inject.f2fs: fix injecting nat/sit journal in compact summary

When CP has CP_COMPACT_SUM_FLAG set, the nat/sit journal is stored in
compact summary blocks at start_sum_block() rather than in the regular
summary area. However, rewrite_nat_in_journal() and
rewrite_sit_in_journal() only handled CP_UMOUNT_FLAG and the running
state, missing the compact summary case.This caused the fault injection
to fail.

Fix this by adding the CP_COMPACT_SUM_FLAG check before the existing
CP_UMOUNT_FLAG check in both functions, writing the journal to the
correct compact summary block location.

Test steps:
1. NAT journal injection (nid=4, quota file):
  inject.f2fs --nat 0 --mb block_addr --nid 4 --val 12345 /dev/block/by-name/userdata
  Before: blkaddr unchanged (308225)
  After:  blkaddr = 12345

2. SIT journal injection (segno=61075, CURSEG_COLD_DATA):
  inject.f2fs --sit 0 --blk 0x1e1da00 --mb vblocks --val 123 /dev/block/by-name/userdata
  Before: vblocks unchanged (0)
  After:  vblocks = 123

Signed-off-by: Sheng Yong <shengyong1@xiaomi.com>
Signed-off-by: liujinbao1 <liujinbao1@xiaomi.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

Author: liujinbao1

fsck/inject.c

@@ -675,6 +675,14 @@ static void rewrite_nat_in_journal(struct f2fs_sb_info *sbi, u32 nid,
 		}
 	}
 
+	if (is_set_ckpt_flags(cp, CP_COMPACT_SUM_FLAG)) {
+		blkaddr = start_sum_block(sbi);
+		ret = dev_write(&journal->n_nats, blkaddr << F2FS_BLKSIZE_BITS,
+				SUM_JOURNAL_SIZE, WRITE_LIFE_NONE);
+		ASSERT(ret >= 0);
+		return;
+	}
+
 	if (is_set_ckpt_flags(cp, CP_UMOUNT_FLAG))
 		blkaddr = sum_blk_addr(sbi, NR_CURSEG_TYPE, CURSEG_HOT_DATA);
 	else
@@ -806,6 +814,14 @@ static void rewrite_sit_in_journal(struct f2fs_sb_info *sbi, unsigned int segno,
 		}
 	}
 
+	if (is_set_ckpt_flags(cp, CP_COMPACT_SUM_FLAG)) {
+		blkaddr = start_sum_block(sbi);
+		ret = dev_write(&journal->n_sits, (blkaddr << F2FS_BLKSIZE_BITS) + SUM_JOURNAL_SIZE,
+				SUM_JOURNAL_SIZE, WRITE_LIFE_NONE);
+		ASSERT(ret >= 0);
+		return;
+	}
+
 	if (is_set_ckpt_flags(cp, CP_UMOUNT_FLAG))
 		blkaddr = sum_blk_addr(sbi, NR_CURSEG_TYPE, CURSEG_COLD_DATA);
 	else