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.
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 }
};
--
2.22.0
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