From: Christopher Lameter <cl@linux.com>
To: Alexey Kardashevskiy <aik@ozlabs.ru>
Cc: dave@stgolabs.net, jack@suse.cz, kvm@vger.kernel.org,
jgg@ziepe.ca, linux-fpga@vger.kernel.org, atull@kernel.org,
linux-kernel@vger.kernel.org, kvm-ppc@vger.kernel.org,
Daniel Jordan <daniel.m.jordan@oracle.com>,
linux-mm@kvack.org, alex.williamson@redhat.com, mdf@kernel.org,
akpm@linux-foundation.org, linuxppc-dev@lists.ozlabs.org,
hao.wu@intel.com
Subject: Re: [PATCH 2/5] vfio/spapr_tce: use pinned_vm instead of locked_vm to account pinned pages
Date: Tue, 12 Feb 2019 16:50:11 +0000 [thread overview]
Message-ID: <01000168e29daf0a-cb3a9394-e3dd-4d88-ad3c-31df1f9ec052-000000@email.amazonses.com> (raw)
In-Reply-To: <ee4d14db-05c3-6208-503c-16e287fa78eb@ozlabs.ru>
On Tue, 12 Feb 2019, Alexey Kardashevskiy wrote:
> Now it is 3 independent accesses (actually 4 but the last one is
> diagnostic) with no locking around them. Why do not we need a lock
> anymore precisely? Thanks,
Updating a regular counter is racy and requires a lock. It was converted
to be an atomic which can be incremented without a race.
next prev parent reply other threads:[~2019-02-12 16:52 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-11 22:44 [PATCH 0/5] use pinned_vm instead of locked_vm to account pinned pages Daniel Jordan
2019-02-11 22:44 ` [PATCH 1/5] vfio/type1: " Daniel Jordan
2019-02-11 22:56 ` Jason Gunthorpe
2019-02-11 23:11 ` Daniel Jordan
2019-02-12 18:41 ` Alex Williamson
2019-02-13 0:26 ` Daniel Jordan
2019-02-13 20:03 ` Alex Williamson
2019-02-13 23:07 ` Jason Gunthorpe
2019-02-14 1:46 ` Daniel Jordan
2019-02-11 22:44 ` [PATCH 2/5] vfio/spapr_tce: " Daniel Jordan
2019-02-12 6:56 ` Alexey Kardashevskiy
2019-02-12 16:50 ` Christopher Lameter [this message]
2019-02-12 17:18 ` Daniel Jordan
2019-02-13 0:37 ` Alexey Kardashevskiy
2019-02-12 18:56 ` Alex Williamson
2019-02-13 0:34 ` Alexey Kardashevskiy
2019-02-11 22:44 ` [PATCH 3/5] fpga/dlf/afu: " Daniel Jordan
2019-02-11 22:44 ` [PATCH 4/5] powerpc/mmu: " Daniel Jordan
2019-02-13 1:14 ` kbuild test robot
2019-02-11 22:44 ` [PATCH 5/5] kvm/book3s: " Daniel Jordan
2019-02-13 1:43 ` kbuild test robot
2019-02-11 22:54 ` [PATCH 0/5] " Jason Gunthorpe
2019-02-11 23:15 ` Daniel Jordan
2019-02-14 1:53 ` Ira Weiny
2019-02-14 6:00 ` Jason Gunthorpe
2019-02-14 19:33 ` Ira Weiny
2019-02-14 20:12 ` Jason Gunthorpe
2019-02-14 21:46 ` Ira Weiny
2019-02-14 22:16 ` Jason Gunthorpe
2019-02-15 15:26 ` Christopher Lameter
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