Messages in this thread | | | Date | Wed, 17 Nov 2004 10:11:05 -0800 | From | Greg KH <> | Subject | Re: [PATCH] [Request for inclusion] Filesystem in Userspace |
| |
On Wed, Nov 17, 2004 at 06:56:13PM +0100, Miklos Szeredi wrote: > > > /sys/fs used to exist for for some. Moreover, /sys/fs/foofs/ was added > > automagically when foofs file system type was registered. But it was > > ultimately removed, because nobody took the time to fix all races > > between accessing /sys/fs/foofs/gadget and > > umount/filesystem-module-unloading. > > I don't see why this would be any harder for filesystem code than for > other types of drivers. Maybe someone can enlighten me.
Think about putting the /sys/sysfs entry into the tree before sysfs has been fully initialized :)
There are other fun races that Al Viro pointed out dealing with superblock lifetimes from what I remember.
> Anyway, I can try to clean it up: remove all the racy bits and keep > what I need (which is mainly just the /sys/fs directory). Where can I > find the most recent version of this?
Look through the 2.5 kernel series, it was in there for a while.
But don't really worry about it, just create /sys/fs/ and use it to put your own stuff in it if you want. Don't try to recreate the old, buggy stuff :)
Good luck,
greg k-h - 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/
| |