bcachefs: Add btree_trans* to inode_set_fn

This will be used when we need to re-hash a directory tree when setting
flags.

It is not possible to have concurrent btree_trans on a thread.
Signed-off-by: Joshua Ashton <joshua@froggi.es>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

fs/bcachefs/fs-io.c

@@ -109,7 +109,8 @@ struct inode_new_size {
 	unsigned	fields;
 };
 
-static int inode_set_size(struct bch_inode_info *inode,
+static int inode_set_size(struct btree_trans *trans,
+			  struct bch_inode_info *inode,
 			  struct bch_inode_unpacked *bi,
 			  void *p)
 {
@@ -389,7 +390,8 @@ static int bch2_extend(struct mnt_idmap *idmap,
 	return bch2_setattr_nonsize(idmap, inode, iattr);
 }
 
-static int bch2_truncate_finish_fn(struct bch_inode_info *inode,
+static int bch2_truncate_finish_fn(struct btree_trans *trans,
+				   struct bch_inode_info *inode,
 				   struct bch_inode_unpacked *bi,
 				   void *p)
 {
@@ -397,7 +399,8 @@ static int bch2_truncate_finish_fn(struct bch_inode_info *inode,
 	return 0;
 }
 
-static int bch2_truncate_start_fn(struct bch_inode_info *inode,
+static int bch2_truncate_start_fn(struct btree_trans *trans,
+				  struct bch_inode_info *inode,
 				  struct bch_inode_unpacked *bi, void *p)
 {
 	u64 *new_i_size = p;
@@ -518,7 +521,8 @@ int bch2_truncate(struct mnt_idmap *idmap,
 
 /* fallocate: */
 
-static int inode_update_times_fn(struct bch_inode_info *inode,
+static int inode_update_times_fn(struct btree_trans *trans,
+				 struct bch_inode_info *inode,
 				 struct bch_inode_unpacked *bi, void *p)
 {
 	struct bch_fs *c = inode->v.i_sb->s_fs_info;

fs/bcachefs/fs-ioctl.c

@@ -31,7 +31,8 @@ struct flags_set {
 	bool			projinherit;
 };
 
-static int bch2_inode_flags_set(struct bch_inode_info *inode,
+static int bch2_inode_flags_set(struct btree_trans *trans,
+				struct bch_inode_info *inode,
 				struct bch_inode_unpacked *bi,
 				void *p)
 {
@@ -124,7 +125,8 @@ static int bch2_ioc_fsgetxattr(struct bch_inode_info *inode,
 	return copy_to_user(arg, &fa, sizeof(fa));
 }
 
-static int fssetxattr_inode_update_fn(struct bch_inode_info *inode,
+static int fssetxattr_inode_update_fn(struct btree_trans *trans,
+				      struct bch_inode_info *inode,
 				      struct bch_inode_unpacked *bi,
 				      void *p)
 {
@@ -135,7 +137,7 @@ static int fssetxattr_inode_update_fn(struct bch_inode_info *inode,
 		bi->bi_project = s->projid;
 	}
 
-	return bch2_inode_flags_set(inode, bi, p);
+	return bch2_inode_flags_set(trans, inode, bi, p);
 }
 
 static int bch2_ioc_fssetxattr(struct bch_fs *c,
@@ -192,7 +194,8 @@ static int bch2_ioc_fssetxattr(struct bch_fs *c,
 	return ret;
 }
 
-static int bch2_reinherit_attrs_fn(struct bch_inode_info *inode,
+static int bch2_reinherit_attrs_fn(struct btree_trans *trans,
+				   struct bch_inode_info *inode,
 				   struct bch_inode_unpacked *bi,
 				   void *p)
 {

fs/bcachefs/fs.c

@@ -92,7 +92,7 @@ int __must_check bch2_write_inode(struct bch_fs *c,
 
 	ret   = bch2_inode_peek(&trans, &iter, &inode_u, inode_inum(inode),
 				BTREE_ITER_INTENT) ?:
-		(set ? set(inode, &inode_u, p) : 0) ?:
+		(set ? set(&trans, inode, &inode_u, p) : 0) ?:
 		bch2_inode_write(&trans, &iter, &inode_u) ?:
 		bch2_trans_commit(&trans, NULL, NULL, BTREE_INSERT_NOFAIL);
 
@@ -1414,7 +1414,8 @@ static void bch2_destroy_inode(struct inode *vinode)
 	call_rcu(&vinode->i_rcu, bch2_i_callback);
 }
 
-static int inode_update_times_fn(struct bch_inode_info *inode,
+static int inode_update_times_fn(struct btree_trans *trans,
+				 struct bch_inode_info *inode,
 				 struct bch_inode_unpacked *bi,
 				 void *p)
 {

fs/bcachefs/fs.h

@@ -174,7 +174,8 @@ static inline int bch2_set_projid(struct bch_fs *c,
 struct inode *bch2_vfs_inode_get(struct bch_fs *, subvol_inum);
 
 /* returns 0 if we want to do the update, or error is passed up */
-typedef int (*inode_set_fn)(struct bch_inode_info *,
+typedef int (*inode_set_fn)(struct btree_trans *,
+			    struct bch_inode_info *,
 			    struct bch_inode_unpacked *, void *);
 
 void bch2_inode_update_after_write(struct btree_trans *,

fs/bcachefs/xattr.c

@@ -494,7 +494,8 @@ struct inode_opt_set {
 	bool			defined;
 };
 
-static int inode_opt_set_fn(struct bch_inode_info *inode,
+static int inode_opt_set_fn(struct btree_trans *trans,
+			    struct bch_inode_info *inode,
 			    struct bch_inode_unpacked *bi,
 			    void *p)
 {