freevxfs: move VFS inode allocation into vxfs_blkiget and vxfs_stiget

Signed-off-by: Krzysztof Błaszkowski <kb@sysmikro.com.pl>
[hch: split from a larger patch]
Signed-off-by: Christoph Hellwig <hch@lst.de>

fs/freevxfs/vxfs_extern.h

@@ -54,11 +54,9 @@ extern int			vxfs_read_fshead(struct super_block *);
 extern const struct address_space_operations vxfs_immed_aops;
 extern struct kmem_cache	*vxfs_inode_cachep;
 extern void			vxfs_dumpi(struct vxfs_inode_info *, ino_t);
-extern struct inode *		vxfs_get_fake_inode(struct super_block *,
-					struct vxfs_inode_info *);
-extern struct vxfs_inode_info *	vxfs_blkiget(struct super_block *, u_long, ino_t);
-extern struct vxfs_inode_info *	vxfs_stiget(struct super_block *, ino_t);
-extern struct inode *		vxfs_iget(struct super_block *, ino_t);
+extern struct inode		*vxfs_blkiget(struct super_block *, u_long, ino_t);
+extern struct inode		*vxfs_stiget(struct super_block *, ino_t);
+extern struct inode		*vxfs_iget(struct super_block *, ino_t);
 extern void			vxfs_evict_inode(struct inode *);
 
 /* vxfs_lookup.c */

fs/freevxfs/vxfs_fshead.c

@@ -108,31 +108,26 @@ vxfs_read_fshead(struct super_block *sbp)
 {
 	struct vxfs_sb_info		*infp = VXFS_SBI(sbp);
 	struct vxfs_fsh			*pfp, *sfp;
-	struct vxfs_inode_info		*vip, *tip;
+	struct vxfs_inode_info		*vip;
 
-	vip = vxfs_blkiget(sbp, infp->vsi_iext, infp->vsi_fshino);
-	if (!vip) {
+	infp->vsi_fship = vxfs_blkiget(sbp, infp->vsi_iext, infp->vsi_fshino);
+	if (!infp->vsi_fship) {
 		printk(KERN_ERR "vxfs: unable to read fsh inode\n");
 		return -EINVAL;
 	}
+
+	vip = VXFS_INO(infp->vsi_fship);
 	if (!VXFS_ISFSH(vip)) {
 		printk(KERN_ERR "vxfs: fsh list inode is of wrong type (%x)\n",
 				vip->vii_mode & VXFS_TYPE_MASK); 
-		goto out_free_fship;
+		goto out_iput_fship;
 	}
 
-
 #ifdef DIAGNOSTIC
 	printk("vxfs: fsh inode dump:\n");
 	vxfs_dumpi(vip, infp->vsi_fshino);
 #endif
 
-	infp->vsi_fship = vxfs_get_fake_inode(sbp, vip);
-	if (!infp->vsi_fship) {
-		printk(KERN_ERR "vxfs: unable to get fsh inode\n");
-		goto out_free_fship;
-	}
-
 	sfp = vxfs_getfsh(infp->vsi_fship, 0);
 	if (!sfp) {
 		printk(KERN_ERR "vxfs: unable to get structural fsh\n");
@@ -153,15 +148,10 @@ vxfs_read_fshead(struct super_block *sbp)
 	vxfs_dumpfsh(pfp);
 #endif
 
-	tip = vxfs_blkiget(sbp, infp->vsi_iext,
+	infp->vsi_stilist = vxfs_blkiget(sbp, infp->vsi_iext,
 			fs32_to_cpu(infp, sfp->fsh_ilistino[0]));
-	if (!tip)
-		goto out_free_pfp;
-
-	infp->vsi_stilist = vxfs_get_fake_inode(sbp, tip);
 	if (!infp->vsi_stilist) {
 		printk(KERN_ERR "vxfs: unable to get structural list inode\n");
-		kfree(tip);
 		goto out_free_pfp;
 	}
 	if (!VXFS_ISILT(VXFS_INO(infp->vsi_stilist))) {
@@ -170,13 +160,9 @@ vxfs_read_fshead(struct super_block *sbp)
 		goto out_iput_stilist;
 	}
 
