[GFS2] Remove function gfs2_get_block

This patch is just a cleanup.  Function gfs2_get_block() just calls
function gfs2_block_map reversing the last two parameters.  By
reversing the parameters, gfs2_block_map() may be called directly
and function gfs2_get_block may be eliminated altogether.
Since this function is done for every block operation,
this streamlines the code and makes it a little bit more efficient.

Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
diff --git a/fs/gfs2/log.c b/fs/gfs2/log.c
index 96dcf050..14333d8 100644
--- a/fs/gfs2/log.c
+++ b/fs/gfs2/log.c
@@ -344,7 +344,7 @@
 	struct buffer_head bh_map = { .b_state = 0, .b_blocknr = 0 };
 
 	bh_map.b_size = 1 << inode->i_blkbits;
-	error = gfs2_block_map(inode, lbn, 0, &bh_map);
+	error = gfs2_block_map(inode, lbn, &bh_map, 0);
 	if (error || !bh_map.b_blocknr)
 		printk(KERN_INFO "error=%d, dbn=%llu lbn=%u", error,
 		       (unsigned long long)bh_map.b_blocknr, lbn);