38 lines
1.9 KiB
Plaintext
38 lines
1.9 KiB
Plaintext
|
|
- support asynchronous operation -- add a per-fs 'reserved_space' count,
|
|
let each outstanding write reserve the _maximum_ amount of physical
|
|
space it could take. Let GC flush the outstanding writes because the
|
|
reservations will necessarily be pessimistic. With this we could even
|
|
do shared writable mmap, if we can have a fs hook for do_wp_page() to
|
|
make the reservation.
|
|
- disable compression in commit_write()?
|
|
- fine-tune the allocation / GC thresholds
|
|
- chattr support - turning on/off and tuning compression per-inode
|
|
- checkpointing (do we need this? scan is quite fast)
|
|
- make the scan code populate real inodes so read_inode just after
|
|
mount doesn't have to read the flash twice for large files.
|
|
Make this a per-inode option, changable with chattr, so you can
|
|
decide which inodes should be in-core immediately after mount.
|
|
- test, test, test
|
|
|
|
- NAND flash support:
|
|
- almost done :)
|
|
- use bad block check instead of the hardwired byte check
|
|
|
|
- Optimisations:
|
|
- Split writes so they go to two separate blocks rather than just c->nextblock.
|
|
By writing _new_ nodes to one block, and garbage-collected REF_PRISTINE
|
|
nodes to a different one, we can separate clean nodes from those which
|
|
are likely to become dirty, and end up with blocks which are each far
|
|
closer to 100% or 0% clean, hence speeding up later GC progress dramatically.
|
|
- Stop keeping name in-core with struct jffs2_full_dirent. If we keep the hash in
|
|
the full dirent, we only need to go to the flash in lookup() when we think we've
|
|
got a match, and in readdir().
|
|
- Doubly-linked next_in_ino list to allow us to free obsoleted raw_node_refs immediately?
|
|
- Remove size from jffs2_raw_node_frag.
|
|
|
|
dedekind:
|
|
1. __jffs2_flush_wbuf() has a strange 'pad' parameter. Eliminate.
|
|
2. get_sb()->build_fs()->scan() path... Why get_sb() removes scan()'s crap in
|
|
case of failure? scan() does not clean everything. Fix.
|