Rockbox mail archive
Subject: Re: slow/delaying usb connection to archos/rockbox
From: Linus Nielsen Feltzing (linus_at_haxx.se)
On Sat, 21 Sep 2002 16:29:11 +0200, Vladimir Pantelic wrote:
> Linux could be much quicker though if it would use the information
> in the FS_Info sector of FAT32 where the number of free clusters
> and the last cluster allocated are stored. So Linux has to read tha
> whole FAT to know how much free space there is on the drive.
> The kernel sources say that Linux does ignore this information, I
> have no idea why ?
For what I know, the FS_Info is not guaranteed to be correct. So
Linux doesn't bother, and always reads the while FAT. That approach
works on fast drives, but slow USB drives suffer from it.
Linus Nielsen Feltzing, linus_at_haxx.se on 2002-09-21
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