On 2019/7/27 23:44, Chao Yu wrote:
> From: Chao Yu <yuch...@huawei.com>
>
> Support 'defrag_file' sub command to trigger file based defragment via
> ioctl in f2fs.
>
> Signed-off-by: Chao Yu <yuch...@huawei.com>
> ---
> v2:
> - remove unneeded debug info.
> - fix compile warning.
Sorry I sent the old one...
I add -v option, but w/o implement the details, because I just see generic/018
want this, also other filesystem utils have this option, not sure we should
remove this option... any thoughts?
"f2fs_io defrag_file [start] [length] [-v] [file_path]\n\n"
> tools/f2fs_io/f2fs_io.c | 41 +++++++++++++++++++++++++++++++++++++++++
> 1 file changed, 41 insertions(+)
>
> diff --git a/tools/f2fs_io/f2fs_io.c b/tools/f2fs_io/f2fs_io.c
> index f087da4..59ef8a7 100644
> --- a/tools/f2fs_io/f2fs_io.c
> +++ b/tools/f2fs_io/f2fs_io.c
> @@ -442,6 +442,46 @@ static void do_gc_urgent(int argc, char **argv, const
> struct cmd_desc *cmd)
> }
> }
>
> +#define defrag_file_desc "do defragment on file"
> +#define defrag_file_help \
> +"f2fs_io defrag_file [start] [length] [-v] [file_path]\n\n" \
> +" start : start offset of defragment region, unit: bytes\n" \
> +" length : bytes number of defragment region\n" \
> +" -v : be verbose\n" \
> +
> +static void do_defrag_file(int argc, char **argv, const struct cmd_desc *cmd)
> +{
> + struct f2fs_defragment df;
> + u64 len;
> + int ret, fd;
> +
> + if (argc != 5) {
> + fputs("Excess arguments\n\n", stderr);
> + fputs(cmd->cmd_help, stderr);
> + exit(1);
> + }
> +
> + df.start = atoll(argv[1]);
> + df.len = len = atoll(argv[2]);
> +
> + fd = open(argv[4], O_RDWR);
> + if (fd == -1) {
> + fputs("Open failed\n\n", stderr);
> + fputs(cmd->cmd_help, stderr);
> + exit(1);
> + }
> +printf("%lu, %lu\n", df.start, df.len);
> + ret = ioctl(fd, F2FS_IOC_DEFRAGMENT, &df);
> + if (ret < 0) {
> + perror("F2FS_IOC_DEFRAGMENT");
> + exit(1);
> + }
> + printf("defrag %s in region[%lu, %lu]\n", argv[3],
> + df.start, df.start + len);
> + exit(0);
> +}
> +
> +
> #define CMD_HIDDEN 0x0001
> #define CMD(name) { #name, do_##name, name##_desc, name##_help, 0 }
> #define _CMD(name) { #name, do_##name, NULL, NULL, CMD_HIDDEN }
> @@ -456,6 +496,7 @@ const struct cmd_desc cmd_list[] = {
> CMD(read),
> CMD(fiemap),
> CMD(gc_urgent),
> + CMD(defrag_file),
> { NULL, NULL, NULL, NULL, 0 }
> };
>
>
_______________________________________________
Linux-f2fs-devel mailing list
Linux-f2fs-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel
