#include <linux/drbd_genl_api.h>
#include <linux/drbd.h>
#include "drbd_state.h"
+#include "drbd_protocol.h"
#ifdef __CHECKER__
# define __protected_by(x) __attribute__((require_context(x,1,999,"rdwr")))
extern unsigned int minor_count;
extern bool disable_sendpage;
extern bool allow_oos;
+void tl_abort_disk_io(struct drbd_device *device);
#ifdef CONFIG_DRBD_FAULT_INJECTION
extern int enable_faults;
#define UUID_NEW_BM_OFFSET ((u64)0x0001000000000000ULL)
-struct drbd_conf;
-struct drbd_tconn;
-
-
-/* to shorten dev_warn(DEV, "msg"); and relatives statements */
-#define DEV (disk_to_dev(mdev->vdisk))
-
-#define conn_printk(LEVEL, TCONN, FMT, ARGS...) \
- printk(LEVEL "d-con %s: " FMT, TCONN->name , ## ARGS)
-#define conn_alert(TCONN, FMT, ARGS...) conn_printk(KERN_ALERT, TCONN, FMT, ## ARGS)
-#define conn_crit(TCONN, FMT, ARGS...) conn_printk(KERN_CRIT, TCONN, FMT, ## ARGS)
-#define conn_err(TCONN, FMT, ARGS...) conn_printk(KERN_ERR, TCONN, FMT, ## ARGS)
-#define conn_warn(TCONN, FMT, ARGS...) conn_printk(KERN_WARNING, TCONN, FMT, ## ARGS)
-#define conn_notice(TCONN, FMT, ARGS...) conn_printk(KERN_NOTICE, TCONN, FMT, ## ARGS)
-#define conn_info(TCONN, FMT, ARGS...) conn_printk(KERN_INFO, TCONN, FMT, ## ARGS)
-#define conn_dbg(TCONN, FMT, ARGS...) conn_printk(KERN_DEBUG, TCONN, FMT, ## ARGS)
-
-#define D_ASSERT(exp) if (!(exp)) \
- dev_err(DEV, "ASSERT( " #exp " ) in %s:%d\n", __FILE__, __LINE__)
+struct drbd_device;
+struct drbd_connection;
+
+#define __drbd_printk_device(level, device, fmt, args...) \
+ dev_printk(level, disk_to_dev((device)->vdisk), fmt, ## args)
+#define __drbd_printk_peer_device(level, peer_device, fmt, args...) \
+ dev_printk(level, disk_to_dev((peer_device)->device->vdisk), fmt, ## args)
+#define __drbd_printk_resource(level, resource, fmt, args...) \
+ printk(level "drbd %s: " fmt, (resource)->name, ## args)
+#define __drbd_printk_connection(level, connection, fmt, args...) \
+ printk(level "drbd %s: " fmt, (connection)->resource->name, ## args)
+
+void drbd_printk_with_wrong_object_type(void);
+
+#define __drbd_printk_if_same_type(obj, type, func, level, fmt, args...) \
+ (__builtin_types_compatible_p(typeof(obj), type) || \
+ __builtin_types_compatible_p(typeof(obj), const type)), \
+ func(level, (const type)(obj), fmt, ## args)
+
+#define drbd_printk(level, obj, fmt, args...) \
+ __builtin_choose_expr( \
+ __drbd_printk_if_same_type(obj, struct drbd_device *, \
+ __drbd_printk_device, level, fmt, ## args), \
+ __builtin_choose_expr( \
+ __drbd_printk_if_same_type(obj, struct drbd_resource *, \
+ __drbd_printk_resource, level, fmt, ## args), \
+ __builtin_choose_expr( \
+ __drbd_printk_if_same_type(obj, struct drbd_connection *, \
+ __drbd_printk_connection, level, fmt, ## args), \
+ __builtin_choose_expr( \
+ __drbd_printk_if_same_type(obj, struct drbd_peer_device *, \
+ __drbd_printk_peer_device, level, fmt, ## args), \
+ drbd_printk_with_wrong_object_type()))))
+
+#define drbd_dbg(obj, fmt, args...) \
+ drbd_printk(KERN_DEBUG, obj, fmt, ## args)
+#define drbd_alert(obj, fmt, args...) \
+ drbd_printk(KERN_ALERT, obj, fmt, ## args)
+#define drbd_err(obj, fmt, args...) \
+ drbd_printk(KERN_ERR, obj, fmt, ## args)
+#define drbd_warn(obj, fmt, args...) \
+ drbd_printk(KERN_WARNING, obj, fmt, ## args)
+#define drbd_info(obj, fmt, args...) \
+ drbd_printk(KERN_INFO, obj, fmt, ## args)
+#define drbd_emerg(obj, fmt, args...) \
+ drbd_printk(KERN_EMERG, obj, fmt, ## args)
+
+#define dynamic_drbd_dbg(device, fmt, args...) \
+ dynamic_dev_dbg(disk_to_dev(device->vdisk), fmt, ## args)
+
+#define D_ASSERT(device, exp) do { \
+ if (!(exp)) \
+ drbd_err(device, "ASSERT( " #exp " ) in %s:%d\n", __FILE__, __LINE__); \
+ } while (0)
/**
* expect - Make an assertion
#define expect(exp) ({ \
bool _bool = (exp); \
if (!_bool) \
- dev_err(DEV, "ASSERTION %s FAILED in %s\n", \
+ drbd_err(device, "ASSERTION %s FAILED in %s\n", \
#exp, __func__); \
_bool; \
})
};
extern unsigned int
-_drbd_insert_fault(struct drbd_conf *mdev, unsigned int type);
+_drbd_insert_fault(struct drbd_device *device, unsigned int type);
static inline int
-drbd_insert_fault(struct drbd_conf *mdev, unsigned int type) {
+drbd_insert_fault(struct drbd_device *device, unsigned int type) {
#ifdef CONFIG_DRBD_FAULT_INJECTION
return fault_rate &&
(enable_faults & (1<<type)) &&
- _drbd_insert_fault(mdev, type);
+ _drbd_insert_fault(device, type);
#else
return 0;
#endif
#define div_floor(A, B) ((A)/(B))
extern struct ratelimit_state drbd_ratelimit_state;
-extern struct idr minors; /* RCU, updates: genl_lock() */
-extern struct list_head drbd_tconns; /* RCU, updates: genl_lock() */
-
-/* on the wire */
-enum drbd_packet {
- /* receiver (data socket) */
- P_DATA = 0x00,
- P_DATA_REPLY = 0x01, /* Response to P_DATA_REQUEST */
- P_RS_DATA_REPLY = 0x02, /* Response to P_RS_DATA_REQUEST */
- P_BARRIER = 0x03,
- P_BITMAP = 0x04,
- P_BECOME_SYNC_TARGET = 0x05,
- P_BECOME_SYNC_SOURCE = 0x06,
- P_UNPLUG_REMOTE = 0x07, /* Used at various times to hint the peer */
- P_DATA_REQUEST = 0x08, /* Used to ask for a data block */
