diff options
| author | NeilBrown <neilb@suse.de> | 2012-07-31 09:08:15 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2012-07-31 09:08:15 +0200 |
| commit | 74018dc3063a2c729fc73041c0a9f03aac995920 (patch) | |
| tree | 03f01bca3a2d9f7cf31785fbe74e9ab76bb0d4cd | |
| parent | block: stack unplug (diff) | |
| download | linux-74018dc3063a2c729fc73041c0a9f03aac995920.tar.xz linux-74018dc3063a2c729fc73041c0a9f03aac995920.zip | |
blk: pass from_schedule to non-request unplug functions.
This will allow md/raid to know why the unplug was called,
and will be able to act according - if !from_schedule it
is safe to perform tasks which could themselves schedule.
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
| -rw-r--r-- | block/blk-core.c | 6 | ||||
| -rw-r--r-- | drivers/block/umem.c | 2 | ||||
| -rw-r--r-- | drivers/md/md.c | 2 | ||||
| -rw-r--r-- | drivers/md/md.h | 2 | ||||
| -rw-r--r-- | include/linux/blkdev.h | 2 |
5 files changed, 7 insertions, 7 deletions
diff --git a/block/blk-core.c b/block/blk-core.c index 35bf4fe8234c..4b4dbdfbca89 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -2909,7 +2909,7 @@ static void queue_unplugged(struct request_queue *q, unsigned int depth, } -static void flush_plug_callbacks(struct blk_plug *plug) +static void flush_plug_callbacks(struct blk_plug *plug, bool from_schedule) { LIST_HEAD(callbacks); @@ -2921,7 +2921,7 @@ static void flush_plug_callbacks(struct blk_plug *plug) struct blk_plug_cb, list); list_del(&cb->list); - cb->callback(cb); + cb->callback(cb, from_schedule); } } } @@ -2961,7 +2961,7 @@ void blk_flush_plug_list(struct blk_plug *plug, bool from_schedule) BUG_ON(plug->magic != PLUG_MAGIC); - flush_plug_callbacks(plug); + flush_plug_callbacks(plug, from_schedule); if (list_empty(&plug->list)) return; diff --git a/drivers/block/umem.c b/drivers/block/umem.c index 6ef3489568e3..eb0d8216f557 100644 --- a/drivers/block/umem.c +++ b/drivers/block/umem.c @@ -513,7 +513,7 @@ static void process_page(unsigned long data) } } -static void mm_unplug(struct blk_plug_cb *cb) +static void mm_unplug(struct blk_plug_cb *cb, bool from_schedule) { struct cardinfo *card = cb->data; diff --git a/drivers/md/md.c b/drivers/md/md.c index b493fa417387..db02d2efb76f 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -498,7 +498,7 @@ void md_flush_request(struct mddev *mddev, struct bio *bio) } EXPORT_SYMBOL(md_flush_request); -void md_unplug(struct blk_plug_cb *cb) +void md_unplug(struct blk_plug_cb *cb, bool from_schedule) { struct mddev *mddev = cb->data; md_wakeup_thread(mddev->thread); diff --git a/drivers/md/md.h b/drivers/md/md.h index 8f998e08fb87..f385b038589d 100644 --- a/drivers/md/md.h +++ b/drivers/md/md.h @@ -629,7 +629,7 @@ extern struct bio *bio_alloc_mddev(gfp_t gfp_mask, int nr_iovecs, struct mddev *mddev); extern void md_trim_bio(struct bio *bio, int offset, int size); -extern void md_unplug(struct blk_plug_cb *cb); +extern void md_unplug(struct blk_plug_cb *cb, bool from_schedule); static inline int mddev_check_plugged(struct mddev *mddev) { return !!blk_check_plugged(md_unplug, mddev, diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 607ca228f47e..4e72a9d48232 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -923,7 +923,7 @@ struct blk_plug { #define BLK_MAX_REQUEST_COUNT 16 struct blk_plug_cb; -typedef void (*blk_plug_cb_fn)(struct blk_plug_cb *); +typedef void (*blk_plug_cb_fn)(struct blk_plug_cb *, bool); struct blk_plug_cb { struct list_head list; blk_plug_cb_fn callback; |