Messages in this thread |  | | | Date | Fri, 04 Jul 2003 13:57:19 +0200 | | From | Sancho Dauskardt <> | | Subject | FAT statfs loop abort on read-error |
| |
Hi all,
i've written to the current FAT maintainer (Gordon Chaffee) about this, but he's no longer active, so:
While working in the usb-sotrage area (mostly with removeable media, eg. CompactFlash in USB-Readers), i've come across a litte odd behaviour:
when calling statfs on a volume that has been removed (without umount) fat_statfs() will attempt to read all sectors of the fat table quite a few times (depending on the fat type, eg. FAT16 --> 256 times).
eg: 1. mount /dev/sda1 /mnt/cf 2. remove card 3. df
on my system, for a 16 MB CompactFlash formated with FAT-16 this takes 47 seconds.
Possible solution: 1. let default_fat_access return something like -2 on 'can't read' error. 2. Abort stafs loop on error. 3. return -EIO
This would break mode fat_access calls. I could make a patch, but I don't know what's going on with those cvf extensions (which seem to replace fat_access). Is dmsdos dead / can we ignore it ? Somewhere in the list archives, I found comments about the cvf stuff being completely removed ?
Thanks, - sda
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
|  |