net: rtnetlink: validate IFLA_MTU attribute in rtnl_create_link()

[mirror_ubuntu-bionic-kernel.git] / include / linux / jbd2.h

diff --git a/include/linux/jbd2.h b/include/linux/jbd2.h
index b708e5169d1df9657bfafa76f929addce88d5c85..e9dd94518fd9efbc47574d270e898ef8adb32f62 100644 (file)
--- a/include/linux/jbd2.h
+++ b/include/linux/jbd2.h
@@ -454,6 +454,22 @@ 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;
@@ -1399,6 +1415,12 @@ 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);
@@ -1563,7 +1585,7 @@ static inline int jbd2_space_needed(journal_t *journal)
 static inline unsigned long jbd2_log_space_left(journal_t *journal)
 {
        /* Allow for rounding errors */
-       unsigned long free = journal->j_free - 32;
+       long free = journal->j_free - 32;
 
        if (journal->j_committing_transaction) {
                unsigned long committing = atomic_read(&journal->
@@ -1572,7 +1594,7 @@ static inline unsigned long jbd2_log_space_left(journal_t *journal)
                /* Transaction + control blocks */
                free -= committing + (committing >> JBD2_CONTROL_BLOCKS_SHIFT);
        }
-       return free;
+       return max_t(long, free, 0);
 }
 
 /*