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| author | Jens Axboe <jaxboe@fusionio.com> | 2011-04-12 10:17:31 +0200 |
|---|---|---|
| committer | Jens Axboe <jaxboe@fusionio.com> | 2011-04-12 10:17:31 +0200 |
| commit | f75664570d8b75469cc468f23c2b27220984983b (patch) | |
| tree | 48f1e9b8576892cab65361e39b874e0e07d3b32a /block/blk-core.c | |
| parent | 188112722cce083c8f1a7d0d84f55c2cd885920c (diff) | |
| download | linux-stable-f75664570d8b75469cc468f23c2b27220984983b.tar.gz linux-stable-f75664570d8b75469cc468f23c2b27220984983b.tar.bz2 linux-stable-f75664570d8b75469cc468f23c2b27220984983b.zip | |
block: add callback function for unplug notification
MD would like to know when a queue is unplugged, so it can flush
it's bitmap writes. Add such a callback.
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Diffstat (limited to 'block/blk-core.c')
| -rw-r--r-- | block/blk-core.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/block/blk-core.c b/block/blk-core.c index 0c0ea10e61ea..76850fc9cf23 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -2672,6 +2672,9 @@ static void queue_unplugged(struct request_queue *q, unsigned int depth) { trace_block_unplug_io(q, depth); __blk_run_queue(q, false); + + if (q->unplugged_fn) + q->unplugged_fn(q); } static void flush_plug_list(struct blk_plug *plug) |