3 files changed, 7 insertions, 4 deletions

diff --git a/fs/jbd2/checkpoint.c b/fs/jbd2/checkpoint.c
index 30beb11ef928..076d1cc44f95 100644
--- a/fs/jbd2/checkpoint.c
+++ b/fs/jbd2/checkpoint.c
@@ -530,7 +530,8 @@ int jbd2_cleanup_journal_tail(journal_t *journal)
          */
         if ((journal->j_fs_dev != journal->j_dev) &&
             (journal->j_flags & JBD2_BARRIER))
-                blkdev_issue_flush(journal->j_fs_dev, NULL);
+                blkdev_issue_flush(journal->j_fs_dev, GFP_KERNEL, NULL,
+                        BLKDEV_IFL_WAIT);
         if (!(journal->j_flags & JBD2_ABORT))
                 jbd2_journal_update_superblock(journal, 1);
         return 0;
diff --git a/fs/jbd2/commit.c b/fs/jbd2/commit.c
index 671da7fb7ffd..75716d3d2be0 100644
--- a/fs/jbd2/commit.c
+++ b/fs/jbd2/commit.c
@@ -717,7 +717,8 @@ start_journal_io:
         if (commit_transaction->t_flushed_data_blocks &&
             (journal->j_fs_dev != journal->j_dev) &&
             (journal->j_flags & JBD2_BARRIER))
-                blkdev_issue_flush(journal->j_fs_dev, NULL);
+                blkdev_issue_flush(journal->j_fs_dev, GFP_KERNEL, NULL,
+                        BLKDEV_IFL_WAIT);
 
         /* Done it all: now write the commit record asynchronously. */
         if (JBD2_HAS_INCOMPAT_FEATURE(journal,
@@ -727,7 +728,8 @@ start_journal_io:
                 if (err)
                         __jbd2_journal_abort_hard(journal);
                 if (journal->j_flags & JBD2_BARRIER)
-                        blkdev_issue_flush(journal->j_dev, NULL);
+                        blkdev_issue_flush(journal->j_dev, GFP_KERNEL, NULL,
+                                BLKDEV_IFL_WAIT);
         }
 
         err = journal_finish_inode_data_buffers(journal, commit_transaction);
diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c
index c03d4dce4d76..bc2ff5932769 100644
--- a/fs/jbd2/journal.c
+++ b/fs/jbd2/journal.c
@@ -1889,7 +1889,7 @@ static struct kmem_cache *get_slab(size_t size)
         BUG_ON(i >= JBD2_MAX_SLABS);
         if (unlikely(i < 0))
                 i = 0;
-        BUG_ON(jbd2_slab[i] == 0);
+        BUG_ON(jbd2_slab[i] == NULL);
         return jbd2_slab[i];
 }