- P_RS_DATA_REQUEST = 0x09, /* Used to ask for a data block for resync */
- P_SYNC_PARAM = 0x0a,
- P_PROTOCOL = 0x0b,
- P_UUIDS = 0x0c,
- P_SIZES = 0x0d,
- P_STATE = 0x0e,
- P_SYNC_UUID = 0x0f,
- P_AUTH_CHALLENGE = 0x10,
- P_AUTH_RESPONSE = 0x11,
- P_STATE_CHG_REQ = 0x12,
-
- /* asender (meta socket */
- P_PING = 0x13,
- P_PING_ACK = 0x14,
- P_RECV_ACK = 0x15, /* Used in protocol B */
- P_WRITE_ACK = 0x16, /* Used in protocol C */
- P_RS_WRITE_ACK = 0x17, /* Is a P_WRITE_ACK, additionally call set_in_sync(). */
- P_SUPERSEDED = 0x18, /* Used in proto C, two-primaries conflict detection */
- P_NEG_ACK = 0x19, /* Sent if local disk is unusable */
- P_NEG_DREPLY = 0x1a, /* Local disk is broken... */
- P_NEG_RS_DREPLY = 0x1b, /* Local disk is broken... */
- P_BARRIER_ACK = 0x1c,
- P_STATE_CHG_REPLY = 0x1d,
-
- /* "new" commands, no longer fitting into the ordering scheme above */
-
- P_OV_REQUEST = 0x1e, /* data socket */
- P_OV_REPLY = 0x1f,
- P_OV_RESULT = 0x20, /* meta socket */
- P_CSUM_RS_REQUEST = 0x21, /* data socket */
- P_RS_IS_IN_SYNC = 0x22, /* meta socket */
- P_SYNC_PARAM89 = 0x23, /* data socket, protocol version 89 replacement for P_SYNC_PARAM */
- P_COMPRESSED_BITMAP = 0x24, /* compressed or otherwise encoded bitmap transfer */
- /* P_CKPT_FENCE_REQ = 0x25, * currently reserved for protocol D */
- /* P_CKPT_DISABLE_REQ = 0x26, * currently reserved for protocol D */
- P_DELAY_PROBE = 0x27, /* is used on BOTH sockets */
- P_OUT_OF_SYNC = 0x28, /* Mark as out of sync (Outrunning), data socket */
- P_RS_CANCEL = 0x29, /* meta: Used to cancel RS_DATA_REQUEST packet by SyncSource */
- P_CONN_ST_CHG_REQ = 0x2a, /* data sock: Connection wide state request */
- P_CONN_ST_CHG_REPLY = 0x2b, /* meta sock: Connection side state req reply */
- P_RETRY_WRITE = 0x2c, /* Protocol C: retry conflicting write request */
- P_PROTOCOL_UPDATE = 0x2d, /* data sock: is used in established connections */
-
- P_MAY_IGNORE = 0x100, /* Flag to test if (cmd > P_MAY_IGNORE) ... */
- P_MAX_OPT_CMD = 0x101,
-
- /* special command ids for handshake */
-
- P_INITIAL_META = 0xfff1, /* First Packet on the MetaSock */
- P_INITIAL_DATA = 0xfff2, /* First Packet on the Socket */
-
- P_CONNECTION_FEATURES = 0xfffe /* FIXED for the next century! */
-};
+extern struct idr drbd_devices; /* RCU, updates: genl_lock() */
+extern struct list_head drbd_resources; /* RCU, updates: genl_lock() */
extern const char *cmdname(enum drbd_packet cmd);
unsigned bytes[2];
};
-extern void INFO_bm_xfer_stats(struct drbd_conf *mdev,
+extern void INFO_bm_xfer_stats(struct drbd_device *device,
const char *direction, struct bm_xfer_ctx *c);
static inline void bm_xfer_ctx_bit_to_word_offset(struct bm_xfer_ctx *c)
#endif
}
-#ifndef __packed
-#define __packed __attribute__((packed))
-#endif
-
-/* This is the layout for a packet on the wire.
- * The byteorder is the network byte order.
- * (except block_id and barrier fields.
- * these are pointers to local structs
- * and have no relevance for the partner,
- * which just echoes them as received.)
- *
- * NOTE that the payload starts at a long aligned offset,
- * regardless of 32 or 64 bit arch!
- */
-struct p_header80 {
- u32 magic;
- u16 command;
- u16 length; /* bytes of data after this header */
-} __packed;
-
-/* Header for big packets, Used for data packets exceeding 64kB */
-struct p_header95 {
- u16 magic; /* use DRBD_MAGIC_BIG here */
- u16 command;
- u32 length;
-} __packed;
-
-struct p_header100 {
- u32 magic;
- u16 volume;
- u16 command;
- u32 length;
- u32 pad;
-} __packed;
-
-extern unsigned int drbd_header_size(struct drbd_tconn *tconn);
-
-/* these defines must not be changed without changing the protocol version */
-#define DP_HARDBARRIER 1 /* depricated */
-#define DP_RW_SYNC 2 /* equals REQ_SYNC */
-#define DP_MAY_SET_IN_SYNC 4
-#define DP_UNPLUG 8 /* not used anymore */
-#define DP_FUA 16 /* equals REQ_FUA */
-#define DP_FLUSH 32 /* equals REQ_FLUSH */
-#define DP_DISCARD 64 /* equals REQ_DISCARD */
-#define DP_SEND_RECEIVE_ACK 128 /* This is a proto B write request */
-#define DP_SEND_WRITE_ACK 256 /* This is a proto C write request */
-
-struct p_data {
- u64 sector; /* 64 bits sector number */
- u64 block_id; /* to identify the request in protocol B&C */
- u32 seq_num;
- u32 dp_flags;
-} __packed;
-
-/*
- * commands which share a struct:
- * p_block_ack:
- * P_RECV_ACK (proto B), P_WRITE_ACK (proto C),
- * P_SUPERSEDED (proto C, two-primaries conflict detection)
- * p_block_req:
- * P_DATA_REQUEST, P_RS_DATA_REQUEST
- */
-struct p_block_ack {
- u64 sector;
- u64 block_id;
- u32 blksize;
- u32 seq_num;
-} __packed;
-
-struct p_block_req {
- u64 sector;
- u64 block_id;
- u32 blksize;
- u32 pad; /* to multiple of 8 Byte */
-} __packed;
-
-/*
- * commands with their own struct for additional fields:
- * P_CONNECTION_FEATURES
- * P_BARRIER
- * P_BARRIER_ACK
- * P_SYNC_PARAM
- * ReportParams
- */
-
-struct p_connection_features {
- u32 protocol_min;
- u32 feature_flags;
- u32 protocol_max;
-
- /* should be more than enough for future enhancements
- * for now, feature_flags and the reserved array shall be zero.
