1 files changed, 83 insertions, 4 deletions

diff --git a/fs/bcachefs/fs.h b/fs/bcachefs/fs.h
index fbbc7a3a3cb7..fad8f4e5fdfc 100644
--- a/fs/bcachefs/fs.h
+++ b/fs/bcachefs/fs.h
@@ -1,6 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef _BCACHEFS_FS_H
 #define _BCACHEFS_FS_H
 
+#include "inode.h"
 #include "opts.h"
 #include "str_hash.h"
 #include "quota_types.h"
@@ -12,6 +14,7 @@ struct bch_inode_info {
 	struct inode		v;
 
 	struct mutex		ei_update_lock;
+	struct deferred_update	*ei_inode_update;
 	u64			ei_journal_seq;
 	u64			ei_quota_reserved;
 	unsigned long		ei_last_dirtied;
@@ -28,6 +31,30 @@ struct bch_inode_info {
 #define to_bch_ei(_inode)					\
 	container_of_or_null(_inode, struct bch_inode_info, v)
 
+static inline int ptrcmp(void *l, void *r)
+{
+	return cmp_int(l, r);
+}
+
+#define __bch2_lock_inodes(_lock, ...)					\
+do {									\
+	struct bch_inode_info *a[] = { NULL, __VA_ARGS__ };		\
+	unsigned i;							\
+									\
+	bubble_sort(&a[1], ARRAY_SIZE(a) - 1 , ptrcmp);			\
+									\
+	for (i = ARRAY_SIZE(a) - 1; a[i]; --i)				\
+		if (a[i] != a[i - 1]) {					\
+			if (_lock)					\
+				mutex_lock_nested(&a[i]->ei_update_lock, i);\
+			else						\
+				mutex_unlock(&a[i]->ei_update_lock);	\
+		}							\
+} while (0)
+
+#define bch2_lock_inodes(...)	__bch2_lock_inodes(true, __VA_ARGS__)
+#define bch2_unlock_inodes(...)	__bch2_lock_inodes(false, __VA_ARGS__)
+
 static inline struct bch_inode_info *file_bch_inode(struct file *file)
 {
 	return to_bch_ei(file_inode(file));
@@ -43,18 +70,70 @@ static inline unsigned nlink_bias(umode_t mode)
 	return S_ISDIR(mode) ? 2 : 1;
 }
 
+static inline bool inode_attr_changing(struct bch_inode_info *dir,
+				struct bch_inode_info *inode,
+				enum inode_opt_id id)
+{
+	return !(inode->ei_inode.bi_fields_set & (1 << id)) &&
+		bch2_inode_opt_get(&dir->ei_inode, id) !=
+		bch2_inode_opt_get(&inode->ei_inode, id);
+}
+
+static inline bool inode_attrs_changing(struct bch_inode_info *dir,
+				 struct bch_inode_info *inode)
+{
+	unsigned id;
+
+	for (id = 0; id < Inode_opt_nr; id++)
+		if (inode_attr_changing(dir, inode, id))
+			return true;
+
+	return false;
+}
+
 struct bch_inode_unpacked;
 
 #ifndef NO_BCACHEFS_FS
 
+int bch2_fs_quota_transfer(struct bch_fs *,
+			   struct bch_inode_info *,
+			   struct bch_qid,
+			   unsigned,
+			   enum quota_acct_mode);
+
+static inline int bch2_set_projid(struct bch_fs *c,
+				  struct bch_inode_info *inode,
+				  u32 projid)
+{
+	struct bch_qid qid = inode->ei_qid;
+
+	qid.q[QTYP_PRJ] = projid;
+
+	return bch2_fs_quota_transfer(c, inode, qid,
+				      1 << QTYP_PRJ,
+				      KEY_TYPE_QUOTA_PREALLOC);
+}
+
+struct inode *bch2_vfs_inode_get(struct bch_fs *, u64);
+
 /* returns 0 if we want to do the update, or error is passed up */
 typedef int (*inode_set_fn)(struct bch_inode_info *,
 			    struct bch_inode_unpacked *, void *);
 
-int __must_check __bch2_write_inode(struct bch_fs *, struct bch_inode_info *,
-				    inode_set_fn, void *);
-int __must_check bch2_write_inode(struct bch_fs *,
-				  struct bch_inode_info *);
+void bch2_inode_update_after_write(struct bch_fs *,
+				   struct bch_inode_info *,
+				   struct bch_inode_unpacked *,
+				   unsigned);
+int __must_check bch2_write_inode_trans(struct btree_trans *,
+				struct bch_inode_info *,
+				struct bch_inode_unpacked *,
+				inode_set_fn, void *);
+int __must_check bch2_write_inode(struct bch_fs *, struct bch_inode_info *,
+				  inode_set_fn, void *, unsigned);
+
+int bch2_reinherit_attrs_fn(struct bch_inode_info *,
+			    struct bch_inode_unpacked *,
+			    void *);
 
 void bch2_vfs_exit(void);
 int bch2_vfs_init(void);