On 08/06, Chao Yu wrote:
> 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?
Ah, we don't need this option.
>
> "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 }
> > };
> >
> >
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