- */
-
- u32 _pad;
- u64 reserved[7];
-} __packed;
-
-struct p_barrier {
- u32 barrier; /* barrier number _handle_ only */
- u32 pad; /* to multiple of 8 Byte */
-} __packed;
-
-struct p_barrier_ack {
- u32 barrier;
- u32 set_size;
-} __packed;
-
-struct p_rs_param {
- u32 resync_rate;
-
- /* Since protocol version 88 and higher. */
- char verify_alg[0];
-} __packed;
-
-struct p_rs_param_89 {
- u32 resync_rate;
- /* protocol version 89: */
- char verify_alg[SHARED_SECRET_MAX];
- char csums_alg[SHARED_SECRET_MAX];
-} __packed;
-
-struct p_rs_param_95 {
- u32 resync_rate;
- char verify_alg[SHARED_SECRET_MAX];
- char csums_alg[SHARED_SECRET_MAX];
- u32 c_plan_ahead;
- u32 c_delay_target;
- u32 c_fill_target;
- u32 c_max_rate;
-} __packed;
-
-enum drbd_conn_flags {
- CF_DISCARD_MY_DATA = 1,
- CF_DRY_RUN = 2,
-};
-
-struct p_protocol {
- u32 protocol;
- u32 after_sb_0p;
- u32 after_sb_1p;
- u32 after_sb_2p;
- u32 conn_flags;
- u32 two_primaries;
-
- /* Since protocol version 87 and higher. */
- char integrity_alg[0];
-
-} __packed;
-
-struct p_uuids {
- u64 uuid[UI_EXTENDED_SIZE];
-} __packed;
-
-struct p_rs_uuid {
- u64 uuid;
-} __packed;
-
-struct p_sizes {
- u64 d_size; /* size of disk */
- u64 u_size; /* user requested size */
- u64 c_size; /* current exported size */
- u32 max_bio_size; /* Maximal size of a BIO */
- u16 queue_order_type; /* not yet implemented in DRBD*/
- u16 dds_flags; /* use enum dds_flags here. */
-} __packed;
-
-struct p_state {
- u32 state;
-} __packed;
-
-struct p_req_state {
- u32 mask;
- u32 val;
-} __packed;
-
-struct p_req_state_reply {
- u32 retcode;
-} __packed;
-
-struct p_drbd06_param {
- u64 size;
- u32 state;
- u32 blksize;
- u32 protocol;
- u32 version;
- u32 gen_cnt[5];
- u32 bit_map_gen[5];
-} __packed;
-
-struct p_block_desc {
- u64 sector;
- u32 blksize;
- u32 pad; /* to multiple of 8 Byte */
-} __packed;
-
-/* Valid values for the encoding field.
- * Bump proto version when changing this. */
-enum drbd_bitmap_code {
- /* RLE_VLI_Bytes = 0,
- * and other bit variants had been defined during
- * algorithm evaluation. */
- RLE_VLI_Bits = 2,
-};
-
-struct p_compressed_bm {
- /* (encoding & 0x0f): actual encoding, see enum drbd_bitmap_code
- * (encoding & 0x80): polarity (set/unset) of first runlength
- * ((encoding >> 4) & 0x07): pad_bits, number of trailing zero bits
- * used to pad up to head.length bytes
- */
- u8 encoding;
-
- u8 code[0];
-} __packed;
-
-struct p_delay_probe93 {
- u32 seq_num; /* sequence number to match the two probe packets */
- u32 offset; /* usecs the probe got sent after the reference time point */
-} __packed;
-
-/*
- * Bitmap packets need to fit within a single page on the sender and receiver,
- * so we are limited to 4 KiB (and not to PAGE_SIZE, which can be bigger).
