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    SubjectRe: [PATCH 041/270] pnfsblock: fix partial page buffer wirte
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    On Mon, 2012-11-26 at 14:55 -0200, Herton Ronaldo Krzesinski wrote:
    > 3.5.7u1 -stable review patch. If anyone has any objections, please let me know.
    >
    > ------------------
    >
    > From: Peng Tao <bergwolf@gmail.com>
    >
    > commit fe6e1e8d9fad86873eb74a26e80a8f91f9e870b5 upstream.
    >
    > If applications use flock to protect its write range, generic NFS
    > will not do read-modify-write cycle at page cache level. Therefore
    > LD should know how to handle non-sector aligned writes. Otherwise
    > there will be data corruption.
    >
    > Signed-off-by: Peng Tao <tao.peng@emc.com>
    > Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
    > Signed-off-by: Herton Ronaldo Krzesinski <herton.krzesinski@canonical.com>
    [...]

    I notice that this fix is missing from 3.4, and will need backporting.

    Ben.

    --
    Ben Hutchings
    Never attribute to conspiracy what can adequately be explained by stupidity.
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