-	tip = vxfs_stiget(sbp, fs32_to_cpu(infp, pfp->fsh_ilistino[0]));
-	if (!tip)
-		goto out_iput_stilist;
-	infp->vsi_ilist = vxfs_get_fake_inode(sbp, tip);
+	infp->vsi_ilist = vxfs_stiget(sbp, fs32_to_cpu(infp, pfp->fsh_ilistino[0]));
 	if (!infp->vsi_ilist) {
 		printk(KERN_ERR "vxfs: unable to get inode list inode\n");
-		kfree(tip);
 		goto out_iput_stilist;
 	}
 	if (!VXFS_ISILT(VXFS_INO(infp->vsi_ilist))) {
@@ -198,7 +184,4 @@ vxfs_read_fshead(struct super_block *sbp)
  out_iput_fship:
 	iput(infp->vsi_fship);
 	return -EINVAL;
- out_free_fship:
- 	kfree(vip);
-	return -EINVAL;
 }

fs/freevxfs/vxfs_inode.c

@@ -44,6 +44,8 @@
 
 struct kmem_cache		*vxfs_inode_cachep;
 
+static struct inode *		vxfs_get_fake_inode(struct super_block *,
+					struct vxfs_inode_info *);
 
 #ifdef DIAGNOSTIC
 /*
@@ -112,10 +114,11 @@ static inline void dip2vip_cpy(struct vxfs_sb_info *sbi,
  *  buffercache.  This function should not be used outside the
  *  read_super() method, otherwise the data may be incoherent.
  */
-struct vxfs_inode_info *
+struct inode *
 vxfs_blkiget(struct super_block *sbp, u_long extent, ino_t ino)
 {
 	struct buffer_head		*bp;
+	struct inode			*inode;
 	u_long				block, offset;
 
 	block = extent + ((ino * VXFS_ISIZE) / sbp->s_blocksize);
@@ -134,7 +137,11 @@ vxfs_blkiget(struct super_block *sbp, u_long extent, ino_t ino)
 		vxfs_dumpi(vip, ino);
 #endif
 		brelse(bp);
-		return (vip);
+
+		inode = vxfs_get_fake_inode(sbp, vip);
+		if (!inode)
+			kmem_cache_free(vxfs_inode_cachep, vip);
+		return inode;
 	}
 
 fail:
@@ -152,7 +159,7 @@ vxfs_blkiget(struct super_block *sbp, u_long extent, ino_t ino)
  * Description:
  *  Search the for inode number @ino in the filesystem
  *  described by @sbp.  Use the specified inode table (@ilistp).
- *  Returns the matching VxFS inode on success, else an error code.
+ *  Returns the matching inode on success, else an error code.
  */
 static struct vxfs_inode_info *
 __vxfs_iget(ino_t ino, struct inode *ilistp)
@@ -196,15 +203,21 @@ __vxfs_iget(ino_t ino, struct inode *ilistp)
  * Description:
  *  Find inode @ino in the filesystem described by @sbp using
  *  the structural inode list.
- *  Returns the matching VxFS inode on success, else a NULL pointer.
+ *  Returns the matching inode on success, else a NULL pointer.
  */
-struct vxfs_inode_info *
+struct inode *
 vxfs_stiget(struct super_block *sbp, ino_t ino)
 {
 	struct vxfs_inode_info *vip;
+	struct inode *inode;
 
 	vip = __vxfs_iget(ino, VXFS_SBI(sbp)->vsi_stilist);
-	return IS_ERR(vip) ? NULL : vip;
+	if (IS_ERR(vip))
+		return NULL;
+	inode = vxfs_get_fake_inode(sbp, vip);
+	if (!inode)
+		kmem_cache_free(vxfs_inode_cachep, vip);
+	return inode;
 }
 
 /**
@@ -282,7 +295,7 @@ vxfs_iinit(struct inode *ip, struct vxfs_inode_info *vip)
  *  superblock, vxfs_inode pair.
  *  Returns the filled VFS inode.
  */
-struct inode *
+static struct inode *
 vxfs_get_fake_inode(struct super_block *sbp, struct vxfs_inode_info *vip)
 {
 	struct inode			*ip = NULL;