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| author | Wu Fengguang <fengguang.wu@gmail.com> | 2009-12-03 13:54:25 +0100 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2009-12-03 13:54:25 +0100 |
| commit | b17621fed6aa039387e35f9b4d34d98f213e5673 (patch) | |
| tree | bc755d1aa204518600a6d82dd51d970c685dc68c /include | |
| parent | 951c30d135390a108f102b0f6e3cfa6241f2a1aa (diff) | |
| download | blackbird-op-linux-b17621fed6aa039387e35f9b4d34d98f213e5673.tar.gz blackbird-op-linux-b17621fed6aa039387e35f9b4d34d98f213e5673.zip | |
writeback: introduce wbc.for_background
It will lower the flush priority for NFS, and maybe more in future.
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Cc: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: Jens Axboe <jens.axboe@oracle.com>
Cc: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/writeback.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/writeback.h b/include/linux/writeback.h index 66ebddcff664..705f01fe413a 100644 --- a/include/linux/writeback.h +++ b/include/linux/writeback.h @@ -49,6 +49,7 @@ struct writeback_control { unsigned nonblocking:1; /* Don't get stuck on request queues */ unsigned encountered_congestion:1; /* An output: a queue is full */ unsigned for_kupdate:1; /* A kupdate writeback */ + unsigned for_background:1; /* A background writeback */ unsigned for_reclaim:1; /* Invoked from the page allocator */ unsigned range_cyclic:1; /* range_start is cyclic */ unsigned more_io:1; /* more io to be dispatched */ |
