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authorQu Wenruo <quwenruo@cn.fujitsu.com>2014-02-28 06:46:04 +0400
committerJosef Bacik <jbacik@fb.com>2014-03-10 23:17:03 +0400
commit1ca08976ae94f3594dd7303584581cf8099ce47e (patch)
tree36266c4bd75ea9807f8936c40d1e13803b3fd83a /fs/btrfs/async-thread.h
parent08a9ff3264181986d1d692a4e6fce3669700c9f8 (diff)
downloadlinux-1ca08976ae94f3594dd7303584581cf8099ce47e.tar.xz
btrfs: Add high priority workqueue support for btrfs_workqueue_struct
Add high priority function to btrfs_workqueue. This is implemented by embedding a btrfs_workqueue into a btrfs_workqueue and use some helper functions to differ the normal priority wq and high priority wq. So the high priority wq is completely independent from the normal workqueue. Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com> Tested-by: David Sterba <dsterba@suse.cz> Signed-off-by: Josef Bacik <jbacik@fb.com>
Diffstat (limited to 'fs/btrfs/async-thread.h')
-rw-r--r--fs/btrfs/async-thread.h5
1 files changed, 4 insertions, 1 deletions
diff --git a/fs/btrfs/async-thread.h b/fs/btrfs/async-thread.h
index 9d8da53f6dd9..fce623cfe3da 100644
--- a/fs/btrfs/async-thread.h
+++ b/fs/btrfs/async-thread.h
@@ -121,6 +121,8 @@ void btrfs_requeue_work(struct btrfs_work *work);
void btrfs_set_work_high_prio(struct btrfs_work *work);
struct btrfs_workqueue_struct;
+/* Internal use only */
+struct __btrfs_workqueue_struct;
struct btrfs_work_struct {
void (*func)(struct btrfs_work_struct *arg);
@@ -130,7 +132,7 @@ struct btrfs_work_struct {
/* Don't touch things below */
struct work_struct normal_work;
struct list_head ordered_list;
- struct btrfs_workqueue_struct *wq;
+ struct __btrfs_workqueue_struct *wq;
unsigned long flags;
};
@@ -145,4 +147,5 @@ void btrfs_queue_work(struct btrfs_workqueue_struct *wq,
struct btrfs_work_struct *work);
void btrfs_destroy_workqueue(struct btrfs_workqueue_struct *wq);
void btrfs_workqueue_set_max(struct btrfs_workqueue_struct *wq, int max);
+void btrfs_set_work_high_priority(struct btrfs_work_struct *work);
#endif