diff options
| author | Wu Fengguang <fengguang.wu@gmail.com> | 2009-12-03 07:54:25 -0500 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2009-12-03 07:54:25 -0500 |
| commit | b17621fed6aa039387e35f9b4d34d98f213e5673 (patch) | |
| tree | bc755d1aa204518600a6d82dd51d970c685dc68c /include/linux/writeback.h | |
| parent | 951c30d135390a108f102b0f6e3cfa6241f2a1aa (diff) | |
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/linux/writeback.h')
| -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 { | |||
| 49 | unsigned nonblocking:1; /* Don't get stuck on request queues */ | 49 | unsigned nonblocking:1; /* Don't get stuck on request queues */ |
| 50 | unsigned encountered_congestion:1; /* An output: a queue is full */ | 50 | unsigned encountered_congestion:1; /* An output: a queue is full */ |
| 51 | unsigned for_kupdate:1; /* A kupdate writeback */ | 51 | unsigned for_kupdate:1; /* A kupdate writeback */ |
| 52 | unsigned for_background:1; /* A background writeback */ | ||
| 52 | unsigned for_reclaim:1; /* Invoked from the page allocator */ | 53 | unsigned for_reclaim:1; /* Invoked from the page allocator */ |
| 53 | unsigned range_cyclic:1; /* range_start is cyclic */ | 54 | unsigned range_cyclic:1; /* range_start is cyclic */ |
| 54 | unsigned more_io:1; /* more io to be dispatched */ | 55 | unsigned more_io:1; /* more io to be dispatched */ |