- */
-#define DRBD_SOCKET_BUFFER_SIZE 4096
+extern unsigned int drbd_header_size(struct drbd_connection *connection);
/**********************************************************************/
enum drbd_thread_state {
struct completion stop;
enum drbd_thread_state t_state;
int (*function) (struct drbd_thread *);
- struct drbd_tconn *tconn;
+ struct drbd_connection *connection;
int reset_cpu_mask;
char name[9];
};
struct list_head list;
int (*cb)(struct drbd_work *, int cancel);
union {
- struct drbd_conf *mdev;
- struct drbd_tconn *tconn;
+ struct drbd_device *device;
+ struct drbd_connection *connection;
};
};
#include "drbd_interval.h"
-extern int drbd_wait_misc(struct drbd_conf *, struct drbd_interval *);
+extern int drbd_wait_misc(struct drbd_device *, struct drbd_interval *);
struct drbd_request {
struct drbd_work w;
};
struct drbd_epoch {
- struct drbd_tconn *tconn;
+ struct drbd_connection *connection;
struct list_head list;
unsigned int barrier_nr;
atomic_t epoch_size; /* increased on every request added. */
unsigned long flags;
};
+/* Prototype declaration of function defined in drbd_receiver.c */
+int drbdd_init(struct drbd_thread *);
+int drbd_asender(struct drbd_thread *);
+
/* drbd_epoch flag bits */
enum {
DE_HAVE_BARRIER_NUMBER,
#define EE_SEND_WRITE_ACK (1<<__EE_SEND_WRITE_ACK)
#define EE_IN_INTERVAL_TREE (1<<__EE_IN_INTERVAL_TREE)
-/* flag bits per mdev */
+/* flag bits per device */
enum {
UNPLUG_REMOTE, /* sending a "UnplugRemote" could help */
MD_DIRTY, /* current uuids and flags not yet on disk */
READ_BALANCE_RR,
};
-struct drbd_bitmap; /* opaque for drbd_conf */
+struct drbd_bitmap; /* opaque for drbd_device */
/* definition of bits in bm_flags to be used in drbd_bm_lock
* and drbd_bitmap_io and friends. */
struct block_device *backing_bdev;
struct block_device *md_bdev;
struct drbd_md md;
- struct disk_conf *disk_conf; /* RCU, for updates: mdev->tconn->conf_update */
+ struct disk_conf *disk_conf; /* RCU, for updates: resource->conf_update */
sector_t known_size; /* last known size of that backing device */
};
struct drbd_work w;
char *why;
enum bm_flag flags;
- int (*io_fn)(struct drbd_conf *mdev);
- void (*done)(struct drbd_conf *mdev, int rv);
+ int (*io_fn)(struct drbd_device *device);
+ void (*done)(struct drbd_device *device, int rv);
};
enum write_ordering_e {
};
extern struct fifo_buffer *fifo_alloc(int fifo_size);
-/* flag bits per tconn */
+/* flag bits per connection */
enum {
NET_CONGESTED, /* The data socket is congested */
RESOLVE_CONFLICTS, /* Set on one node, cleared on the peer! */
DISCONNECT_SENT,
};
-struct drbd_tconn { /* is a resource from the config file */
- char *name; /* Resource name */
- struct list_head all_tconn; /* linked on global drbd_tconns */
+struct drbd_resource {
+ char *name;
struct kref kref;
- struct idr volumes; /* <tconn, vnr> to mdev mapping */
- enum drbd_conns cstate; /* Only C_STANDALONE to C_WF_REPORT_PARAMS */
+ struct idr devices; /* volume number to device mapping */
+ struct list_head connections;
+ struct list_head resources;
+ struct res_opts res_opts;
+ struct mutex conf_update; /* mutex for ready-copy-update of net_conf and disk_conf */
+ spinlock_t req_lock;
+
unsigned susp:1; /* IO suspended by user */
unsigned susp_nod:1; /* IO suspended because no data */
unsigned susp_fen:1; /* IO suspended because fence peer handler runs */
+
+ cpumask_var_t cpu_mask;
+};
+
+struct drbd_connection {
+ struct list_head connections;
+ struct drbd_resource *resource;
+ struct kref kref;
+ struct idr peer_devices; /* volume number to peer device mapping */
+ enum drbd_conns cstate; /* Only C_STANDALONE to C_WF_REPORT_PARAMS */
struct mutex cstate_mutex; /* Protects graceful disconnects */
unsigned int connect_cnt; /* Inc each time a connection is established */
unsigned long flags;
struct net_conf *net_conf; /* content protected by rcu */
- struct mutex conf_update; /* mutex for ready-copy-update of net_conf and disk_conf */
wait_queue_head_t ping_wait; /* Woken upon reception of a ping, and a state change */
- struct res_opts res_opts;
struct sockaddr_storage my_addr;
int my_addr_len;
unsigned long last_received; /* in jiffies, either socket */
unsigned int ko_count;
- spinlock_t req_lock;
-
struct list_head transfer_log; /* all requests not yet fully processed */
struct crypto_hash *cram_hmac_tfm;
- struct crypto_hash *integrity_tfm; /* checksums we compute, updates protected by tconn->data->mutex */
+ struct crypto_hash *integrity_tfm; /* checksums we compute, updates protected by connection->data->mutex */
struct crypto_hash *peer_integrity_tfm; /* checksums we verify, only accessed from receiver thread */
struct crypto_hash *csums_tfm;
struct crypto_hash *verify_tfm;
struct drbd_thread receiver;
struct drbd_thread worker;
struct drbd_thread asender;
- cpumask_var_t cpu_mask;
/* sender side */
struct drbd_work_queue sender_work;
struct list_head writes;
};
-struct drbd_conf {
- struct drbd_tconn *tconn;
+struct drbd_peer_device {
+ struct list_head peer_devices;
+ struct drbd_device *device;
+ struct drbd_connection *connection;
+};
+
+struct drbd_device {
+ struct drbd_resource *resource;
+ struct list_head peer_devices;
int vnr; /* volume number within the connection */
struct kref kref;
struct bm_io_work bm_io_work;
u64 ed_uuid; /* UUID of the exposed data */
struct mutex own_state_mutex;
- struct mutex *state_mutex; /* either own_state_mutex or mdev->tconn->cstate_mutex */
+ struct mutex *state_mutex; /* either own_state_mutex or first_peer_device(device)->connection->cstate_mutex */
char congestion_reason; /* Why we where congested... */
atomic_t rs_sect_in; /* for incoming resync data rate, SyncTarget */
atomic_t rs_sect_ev; /* for submitted resync data rate, both */
int rs_last_events; /* counter of read or write "events" (unit sectors)
* on the lower level device when we last looked. */
