1 2 - 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. 8 - 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, changeable 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: 19 - almost done :) 20 - use bad block check instead of the hardwired byte check 21 22 - Optimisations: 23 - 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. 28 - 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? 32 - Remove size from jffs2_raw_node_frag. 33 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. 38