diff options
Diffstat (limited to 'drivers/md/md.h')
| -rw-r--r-- | drivers/md/md.h | 28 |
1 files changed, 5 insertions, 23 deletions
diff --git a/drivers/md/md.h b/drivers/md/md.h index 12215d4..0b1fd3f 100644 --- a/drivers/md/md.h +++ b/drivers/md/md.h @@ -29,26 +29,6 @@ typedef struct mddev_s mddev_t; typedef struct mdk_rdev_s mdk_rdev_t; -/* generic plugging support - like that provided with request_queue, - * but does not require a request_queue - */ -struct plug_handle { - void (*unplug_fn)(struct plug_handle *); - struct timer_list unplug_timer; - struct work_struct unplug_work; - unsigned long unplug_flag; -}; -#define PLUGGED_FLAG 1 -void plugger_init(struct plug_handle *plug, - void (*unplug_fn)(struct plug_handle *)); -void plugger_set_plug(struct plug_handle *plug); -int plugger_remove_plug(struct plug_handle *plug); -static inline void plugger_flush(struct plug_handle *plug) -{ - del_timer_sync(&plug->unplug_timer); - cancel_work_sync(&plug->unplug_work); -} - /* * MD's 'extended' device */ @@ -94,7 +74,7 @@ struct mdk_rdev_s #define In_sync 2 /* device is in_sync with rest of array */ #define WriteMostly 4 /* Avoid reading if at all possible */ #define AutoDetected 7 /* added by auto-detect */ -#define Blocked 8 /* An error occured on an externally +#define Blocked 8 /* An error occurred on an externally * managed array, don't allow writes * until it is cleared */ wait_queue_head_t blocked_wait; @@ -199,6 +179,9 @@ struct mddev_s int delta_disks, new_level, new_layout; int new_chunk_sectors; + atomic_t plug_cnt; /* If device is expecting + * more bios soon. + */ struct mdk_thread_s *thread; /* management thread */ struct mdk_thread_s *sync_thread; /* doing resync or reconstruct */ sector_t curr_resync; /* last block scheduled */ @@ -336,7 +319,6 @@ struct mddev_s struct list_head all_mddevs; struct attribute_group *to_remove; - struct plug_handle *plug; /* if used by personality */ struct bio_set *bio_set; @@ -516,7 +498,6 @@ extern int md_integrity_register(mddev_t *mddev); extern void md_integrity_add_rdev(mdk_rdev_t *rdev, mddev_t *mddev); extern int strict_strtoul_scaled(const char *cp, unsigned long *res, int scale); extern void restore_bitmap_write_access(struct file *file); -extern void md_unplug(mddev_t *mddev); extern void mddev_init(mddev_t *mddev); extern int md_run(mddev_t *mddev); @@ -530,4 +511,5 @@ extern struct bio *bio_clone_mddev(struct bio *bio, gfp_t gfp_mask, mddev_t *mddev); extern struct bio *bio_alloc_mddev(gfp_t gfp_mask, int nr_iovecs, mddev_t *mddev); +extern int mddev_check_plugged(mddev_t *mddev); #endif /* _MD_MD_H */ |