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2024-01-05 071106ecf68c401173c58808b1cf5f68cc50d390 
 kernel/fs/btrfs/ordered-data.h
....@@ -23,7 +23,7 @@
2323 	int len;
2424 	struct list_head list;
2525 	/* last field is a variable length array of csums */
26
-	u32 sums[];
26
+	u8 sums[];
2727 };
2828 
2929 /*
....@@ -37,41 +37,44 @@
3737  * rbtree, just before waking any waiters.  It is used to indicate the
3838  * IO is done and any metadata is inserted into the tree.
3939  */
40
-#define BTRFS_ORDERED_IO_DONE 0 /* set when all the pages are written */
41
-
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-#define BTRFS_ORDERED_COMPLETE 1 /* set when removed from the tree */
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-
44
-#define BTRFS_ORDERED_NOCOW 2 /* set when we want to write in place */
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-
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-#define BTRFS_ORDERED_COMPRESSED 3 /* writing a zlib compressed extent */
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-
48
-#define BTRFS_ORDERED_PREALLOC 4 /* set when writing to preallocated extent */
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-
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-#define BTRFS_ORDERED_DIRECT 5 /* set when we're doing DIO with this extent */
51
-
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-#define BTRFS_ORDERED_IOERR 6 /* We had an io error when writing this out */
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-
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-#define BTRFS_ORDERED_UPDATED_ISIZE 7 /* indicates whether this ordered extent
55
-				       * has done its due diligence in updating
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-				       * the isize. */
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-#define BTRFS_ORDERED_TRUNCATED 8 /* Set when we have to truncate an extent */
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-
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-#define BTRFS_ORDERED_PENDING 9 /* We are waiting for this ordered extent to
60
-				  * complete in the current transaction. */
61
-#define BTRFS_ORDERED_REGULAR 10 /* Regular IO for COW */
40
+enum {
41
+	/* set when all the pages are written */
42
+	BTRFS_ORDERED_IO_DONE,
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+	/* set when removed from the tree */
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+	BTRFS_ORDERED_COMPLETE,
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+	/* set when we want to write in place */
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+	BTRFS_ORDERED_NOCOW,
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+	/* writing a zlib compressed extent */
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+	BTRFS_ORDERED_COMPRESSED,
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+	/* set when writing to preallocated extent */
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+	BTRFS_ORDERED_PREALLOC,
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+	/* set when we're doing DIO with this extent */
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+	BTRFS_ORDERED_DIRECT,
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+	/* We had an io error when writing this out */
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+	BTRFS_ORDERED_IOERR,
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+	/* Set when we have to truncate an extent */
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+	BTRFS_ORDERED_TRUNCATED,
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+	/* Regular IO for COW */
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+	BTRFS_ORDERED_REGULAR,
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+	/* Used during fsync to track already logged extents */
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+	BTRFS_ORDERED_LOGGED,
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+	/* We have already logged all the csums of the ordered extent */
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+	BTRFS_ORDERED_LOGGED_CSUM,
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+	/* We wait for this extent to complete in the current transaction */
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+	BTRFS_ORDERED_PENDING,
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+};
6266 
6367 struct btrfs_ordered_extent {
6468 	/* logical offset in the file */
6569 	u64 file_offset;
6670 
67
-	/* disk byte number */
68
-	u64 start;
69
-
70
-	/* ram length of the extent in bytes */
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-	u64 len;
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-
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-	/* extent length on disk */
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-	u64 disk_len;
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+	/*
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+	 * These fields directly correspond to the same fields in
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+	 * btrfs_file_extent_item.
