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- $Id: TODO,v 1.10 2002/09/09 16:31:21 dwmw2 Exp $
- - 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:
- - flush_wbuf using GC to fill it, don't just pad.
- - Deal with write errors. Data don't get lost - we just have to write
- the affected node(s) out again somewhere else.
- - make fsync flush only if actually required
- - make sys_sync() work.
- - reboot notifier
- - timed flush of old wbuf
- - fix magical second arg of jffs2_flush_wbuf(). Split into two or more functions instead.
- - Optimisations:
- - Stop GC from decompressing and immediately recompressing nodes which could
- just be copied intact. (We now keep track of REF_PRISTINE flag. Easy now.)
- - Furthermore, in the case where it could be copied intact we don't even need
- to call iget() for it -- if we use (raw_node_raw->flash_offset & 2) as a flag
- to show a node can be copied intact and it's _not_ in icache, we could just do
- it, fix up the next_in_ino list and move on. We would need a way to find out
- _whether_ it's in icache though -- if it's in icache we also need to do the
- fragment lists, etc. P'raps a flag or pointer in the jffs2_inode_cache could
- help. (We have half of this now.)
- - 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 totlen from jffs2_raw_node_ref? Need to have totlen passed into
- jffs2_mark_node_obsolete(). Can all callers work it out?
- - Remove size from jffs2_raw_node_frag.
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