From: NeilBrown <neilb@suse.de>
Date: Fri, 13 Aug 2010 04:00:56 +0000 (+1000)
Subject: Improve lafs_iget_fs
X-Git-Url: http://git.neil.brown.name/?a=commitdiff_plain;h=cd09f1a230d6cedd0e83d02e4e019aa5d269ceea;p=LaFS.git

Improve lafs_iget_fs

Allow getting inodes in other filesystem.

This isn't quite perfect yet though.

Signed-off-by: NeilBrown <neilb@suse.de>
---

diff --git a/inode.c b/inode.c
index 162735f..a17cd7e 100644
--- a/inode.c
+++ b/inode.c
@@ -204,6 +204,7 @@ struct inode *
 lafs_iget_fs(struct fs *fs, int fsnum, int inum, int async)
 {
 	struct super_block *sb;
+	struct inode *rv;
 
 	sb = fs->prime_sb;
 
@@ -212,8 +213,26 @@ lafs_iget_fs(struct fs *fs, int fsnum, int inum, int async)
 		 * subordinate filesystem
 		 * FIXME
 		 */
-	}
-	return lafs_iget(sb, inum, async);
+		struct inode *filesys;
+
+		printk("get filesys %d\n", fsnum);
+		BUG();
+		filesys = lafs_iget(sb, fsnum, async);
+		if (IS_ERR(filesys))
+			return filesys;
+		if (filesys->i_sb == sb) {
+			/* No mounted fs here.
+			 * Need to mount one FIXME
+			 */
+			BUG();
+			return ERR_PTR(-ENOENT);
+		}
+		printk("get inode %d\n", inum);
+		rv = lafs_iget(filesys->i_sb, inum, async);
+		iput(filesys);
+	} else
+		rv = lafs_iget(sb, inum, async);
+	return rv;
 }
 
 int __must_check