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Subject[f2fs-dev][PATCH] resize.f2fs: add option for large_nat_bitmap feature
Date
From: xiongping1 <xiongping1@xiaomi.com>

resize.f2fs has already supported large_nat_bitmap feature, but has no
option to turn on it.

This change add a new '-i' option to control turning on/off it.

Signed-off-by: xiongping1 <xiongping1@xiaomi.com>
---
fsck/main.c | 6 +++++-
fsck/resize.c | 5 +++++
2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/fsck/main.c b/fsck/main.c
index 9a7d499..e7e3dfc 100644
--- a/fsck/main.c
+++ b/fsck/main.c
@@ -104,6 +104,7 @@ void resize_usage()
MSG(0, "\nUsage: resize.f2fs [options] device\n");
MSG(0, "[options]:\n");
MSG(0, " -d debug level [default:0]\n");
+ MSG(0, " -i extended node bitmap, node ratio is 20%% by default\n");
MSG(0, " -s safe resize (Does not resize metadata)");
MSG(0, " -t target sectors [default: device size]\n");
MSG(0, " -V print the version number and exit\n");
@@ -449,7 +450,7 @@ void f2fs_parse_options(int argc, char *argv[])
break;
}
} else if (!strcmp("resize.f2fs", prog)) {
- const char *option_string = "d:st:V";
+ const char *option_string = "d:st:iV";

c.func = RESIZE;
while ((option = getopt(argc, argv, option_string)) != EOF) {
@@ -476,6 +477,9 @@ void f2fs_parse_options(int argc, char *argv[])
ret = sscanf(optarg, "%"PRIx64"",
&c.target_sectors);
break;
+ case 'i':
+ c.large_nat_bitmap = 1;
+ break;
case 'V':
show_version(prog);
exit(0);
diff --git a/fsck/resize.c b/fsck/resize.c
index fc563f2..88e063e 100644
--- a/fsck/resize.c
+++ b/fsck/resize.c
@@ -519,6 +519,11 @@ static void rebuild_checkpoint(struct f2fs_sb_info *sbi,
else
set_cp(checksum_offset, CP_CHKSUM_OFFSET);

+ if (c.large_nat_bitmap) {
+ set_cp(checksum_offset, CP_MIN_CHKSUM_OFFSET);
+ flags |= CP_LARGE_NAT_BITMAP_FLAG;
+ }
+
set_cp(ckpt_flags, flags);

memcpy(new_cp, cp, (unsigned char *)cp->sit_nat_version_bitmap -
--
2.7.4
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