diff options
Diffstat (limited to 'drivers/block/drbd/drbd_int.h')
| -rw-r--r-- | drivers/block/drbd/drbd_int.h | 58 |
1 files changed, 40 insertions, 18 deletions
diff --git a/drivers/block/drbd/drbd_int.h b/drivers/block/drbd/drbd_int.h index 7a1cf7eaa..4cb8f21ff 100644 --- a/drivers/block/drbd/drbd_int.h +++ b/drivers/block/drbd/drbd_int.h @@ -41,6 +41,7 @@ #include <linux/backing-dev.h> #include <linux/genhd.h> #include <linux/idr.h> +#include <linux/dynamic_debug.h> #include <net/tcp.h> #include <linux/lru_cache.h> #include <linux/prefetch.h> @@ -468,9 +469,15 @@ enum { /* this is/was a write request */ __EE_WRITE, + /* this is/was a write same request */ + __EE_WRITE_SAME, + /* this originates from application on peer * (not some resync or verify or other DRBD internal request) */ __EE_APPLICATION, + + /* If it contains only 0 bytes, send back P_RS_DEALLOCATED */ + __EE_RS_THIN_REQ, }; #define EE_CALL_AL_COMPLETE_IO (1<<__EE_CALL_AL_COMPLETE_IO) #define EE_MAY_SET_IN_SYNC (1<<__EE_MAY_SET_IN_SYNC) @@ -484,7 +491,9 @@ enum { #define EE_IN_INTERVAL_TREE (1<<__EE_IN_INTERVAL_TREE) #define EE_SUBMITTED (1<<__EE_SUBMITTED) #define EE_WRITE (1<<__EE_WRITE) +#define EE_WRITE_SAME (1<<__EE_WRITE_SAME) #define EE_APPLICATION (1<<__EE_APPLICATION) +#define EE_RS_THIN_REQ (1<<__EE_RS_THIN_REQ) /* flag bits per device */ enum { @@ -1123,6 +1132,7 @@ extern int drbd_send_ov_request(struct drbd_peer_device *, sector_t sector, int extern int drbd_send_bitmap(struct drbd_device *device); extern void drbd_send_sr_reply(struct drbd_peer_device *, enum drbd_state_rv retcode); extern void conn_send_sr_reply(struct drbd_connection *connection, enum drbd_state_rv retcode); +extern int drbd_send_rs_deallocated(struct drbd_peer_device *, struct drbd_peer_request *); extern void drbd_backing_dev_free(struct drbd_device *device, struct drbd_backing_dev *ldev); extern void drbd_device_cleanup(struct drbd_device *device); void drbd_print_uuids(struct drbd_device *device, const char *text); @@ -1327,14 +1337,14 @@ struct bm_extent { #endif #endif -/* BIO_MAX_SIZE is 256 * PAGE_SIZE, +/* Estimate max bio size as 256 * PAGE_SIZE, * so for typical PAGE_SIZE of 4k, that is (1<<20) Byte. * Since we may live in a mixed-platform cluster, * we limit us to a platform agnostic constant here for now. * A followup commit may allow even bigger BIO sizes, * once we thought that through. */ #define DRBD_MAX_BIO_SIZE (1U << 20) -#if DRBD_MAX_BIO_SIZE > BIO_MAX_SIZE +#if DRBD_MAX_BIO_SIZE > (BIO_MAX_PAGES << PAGE_SHIFT) #error Architecture not supported: DRBD_MAX_BIO_SIZE > BIO_MAX_SIZE #endif #define DRBD_MAX_BIO_SIZE_SAFE (1U << 12) /* Works always = 4k */ @@ -1342,11 +1352,11 @@ struct bm_extent { #define DRBD_MAX_SIZE_H80_PACKET (1U << 15) /* Header 80 only allows packets up to 32KiB data */ #define DRBD_MAX_BIO_SIZE_P95 (1U << 17) /* Protocol 95 to 99 allows bios up to 128KiB */ -/* For now, don't allow more than one activity log extent worth of data - * to be discarded in one go. We may need to rework drbd_al_begin_io() - * to allow for even larger discard ranges */ -#define DRBD_MAX_DISCARD_SIZE AL_EXTENT_SIZE -#define DRBD_MAX_DISCARD_SECTORS (DRBD_MAX_DISCARD_SIZE >> 9) +/* For now, don't allow more than half of what we can "activate" in one + * activity log transaction to be discarded in one go. We may need to rework + * drbd_al_begin_io() to allow for even larger discard ranges */ +#define DRBD_MAX_BATCH_BIO_SIZE (AL_UPDATES_PER_TRANSACTION/2*AL_EXTENT_SIZE) +#define DRBD_MAX_BBIO_SECTORS (DRBD_MAX_BATCH_BIO_SIZE >> 9) extern int drbd_bm_init(struct drbd_device *device); extern int drbd_bm_resize(struct drbd_device *device, sector_t sectors, int set_new_bits); @@ -1369,6 +1379,7 @@ extern int drbd_bm_e_weight(struct drbd_device *device, unsigned long enr); extern int drbd_bm_read(struct drbd_device *device) __must_hold(local); extern void drbd_bm_mark_for_writeout(struct drbd_device *device, int page_nr); extern int drbd_bm_write(struct drbd_device *device) __must_hold(local); +extern void drbd_bm_reset_al_hints(struct drbd_device *device) __must_hold(local); extern