[LTP] [PATCH v3 0/6] Tests for readahead() and fadvise() on overlayfs
Fri Nov 2 11:32:59 CET 2018
On Thu, Oct 11, 2018 at 2:34 AM Amir Goldstein <firstname.lastname@example.org> wrote:
The affected kernel code as well as fix commits are now in v4.19.
Pushed rebased branch to:
Also, there is an unrelated (besides the word "fadvise") cleanup branch
that converts the fadvise tests to newlib.
> 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.
> 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/readahead01: Convert to newlib
> syscalls/readahead02: Convert to newlib and cleanup
> syscalls/readahead02: abort test if readahead syscall fails
> syscalls/readahead02: test readahead() on an overlayfs file
> syscalls/readahead02: test readahead using posix_fadvise()
> syscalls/readahead02: fail test if readahead did not use any cache
> .../kernel/syscalls/readahead/readahead01.c | 119 ++----
> .../kernel/syscalls/readahead/readahead02.c | 339 +++++++++---------
> 2 files changed, 198 insertions(+), 260 deletions(-)
More information about the ltp