int c_sync_rate; /* current resync rate after syncer throttle magic */
- struct fifo_buffer *rs_plan_s; /* correction values of resync planer (RCU, tconn->conn_update) */
+ struct fifo_buffer *rs_plan_s; /* correction values of resync planer (RCU, connection->conn_update) */
int rs_in_flight; /* resync sectors in flight (to proxy, in proxy and from proxy) */
atomic_t ap_in_flight; /* App sectors in flight (waiting for ack) */
unsigned int peer_max_bio_size;
struct submit_worker submit;
};
-static inline struct drbd_conf *minor_to_mdev(unsigned int minor)
+static inline struct drbd_device *minor_to_device(unsigned int minor)
+{
+ return (struct drbd_device *)idr_find(&drbd_devices, minor);
+}
+
+static inline struct drbd_peer_device *first_peer_device(struct drbd_device *device)
{
- return (struct drbd_conf *)idr_find(&minors, minor);
+ return list_first_entry(&device->peer_devices, struct drbd_peer_device, peer_devices);
}
-static inline unsigned int mdev_to_minor(struct drbd_conf *mdev)
+#define for_each_resource(resource, _resources) \
+ list_for_each_entry(resource, _resources, resources)
+
+#define for_each_resource_rcu(resource, _resources) \
+ list_for_each_entry_rcu(resource, _resources, resources)
+
+#define for_each_resource_safe(resource, tmp, _resources) \
+ list_for_each_entry_safe(resource, tmp, _resources, resources)
+
+#define for_each_connection(connection, resource) \
+ list_for_each_entry(connection, &resource->connections, connections)
+
+#define for_each_connection_rcu(connection, resource) \
+ list_for_each_entry_rcu(connection, &resource->connections, connections)
+
+#define for_each_connection_safe(connection, tmp, resource) \
+ list_for_each_entry_safe(connection, tmp, &resource->connections, connections)
+
+#define for_each_peer_device(peer_device, device) \
+ list_for_each_entry(peer_device, &device->peer_devices, peer_devices)
+
+#define for_each_peer_device_rcu(peer_device, device) \
+ list_for_each_entry_rcu(peer_device, &device->peer_devices, peer_devices)
+
+#define for_each_peer_device_safe(peer_device, tmp, device) \
+ list_for_each_entry_safe(peer_device, tmp, &device->peer_devices, peer_devices)
+
+static inline unsigned int device_to_minor(struct drbd_device *device)
{
- return mdev->minor;
+ return device->minor;
}
-static inline struct drbd_conf *vnr_to_mdev(struct drbd_tconn *tconn, int vnr)
+static inline struct drbd_device *vnr_to_device(struct drbd_connection *connection, int vnr)
{
- return (struct drbd_conf *)idr_find(&tconn->volumes, vnr);
+ struct drbd_peer_device *peer_device;
+
+ peer_device = idr_find(&connection->peer_devices, vnr);
+ return peer_device ? peer_device->device : NULL;
}
/*
DDSF_NO_RESYNC = 2, /* Do not run a resync for the new space */
};
-extern void drbd_init_set_defaults(struct drbd_conf *mdev);
+extern void drbd_init_set_defaults(struct drbd_device *device);
extern int drbd_thread_start(struct drbd_thread *thi);
extern void _drbd_thread_stop(struct drbd_thread *thi, int restart, int wait);
-extern char *drbd_task_to_thread_name(struct drbd_tconn *tconn, struct task_struct *task);
+extern char *drbd_task_to_thread_name(struct drbd_connection *connection, struct task_struct *task);
#ifdef CONFIG_SMP
extern void drbd_thread_current_set_cpu(struct drbd_thread *thi);
-extern void drbd_calc_cpu_mask(struct drbd_tconn *tconn);
#else
#define drbd_thread_current_set_cpu(A) ({})
-#define drbd_calc_cpu_mask(A) ({})
#endif
-extern void tl_release(struct drbd_tconn *, unsigned int barrier_nr,
+extern void tl_release(struct drbd_connection *, unsigned int barrier_nr,
unsigned int set_size);
-extern void tl_clear(struct drbd_tconn *);
-extern void drbd_free_sock(struct drbd_tconn *tconn);
-extern int drbd_send(struct drbd_tconn *tconn, struct socket *sock,
+extern void tl_clear(struct drbd_connection *);
+extern void drbd_free_sock(struct drbd_connection *connection);
+extern int drbd_send(struct drbd_connection *connection, struct socket *sock,
void *buf, size_t size, unsigned msg_flags);
-extern int drbd_send_all(struct drbd_tconn *, struct socket *, void *, size_t,
+extern int drbd_send_all(struct drbd_connection *, struct socket *, void *, size_t,
unsigned);
-extern int __drbd_send_protocol(struct drbd_tconn *tconn, enum drbd_packet cmd);
-extern int drbd_send_protocol(struct drbd_tconn *tconn);
-extern int drbd_send_uuids(struct drbd_conf *mdev);
-extern int drbd_send_uuids_skip_initial_sync(struct drbd_conf *mdev);
-extern void drbd_gen_and_send_sync_uuid(struct drbd_conf *mdev);
-extern int drbd_send_sizes(struct drbd_conf *mdev, int trigger_reply, enum dds_flags flags);
-extern int drbd_send_state(struct drbd_conf *mdev, union drbd_state s);
-extern int drbd_send_current_state(struct drbd_conf *mdev);
-extern int drbd_send_sync_param(struct drbd_conf *mdev);
-extern void drbd_send_b_ack(struct drbd_tconn *tconn, u32 barrier_nr,
+extern int __drbd_send_protocol(struct drbd_connection *connection, enum drbd_packet cmd);
+extern int drbd_send_protocol(struct drbd_connection *connection);
+extern int drbd_send_uuids(struct drbd_device *device);
+extern int drbd_send_uuids_skip_initial_sync(struct drbd_device *device);
+extern void drbd_gen_and_send_sync_uuid(struct drbd_device *device);
+extern int drbd_send_sizes(struct drbd_device *device, int trigger_reply, enum dds_flags flags);
+extern int drbd_send_state(struct drbd_device *device, union drbd_state s);
+extern int drbd_send_current_state(struct drbd_device *device);
+extern int drbd_send_sync_param(struct drbd_device *device);
+extern void drbd_send_b_ack(struct drbd_connection *connection, u32 barrier_nr,
u32 set_size);
-extern int drbd_send_ack(struct drbd_conf *, enum drbd_packet,
+extern int drbd_send_ack(struct drbd_device *, enum drbd_packet,
struct drbd_peer_request *);
-extern void drbd_send_ack_rp(struct drbd_conf *mdev, enum drbd_packet cmd,
