1 files changed, 57 insertions, 24 deletions

diff --git a/include/linux/jbd2.h b/include/linux/jbd2.h
index d147f0f90360..d2e91ea998fd 100644
--- a/include/linux/jbd2.h
+++ b/include/linux/jbd2.h
@@ -168,6 +168,8 @@ struct commit_header {
         unsigned char   h_chksum_size;
         unsigned char   h_padding[2];
         __be32          h_chksum[JBD2_CHECKSUM_BYTES];
+        __be64          h_commit_sec;
+        __be32          h_commit_nsec;
 };
 
 /*
@@ -379,6 +381,38 @@ static inline void jbd_unlock_bh_journal_head(struct buffer_head *bh)
         bit_spin_unlock(BH_JournalHead, &bh->b_state);
 }
 
+/* Flags in jbd_inode->i_flags */
+#define __JI_COMMIT_RUNNING 0
+/* Commit of the inode data in progress. We use this flag to protect us from
+ * concurrent deletion of inode. We cannot use reference to inode for this
+ * since we cannot afford doing last iput() on behalf of kjournald
+ */
+#define JI_COMMIT_RUNNING (1 << __JI_COMMIT_RUNNING)
+
+/**
+ * struct jbd_inode is the structure linking inodes in ordered mode
+ *   present in a transaction so that we can sync them during commit.
+ */
+struct jbd2_inode {
+        /* Which transaction does this inode belong to? Either the running
+         * transaction or the committing one. [j_list_lock] */
+        transaction_t *i_transaction;
+
+        /* Pointer to the running transaction modifying inode's data in case
+         * there is already a committing transaction touching it. [j_list_lock] */
+        transaction_t *i_next_transaction;
+
+        /* List of inodes in the i_transaction [j_list_lock] */
+        struct list_head i_list;
+
+        /* VFS inode this inode belongs to [constant during the lifetime
+         * of the structure] */
+        struct inode *i_vfs_inode;
+
+        /* Flags of inode [j_list_lock] */
+        unsigned int i_flags;
+};
+
 struct jbd2_revoke_table_s;
 
 /**
@@ -509,24 +543,12 @@ struct transaction_s
         struct journal_head     *t_reserved_list;
 
         /*
-         * Doubly-linked circular list of all buffers under writeout during
-         * commit [j_list_lock]
-         */
-        struct journal_head     *t_locked_list;
-
-        /*
          * Doubly-linked circular list of all metadata buffers owned by this
          * transaction [j_list_lock]
          */
         struct journal_head     *t_buffers;
 
         /*
-         * Doubly-linked circular list of all data buffers still to be
-         * flushed before this transaction can be committed [j_list_lock]
-         */
-        struct journal_head     *t_sync_datalist;
-
-        /*
          * Doubly-linked circular list of all forget buffers (superseded
          * buffers which we can un-checkpoint once this transaction commits)
          * [j_list_lock]
@@ -565,6 +587,12 @@ struct transaction_s
         struct journal_head     *t_log_list;
 
         /*
+         * List of inodes whose data we've modified in data=ordered mode.
+         * [j_list_lock]
+         */
+        struct list_head        t_inode_list;
+
+        /*
          * Protects info related to handles
          */
         spinlock_t              t_handle_lock;
@@ -822,7 +850,8 @@ struct journal_s
          */
         struct block_device     *j_dev;
         int                     j_blocksize;
-        unsigned long long              j_blk_offset;
+        unsigned long long      j_blk_offset;
+        char                    j_devname[BDEVNAME_SIZE+24];
 
         /*
          * Device which holds the client fs.  For internal journal this will be
@@ -938,6 +967,9 @@ struct journal_s
 #define JBD2_FLUSHED    0x008   /* The journal superblock has been flushed */
 #define JBD2_LOADED     0x010   /* The journal superblock has been loaded */
 #define JBD2_BARRIER    0x020   /* Use IDE barriers */
+#define JBD2_ABORT_ON_SYNCDATA_ERR      0x040   /* Abort the journal on file
+                                                 * data write error in ordered
+                                                 * mode */
 
 /*
  * Function declarations for the journaling transaction and buffer
@@ -1004,7 +1036,6 @@ extern int	 jbd2_journal_extend (handle_t *, int nblocks);
 extern int       jbd2_journal_get_write_access(handle_t *, struct buffer_head *);
 extern int       jbd2_journal_get_create_access (handle_t *, struct buffer_head *);
 extern int       jbd2_journal_get_undo_access(handle_t *, struct buffer_head *);
-extern int       jbd2_journal_dirty_data (handle_t *, struct buffer_head *);
 extern int       jbd2_journal_dirty_metadata (handle_t *, struct buffer_head *);
 extern void      jbd2_journal_release_buffer (handle_t *, struct buffer_head *);
 extern int       jbd2_journal_forget (handle_t *, struct buffer_head *);
@@ -1032,7 +1063,7 @@ extern void	   jbd2_journal_clear_features
                    (journal_t *, unsigned long, unsigned long, unsigned long);
 extern int         jbd2_journal_create     (journal_t *);
 extern int         jbd2_journal_load       (journal_t *journal);
-extern void        jbd2_journal_destroy    (journal_t *);
+extern int         jbd2_journal_destroy    (journal_t *);
 extern int         jbd2_journal_recover    (journal_t *journal);
 extern int         jbd2_journal_wipe       (journal_t *, int);
 extern int         jbd2_journal_skip_recovery   (journal_t *);
@@ -1044,6 +1075,10 @@ extern void	   jbd2_journal_ack_err    (journal_t *);
 extern int         jbd2_journal_clear_err  (journal_t *);
 extern int         jbd2_journal_bmap(journal_t *, unsigned long, unsigned long long *);
 extern int         jbd2_journal_force_commit(journal_t *);
+extern int         jbd2_journal_file_inode(handle_t *handle, struct jbd2_inode *inode);
+extern int         jbd2_journal_begin_ordered_truncate(struct jbd2_inode *inode, loff_t new_size);
+extern void        jbd2_journal_init_jbd_inode(struct jbd2_inode *jinode, struct inode *inode);
+extern void        jbd2_journal_release_jbd_inode(journal_t *journal, struct jbd2_inode *jinode);
 
 /*
  * journal_head management
@@ -1179,15 +1214,13 @@ static inline int jbd_space_needed(journal_t *journal)
 
 /* journaling buffer types */
 #define BJ_None         0       /* Not journaled */
-#define BJ_SyncData     1       /* Normal data: flush before commit */
-#define BJ_Metadata     2       /* Normal journaled metadata */
-#define BJ_Forget       3       /* Buffer superseded by this transaction */
-#define BJ_IO           4       /* Buffer is for temporary IO use */
-#define BJ_Shadow       5       /* Buffer contents being shadowed to the log */
-#define BJ_LogCtl       6       /* Buffer contains log descriptors */
-#define BJ_Reserved     7       /* Buffer is reserved for access by journal */
-#define BJ_Locked       8       /* Locked for I/O during commit */
-#define BJ_Types        9
+#define BJ_Metadata     1       /* Normal journaled metadata */
+#define BJ_Forget       2       /* Buffer superseded by this transaction */
+#define BJ_IO           3       /* Buffer is for temporary IO use */
+#define BJ_Shadow       4       /* Buffer contents being shadowed to the log */
+#define BJ_LogCtl       5       /* Buffer contains log descriptors */
+#define BJ_Reserved     6       /* Buffer is reserved for access by journal */
+#define BJ_Types        7
 
 extern int jbd_blocks_per_page(struct inode *inode);