[GFS2] Tidy up bmap/inode code

As per Jan Engelhardt's third set of comments, this make various
code style changes and moves the structures from format.h into
super.c, which was the only place that format.h was actually used.

Cc: Jan Engelhardt <jengelh@linux01.gwdg.de>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>

fs/gfs2/bmap.c

@@ -94,7 +94,7 @@ static int gfs2_unstuffer_page(struct gfs2_inode *ip, struct buffer_head *dibh,
 		map_bh(bh, inode->i_sb, block);
 
 	set_buffer_uptodate(bh);
-	if ((sdp->sd_args.ar_data == GFS2_DATA_ORDERED) || gfs2_is_jdata(ip))
+	if (sdp->sd_args.ar_data == GFS2_DATA_ORDERED || gfs2_is_jdata(ip))
 		gfs2_trans_add_bh(ip->i_gl, bh, 0);
 	mark_buffer_dirty(bh);
 
@@ -369,7 +369,7 @@ static inline u64 *metapointer(struct buffer_head *bh, int *boundary,
 	u64 *ptr;
 	*boundary = 0;
 	ptr = ((u64 *)(bh->b_data + head_size)) + mp->mp_list[height];
-	if (ptr + 1 == (u64*)(bh->b_data + bh->b_size))
+	if (ptr + 1 == (u64 *)(bh->b_data + bh->b_size))
 		*boundary = 1;
 	return ptr;
 }
@@ -456,7 +456,7 @@ static struct buffer_head *gfs2_block_pointers(struct inode *inode, u64 lblock,
 	if (gfs2_assert_warn(sdp, !gfs2_is_stuffed(ip)))
 		goto out;
 
-	bsize = (gfs2_is_dir(ip)) ? sdp->sd_jbsize : sdp->sd_sb.sb_bsize;
+	bsize = gfs2_is_dir(ip) ? sdp->sd_jbsize : sdp->sd_sb.sb_bsize;
 
 	height = calc_tree_height(ip, (lblock + 1) * bsize);
 	if (ip->i_di.di_height < height) {
@@ -554,7 +554,7 @@ int gfs2_extent_map(struct inode *inode, u64 lblock, int *new, u64 *dblock, unsi
 	bh = gfs2_block_pointers(inode, lblock, new, dblock, &boundary, &mp);
 	*extlen = 1;
 
-	if (bh && !IS_ERR(bh) && *dblock && !*new) {
+	if (bh != NULL && !IS_ERR(bh) && *dblock != 0 && *new == 0) {
 		u64 tmp_dblock;
 		int tmp_new;
 		unsigned int nptrs;
@@ -565,7 +565,7 @@ int gfs2_extent_map(struct inode *inode, u64 lblock, int *new, u64 *dblock, unsi
 			lookup_block(ip, bh, end_of_metadata, &mp, 0, &tmp_new, &tmp_dblock);
 			if (*dblock + *extlen != tmp_dblock)
 				break;
-			(*extlen)++;
+			++*extlen;
 		}
 	}
 	bmap_unlock(inode, create);
@@ -612,10 +612,8 @@ static int recursive_scan(struct gfs2_inode *ip, struct buffer_head *dibh,
 			return error;
 		dibh = bh;
 
-		top = (uint64_t *)(bh->b_data + sizeof(struct gfs2_dinode)) +
-			mp->mp_list[0];
-		bottom = (uint64_t *)(bh->b_data + sizeof(struct gfs2_dinode)) +
-			sdp->sd_diptrs;
+		top = (u64 *)(bh->b_data + sizeof(struct gfs2_dinode)) + mp->mp_list[0];
+		bottom = (u64 *)(bh->b_data + sizeof(struct gfs2_dinode)) + sdp->sd_diptrs;
 	} else {
 		error = gfs2_meta_indirect_buffer(ip, height, block, 0, &bh);
 		if (error)

fs/gfs2/glops.c

@@ -234,7 +234,6 @@ static void inode_go_sync(struct gfs2_glock *gl, int flags)
 		if (flags & DIO_RELEASE)
 			gfs2_ail_empty_gl(gl);
 	}
-
 }
 
 /**
@@ -324,12 +323,11 @@ static void inode_go_unlock(struct gfs2_holder *gh)
 	struct gfs2_glock *gl = gh->gh_gl;
 	struct gfs2_inode *ip = gl->gl_object;
 
