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SubjectRe: [PATCH 1/8] vfs: fix too big f_pos handling
On Wed, Jan 13, 2010 at 10:09:56PM +0800, Wu, Fengguang wrote:
> From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
>
> Now, rw_verify_area() checsk f_pos is negative or not. And if
> negative, returns -EINVAL.
>
> But, some special files as /dev/(k)mem and /proc/<pid>/mem etc..
> has negative offsets. And we can't do any access via read/write
> to the file(device).
>
> This patch introduce a flag S_VERYBIG and allow negative file
> offsets.

Ehh... FMODE_NEG_OFFSET in file->f_mode, perhaps?


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