Messages in this thread | | | Date | Thu, 6 Aug 2015 09:57:59 -0400 | From | Tejun Heo <> | Subject | Re: [PATCH] sysfs: correctly handle short reads on PREALLOC attrs. |
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On Thu, Aug 06, 2015 at 08:27:55AM +1000, NeilBrown wrote: > > > attributes declared with __ATTR_PREALLOC use sysfs_kf_read() > which ignores the 'count' arg. > So a 1-byte read request can return more bytes than that. > > This is seen with the 'dash' shell when 'read' is used on > some 'md' sysfs attributes. > > So only return the 'min' of count and the attribute length. > > Signed-off-by: NeilBrown <neilb@suse.com>
Acked-by: Tejun Heo <tj@kernel.org>
Thanks.
-- tejun
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