linux-ext4 - Re: Getting direct support for fallocate(2) into glibc

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Date:	Tue, 9 Dec 2008 12:31:28 -0500
From:	Theodore Tso <tytso@....EDU>
To:	Eric Sandeen <sandeen@...hat.com>
Cc:	linux-ext4@...r.kernel.org
Subject: Re: Getting direct support for fallocate(2) into glibc

On Tue, Dec 09, 2008 at 10:58:19AM -0600, Eric Sandeen wrote:
> ... oh, ok, but plain old fallocate() isn't yet hooked up, odd.
> 
> # gcc -o test-fallocate test-fallocate.c
> /tmp/ccQTk6an.o: In function `main':
> test-fallocate.c:(.text+0x3e): undefined reference to `fallocate'
> 
> Especially odd because we have a man page shipping, but no actual
> implemented interface  :)  OK, I'll go bug people.

Yep, that was what I was referring to.  We have the fallocate(2) man
page because Michael Kerrisk has documented the userspace/kernel
interface.  But that doesn't necessarily mean that glibc has wired up
the interface.  (Sigh, we had been able to push this issue *before*
glibc 2.9 shipped last month, but we were all too busy....)

						- Ted
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