On 2020/5/2 8:29, Jaegeuk Kim wrote:
> Signed-off-by: Jaegeuk Kim <jaeg...@kernel.org>
> ---
> tools/f2fs_io/f2fs_io.c | 25 +++++++++++++++++++++++++
> 1 file changed, 25 insertions(+)
>
> diff --git a/tools/f2fs_io/f2fs_io.c b/tools/f2fs_io/f2fs_io.c
> index c1edef1..c84b6ab 100644
> --- a/tools/f2fs_io/f2fs_io.c
> +++ b/tools/f2fs_io/f2fs_io.c
> @@ -130,6 +130,30 @@ static void full_write(int fd, const void *buf, size_t
> count)
> }
> }
>
> +#define fsync_desc "fsync"
> +#define fsync_help \
> +"f2fs_io fsync [file]\n\n" \
What about supporting fdatasync via an additional argument here?
> +"fsync given the file\n" \
> +
> +static void do_fsync(int argc, char **argv, const struct cmd_desc *cmd)
> +{
> + int fd;
> +
> + if (argc != 2) {
> + fputs("Excess arguments\n\n", stderr);
> + fputs(cmd->cmd_help, stderr);
> + exit(1);
> + }
> +
> + fd = xopen(argv[1], O_WRONLY, 0);
> +
> + if (fsync(fd) != 0)
> + die_errno("fsync failed");
> +
> + printf("fsync a file\n");
> + exit(0);
> +}
> +
> #define set_verity_desc "Set fs-verity"
> #define set_verity_help \
> "f2fs_io set_verity [file]\n\n" \
> @@ -780,6 +804,7 @@ static void do_reserve_cblocks(int argc, char **argv,
> const struct cmd_desc *cmd
> static void do_help(int argc, char **argv, const struct cmd_desc *cmd);
> const struct cmd_desc cmd_list[] = {
> _CMD(help),
> + CMD(fsync),
> CMD(set_verity),
> CMD(getflags),
> CMD(setflags),
>
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