[GFS2] Shrink gfs2_inode (2) - di_major/di_minor

This removes the device numbers from this structure by using
inode->i_rdev instead. It also cleans up the code in gfs2_mknod.
It results in shrinking the gfs2_inode by 8 bytes.

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

1 files changed, 16 insertions, 20 deletions

diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c
index 7ba05fc553aa..a99591956544 100644
--- a/fs/gfs2/inode.c
+++ b/fs/gfs2/inode.c
@@ -51,17 +51,6 @@ void gfs2_inode_attr_in(struct gfs2_inode *ip)
         struct gfs2_dinode_host *di = &ip->i_di;
 
         inode->i_ino = ip->i_num.no_addr;
-
-        switch (di->di_mode & S_IFMT) {
-        case S_IFBLK:
-        case S_IFCHR:
-                inode->i_rdev = MKDEV(di->di_major, di->di_minor);
-                break;
-        default:
-                inode->i_rdev = 0;
-                break;
-        };
-
         inode->i_mode = di->di_mode;
         inode->i_nlink = di->di_nlink;
         inode->i_uid = di->di_uid;
@@ -222,6 +211,15 @@ static int gfs2_dinode_in(struct gfs2_inode *ip, const void *buf)
                 return -ESTALE;
 
         di->di_mode = be32_to_cpu(str->di_mode);
+        ip->i_inode.i_rdev = 0;
+        switch (di->di_mode & S_IFMT) {
+        case S_IFBLK:
+        case S_IFCHR:
+                ip->i_inode.i_rdev = MKDEV(be32_to_cpu(str->di_major),
+                                           be32_to_cpu(str->di_minor));
+                break;
+        };
+
         di->di_uid = be32_to_cpu(str->di_uid);
         di->di_gid = be32_to_cpu(str->di_gid);
         di->di_nlink = be32_to_cpu(str->di_nlink);
@@ -230,8 +228,6 @@ static int gfs2_dinode_in(struct gfs2_inode *ip, const void *buf)
         di->di_atime = be64_to_cpu(str->di_atime);
         di->di_mtime = be64_to_cpu(str->di_mtime);
         di->di_ctime = be64_to_cpu(str->di_ctime);
-        di->di_major = be32_to_cpu(str->di_major);
-        di->di_minor = be32_to_cpu(str->di_minor);
 
         di->di_goal_meta = be64_to_cpu(str->di_goal_meta);
         di->di_goal_data = be64_to_cpu(str->di_goal_data);
@@ -270,7 +266,6 @@ int gfs2_inode_refresh(struct gfs2_inode *ip)
         }
 
         error = gfs2_dinode_in(ip, dibh->b_data);
-
         brelse(dibh);
         ip->i_vn = ip->i_gl->gl_vn;
 
@@ -684,7 +679,7 @@ out:
 static void init_dinode(struct gfs2_inode *dip, struct gfs2_glock *gl,
                         const struct gfs2_inum_host *inum, unsigned int mode,
                         unsigned int uid, unsigned int gid,
-                        const u64 *generation)
+                        const u64 *generation, dev_t dev)
 {
         struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
         struct gfs2_dinode *di;
@@ -705,7 +700,8 @@ static void init_dinode(struct gfs2_inode *dip, struct gfs2_glock *gl,
         di->di_size = cpu_to_be64(0);
         di->di_blocks = cpu_to_be64(1);
         di->di_atime = di->di_mtime = di->di_ctime = cpu_to_be64(get_seconds());
-        di->di_major = di->di_minor = cpu_to_be32(0);
+        di->di_major = cpu_to_be32(MAJOR(dev));
+        di->di_minor = cpu_to_be32(MINOR(dev));
         di->di_goal_meta = di->di_goal_data = cpu_to_be64(inum->no_addr);
         di->di_generation = cpu_to_be64(*generation);
         di->di_flags = cpu_to_be32(0);
@@ -740,7 +736,7 @@ static void init_dinode(struct gfs2_inode *dip, struct gfs2_glock *gl,
 
 static int make_dinode(struct gfs2_inode *dip, struct gfs2_glock *gl,
                        unsigned int mode, const struct gfs2_inum_host *inum,
-                       const u64 *generation)
+                       const u64 *generation, dev_t dev)
 {
         struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
         unsigned int uid, gid;
@@ -761,7 +757,7 @@ static int make_dinode(struct gfs2_inode *dip, struct gfs2_glock *gl,
         if (error)
                 goto out_quota;
 
-        init_dinode(dip, gl, inum, mode, uid, gid, generation);
+        init_dinode(dip, gl, inum, mode, uid, gid, generation, dev);
         gfs2_quota_change(dip, +1, uid, gid);
         gfs2_trans_end(sdp);
 
@@ -892,7 +888,7 @@ static int gfs2_security_init(struct gfs2_inode *dip, struct gfs2_inode *ip)
  */
 
 struct inode *gfs2_createi(struct gfs2_holder *ghs, const struct qstr *name,
-                           unsigned int mode)
+                           unsigned int mode, dev_t dev)
 {
         struct inode *inode;
         struct gfs2_inode *dip = ghs->gh_gl->gl_object;
@@ -950,7 +946,7 @@ struct inode *gfs2_createi(struct gfs2_holder *ghs, const struct qstr *name,
                         goto fail_gunlock;
         }
 
-        error = make_dinode(dip, ghs[1].gh_gl, mode, &inum, &generation);
+        error = make_dinode(dip, ghs[1].gh_gl, mode, &inum, &generation, dev);
         if (error)
                 goto fail_gunlock2;