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Date: Wed, 03 Apr 2013 07:30:08 -0500 From: Rob Landley <rob@...dley.net> To: linux-kernel@...r.kernel.org Subject: [RFC] rootmpfs Attached is my quick and dirty hack to make rootfs be tmpfs when CONFIG_TMPFS is enabled. It can't be this easy or somebody would have done it in the _eight_years_ since https://lkml.org/lkml/2006/7/31/145 Yes, it's got an #ifdef and out of place prototypes. Yes, it manually calls a module init function and compensates by making it reentrant. But it works, and when I "cat /dev/zero > filename" the filesystem fills _up_ instead of panicing the kernel. So now that I've posted the error, would someone please tell me how I _should_ have done it? Rob P.S. If I actually change the filesystem type to a name other than "rootfs", it panics on the way up because various bits of the kernel are looking for that magic name. Sigh. P.P.S. removing MS_NOUSER is actually intentional, there's a local cray patch that does the same thing because otherwise you can't --bind mount directories out of this filesystem, which is a thing they wanted to do.-- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.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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