-	if (ip) {
-		if (test_bit(GLF_DIRTY, &gl->gl_flags))
-			gfs2_inode_attr_in(ip);
-
-		gfs2_meta_cache_flush(ip);
-	}
+	if (ip == NULL)
+		return;
+	if (test_bit(GLF_DIRTY, &gl->gl_flags))
+		gfs2_inode_attr_in(ip);
+	gfs2_meta_cache_flush(ip);
 }
 
 /**

fs/gfs2/inode.c

@@ -97,15 +97,15 @@ void gfs2_inode_attr_in(struct gfs2_inode *ip)
 void gfs2_inode_attr_out(struct gfs2_inode *ip)
 {
 	struct inode *inode = &ip->i_inode;
-
+	struct gfs2_dinode *di = &ip->i_di;
 	gfs2_assert_withdraw(GFS2_SB(inode),
-		(ip->i_di.di_mode & S_IFMT) == (inode->i_mode & S_IFMT));
-	ip->i_di.di_mode = inode->i_mode;
-	ip->i_di.di_uid = inode->i_uid;
-	ip->i_di.di_gid = inode->i_gid;
-	ip->i_di.di_atime = inode->i_atime.tv_sec;
-	ip->i_di.di_mtime = inode->i_mtime.tv_sec;
-	ip->i_di.di_ctime = inode->i_ctime.tv_sec;
+		(di->di_mode & S_IFMT) == (inode->i_mode & S_IFMT));
+	di->di_mode = inode->i_mode;
+	di->di_uid = inode->i_uid;
+	di->di_gid = inode->i_gid;
+	di->di_atime = inode->i_atime.tv_sec;
+	di->di_mtime = inode->i_mtime.tv_sec;
+	di->di_ctime = inode->i_ctime.tv_sec;
 }
 
 static int iget_test(struct inode *inode, void *opaque)
@@ -1213,31 +1213,26 @@ int gfs2_glock_nq_atime(struct gfs2_holder *gh)
  *
  * Returns: 1 if A > B
  *         -1 if A < B
- *          0 if A = B
+ *          0 if A == B
  */
 
 static int glock_compare_atime(const void *arg_a, const void *arg_b)
 {
-	struct gfs2_holder *gh_a = *(struct gfs2_holder **)arg_a;
-	struct gfs2_holder *gh_b = *(struct gfs2_holder **)arg_b;
-	struct lm_lockname *a = &gh_a->gh_gl->gl_name;
-	struct lm_lockname *b = &gh_b->gh_gl->gl_name;
-	int ret = 0;
+	const struct gfs2_holder *gh_a = *(const struct gfs2_holder **)arg_a;
+	const struct gfs2_holder *gh_b = *(const struct gfs2_holder **)arg_b;
+	const struct lm_lockname *a = &gh_a->gh_gl->gl_name;
+	const struct lm_lockname *b = &gh_b->gh_gl->gl_name;
 
 	if (a->ln_number > b->ln_number)
-		ret = 1;
-	else if (a->ln_number < b->ln_number)
-		ret = -1;
-	else {
-		if (gh_a->gh_state == LM_ST_SHARED &&
-		    gh_b->gh_state == LM_ST_EXCLUSIVE)
-			ret = 1;
-		else if (gh_a->gh_state == LM_ST_SHARED &&
-			 (gh_b->gh_flags & GL_ATIME))
-			ret = 1;
-	}
+		return 1;
+	if (a->ln_number < b->ln_number)
+		return -1;
+	if (gh_a->gh_state == LM_ST_SHARED && gh_b->gh_state == LM_ST_EXCLUSIVE)
+		return 1;
+	if (gh_a->gh_state == LM_ST_SHARED && (gh_b->gh_flags & GL_ATIME))
+		return 1;
 
-	return ret;
+	return 0;
 }
 
 /**

fs/gfs2/super.c

@@ -21,7 +21,6 @@
 #include "incore.h"
 #include "bmap.h"
 #include "dir.h"
-#include "format.h"
 #include "glock.h"
 #include "glops.h"
 #include "inode.h"
@@ -34,6 +33,14 @@
 #include "trans.h"
 #include "util.h"
 
+static const uint32_t gfs2_old_fs_formats[] = {
+        0
+};
+
+static const uint32_t gfs2_old_multihost_formats[] = {
+        0
+};
+
 /**
  * gfs2_tune_init - Fill a gfs2_tune structure with default values
  * @gt: tune