+extern void drbd_send_ack_rp(struct drbd_device *device, enum drbd_packet cmd,
struct p_block_req *rp);
-extern void drbd_send_ack_dp(struct drbd_conf *mdev, enum drbd_packet cmd,
+extern void drbd_send_ack_dp(struct drbd_device *device, enum drbd_packet cmd,
struct p_data *dp, int data_size);
-extern int drbd_send_ack_ex(struct drbd_conf *mdev, enum drbd_packet cmd,
+extern int drbd_send_ack_ex(struct drbd_device *device, enum drbd_packet cmd,
sector_t sector, int blksize, u64 block_id);
-extern int drbd_send_out_of_sync(struct drbd_conf *, struct drbd_request *);
-extern int drbd_send_block(struct drbd_conf *, enum drbd_packet,
+extern int drbd_send_out_of_sync(struct drbd_device *, struct drbd_request *);
+extern int drbd_send_block(struct drbd_device *, enum drbd_packet,
struct drbd_peer_request *);
-extern int drbd_send_dblock(struct drbd_conf *mdev, struct drbd_request *req);
-extern int drbd_send_drequest(struct drbd_conf *mdev, int cmd,
+extern int drbd_send_dblock(struct drbd_device *device, struct drbd_request *req);
+extern int drbd_send_drequest(struct drbd_device *device, int cmd,
sector_t sector, int size, u64 block_id);
-extern int drbd_send_drequest_csum(struct drbd_conf *mdev, sector_t sector,
+extern int drbd_send_drequest_csum(struct drbd_device *device, sector_t sector,
int size, void *digest, int digest_size,
enum drbd_packet cmd);
-extern int drbd_send_ov_request(struct drbd_conf *mdev,sector_t sector,int size);
+extern int drbd_send_ov_request(struct drbd_device *device, sector_t sector, int size);
-extern int drbd_send_bitmap(struct drbd_conf *mdev);
-extern void drbd_send_sr_reply(struct drbd_conf *mdev, enum drbd_state_rv retcode);
-extern void conn_send_sr_reply(struct drbd_tconn *tconn, enum drbd_state_rv retcode);
+extern int drbd_send_bitmap(struct drbd_device *device);
+extern void drbd_send_sr_reply(struct drbd_device *device, enum drbd_state_rv retcode);
+extern void conn_send_sr_reply(struct drbd_connection *connection, enum drbd_state_rv retcode);
extern void drbd_free_bc(struct drbd_backing_dev *ldev);
-extern void drbd_mdev_cleanup(struct drbd_conf *mdev);
-void drbd_print_uuids(struct drbd_conf *mdev, const char *text);
-
-extern void conn_md_sync(struct drbd_tconn *tconn);
-extern void drbd_md_write(struct drbd_conf *mdev, void *buffer);
-extern void drbd_md_sync(struct drbd_conf *mdev);
-extern int drbd_md_read(struct drbd_conf *mdev, struct drbd_backing_dev *bdev);
-extern void drbd_uuid_set(struct drbd_conf *mdev, int idx, u64 val) __must_hold(local);
-extern void _drbd_uuid_set(struct drbd_conf *mdev, int idx, u64 val) __must_hold(local);
-extern void drbd_uuid_new_current(struct drbd_conf *mdev) __must_hold(local);
-extern void drbd_uuid_set_bm(struct drbd_conf *mdev, u64 val) __must_hold(local);
-extern void drbd_uuid_move_history(struct drbd_conf *mdev) __must_hold(local);
-extern void __drbd_uuid_set(struct drbd_conf *mdev, int idx, u64 val) __must_hold(local);
-extern void drbd_md_set_flag(struct drbd_conf *mdev, int flags) __must_hold(local);
-extern void drbd_md_clear_flag(struct drbd_conf *mdev, int flags)__must_hold(local);
+extern void drbd_device_cleanup(struct drbd_device *device);
+void drbd_print_uuids(struct drbd_device *device, const char *text);
+
+extern void conn_md_sync(struct drbd_connection *connection);
+extern void drbd_md_write(struct drbd_device *device, void *buffer);
+extern void drbd_md_sync(struct drbd_device *device);
+extern int drbd_md_read(struct drbd_device *device, struct drbd_backing_dev *bdev);
+extern void drbd_uuid_set(struct drbd_device *device, int idx, u64 val) __must_hold(local);
+extern void _drbd_uuid_set(struct drbd_device *device, int idx, u64 val) __must_hold(local);
+extern void drbd_uuid_new_current(struct drbd_device *device) __must_hold(local);
+extern void drbd_uuid_set_bm(struct drbd_device *device, u64 val) __must_hold(local);
+extern void drbd_uuid_move_history(struct drbd_device *device) __must_hold(local);
+extern void __drbd_uuid_set(struct drbd_device *device, int idx, u64 val) __must_hold(local);
+extern void drbd_md_set_flag(struct drbd_device *device, int flags) __must_hold(local);
+extern void drbd_md_clear_flag(struct drbd_device *device, int flags)__must_hold(local);
extern int drbd_md_test_flag(struct drbd_backing_dev *, int);
#ifndef DRBD_DEBUG_MD_SYNC
-extern void drbd_md_mark_dirty(struct drbd_conf *mdev);
+extern void drbd_md_mark_dirty(struct drbd_device *device);
#else
#define drbd_md_mark_dirty(m) drbd_md_mark_dirty_(m, __LINE__ , __func__ )
-extern void drbd_md_mark_dirty_(struct drbd_conf *mdev,
+extern void drbd_md_mark_dirty_(struct drbd_device *device,
unsigned int line, const char *func);
#endif
-extern void drbd_queue_bitmap_io(struct drbd_conf *mdev,
- int (*io_fn)(struct drbd_conf *),
- void (*done)(struct drbd_conf *, int),
+extern void drbd_queue_bitmap_io(struct drbd_device *device,
+ int (*io_fn)(struct drbd_device *),
+ void (*done)(struct drbd_device *, int),
char *why, enum bm_flag flags);
-extern int drbd_bitmap_io(struct drbd_conf *mdev,
- int (*io_fn)(struct drbd_conf *),
+extern int drbd_bitmap_io(struct drbd_device *device,
+ int (*io_fn)(struct drbd_device *),
char *why, enum bm_flag flags);
-extern int drbd_bitmap_io_from_worker(struct drbd_conf *mdev,
- int (*io_fn)(struct drbd_conf *),
+extern int drbd_bitmap_io_from_worker(struct drbd_device *device,
+ int (*io_fn)(struct drbd_device *),
char *why, enum bm_flag flags);
-extern int drbd_bmio_set_n_write(struct drbd_conf *mdev);
-extern int drbd_bmio_clear_n_write(struct drbd_conf *mdev);
-extern void drbd_ldev_destroy(struct drbd_conf *mdev);
+extern int drbd_bmio_set_n_write(struct drbd_device *device);
+extern int drbd_bmio_clear_n_write(struct drbd_device *device);
+extern void drbd_ldev_destroy(struct drbd_device *device);
/* Meta data layout
*
#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 */
