bcachefs: bkey errors are only AUTOFIX during read

Newly generated keys, in the transaction commit path or write path,
should not be AUTOFIX; those indicate bugs that we need to fail fast
for.

Fixes: 5612daaf ("bcachefs: Fix fsck warnings from bkey validation")
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

fs/bcachefs/error.c

@@ -430,10 +430,17 @@ int __bch2_fsck_err(struct bch_fs *c,
 
 int __bch2_bkey_fsck_err(struct bch_fs *c,
 			 struct bkey_s_c k,
-			 enum bch_fsck_flags flags,
+			 enum bch_validate_flags validate_flags,
 			 enum bch_sb_error_id err,
 			 const char *fmt, ...)
 {
+	if (validate_flags & BCH_VALIDATE_silent)
+		return -BCH_ERR_fsck_delete_bkey;
+
+	unsigned fsck_flags = 0;
+	if (!(validate_flags & (BCH_VALIDATE_write|BCH_VALIDATE_commit)))
+		fsck_flags |= FSCK_AUTOFIX|FSCK_CAN_FIX;
+
 	struct printbuf buf = PRINTBUF;
 	va_list args;
 
@@ -445,7 +452,7 @@ int __bch2_bkey_fsck_err(struct bch_fs *c,
 	va_end(args);
 	prt_str(&buf, ": delete?");
 
-	int ret = __bch2_fsck_err(c, NULL, flags, err, "%s", buf.buf);
+	int ret = __bch2_fsck_err(c, NULL, fsck_flags, err, "%s", buf.buf);
 	printbuf_exit(&buf);
 	return ret;
 }

fs/bcachefs/error.h

@@ -167,10 +167,11 @@ void bch2_flush_fsck_errs(struct bch_fs *);
 #define fsck_err_on(cond, c, _err_type, ...)				\
 	__fsck_err_on(cond, c, FSCK_CAN_FIX|FSCK_CAN_IGNORE, _err_type, __VA_ARGS__)
 
+enum bch_validate_flags;
 __printf(5, 6)
 int __bch2_bkey_fsck_err(struct bch_fs *,
 			 struct bkey_s_c,
-			 enum bch_fsck_flags,
+			 enum bch_validate_flags,
 			 enum bch_sb_error_id,
 			 const char *, ...);
 
@@ -180,11 +181,7 @@ int __bch2_bkey_fsck_err(struct bch_fs *,
  */
 #define bkey_fsck_err(c, _err_type, _err_msg, ...)			\
 do {									\
-	if ((flags & BCH_VALIDATE_silent)) {				\
-		ret = -BCH_ERR_fsck_delete_bkey;			\
-		goto fsck_err;						\
-	}								\
-	int _ret = __bch2_bkey_fsck_err(c, k, FSCK_CAN_FIX|FSCK_AUTOFIX,\
+	int _ret = __bch2_bkey_fsck_err(c, k, flags,			\
 				BCH_FSCK_ERR_##_err_type,		\
 				_err_msg, ##__VA_ARGS__);		\
 	if (_ret != -BCH_ERR_fsck_fix &&				\