Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs

Pull ext2, ext3 and quota fixes from Jan Kara:
 "Interesting bits are:
   - removal of a special i_mutex locking subclass (I_MUTEX_QUOTA) since
     quota code does not need i_mutex anymore in any unusual way.
   - backport (from ext4) of a fix of a checkpointing bug (missing cache
     flush) that could lead to fs corruption on power failure

  The rest are just random small fixes & cleanups."

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
  ext2: trivial fix to comment for ext2_free_blocks
  ext2: remove the redundant comment for ext2_export_ops
  ext3: return 32/64-bit dir name hash according to usage type
  quota: Get rid of nested I_MUTEX_QUOTA locking subclass
  quota: Use precomputed value of sb_dqopt in dquot_quota_sync
  ext2: Remove i_mutex use from ext2_quota_write()
  reiserfs: Remove i_mutex use from reiserfs_quota_write()
  ext4: Remove i_mutex use from ext4_quota_write()
  ext3: Remove i_mutex use from ext3_quota_write()
  quota: Fix double lock in add_dquot_ref() with CONFIG_QUOTA_DEBUG
  jbd: Write journal superblock with WRITE_FUA after checkpointing
  jbd: protect all log tail updates with j_checkpoint_mutex
  jbd: Split updating of journal superblock and marking journal empty
  ext2: do not register write_super within VFS
  ext2: Remove s_dirt handling
  ext2: write superblock only once on unmount
  ext3: update documentation with barrier=1 default
  ext3: remove max_debt in find_group_orlov()
  jbd: Refine commit writeout logic

1 files changed, 11 insertions, 7 deletions

diff --git a/include/linux/jbd.h b/include/linux/jbd.h
index d211732b9e99..c8f32975f0e4 100644
--- a/include/linux/jbd.h
+++ b/include/linux/jbd.h
@@ -479,12 +479,6 @@ struct transaction_s
          * How many handles used this transaction? [t_handle_lock]
          */
         int t_handle_count;
-
-        /*
-         * This transaction is being forced and some process is
-         * waiting for it to finish.
-         */
-        unsigned int t_synchronous_commit:1;
 };
 
 /**
@@ -531,6 +525,8 @@ struct transaction_s
  *  transaction
  * @j_commit_request: Sequence number of the most recent transaction wanting
  *     commit
+ * @j_commit_waited: Sequence number of the most recent transaction someone
+ *     is waiting for to commit.
  * @j_uuid: Uuid of client object.
  * @j_task: Pointer to the current commit thread for this journal
  * @j_max_transaction_buffers:  Maximum number of metadata buffers to allow in a
@@ -696,6 +692,13 @@ struct journal_s
         tid_t                   j_commit_request;
 
         /*
+         * Sequence number of the most recent transaction someone is waiting
+         * for to commit.
+         * [j_state_lock]
+         */
+        tid_t                   j_commit_waited;
+
+        /*
          * Journal uuid: identifies the object (filesystem, LVM volume etc)
          * backed by this journal.  This will eventually be replaced by an array
          * of uuids, allowing us to index multiple devices within a single
@@ -861,7 +864,8 @@ extern int	   journal_destroy    (journal_t *);
 extern int         journal_recover    (journal_t *journal);
 extern int         journal_wipe       (journal_t *, int);
 extern int         journal_skip_recovery        (journal_t *);
-extern void        journal_update_superblock    (journal_t *, int);
+extern void        journal_update_sb_log_tail   (journal_t *, tid_t, unsigned int,
+                                                 int);
 extern void        journal_abort      (journal_t *, int);
 extern int         journal_errno      (journal_t *);
 extern void        journal_ack_err    (journal_t *);