int drbd_bm_write_hinted(struct drbd_device *device) __must_hold(local); extern int drbd_bm_write_lazy(struct drbd_device *device, unsigned upper_idx) __must_hold(local); extern int drbd_bm_write_all(struct drbd_device *device) __must_hold(local); @@ -1483,12 +1494,14 @@ enum determine_dev_size { extern enum determine_dev_size drbd_determine_dev_size(struct drbd_device *, enum dds_flags, struct resize_parms *) __must_hold(local); extern void resync_after_online_grow(struct drbd_device *); -extern void drbd_reconsider_max_bio_size(struct drbd_device *device, struct drbd_backing_dev *bdev); +extern void drbd_reconsider_queue_parameters(struct drbd_device *device, + struct drbd_backing_dev *bdev, struct o_qlim *o); extern enum drbd_state_rv drbd_set_role(struct drbd_device *device, enum drbd_role new_role, int force); extern bool conn_try_outdate_peer(struct drbd_connection *connection); extern void conn_try_outdate_peer_async(struct drbd_connection *connection); +extern enum drbd_peer_state conn_khelper(struct drbd_connection *connection, char *cmd); extern int drbd_khelper(struct drbd_device *device, char *cmd); /* drbd_worker.c */ @@ -1507,7 +1520,7 @@ extern int drbd_resync_finished(struct drbd_device *device); extern void *drbd_md_get_buffer(struct drbd_device *device, const char *intent); extern void drbd_md_put_buffer(struct drbd_device *device); extern int drbd_md_sync_page_io(struct drbd_device *device, - struct drbd_backing_dev *bdev, sector_t sector, int rw); + struct drbd_backing_dev *bdev, sector_t sector, int op); extern void drbd_ov_out_of_sync_found(struct drbd_device *, sector_t, int); extern void wait_until_done_or_force_detached(struct drbd_device *device, struct drbd_backing_dev *bdev, unsigned int *done); @@ -1548,6 +1561,8 @@ extern void start_resync_timer_fn(unsigned long data); extern void drbd_endio_write_sec_final(struct drbd_peer_request *peer_req); /* drbd_receiver.c */ +extern int drbd_issue_discard_or_zero_out(struct drbd_device *device, + sector_t start, unsigned int nr_sectors, bool discard); extern int drbd_receiver(struct drbd_thread *thi); extern int drbd_ack_receiver(struct drbd_thread *thi); extern void drbd_send_ping_wf(struct work_struct *ws); @@ -1557,11 +1572,11 @@ extern bool drbd_rs_should_slow_down(struct drbd_device *device, sector_t sector bool throttle_if_app_is_waiting); extern int drbd_submit_peer_request(struct drbd_device *, struct drbd_peer_request *, const unsigned, - const int); + const unsigned, const int); extern int drbd_free_peer_reqs(struct drbd_device *, struct list_head *); extern struct drbd_peer_request *drbd_alloc_peer_req(struct drbd_peer_device *, u64, sector_t, unsigned int, - bool, + unsigned int, gfp_t) __must_hold(local); extern void __drbd_free_peer_req(struct drbd_device *, struct drbd_peer_request *, int); @@ -1635,8 +1650,6 @@ void drbd_bump_write_ordering(struct drbd_resource *resource, struct drbd_backin /* drbd_proc.c */ extern struct proc_dir_entry *drbd_proc; extern const struct file_operations drbd_proc_fops; -extern const char *drbd_conn_str(enum drbd_conns s); -extern const char *drbd_role_str(enum drbd_role s); /* drbd_actlog.c */ extern bool drbd_al_begin_io_prepare(struct drbd_device *device, struct drbd_interval *i); @@ -2095,13 +2108,22 @@ static inline void _sub_unacked(struct drbd_device *device, int n, const char *f ERR_IF_CNT_IS_NEGATIVE(unacked_cnt, func, line); } +static inline bool is_sync_target_state(enum drbd_conns connection_state) +{ + return connection_state == C_SYNC_TARGET || + connection_state == C_PAUSED_SYNC_T; +} + +static inline bool is_sync_source_state(enum drbd_conns connection_state) +{ + return connection_state == C_SYNC_SOURCE || + connection_state == C_PAUSED_SYNC_S; +} + static inline bool is_sync_state(enum drbd_conns connection_state) { - return - (connection_state == C_SYNC_SOURCE - || connection_state == C_SYNC_TARGET - || connection_state == C_PAUSED_SYNC_S - || connection_state == C_PAUSED_SYNC_T); + return is_sync_source_state(connection_state) || + is_sync_target_state(connection_state); } /** |