[GFS2] Add generation number

This adds a generation number for the eventual use of NFS to the
ondisk inode. Its backward compatible with the current code since
it doesn't really matter what the generation number is to start with,
and indeed since its set to zero, due to it being taken from padding
in both the inode and rgrp header, it should be fine.

The eventual plan is to use this rather than no_formal_ino in the
NFS filehandles. At that point no_formal_ino will be unused.

At the same time we also add a releasepages call back to the
"normal" address space for gfs2 inodes. Also I've removed a
one-linrer function thats not required any more.

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

1 files changed, 6 insertions, 6 deletions

diff --git a/fs/gfs2/rgrp.c b/fs/gfs2/rgrp.c
index 14c1f88..65eea0b 100644
--- a/fs/gfs2/rgrp.c
+++ b/fs/gfs2/rgrp.c
@@ -1205,7 +1205,7 @@ static struct gfs2_rgrpd *rgblk_free(struct gfs2_sbd *sdp, uint64_t bstart,
  * Returns: the allocated block
  */
 
-uint64_t gfs2_alloc_data(struct gfs2_inode *ip)
+u64 gfs2_alloc_data(struct gfs2_inode *ip)
 {
 	struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
 	struct gfs2_alloc *al = &ip->i_alloc;
@@ -1249,7 +1249,7 @@ uint64_t gfs2_alloc_data(struct gfs2_inode *ip)
  * Returns: the allocated block
  */
 
-uint64_t gfs2_alloc_meta(struct gfs2_inode *ip)
+u64 gfs2_alloc_meta(struct gfs2_inode *ip)
 {
 	struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
 	struct gfs2_alloc *al = &ip->i_alloc;
@@ -1294,13 +1294,13 @@ uint64_t gfs2_alloc_meta(struct gfs2_inode *ip)
  * Returns: the block allocated
  */
 
-uint64_t gfs2_alloc_di(struct gfs2_inode *dip)
+u64 gfs2_alloc_di(struct gfs2_inode *dip, u64 *generation)
 {
 	struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
 	struct gfs2_alloc *al = &dip->i_alloc;
 	struct gfs2_rgrpd *rgd = al->al_rgd;
-	uint32_t blk;
-	uint64_t block;
+	u32 blk;
+	u64 block;
 
 	blk = rgblk_search(rgd, rgd->rd_last_alloc_meta,
 			   GFS2_BLKST_FREE, GFS2_BLKST_DINODE);
@@ -1312,7 +1312,7 @@ uint64_t gfs2_alloc_di(struct gfs2_inode *dip)
 	gfs2_assert_withdraw(sdp, rgd->rd_rg.rg_free);
 	rgd->rd_rg.rg_free--;
 	rgd->rd_rg.rg_dinodes++;
-
+	*generation = rgd->rd_rg.rg_igeneration++;
 	gfs2_trans_add_bh(rgd->rd_gl, rgd->rd_bits[0].bi_bh, 1);
 	gfs2_rgrp_out(&rgd->rd_rg, rgd->rd_bits[0].bi_bh->b_data);