[GFS2] Further updates to dir and logging code

This reduces the size of the directory code by about 3k and gets
readdir() to use the functions which were introduced in the previous
directory code update.

Two memory allocations are merged into one. Eliminates zeroing of some
buffers which were never used before they were initialised by
other data.

There is still scope for further improvement in the directory code.

On the logging side, a hand created mutex has been replaced by a
standard Linux mutex in the log allocation code.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/fs/gfs2/recovery.c b/fs/gfs2/recovery.c
index 2df450e2f433..6c7e2e880e32 100644
--- a/fs/gfs2/recovery.c
+++ b/fs/gfs2/recovery.c
@@ -13,6 +13,7 @@
 #include <linux/completion.h>
 #include <linux/buffer_head.h>
 #include <linux/gfs2_ondisk.h>
+#include <linux/crc32.h>
 #include <asm/semaphore.h>
 
 #include "gfs2.h"
@@ -27,6 +28,7 @@
 #include "recovery.h"
 #include "super.h"
 #include "util.h"
+#include "dir.h"
 
 int gfs2_replay_read_block(struct gfs2_jdesc *jd, unsigned int blk,
                            struct buffer_head **bh)