-extern int drbd_bm_init(struct drbd_conf *mdev);
-extern int drbd_bm_resize(struct drbd_conf *mdev, sector_t sectors, int set_new_bits);
-extern void drbd_bm_cleanup(struct drbd_conf *mdev);
-extern void drbd_bm_set_all(struct drbd_conf *mdev);
-extern void drbd_bm_clear_all(struct drbd_conf *mdev);
+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);
+extern void drbd_bm_cleanup(struct drbd_device *device);
+extern void drbd_bm_set_all(struct drbd_device *device);
+extern void drbd_bm_clear_all(struct drbd_device *device);
/* set/clear/test only a few bits at a time */
extern int drbd_bm_set_bits(
- struct drbd_conf *mdev, unsigned long s, unsigned long e);
+ struct drbd_device *device, unsigned long s, unsigned long e);
extern int drbd_bm_clear_bits(
- struct drbd_conf *mdev, unsigned long s, unsigned long e);
+ struct drbd_device *device, unsigned long s, unsigned long e);
extern int drbd_bm_count_bits(
- struct drbd_conf *mdev, const unsigned long s, const unsigned long e);
+ struct drbd_device *device, const unsigned long s, const unsigned long e);
/* bm_set_bits variant for use while holding drbd_bm_lock,
* may process the whole bitmap in one go */
-extern void _drbd_bm_set_bits(struct drbd_conf *mdev,
+extern void _drbd_bm_set_bits(struct drbd_device *device,
const unsigned long s, const unsigned long e);
-extern int drbd_bm_test_bit(struct drbd_conf *mdev, unsigned long bitnr);
-extern int drbd_bm_e_weight(struct drbd_conf *mdev, unsigned long enr);
-extern int drbd_bm_write_page(struct drbd_conf *mdev, unsigned int idx) __must_hold(local);
-extern int drbd_bm_read(struct drbd_conf *mdev) __must_hold(local);
-extern void drbd_bm_mark_for_writeout(struct drbd_conf *mdev, int page_nr);
-extern int drbd_bm_write(struct drbd_conf *mdev) __must_hold(local);
-extern int drbd_bm_write_hinted(struct drbd_conf *mdev) __must_hold(local);
-extern int drbd_bm_write_all(struct drbd_conf *mdev) __must_hold(local);
-extern int drbd_bm_write_copy_pages(struct drbd_conf *mdev) __must_hold(local);
-extern size_t drbd_bm_words(struct drbd_conf *mdev);
-extern unsigned long drbd_bm_bits(struct drbd_conf *mdev);
-extern sector_t drbd_bm_capacity(struct drbd_conf *mdev);
+extern int drbd_bm_test_bit(struct drbd_device *device, unsigned long bitnr);
+extern int drbd_bm_e_weight(struct drbd_device *device, unsigned long enr);
+extern int drbd_bm_write_page(struct drbd_device *device, unsigned int idx) __must_hold(local);
+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 int drbd_bm_write_hinted(struct drbd_device *device) __must_hold(local);
+extern int drbd_bm_write_all(struct drbd_device *device) __must_hold(local);
+extern int drbd_bm_write_copy_pages(struct drbd_device *device) __must_hold(local);
+extern size_t drbd_bm_words(struct drbd_device *device);
+extern unsigned long drbd_bm_bits(struct drbd_device *device);
+extern sector_t drbd_bm_capacity(struct drbd_device *device);
#define DRBD_END_OF_BITMAP (~(unsigned long)0)
-extern unsigned long drbd_bm_find_next(struct drbd_conf *mdev, unsigned long bm_fo);
+extern unsigned long drbd_bm_find_next(struct drbd_device *device, unsigned long bm_fo);
/* bm_find_next variants for use while you hold drbd_bm_lock() */
-extern unsigned long _drbd_bm_find_next(struct drbd_conf *mdev, unsigned long bm_fo);
-extern unsigned long _drbd_bm_find_next_zero(struct drbd_conf *mdev, unsigned long bm_fo);
-extern unsigned long _drbd_bm_total_weight(struct drbd_conf *mdev);
-extern unsigned long drbd_bm_total_weight(struct drbd_conf *mdev);
-extern int drbd_bm_rs_done(struct drbd_conf *mdev);
+extern unsigned long _drbd_bm_find_next(struct drbd_device *device, unsigned long bm_fo);
+extern unsigned long _drbd_bm_find_next_zero(struct drbd_device *device, unsigned long bm_fo);
+extern unsigned long _drbd_bm_total_weight(struct drbd_device *device);
+extern unsigned long drbd_bm_total_weight(struct drbd_device *device);
+extern int drbd_bm_rs_done(struct drbd_device *device);
/* for receive_bitmap */
-extern void drbd_bm_merge_lel(struct drbd_conf *mdev, size_t offset,
+extern void drbd_bm_merge_lel(struct drbd_device *device, size_t offset,
size_t number, unsigned long *buffer);
/* for _drbd_send_bitmap */
-extern void drbd_bm_get_lel(struct drbd_conf *mdev, size_t offset,
+extern void drbd_bm_get_lel(struct drbd_device *device, size_t offset,
size_t number, unsigned long *buffer);
-extern void drbd_bm_lock(struct drbd_conf *mdev, char *why, enum bm_flag flags);
-extern void drbd_bm_unlock(struct drbd_conf *mdev);
+extern void drbd_bm_lock(struct drbd_device *device, char *why, enum bm_flag flags);
+extern void drbd_bm_unlock(struct drbd_device *device);
/* drbd_main.c */
extern struct kmem_cache *drbd_request_cache;
extern rwlock_t global_state_lock;
-extern int conn_lowest_minor(struct drbd_tconn *tconn);
-enum drbd_ret_code conn_new_minor(struct drbd_tconn *tconn, unsigned int minor, int vnr);
-extern void drbd_minor_destroy(struct kref *kref);
+extern int conn_lowest_minor(struct drbd_connection *connection);
+enum drbd_ret_code drbd_create_device(struct drbd_resource *resource, unsigned int minor, int vnr);
+extern void drbd_destroy_device(struct kref *kref);
+extern void drbd_delete_device(struct drbd_device *mdev);
-extern int set_resource_options(struct drbd_tconn *tconn, struct res_opts *res_opts);
-extern struct drbd_tconn *conn_create(const char *name, struct res_opts *res_opts);
-extern void conn_destroy(struct kref *kref);
-struct drbd_tconn *conn_get_by_name(const char *name);
-extern struct drbd_tconn *conn_get_by_addrs(void *my_addr, int my_addr_len,
+extern struct drbd_resource *drbd_create_resource(const char *name);
+extern void drbd_free_resource(struct drbd_resource *resource);
+
+extern int set_resource_options(struct drbd_resource *resource, struct res_opts *res_opts);
+extern struct drbd_connection *conn_create(const char *name, struct res_opts *res_opts);
