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authorNeilBrown <neilb@suse.de>2012-07-31 09:08:14 +0200
committerJens Axboe <axboe@kernel.dk>2012-07-31 09:08:14 +0200
commit9cbb17508808f8a6bdd83354b61e126ac4fa6fed (patch)
treebc797d1b5cd829751a333115e6e6d52799fb6df2 /drivers/md/md.h
parent0021b7bc045e4b0b85d8c53614342aaf84ca96a5 (diff)
downloadlinux-9cbb17508808f8a6bdd83354b61e126ac4fa6fed.tar.bz2
blk: centralize non-request unplug handling.
Both md and umem has similar code for getting notified on an blk_finish_plug event. Centralize this code in block/ and allow each driver to provide its distinctive difference. Signed-off-by: NeilBrown <neilb@suse.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/md/md.h')
-rw-r--r--drivers/md/md.h8
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/md/md.h b/drivers/md/md.h
index 91786c46b85c..8f998e08fb87 100644
--- a/drivers/md/md.h
+++ b/drivers/md/md.h
@@ -627,6 +627,12 @@ extern struct bio *bio_clone_mddev(struct bio *bio, gfp_t gfp_mask,
struct mddev *mddev);
extern struct bio *bio_alloc_mddev(gfp_t gfp_mask, int nr_iovecs,
struct mddev *mddev);
-extern int mddev_check_plugged(struct mddev *mddev);
extern void md_trim_bio(struct bio *bio, int offset, int size);
+
+extern void md_unplug(struct blk_plug_cb *cb);
+static inline int mddev_check_plugged(struct mddev *mddev)
+{
+ return !!blk_check_plugged(md_unplug, mddev,
+ sizeof(struct blk_plug_cb));
+}
#endif /* _MD_MD_H */