[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, 7 insertions, 0 deletions

diff --git a/fs/gfs2/jdata.c b/fs/gfs2/jdata.c
index 6caa93e46ce0..e43eaf133f10 100644
--- a/fs/gfs2/jdata.c
+++ b/fs/gfs2/jdata.c
@@ -22,6 +22,13 @@
 #include "meta_io.h"
 #include "trans.h"
 
+int gfs2_internal_read(struct gfs2_inode *ip,
+                       struct file_ra_state *ra_state,
+                       char *buf, loff_t *pos, unsigned size)
+{
+        return gfs2_jdata_read_mem(ip, buf, *pos, size);
+}
+
 int gfs2_jdata_get_buffer(struct gfs2_inode *ip, uint64_t block, int new,
                           struct buffer_head **bhp)
 {