Re: include/linux/efs_fs.h declares a symbol

[viro]

> Al Viro: There is no maintainer for efs in the kernel MAINTAINERS
> file.  Is this filesystem orphaned?

Beats me.  As far as I can see, all updates to it were 3rd-party.  It's
either abandoned, or never required specific patches too badly (also
quite possible in this case).

It went into the tree in 2.3.2 and from there to 2.6.0-test6 I see nothing
that would look like maintainer's update.  OTOH, it's read-only and shouldn't
be too badly broken (or hard to keep alive).

Outside of trunk (i.e. in 2.4.16--) we have a backport of global 2.5 change
(sb_bread()) and check for set_blocksize() failures (from Alan).  BTW, the
latter patch is missing in 2.5.  Its equivalent would be

--- B6/fs/efs/super.c	Mon Jun 23 07:23:09 2003
+++ B6-efs/fs/efs/super.c	Wed Oct  1 08:58:35 2003
@@ -218,7 +218,11 @@
 	memset(sb, 0, sizeof(struct efs_sb_info));
  
 	s->s_magic		= EFS_SUPER_MAGIC;
-	sb_set_blocksize(s, EFS_BLOCKSIZE);
+	if (!sb_set_blocksize(s, EFS_BLOCKSIZE)) {
+		printk(KERN_ERR "EFS: device does not support %d byte blocks\n",
+			EFS_BLOCKSIZE);
+		goto out_no_fs_ul;
+	}
   
 	/* read the vh (volume header) block */
 	bh = sb_bread(s, 0);

-
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