X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=fs%2Fqnx4%2Finode.c;h=2aad1044b84ccf1342578cd66407ef88e406cf1d;hb=d9ecdb282c91952796b7542c4f57fd6de6948d7b;hp=1bc8d873a9e17ff20cfa7e550ed3b947ca87500a;hpb=e6f194d8f6f50da6837af637b2fd839c34185f7a;p=linux-2.6

diff --git a/fs/qnx4/inode.c b/fs/qnx4/inode.c
index 1bc8d873a9..2aad1044b8 100644
--- a/fs/qnx4/inode.c
+++ b/fs/qnx4/inode.c
@@ -125,7 +125,6 @@ static int qnx4_write_inode(struct inode *inode, int unused)
 static void qnx4_put_super(struct super_block *sb);
 static struct inode *qnx4_alloc_inode(struct super_block *sb);
 static void qnx4_destroy_inode(struct inode *inode);
-static void qnx4_read_inode(struct inode *);
 static int qnx4_remount(struct super_block *sb, int *flags, char *data);
 static int qnx4_statfs(struct dentry *, struct kstatfs *);
 
@@ -133,7 +132,6 @@ static const struct super_operations qnx4_sops =
 {
 	.alloc_inode	= qnx4_alloc_inode,
 	.destroy_inode	= qnx4_destroy_inode,
-	.read_inode	= qnx4_read_inode,
 	.put_super	= qnx4_put_super,
 	.statfs		= qnx4_statfs,
 	.remount_fs	= qnx4_remount,
@@ -357,6 +355,7 @@ static int qnx4_fill_super(struct super_block *s, void *data, int silent)
 	struct inode *root;
 	const char *errmsg;
 	struct qnx4_sb_info *qs;
+	int ret = -EINVAL;
 
 	qs = kzalloc(sizeof(struct qnx4_sb_info), GFP_KERNEL);
 	if (!qs)
@@ -396,12 +395,14 @@ static int qnx4_fill_super(struct super_block *s, void *data, int silent)
 	}
 
  	/* does root not have inode number QNX4_ROOT_INO ?? */
- 	root = iget(s, QNX4_ROOT_INO * QNX4_INODES_PER_BLOCK);
- 	if (!root) {
+	root = qnx4_iget(s, QNX4_ROOT_INO * QNX4_INODES_PER_BLOCK);
+	if (IS_ERR(root)) {
  		printk("qnx4: get inode failed\n");
+		ret = PTR_ERR(root);
  		goto out;
  	}
 
+	ret = -ENOMEM;
  	s->s_root = d_alloc_root(root);
  	if (s->s_root == NULL)
  		goto outi;
@@ -417,7 +418,7 @@ static int qnx4_fill_super(struct super_block *s, void *data, int silent)
       outnobh:
 	kfree(qs);
 	s->s_fs_info = NULL;
-	return -EINVAL;
+	return ret;
 }
 
 static void qnx4_put_super(struct super_block *sb)
@@ -433,16 +434,21 @@ static int qnx4_writepage(struct page *page, struct writeback_control *wbc)
 {
 	return block_write_full_page(page,qnx4_get_block, wbc);
 }
+
 static int qnx4_readpage(struct file *file, struct page *page)
 {
 	return block_read_full_page(page,qnx4_get_block);
 }
-static int qnx4_prepare_write(struct file *file, struct page *page,
-			      unsigned from, unsigned to)
+
+static int qnx4_write_begin(struct file *file, struct address_space *mapping,
+			loff_t pos, unsigned len, unsigned flags,
+			struct page **pagep, void **fsdata)
 {
-	struct qnx4_inode_info *qnx4_inode = qnx4_i(page->mapping->host);
-	return cont_prepare_write(page, from, to, qnx4_get_block,
-				  &qnx4_inode->mmu_private);
+	struct qnx4_inode_info *qnx4_inode = qnx4_i(mapping->host);
+	*pagep = NULL;
+	return cont_write_begin(file, mapping, pos, len, flags, pagep, fsdata,
+				qnx4_get_block,
+				&qnx4_inode->mmu_private);
 }
 static sector_t qnx4_bmap(struct address_space *mapping, sector_t block)
 {
@@ -452,34 +458,43 @@ static const struct address_space_operations qnx4_aops = {
 	.readpage	= qnx4_readpage,
 	.writepage	= qnx4_writepage,
 	.sync_page	= block_sync_page,
-	.prepare_write	= qnx4_prepare_write,
-	.commit_write	= generic_commit_write,
+	.write_begin	= qnx4_write_begin,
+	.write_end	= generic_write_end,
 	.bmap		= qnx4_bmap
 };
 
-static void qnx4_read_inode(struct inode *inode)
+struct inode *qnx4_iget(struct super_block *sb, unsigned long ino)
 {
 	struct buffer_head *bh;
 	struct qnx4_inode_entry *raw_inode;
-	int block, ino;
-	struct super_block *sb = inode->i_sb;
-	struct qnx4_inode_entry *qnx4_inode = qnx4_raw_inode(inode);
+	int block;
+	struct qnx4_inode_entry *qnx4_inode;
+	struct inode *inode;
 
-	ino = inode->i_ino;
+	inode = iget_locked(sb, ino);
+	if (!inode)
+		return ERR_PTR(-ENOMEM);
+	if (!(inode->i_state & I_NEW))
+		return inode;
+
+	qnx4_inode = qnx4_raw_inode(inode);
 	inode->i_mode = 0;
 
 	QNX4DEBUG(("Reading inode : [%d]\n", ino));
 	if (!ino) {
-		printk("qnx4: bad inode number on dev %s: %d is out of range\n",
+		printk(KERN_ERR "qnx4: bad inode number on dev %s: %lu is "
+				"out of range\n",
 		       sb->s_id, ino);
-		return;
+		iget_failed(inode);
+		return ERR_PTR(-EIO);
 	}
 	block = ino / QNX4_INODES_PER_BLOCK;
 
 	if (!(bh = sb_bread(sb, block))) {
 		printk("qnx4: major problem: unable to read inode from dev "
 		       "%s\n", sb->s_id);
-		return;
+		iget_failed(inode);
+		return ERR_PTR(-EIO);
 	}
 	raw_inode = ((struct qnx4_inode_entry *) bh->b_data) +
 	    (ino % QNX4_INODES_PER_BLOCK);
@@ -510,9 +525,16 @@ static void qnx4_read_inode(struct inode *inode)
 		inode->i_op = &page_symlink_inode_operations;
 		inode->i_mapping->a_ops = &qnx4_aops;
 		qnx4_i(inode)->mmu_private = inode->i_size;
-	} else
-		printk("qnx4: bad inode %d on dev %s\n",ino,sb->s_id);
+	} else {
+		printk(KERN_ERR "qnx4: bad inode %lu on dev %s\n",
+			ino, sb->s_id);
+		iget_failed(inode);
+		brelse(bh);
+		return ERR_PTR(-EIO);
+	}
 	brelse(bh);
+	unlock_new_inode(inode);
+	return inode;
 }
 
 static struct kmem_cache *qnx4_inode_cachep;
@@ -531,8 +553,7 @@ static void qnx4_destroy_inode(struct inode *inode)
 	kmem_cache_free(qnx4_inode_cachep, qnx4_i(inode));
 }
 
-static void init_once(void *foo, struct kmem_cache * cachep,
-		      unsigned long flags)
+static void init_once(void *foo)
 {
 	struct qnx4_inode_info *ei = (struct qnx4_inode_info *) foo;