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    SubjectRe: [PATCH 1/3] writeback: introduce wbc.tagged_sync for the WB_SYNC_NONE sync stage
    On Mon 02-05-11 11:17:51, Wu Fengguang wrote:
    > sync(2) is performed in two stages: the WB_SYNC_NONE sync and the
    > WB_SYNC_ALL sync. Tag the first stage with wbc.tagged_sync and do
    > livelock prevention for it, too.
    > Note that writeback_inodes_sb() is called by not only sync(), they are
    > treated the same because the other callers need also need livelock
    > prevention.
    I was thinking about this and could not find any - which other callers
    of writeback_inodes_sb() need the livelock prevention?

    Jan Kara <>
    SUSE Labs, CR

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