Messages in this thread | | | From | "Hua Zhong" <> | Subject | RE: PATCH: allow percentile size of tmpfs (2.5.66 / 2.4.20-pre2) | Date | Tue, 1 Apr 2003 23:55:26 -0800 |
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There is at least one case that ramfs works but tmpfs doesn't.
If you have a loopback file A, and the following will fail in 2.4:
mount -t tmpfs tmpfs /mnt/tmp extract file A to /mnt/tmp/A mount -t ext2 -o loop /mnt/tmp /mnt/loopback
You'll get "ioctl: LOOP_SET_FD: Invalid argument".
But ramfs works great.
Is this a bug or feature?
> Uuh, now you are beating me with my old statements ;-) > > tmpfs has the drawback that the in memory data structures are bigger > than ramfs'. But the core of tmpfs is always compiled in for anonymous > shared memory. And it has size limits. So you are probably right, that > tmpfs is the right choice. > > But you are arguing at a corner case. tmpfs is IMHO more often used on > machines with swap and (at least for me) the use of swap as store for > temporary data is the big point to use tmpfs. So the percentile should > take swap into account. > > Greetings > Christoph > > > - > 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/
- 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/
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