Update TODO

TODO

@@ -5,8 +5,6 @@ This is the list of TODO items for SnapRAID.
 
 - Next
 
-* Use a memory mapped file to read the content file
-
 * Integration with MergeFS ?
 
 * Evaluate use of syscall getdents64() instead of readdir(): https://linux.die.net/man/2/getdents64
@@ -15,14 +13,6 @@ This is the list of TODO items for SnapRAID.
 https://github.com/linuxhw/SMART
 https://github.com/linuxhw/EnterpriseDrive
 
-* Support BTRFS subvolumes. Keep track of the subvolumeid, along with the inode,
-and use it when searching/comparing inodes.
-The value 0 can be used for the root volume, like a normal filesystem.
-See: https://github.com/kdave/btrfs-progs/tree/master/libbtrfsutil
-Check also that other tools are doing:
-See: https://github.com/automorphism88/snapraid-btrfs
-See: https://github.com/dim-geo/btrfssnapraid
-
 * A "dependents" output option to [--test-fmt file|disk|path|dependents] for LIST.
 Example, snapraid LIST --test-fmt dependents >FileList_with_dependents.txt
 The goal is a filelist that, for every file, includes full paths to the dependent files
@@ -32,6 +22,9 @@ I created a thread about it here: https://sourceforge.net/p/snapraid/discussion/
 
 - Minor
 
+* Add a new scrub option for checking recent blocks. Like -n, --newer-than.
+Working the opposite of -o-, --older-than
+
 * Add a new -u, --filter-updated command that filters files
 with a different timestamp, to be able to restore only them to the previous state.
 See: https://sourceforge.net/p/snapraid/discussion/1677233/thread/e26e787d/
@@ -165,6 +158,9 @@ Rejected TODO
 
 This is a list of rejected TODO items.
 
+* Use a memory mapped file to read the content file
+- Tried. No speed gain.
+
 * Allow multiple parity files and to coexist with data
 in the same disk.
 This is possible if the data in the same disk uses parity addresses not