[PATCH v2] fsck.f2fs: Fix up nat journal corruption with -a (auto-fix) option

[Sahitya Tummala <stummala@codeaurora.org>]

Build segment manager and node manager always to catch and auto-fix
invalid NAT entries found in the NAT journal.

Signed-off-by: Sahitya Tummala <stummala@codeaurora.org>
---
v2:
 - cover all error paths in f2fs_init_nid_bitmap()

 fsck/mount.c | 29 ++++++++++++++++-------------
 1 file changed, 16 insertions(+), 13 deletions(-)

diff --git a/fsck/mount.c b/fsck/mount.c
index aa64e93..784003c 100644
--- a/fsck/mount.c
+++ b/fsck/mount.c
@@ -1071,6 +1071,7 @@ static int f2fs_init_nid_bitmap(struct f2fs_sb_info *sbi)
 			"NAT_JOURNAL_ENTRIES(%lu)\n",
 			nats_in_cursum(journal), NAT_JOURNAL_ENTRIES);
 		journal->n_nats = cpu_to_le16(NAT_JOURNAL_ENTRIES);
+		c.fix_on = 1;
 	}
 
 	for (i = 0; i < nats_in_cursum(journal); i++) {
@@ -1080,6 +1081,7 @@ static int f2fs_init_nid_bitmap(struct f2fs_sb_info *sbi)
 		if (!IS_VALID_BLK_ADDR(sbi, addr)) {
 			MSG(0, "\tError: f2fs_init_nid_bitmap: addr(%u) is invalid!!!\n", addr);
 			journal->n_nats = cpu_to_le16(i);
+			c.fix_on = 1;
 			continue;
 		}
 
@@ -1087,6 +1089,7 @@ static int f2fs_init_nid_bitmap(struct f2fs_sb_info *sbi)
 		if (!IS_VALID_NID(sbi, nid)) {
 			MSG(0, "\tError: f2fs_init_nid_bitmap: nid(%u) is invalid!!!\n", nid);
 			journal->n_nats = cpu_to_le16(i);
+			c.fix_on = 1;
 			continue;
 		}
 		if (addr != NULL_ADDR)
@@ -2632,19 +2635,6 @@ int f2fs_do_mount(struct f2fs_sb_info *sbi)
 			c.fix_on = 1;
 	}
 
-	if (c.auto_fix || c.preen_mode) {
-		u32 flag = get_cp(ckpt_flags);
-
-		if (flag & CP_FSCK_FLAG ||
-			flag & CP_QUOTA_NEED_FSCK_FLAG ||
-			(exist_qf_ino(sb) && (flag & CP_ERROR_FLAG))) {
-			c.fix_on = 1;
-		} else if (!c.preen_mode) {
-			print_cp_state(flag);
-			return 1;
-		}
-	}
-
 	c.bug_on = 0;
 
 	tune_sb_features(sbi);
@@ -2670,6 +2660,19 @@ int f2fs_do_mount(struct f2fs_sb_info *sbi)
 		return -1;
 	}
 
+	if (!c.fix_on && (c.auto_fix || c.preen_mode)) {
+		u32 flag = get_cp(ckpt_flags);
+
+		if (flag & CP_FSCK_FLAG ||
+			flag & CP_QUOTA_NEED_FSCK_FLAG ||
+			(exist_qf_ino(sb) && (flag & CP_ERROR_FLAG))) {
+			c.fix_on = 1;
+		} else if (!c.preen_mode) {
+			print_cp_state(flag);
+			return 1;
+		}
+	}
+
 	/* Check nat_bits */
 	if (c.func == FSCK && is_set_ckpt_flags(cp, CP_NAT_BITS_FLAG)) {
 		if (check_nat_bits(sbi, sb, cp) && c.fix_on)
-- 
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Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project.