From: Manfred Spraul <manfred@colorfullife.com>
To: linux-kernel@vger.kernel.org
Subject: lock_kiovec question
Date: Sat, 29 Sep 2001 11:09:03 +0200 [thread overview]
Message-ID: <3BB58FAF.D1AF2D25@colorfullife.com> (raw)
lock_kiovec tries to lock each page in the kiovec, and fails if it can't
lock one of the pages.
What if the zero page is mapped multiple times in the kiobuf?
AFAICS map_user_pages doesn't break zero page mappings if it's called
with rw==WRITE (i.e write to disk, read from kiobuf)
--
Manfred
next reply other threads:[~2001-09-29 9:08 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-09-29 9:09 Manfred Spraul [this message]
2001-09-29 17:51 ` lock_kiovec question Benjamin LaHaise
2001-10-03 16:30 ` Stephen C. Tweedie
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