Rough plan.

git-svn-id: https://svn.openfmi.net/ext3fs/trunk/ext2fs@198 26a76c3e-10c4-0310-a35e-d7a04f130ebf

1 files changed, 88 insertions, 14 deletions

diff --git a/ext2fs-fosdem2005.mgp b/ext2fs-fosdem2005.mgp
index c8659801..9d536a27 100644
--- a/ext2fs-fosdem2005.mgp
+++ b/ext2fs-fosdem2005.mgp
@@ -1,26 +1,35 @@
 %include "default.mgp"
-%%
-%%
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+#
+#
+#
 %page
+%nodefault
+%center, font "thick", size 5
+
+
+
 
 Supporting Larger File Systems
 
 
-	A bit of history
 
-	Internals
+
+%font "standard", size 4
+Ognyan Kulev
+<ogi@fmi.uni-sofia.bg>
 
 %page
 
 Need for Supporting Larger File Systems
 
 
-	Hurd 0.2 was released in 1997 and it was very buggy
+	Active development during 1995-1997.
+
+	Hurd 0.2 was released in 1997 and it was very buggy.
 
-	Many bugs are fixed since then and the system becomes more and more stable
+	Many bugs are fixed since then.
 
-	The 2G limit for ext2 file systems becomes more and more annoying
+	The 2G limit for ext2 file systems becomes more and more annoying.
 
 %page
 
@@ -35,21 +44,86 @@ Timeline
 
 %page
 
-Original ext2fs
+User pager in GNU Mach
 
+(xfig missing)
 
-BLA-BLA
+%page
+
+Current ext2fs
+
+(xfig missing)
 
 %page
 
-Other Proposals
+ext2fs API for accessing blocks
 
+	bptr, boffs
 
-BLA-BLA
+	inode and group descriptor tables as arrays
 
 %page
 
-What I did
+Patched ext2fs
+
+	Always use buffer guarded by disk_cache_block_ref and disk_cache_block_deref
+
+(xfig figure)
+
+%page
+
+When unassociated block is requested
+
+%font "typewriter", size 4, cont
+retry:
+  i=hint;
+  while ()
+    {}
+  goto retry;
+
+%page
+
+Necessity for Notification
+
+Precious pages in Mach
+
+Notification is essential for reassociation
+
+Mach sometimes doesn't notify!
+
+%page
+
+Concurrency in Reassociation
+
+...
+
+%page
+
+Changes in Pokel
+
+List of changed buffers 
+
+Operation for writing all changes
+
+Now should handle reference counts
+
+%page
+
+libpager optimization
+
+...
+
+%page
+
+Future directions
+
+Block sizes of 1K and 2K
+
+Run-time option for buffer array size
+
+Compile-time option (or auto-detection) for mapping the whole store
+
+Upgrade of UFS 
 
+Extended attributes (EAs) and Access control lists (ACLs)
 
-Ignore everybody :-)