Messages in this thread | | | Date | Tue, 8 Jul 2003 18:03:29 +0200 | From | Herbert Poetzl <> | Subject | Re: Max binds |
| |
On Tue, Jul 08, 2003 at 12:00:49PM +0300, Jarmo Järvenpää wrote: > Ville Herva wrote: > > > > See > > >http://groups.google.com/groups?dq=&hl=en&lr=&ie=UTF-8&threadm=linux.kernel.3AE307AD.821AB47C%40linuxjedi.org&rn > > >um=1&prev=/groups%3Fq%3Dg:thl1557665770d%26dq%3D%26hl%3Den%26lr%3D%26ie%3DUTF-8%26selm%3Dlinux.kernel.3AE307AD.8>21AB47C%2540linuxjedi.org > > Hmm, I read the thread and it contained mostly stats on memory usage on > different scenarios. Also, bit outdated discussion (kernel v 2.4.4). No > direct answer though.
I'm no expert on the mount --bind stuff, but as far as I understand it, this is simple (I guess Al Viro would agree *g*) VFS magic, so what happens seems to be the following:
- a new vfsmount entry is created by either copying the old tree or cloning the original mount (if it is a mountpoint) - the required dentries are added to the dcache
so the number of --bind mounts from another mount point will be roughly limited by the number of vfsmount structures possible, and the space available to cache/store dentries ...
I guess there will be some tradeoff when the number of --bind mounts becomes very high, but I guess it is neglectible for normal use ...
I might be totaly wrong, so do not rely on it 8-)
HTH, Herbert
> Jarmo > - > 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/
| |