From: Jeff Dike <jdike@addtoit.com>
To: Allan Graves <allan.graves@oracle.com>
Cc: user-mode-linux-devel@lists.sourceforge.net
Subject: Re: [uml-devel] Clarification of UML and AIO?
Date: Tue, 12 Jul 2005 18:03:27 -0400 [thread overview]
Message-ID: <20050712220327.GB4469@ccure.user-mode-linux.org> (raw)
In-Reply-To: <42D42ED5.4000101@oracle.com>
> Tracing the aio_read() through the UML kernel finally gets me here:
>
> #0 sys_pread64 (fd=3, buf=0xbf7c8f20 "", count=1024, pos=0)
> at fs/read_write.c:354
> #1 0x08062ff8 in execute_syscall_skas (r=0x12374864)
> at arch/um/kernel/skas/syscall_kern.c:29
Finally? That's the very beginning of the system call (or the very end).
The UML block device doesn't know about AIO. All it does is get blocks from
a disk.
Are you sure you're getting kernel AIO and not the libc emulation of it?
Jeff
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next prev parent reply other threads:[~2005-07-12 22:09 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-07-12 20:57 [uml-devel] Clarification of UML and AIO? Allan Graves
2005-07-12 22:03 ` Jeff Dike [this message]
2005-07-13 13:39 ` Blaisorblade
2005-07-13 17:57 ` Allan Graves
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