bcachefs: Fix bch2_ptr_swab for indirect extents

bch2_ptr_swab was never updated when the code for generic keys with
pointers was added - it assumed the entire val was only used for
pointers.

Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

fs/bcachefs/bkey_methods.c

@@ -202,15 +202,12 @@ void bch2_bkey_val_to_text(struct printbuf *out, struct bch_fs *c,
 	bch2_val_to_text(out, c, k);
 }
 
-void bch2_bkey_swab(const struct bkey_format *f,
-		    struct bkey_packed *k)
+void bch2_bkey_swab_val(struct bkey_s k)
 {
-	const struct bkey_ops *ops = &bch2_bkey_ops[k->type];
-
-	bch2_bkey_swab_key(f, k);
+	const struct bkey_ops *ops = &bch2_bkey_ops[k.k->type];
 
 	if (ops->swab)
-		ops->swab(f, k);
+		ops->swab(k);
 }
 
 bool bch2_bkey_normalize(struct bch_fs *c, struct bkey_s k)

fs/bcachefs/bkey_methods.h

@@ -29,7 +29,7 @@ struct bkey_ops {
 	void		(*key_debugcheck)(struct bch_fs *, struct bkey_s_c);
 	void		(*val_to_text)(struct printbuf *, struct bch_fs *,
 				       struct bkey_s_c);
-	void		(*swab)(const struct bkey_format *, struct bkey_packed *);
+	void		(*swab)(struct bkey_s);
 	bool		(*key_normalize)(struct bch_fs *, struct bkey_s);
 	enum merge_result (*key_merge)(struct bch_fs *,
 				       struct bkey_s, struct bkey_s);
@@ -51,7 +51,7 @@ void bch2_val_to_text(struct printbuf *, struct bch_fs *,
 void bch2_bkey_val_to_text(struct printbuf *, struct bch_fs *,
 			   struct bkey_s_c);
 
-void bch2_bkey_swab(const struct bkey_format *, struct bkey_packed *);
+void bch2_bkey_swab_val(struct bkey_s);
 
 bool bch2_bkey_normalize(struct bch_fs *, struct bkey_s);
 

fs/bcachefs/btree_io.c

@@ -783,7 +783,7 @@ static int validate_bset(struct bch_fs *c, struct btree *b,
 
 	for (k = i->start;
 	     k != vstruct_last(i);) {
-		struct bkey_s_c u;
+		struct bkey_s u;
 		struct bkey tmp;
 		const char *invalid;
 
@@ -804,21 +804,24 @@ static int validate_bset(struct bch_fs *c, struct btree *b,
 		}
 
 		if (BSET_BIG_ENDIAN(i) != CPU_BIG_ENDIAN)
-			bch2_bkey_swab(&b->format, k);
+			bch2_bkey_swab_key(&b->format, k);
 
 		if (!write &&
 		    version < bcachefs_metadata_version_bkey_renumber)
 			bch2_bkey_renumber(btree_node_type(b), k, write);
 
-		u = bkey_disassemble(b, k, &tmp);
+		u = __bkey_disassemble(b, k, &tmp);
 
-		invalid = __bch2_bkey_invalid(c, u, btree_node_type(b)) ?:
-			bch2_bkey_in_btree_node(b, u) ?:
-			(write ? bch2_bkey_val_invalid(c, u) : NULL);
+		if (BSET_BIG_ENDIAN(i) != CPU_BIG_ENDIAN)
+			bch2_bkey_swab_val(u);
+
+		invalid = __bch2_bkey_invalid(c, u.s_c, btree_node_type(b)) ?:
+			bch2_bkey_in_btree_node(b, u.s_c) ?:
+			(write ? bch2_bkey_val_invalid(c, u.s_c) : NULL);
 		if (invalid) {
 			char buf[160];
 
-			bch2_bkey_val_to_text(&PBUF(buf), c, u);
+			bch2_bkey_val_to_text(&PBUF(buf), c, u.s_c);
 			btree_err(BTREE_ERR_FIXABLE, c, b, i,
 				  "invalid bkey:\n%s\n%s", invalid, buf);
 

fs/bcachefs/ec.h

@@ -12,6 +12,7 @@ void bch2_stripe_to_text(struct printbuf *, struct bch_fs *,
 #define bch2_bkey_ops_stripe (struct bkey_ops) {	\
 	.key_invalid	= bch2_stripe_invalid,		\
 	.val_to_text	= bch2_stripe_to_text,		\
+	.swab		= bch2_ptr_swab,		\
 }
 
 static inline unsigned stripe_csums_per_device(const struct bch_stripe *s)

fs/bcachefs/extents.c

@@ -1078,17 +1078,19 @@ const char *bch2_bkey_ptrs_invalid(const struct bch_fs *c, struct bkey_s_c k)
 	return NULL;
 }
 
-void bch2_ptr_swab(const struct bkey_format *f, struct bkey_packed *k)
+void bch2_ptr_swab(struct bkey_s k)
 {
+	struct bkey_ptrs ptrs = bch2_bkey_ptrs(k);
 	union bch_extent_entry *entry;
-	u64 *d = (u64 *) bkeyp_val(f, k);
-	unsigned i;
+	u64 *d;
 
-	for (i = 0; i < bkeyp_val_u64s(f, k); i++)
-		d[i] = swab64(d[i]);
+	for (d =  (u64 *) ptrs.start;
+	     d != (u64 *) ptrs.end;
+	     d++)
+		*d = swab64(*d);
 
-	for (entry = (union bch_extent_entry *) d;
-	     entry < (union bch_extent_entry *) (d + bkeyp_val_u64s(f, k));
+	for (entry = ptrs.start;
+	     entry < ptrs.end;
 	     entry = extent_entry_next(entry)) {
 		switch (extent_entry_type(entry)) {
 		case BCH_EXTENT_ENTRY_ptr:

fs/bcachefs/extents.h

@@ -532,7 +532,7 @@ void bch2_bkey_ptrs_to_text(struct printbuf *, struct bch_fs *,
 			    struct bkey_s_c);
 const char *bch2_bkey_ptrs_invalid(const struct bch_fs *, struct bkey_s_c);
 
-void bch2_ptr_swab(const struct bkey_format *, struct bkey_packed *);
+void bch2_ptr_swab(struct bkey_s);
 
 /* Generic extent code: */
 

fs/bcachefs/journal_io.c

@@ -170,8 +170,10 @@ static int journal_validate_key(struct bch_fs *c, struct jset *jset,
 		return 0;
 	}
 
-	if (JSET_BIG_ENDIAN(jset) != CPU_BIG_ENDIAN)
-		bch2_bkey_swab(NULL, bkey_to_packed(k));
+	if (JSET_BIG_ENDIAN(jset) != CPU_BIG_ENDIAN) {
+		bch2_bkey_swab_key(NULL, bkey_to_packed(k));
+		bch2_bkey_swab_val(bkey_i_to_s(k));
+	}
 
 	if (!write &&
 	    version < bcachefs_metadata_version_bkey_renumber)

fs/bcachefs/reflink.h

@@ -22,6 +22,7 @@ void bch2_reflink_v_to_text(struct printbuf *, struct bch_fs *,
 #define bch2_bkey_ops_reflink_v (struct bkey_ops) {		\
 	.key_invalid	= bch2_reflink_v_invalid,		\
 	.val_to_text	= bch2_reflink_v_to_text,		\
+	.swab		= bch2_ptr_swab,			\
 }
 
 s64 bch2_remap_range(struct bch_fs *, struct bpos, struct bpos,