@@ -144,6 +144,9 @@ Trigger precache extents
.TP
\fBmove_range\fR \fI[src_path] [dst_path] [src_start] [dst_start] [length]\fR
Move a range of data blocks from source file to destination file
+.TP
+\fBgc_range\fR \fI[sync_mode] [start in 4kb] [length in 4kb] [file]\fR
+Trigger gc to move data blocks from specified address range
.SH AUTHOR
This version of
.B f2fs_io
@@ -1419,6 +1419,40 @@ static void do_move_range(int argc, char **argv, const struct cmd_desc *cmd)
exit(0);
}
+#define gc_range_desc "trigger filesystem gc_range"
+#define gc_range_help "f2fs_io gc_range [sync_mode] [start] [length] [file_path]\n\n"\
+" sync_mode : 0: asynchronous, 1: synchronous\n" \
+" start : start offset of defragment region, unit: 4kb\n" \
+" length : bytes number of defragment region, unit: 4kb\n" \
+
+static void do_gc_range(int argc, char **argv, const struct cmd_desc *cmd)
+{
+ struct f2fs_gc_range range;
+ int ret, fd;
+
+ if (argc != 5) {
+ fputs("Excess arguments\n\n", stderr);
+ fputs(cmd->cmd_help, stderr);
+ exit(1);
+ }
+
+ range.sync = atoi(argv[1]);
+ range.start = (u64)atoi(argv[2]);
+ range.len = (u64)atoi(argv[3]);
+
+ fd = xopen(argv[4], O_RDWR, 0);
+
+ ret = ioctl(fd, F2FS_IOC_GARBAGE_COLLECT_RANGE, &range);
+ if (ret < 0) {
+ die_errno("F2FS_IOC_GARBAGE_COLLECT_RANGE failed");
+ }
+
+ printf("trigger %s gc_range [%lu, %lu] ret=%d\n",
+ range.sync ? "synchronous" : "asynchronous",
+ range.start, range.len, ret);
+ 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 }
@@ -1454,6 +1488,7 @@ const struct cmd_desc cmd_list[] = {
CMD(checkpoint),
CMD(precache_extents),
CMD(move_range),
+ CMD(gc_range),
{ NULL, NULL, NULL, NULL, 0 }
};
This patch supports a new sub-command 'gc_range' in f2fs_io to trigger gc to move blocks in specified range via F2FS_IOC_GARBAGE_COLLECT_RANGE ioctl. Signed-off-by: Chao Yu <chao@kernel.org> --- man/f2fs_io.8 | 3 +++ tools/f2fs_io/f2fs_io.c | 35 +++++++++++++++++++++++++++++++++++ 2 files changed, 38 insertions(+)