Messages in this thread | | | Date | Tue, 22 Nov 2011 13:39:51 +0800 | From | Cong Wang <> | Subject | Re: [V2 PATCH] tmpfs: add fallocate support |
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于 2011年11月21日 18:06, Christoph Hellwig 写道: > On Sat, Nov 19, 2011 at 03:14:48PM +0100, Kay Sievers wrote: >> On Sat, Nov 19, 2011 at 11:03, Christoph Hellwig<hch@infradead.org> wrote: >>> On Fri, Nov 18, 2011 at 06:39:50PM +0800, Cong Wang wrote: >>>> It seems that systemd needs tmpfs to support fallocate, >>>> see http://lkml.org/lkml/2011/10/20/275. This patch adds >>>> fallocate support to tmpfs. >>> >>> What for exactly? ??Please explain why preallocating on tmpfs would >>> make any sense. >> >> To be able to safely use mmap(), regarding SIGBUS, on files on the >> /dev/shm filesystem. The glibc fallback loop for -ENOSYS on fallocate >> is just ugly. > > That is the kind of information which needs to be in the changelog. >
I will fix the changelog.
Thanks, Christoph and Kay. -- 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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