WILLNEED is identical to readahead() and since kernel commit 3d8f7615319b ("vfs: implement readahead(2) using POSIX_FADV_WILLNEED"), the implementations are also bound together. To add test coverage of the advice POSIX_FADV_WILLNEED, I decided not to duplicate the readahead() functional test and add test cases to readahead02 that use the POSIX_FADV_WILLNEED implementation. Thanks, Amir. Changed since v3: - Get rid of check_ret() helper - Use tst_timer helpers instead of gettimeofday Changes since v2: - Runtime check for readahead/fadvise support - Abort test case immediately if syscall fail Changes since v1: - Fix bugs in loop invocation of test (i.e. -i 2) - Address review comments from Jan Stancek - Make cached_max a global maximum over all test cases - Improve reliability of overlayfs readahead test case failure Amir Goldstein (6): syscalls/readahead02: Convert to newlib and cleanup syscalls/readahead02: abort test if readahead syscall fails syscalls/readahead02: fail test if readahead did not use any cache syscalls/readahead02: Convert to tst_timer helpers syscalls/readahead02: test readahead() on an overlayfs file syscalls/readahead02: test readahead using posix_fadvise() .../kernel/syscalls/readahead/readahead02.c | 355 ++++++++---------- 1 file changed, 164 insertions(+), 191 deletions(-) -- 2.17.1