[Ipodlinux-devel] Disk caching?

[Terje W. <wie...@sa...>]

I don't know how things are done at the moment, but as far as I can=20
notice, mp3 files are not cached to memory when played by mp3example=20
(correct me if I'm wrong). Anyway, I thought that other programs as well=20
could benefit from a disk cache, and I thought of the following scheme:

- Create a ramdisk at the maximum size we can spare (is 16MB ok?)
- Write a new fopen() function
- This function will check if there is enough space in the ramdisk for th=
e=20
file
    If there is, it is copied there, and a file descriptor is returned fo=
r=20
the new file.
    If not, a file descriptor is simply returned for the original file.
- Write a new fclose() that, if the file is on the ramdisk, deletes the=20
file

Maybe this is totally useless, and that the kernel already has a much=20
better way of handling disk cache, but I do think this could help with th=
e=20
access time for files, and used with the hdparm fix from Jonathan it coul=
d=20
also help battery time.

Just an idea =3D)

Terje