The following changes since commit d86ac3e9f4c703b7d7c9add96e69f2d02affdc65: Merge branch 'trim-support' of https://github.com/ankit-sam/fio (2023-03-27 13:21:25 -0600) are available in the Git repository at: git://git.kernel.dk/fio.git master for you to fetch changes up to 638689b15af35bd746f9114a3e8895e7a983ed83: Only expose fadvise_hint=noreuse if supported (2023-03-31 12:52:01 -0600) ---------------------------------------------------------------- Jens Axboe (1): Only expose fadvise_hint=noreuse if supported Yuanchu Xie (2): fio: add support for POSIX_FADV_NOREUSE docs: add noreuse fadvise_hint option HOWTO.rst | 5 +++++ fio.1 | 5 +++++ fio.h | 1 + ioengines.c | 4 ++++ options.c | 7 +++++++ 5 files changed, 22 insertions(+) --- Diff of recent changes: diff --git a/HOWTO.rst b/HOWTO.rst index 5240f9da..cb0f9834 100644 --- a/HOWTO.rst +++ b/HOWTO.rst @@ -1308,6 +1308,11 @@ I/O type **random** Advise using **FADV_RANDOM**. + **noreuse** + Advise using **FADV_NOREUSE**. This may be a no-op on older Linux + kernels. Since Linux 6.3, it provides a hint to the LRU algorithm. + See the :manpage:`posix_fadvise(2)` man page. + .. option:: write_hint=str Use :manpage:`fcntl(2)` to advise the kernel what life time to expect diff --git a/fio.1 b/fio.1 index e2db3a3f..311b16d8 100644 --- a/fio.1 +++ b/fio.1 @@ -1098,6 +1098,11 @@ Advise using FADV_SEQUENTIAL. .TP .B random Advise using FADV_RANDOM. +.TP +.B noreuse +Advise using FADV_NOREUSE. This may be a no-op on older Linux +kernels. Since Linux 6.3, it provides a hint to the LRU algorithm. +See the \fBposix_fadvise\fR\|(2) man page. .RE .RE .TP diff --git a/fio.h b/fio.h index 32535517..f2acd430 100644 --- a/fio.h +++ b/fio.h @@ -163,6 +163,7 @@ enum { F_ADV_TYPE, F_ADV_RANDOM, F_ADV_SEQUENTIAL, + F_ADV_NOREUSE, }; /* diff --git a/ioengines.c b/ioengines.c index e2316ee4..742f97dd 100644 --- a/ioengines.c +++ b/ioengines.c @@ -565,6 +565,10 @@ int td_io_open_file(struct thread_data *td, struct fio_file *f) flags = POSIX_FADV_RANDOM; else if (td->o.fadvise_hint == F_ADV_SEQUENTIAL) flags = POSIX_FADV_SEQUENTIAL; +#ifdef POSIX_FADV_NOREUSE + else if (td->o.fadvise_hint == F_ADV_NOREUSE) + flags = POSIX_FADV_NOREUSE; +#endif else { log_err("fio: unknown fadvise type %d\n", td->o.fadvise_hint); diff --git a/options.c b/options.c index 18857795..440bff37 100644 --- a/options.c +++ b/options.c @@ -4,6 +4,7 @@ #include <ctype.h> #include <string.h> #include <assert.h> +#include <fcntl.h> #include <sys/stat.h> #include <netinet/in.h> @@ -2740,6 +2741,12 @@ struct fio_option fio_options[FIO_MAX_OPTS] = { .oval = F_ADV_SEQUENTIAL, .help = "Advise using FADV_SEQUENTIAL", }, +#ifdef POSIX_FADV_NOREUSE + { .ival = "noreuse", + .oval = F_ADV_NOREUSE, + .help = "Advise using FADV_NOREUSE", + }, +#endif }, .help = "Use fadvise() to advise the kernel on IO pattern", .def = "1",