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+	 */
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+	u64 disk_bytenr;
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+	u64 num_bytes;
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+	u64 disk_num_bytes;
7578 
7679 	/* number of bytes that still need writing */
7780 	u64 bytes_left;
....@@ -95,6 +98,9 @@
9598 	/* compression algorithm */
9699 	int compress_type;
97100 
101
+	/* Qgroup reserved space */
102
+	int qgroup_rsv;
103
+
98104 	/* reference count */
99105 	refcount_t refs;
100106 
....@@ -104,11 +110,8 @@
104110 	/* list of checksums for insertion when the extent io is done */
105111 	struct list_head list;
106112 
107
-	/* If we need to wait on this to be done */
113
+	/* used for fast fsyncs */
108114 	struct list_head log_list;
109
-
110
-	/* If the transaction needs to wait on this ordered extent */
111
-	struct list_head trans_list;
112115 
113116 	/* used to wait for the BTRFS_ORDERED_COMPLETE bit */
114117 	wait_queue_head_t wait;
....@@ -148,44 +151,48 @@
148151 }
149152 
150153 void btrfs_put_ordered_extent(struct btrfs_ordered_extent *entry);
151
-void btrfs_remove_ordered_extent(struct inode *inode,
154
+void btrfs_remove_ordered_extent(struct btrfs_inode *btrfs_inode,
152155 				struct btrfs_ordered_extent *entry);
153
-int btrfs_dec_test_ordered_pending(struct inode *inode,
156
+int btrfs_dec_test_ordered_pending(struct btrfs_inode *inode,
154157 				   struct btrfs_ordered_extent **cached,
155158 				   u64 file_offset, u64 io_size, int uptodate);
156
-int btrfs_dec_test_first_ordered_pending(struct inode *inode,
159
+int btrfs_dec_test_first_ordered_pending(struct btrfs_inode *inode,
157160 				   struct btrfs_ordered_extent **cached,
158161 				   u64 *file_offset, u64 io_size,
159162 				   int uptodate);
160
-int btrfs_add_ordered_extent(struct inode *inode, u64 file_offset,
161
-			     u64 start, u64 len, u64 disk_len, int type);
162
-int btrfs_add_ordered_extent_dio(struct inode *inode, u64 file_offset,
163
-				 u64 start, u64 len, u64 disk_len, int type);
164
-int btrfs_add_ordered_extent_compress(struct inode *inode, u64 file_offset,
165
-				      u64 start, u64 len, u64 disk_len,
166
-				      int type, int compress_type);
167
-void btrfs_add_ordered_sum(struct inode *inode,
168
-			   struct btrfs_ordered_extent *entry,
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+int btrfs_add_ordered_extent(struct btrfs_inode *inode, u64 file_offset,
164
+			     u64 disk_bytenr, u64 num_bytes, u64 disk_num_bytes,
165
+			     int type);
166
+int btrfs_add_ordered_extent_dio(struct btrfs_inode *inode, u64 file_offset,
167
+				 u64 disk_bytenr, u64 num_bytes,
168
+				 u64 disk_num_bytes, int type);
169
+int btrfs_add_ordered_extent_compress(struct btrfs_inode *inode, u64 file_offset,
170
+				      u64 disk_bytenr, u64 num_bytes,
171
+				      u64 disk_num_bytes, int type,
172
+				      int compress_type);
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+void btrfs_add_ordered_sum(struct btrfs_ordered_extent *entry,
169174 			   struct btrfs_ordered_sum *sum);
170
-struct btrfs_ordered_extent *btrfs_lookup_ordered_extent(struct inode *inode,
175
+struct btrfs_ordered_extent *btrfs_lookup_ordered_extent(struct btrfs_inode *inode,
171176 							 u64 file_offset);
172
-void btrfs_start_ordered_extent(struct inode *inode,
173
-				struct btrfs_ordered_extent *entry, int wait);
177
+void btrfs_start_ordered_extent(struct btrfs_ordered_extent *entry, int wait);
174178 int btrfs_wait_ordered_range(struct inode *inode, u64 start, u64 len);
175179 struct btrfs_ordered_extent *
176
-btrfs_lookup_first_ordered_extent(struct inode * inode, u64 file_offset);
180
+btrfs_lookup_first_ordered_extent(struct btrfs_inode *inode, u64 file_offset);
177181 struct btrfs_ordered_extent *btrfs_lookup_ordered_range(
178182 		struct btrfs_inode *inode,
179183 		u64 file_offset,
180184 		u64 len);
181
-int btrfs_ordered_update_i_size(struct inode *inode, u64 offset,
182
-				struct btrfs_ordered_extent *ordered);
183
-int btrfs_find_ordered_sum(struct inode *inode, u64 offset, u64 disk_bytenr,
184
-			   u32 *sum, int len);
185
+void btrfs_get_ordered_extents_for_logging(struct btrfs_inode *inode,
186
+					   struct list_head *list);
187
+int btrfs_find_ordered_sum(struct btrfs_inode *inode, u64 offset,
188
+			   u64 disk_bytenr, u8 *sum, int len);
185189 u64 btrfs_wait_ordered_extents(struct btrfs_root *root, u64 nr,
186190 			       const u64 range_start, const u64 range_len);
187
-u64 btrfs_wait_ordered_roots(struct btrfs_fs_info *fs_info, u64 nr,
191
+void btrfs_wait_ordered_roots(struct btrfs_fs_info *fs_info, u64 nr,
188192 			      const u64 range_start, const u64 range_len);
193
+void btrfs_lock_and_flush_ordered_range(struct btrfs_inode *inode, u64 start,
194
+					u64 end,
195
+					struct extent_state **cached_state);
189196 int __init ordered_data_init(void);
190197 void __cold ordered_data_exit(void);
191198