[GFS2] Add gfs2_internal_read()

Add the new external read function. Its temporarily in jdata.c
even though the protoype is in ops_file.h - this will change
shortly. The current implementation will change to a page cache
one when that happens.

In order to effect the above changes, the various internal inodes
now have Linux inodes attached to them. We keep the references to
the Linux inodes, rather than the gfs2_inodes in the super block.

In order to get everything to work correctly I've had to reorder
the init sequence on mount (which I should probably have done
earlier when .gfs2_admin was made visible).

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

1 files changed, 8 insertions, 5 deletions

diff --git a/fs/gfs2/rgrp.c b/fs/gfs2/rgrp.c
index 87c80bbce1c..758cc565813 100644
--- a/fs/gfs2/rgrp.c
+++ b/fs/gfs2/rgrp.c
@@ -12,19 +12,20 @@
 #include <linux/spinlock.h>
 #include <linux/completion.h>
 #include <linux/buffer_head.h>
+#include <linux/fs.h>
 #include <asm/semaphore.h>
 
 #include "gfs2.h"
 #include "bits.h"
 #include "glock.h"
 #include "glops.h"
-#include "jdata.h"
 #include "lops.h"
 #include "meta_io.h"
 #include "quota.h"
 #include "rgrp.h"
 #include "super.h"
 #include "trans.h"
+#include "ops_file.h"
 
 /**
  * gfs2_rgrp_verify - Verify that a resource group is consistent
@@ -268,8 +269,10 @@ static int compute_bitstructs(struct gfs2_rgrpd *rgd)
 static int gfs2_ri_update(struct gfs2_inode *ip)
 {
 	struct gfs2_sbd *sdp = ip->i_sbd;
+	struct inode *inode = ip->i_vnode;
 	struct gfs2_rgrpd *rgd;
 	char buf[sizeof(struct gfs2_rindex)];
+	struct file_ra_state ra_state;
 	uint64_t junk = ip->i_di.di_size;
 	int error;
 
@@ -280,10 +283,10 @@ static int gfs2_ri_update(struct gfs2_inode *ip)
 
 	clear_rgrpdi(sdp);
 
+	file_ra_state_init(&ra_state, inode->i_mapping);
 	for (sdp->sd_rgrps = 0;; sdp->sd_rgrps++) {
-		error = gfs2_jdata_read_mem(ip, buf,
-					    sdp->sd_rgrps *
-					    sizeof(struct gfs2_rindex),
+		loff_t pos = sdp->sd_rgrps * sizeof(struct gfs2_rindex);
+		error = gfs2_internal_read(ip, &ra_state, buf, &pos,
 					    sizeof(struct gfs2_rindex));
 		if (!error)
 			break;
@@ -350,7 +353,7 @@ static int gfs2_ri_update(struct gfs2_inode *ip)
 
 int gfs2_rindex_hold(struct gfs2_sbd *sdp, struct gfs2_holder *ri_gh)
 {
-	struct gfs2_inode *ip = sdp->sd_rindex;
+	struct gfs2_inode *ip = get_v2ip(sdp->sd_rindex);
 	struct gfs2_glock *gl = ip->i_gl;
 	int error;