This patch-set fixes the following two problems:
1. Need to use ctx->completion_lock to protect ring pages
from being mis-written while migration.
2. Need memory barrier to ensure memory copy is done before
ctx->ring_pages[] is updated.
NOTE: AIO ring page migration was implemented since Linux 3.12.
So we need to merge these two patches into 3.12 stable tree.
Tang Chen (2):
aio, memory-hotplug: Fix confliction when migrating and accessing ring
pages.
aio, mem-hotplug: Add memory barrier to aio ring page migration.
fs/aio.c | 41 +++++++++++++++++++++++++++++++++++++++++
1 file changed, 41 insertions(+)
--
1.8.3.1
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