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ceph: Avoid data inconsistency due to d-cache aliasing in readpage()
authorLi Wang <liwang@ubuntukylin.com>
Wed, 13 Nov 2013 07:22:14 +0000 (15:22 +0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 8 Jan 2014 17:42:11 +0000 (09:42 -0800)
commite0050ac1e4b0a9340e9fc3d9d918799613b72f9a
tree8a1da65f589a36544521d865cc6d03ea90352ce6tree | snapshot
parentbe541ecb66d285c4135c3820113af22ff57d4a0ccommit | diff
ceph: Avoid data inconsistency due to d-cache aliasing in readpage()

commit 56f91aad69444d650237295f68c195b74d888d95 upstream.

If the length of data to be read in readpage() is exactly
PAGE_CACHE_SIZE, the original code does not flush d-cache
for data consistency after finishing reading. This patches fixes
this.

Signed-off-by: Li Wang <liwang@ubuntukylin.com>
Signed-off-by: Sage Weil <sage@inktank.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
fs/ceph/addr.c diff | blob | history
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