blob: 5d3ea4070f01712396b74ddd57868e0150ff3f9c [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001
Artem B. Bityutskiy733802d2005-09-22 12:25:00 +01002 - support asynchronous operation -- add a per-fs 'reserved_space' count,
3 let each outstanding write reserve the _maximum_ amount of physical
4 space it could take. Let GC flush the outstanding writes because the
5 reservations will necessarily be pessimistic. With this we could even
6 do shared writable mmap, if we can have a fs hook for do_wp_page() to
7 make the reservation.
Linus Torvalds1da177e2005-04-16 15:20:36 -07008 - disable compression in commit_write()?
9 - fine-tune the allocation / GC thresholds
10 - chattr support - turning on/off and tuning compression per-inode
11 - checkpointing (do we need this? scan is quite fast)
12 - make the scan code populate real inodes so read_inode just after
13 mount doesn't have to read the flash twice for large files.
14 Make this a per-inode option, changable with chattr, so you can
15 decide which inodes should be in-core immediately after mount.
16 - test, test, test
17
18 - NAND flash support:
Artem B. Bityutskiy733802d2005-09-22 12:25:00 +010019 - almost done :)
20 - use bad block check instead of the hardwired byte check
Linus Torvalds1da177e2005-04-16 15:20:36 -070021
22 - Optimisations:
Artem B. Bityutskiy733802d2005-09-22 12:25:00 +010023 - Split writes so they go to two separate blocks rather than just c->nextblock.
24 By writing _new_ nodes to one block, and garbage-collected REF_PRISTINE
25 nodes to a different one, we can separate clean nodes from those which
26 are likely to become dirty, and end up with blocks which are each far
27 closer to 100% or 0% clean, hence speeding up later GC progress dramatically.
Linus Torvalds1da177e2005-04-16 15:20:36 -070028 - Stop keeping name in-core with struct jffs2_full_dirent. If we keep the hash in
29 the full dirent, we only need to go to the flash in lookup() when we think we've
30 got a match, and in readdir().
31 - Doubly-linked next_in_ino list to allow us to free obsoleted raw_node_refs immediately?
Linus Torvalds1da177e2005-04-16 15:20:36 -070032 - Remove size from jffs2_raw_node_frag.
Artem B. Bityutskiy733802d2005-09-22 12:25:00 +010033
34dedekind:
351. __jffs2_flush_wbuf() has a strange 'pad' parameter. Eliminate.
362. get_sb()->build_fs()->scan() path... Why get_sb() removes scan()'s crap in
37 case of failure? scan() does not clean everything. Fix.