jbd2: introduce jbd2_inode dirty range scoping

[thirdparty/kernel/stable.git] / include / linux / jbd2.h

diff --git a/include/linux/jbd2.h b/include/linux/jbd2.h
index 5c04181b7c6d8dd6ac5b3a4ebbceaf8577aefe2c..0e0393e7f41a438bd37f25f4797a3707db52c055 100644 (file)
--- a/include/linux/jbd2.h
+++ b/include/linux/jbd2.h
@@ -451,6 +451,22 @@ struct jbd2_inode {
         * @i_flags: Flags of inode [j_list_lock]
         */
        unsigned long i_flags;
+
+       /**
+        * @i_dirty_start:
+        *
+        * Offset in bytes where the dirty range for this inode starts.
+        * [j_list_lock]
+        */
+       loff_t i_dirty_start;
+
+       /**
+        * @i_dirty_end:
+        *
+        * Inclusive offset in bytes where the dirty range for this inode
+        * ends. [j_list_lock]
+        */
+       loff_t i_dirty_end;
 };
 
 struct jbd2_revoke_table_s;
@@ -1397,6 +1413,12 @@ extern int          jbd2_journal_force_commit(journal_t *);
 extern int        jbd2_journal_force_commit_nested(journal_t *);
 extern int        jbd2_journal_inode_add_write(handle_t *handle, struct jbd2_inode *inode);
 extern int        jbd2_journal_inode_add_wait(handle_t *handle, struct jbd2_inode *inode);
+extern int        jbd2_journal_inode_ranged_write(handle_t *handle,
+                       struct jbd2_inode *inode, loff_t start_byte,
+                       loff_t length);
+extern int        jbd2_journal_inode_ranged_wait(handle_t *handle,
+                       struct jbd2_inode *inode, loff_t start_byte,
+                       loff_t length);
 extern int        jbd2_journal_begin_ordered_truncate(journal_t *journal,
                                struct jbd2_inode *inode, loff_t new_size);
 extern void       jbd2_journal_init_jbd_inode(struct jbd2_inode *jinode, struct inode *inode);