+extern void drbd_destroy_connection(struct kref *kref);
+extern struct drbd_connection *conn_get_by_addrs(void *my_addr, int my_addr_len,
void *peer_addr, int peer_addr_len);
-extern void conn_free_crypto(struct drbd_tconn *tconn);
+extern struct drbd_resource *drbd_find_resource(const char *name);
+extern void drbd_destroy_resource(struct kref *kref);
+extern void conn_free_crypto(struct drbd_connection *connection);
extern int proc_details;
/* drbd_req */
extern void do_submit(struct work_struct *ws);
-extern void __drbd_make_request(struct drbd_conf *, struct bio *, unsigned long);
+extern void __drbd_make_request(struct drbd_device *, struct bio *, unsigned long);
extern void drbd_make_request(struct request_queue *q, struct bio *bio);
-extern int drbd_read_remote(struct drbd_conf *mdev, struct drbd_request *req);
+extern int drbd_read_remote(struct drbd_device *device, struct drbd_request *req);
extern int drbd_merge_bvec(struct request_queue *q, struct bvec_merge_data *bvm, struct bio_vec *bvec);
extern int is_valid_ar_handle(struct drbd_request *, sector_t);
/* drbd_nl.c */
extern int drbd_msg_put_info(const char *info);
-extern void drbd_suspend_io(struct drbd_conf *mdev);
-extern void drbd_resume_io(struct drbd_conf *mdev);
+extern void drbd_suspend_io(struct drbd_device *device);
+extern void drbd_resume_io(struct drbd_device *device);
extern char *ppsize(char *buf, unsigned long long size);
-extern sector_t drbd_new_dev_size(struct drbd_conf *, struct drbd_backing_dev *, sector_t, int);
+extern sector_t drbd_new_dev_size(struct drbd_device *, struct drbd_backing_dev *, sector_t, int);
enum determine_dev_size {
DS_ERROR_SHRINK = -3,
DS_ERROR_SPACE_MD = -2,
DS_GREW_FROM_ZERO = 3,
};
extern enum determine_dev_size
-drbd_determine_dev_size(struct drbd_conf *, enum dds_flags, struct resize_parms *) __must_hold(local);
-extern void resync_after_online_grow(struct drbd_conf *);
-extern void drbd_reconsider_max_bio_size(struct drbd_conf *mdev);
-extern enum drbd_state_rv drbd_set_role(struct drbd_conf *mdev,
+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);
+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_tconn *tconn);
-extern void conn_try_outdate_peer_async(struct drbd_tconn *tconn);
-extern int drbd_khelper(struct drbd_conf *mdev, char *cmd);
+extern bool conn_try_outdate_peer(struct drbd_connection *connection);
+extern void conn_try_outdate_peer_async(struct drbd_connection *connection);
+extern int drbd_khelper(struct drbd_device *device, char *cmd);
/* drbd_worker.c */
extern int drbd_worker(struct drbd_thread *thi);
-enum drbd_ret_code drbd_resync_after_valid(struct drbd_conf *mdev, int o_minor);
-void drbd_resync_after_changed(struct drbd_conf *mdev);
-extern void drbd_start_resync(struct drbd_conf *mdev, enum drbd_conns side);
-extern void resume_next_sg(struct drbd_conf *mdev);
-extern void suspend_other_sg(struct drbd_conf *mdev);
-extern int drbd_resync_finished(struct drbd_conf *mdev);
+enum drbd_ret_code drbd_resync_after_valid(struct drbd_device *device, int o_minor);
+void drbd_resync_after_changed(struct drbd_device *device);
+extern void drbd_start_resync(struct drbd_device *device, enum drbd_conns side);
+extern void resume_next_sg(struct drbd_device *device);
+extern void suspend_other_sg(struct drbd_device *device);
+extern int drbd_resync_finished(struct drbd_device *device);
/* maybe rather drbd_main.c ? */
-extern void *drbd_md_get_buffer(struct drbd_conf *mdev);
-extern void drbd_md_put_buffer(struct drbd_conf *mdev);
-extern int drbd_md_sync_page_io(struct drbd_conf *mdev,
+extern void *drbd_md_get_buffer(struct drbd_device *device);
+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);
-extern void drbd_ov_out_of_sync_found(struct drbd_conf *, sector_t, int);
-extern void wait_until_done_or_force_detached(struct drbd_conf *mdev,
+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);
-extern void drbd_rs_controller_reset(struct drbd_conf *mdev);
+extern void drbd_rs_controller_reset(struct drbd_device *device);
-static inline void ov_out_of_sync_print(struct drbd_conf *mdev)
+static inline void ov_out_of_sync_print(struct drbd_device *device)
{
- if (mdev->ov_last_oos_size) {
- dev_err(DEV, "Out of sync: start=%llu, size=%lu (sectors)\n",
- (unsigned long long)mdev->ov_last_oos_start,
- (unsigned long)mdev->ov_last_oos_size);
+ if (device->ov_last_oos_size) {
+ drbd_err(device, "Out of sync: start=%llu, size=%lu (sectors)\n",
+ (unsigned long long)device->ov_last_oos_start,
+ (unsigned long)device->ov_last_oos_size);
}
- mdev->ov_last_oos_size=0;
+ device->ov_last_oos_size = 0;
}
-extern void drbd_csum_bio(struct drbd_conf *, struct crypto_hash *, struct bio *, void *);
-extern void drbd_csum_ee(struct drbd_conf *, struct crypto_hash *,
+extern void drbd_csum_bio(struct drbd_device *, struct crypto_hash *, struct bio *, void *);
+extern void drbd_csum_ee(struct drbd_device *, struct crypto_hash *,
struct drbd_peer_request *, void *);
/* worker callbacks */
extern int w_e_end_data_req(struct drbd_work *, int);
extern void start_resync_timer_fn(unsigned long data);
/* drbd_receiver.c */
-extern int drbd_rs_should_slow_down(struct drbd_conf *mdev, sector_t sector);
-extern int drbd_submit_peer_request(struct drbd_conf *,
+extern int drbd_receiver(struct drbd_thread *thi);
+extern int drbd_asender(struct drbd_thread *thi);
+extern int drbd_rs_should_slow_down(struct drbd_device *device, sector_t sector);
+extern int drbd_submit_peer_request(struct drbd_device *,
struct drbd_peer_request *, const unsigned,
const int);
-extern int drbd_free_peer_reqs(struct drbd_conf *, struct list_head *);
-extern struct drbd_peer_request *drbd_alloc_peer_req(struct drbd_conf *, u64,
+extern int drbd_free_peer_reqs(struct drbd_device *, struct list_head *);
+extern struct drbd_peer_request *drbd_alloc_peer_req(struct drbd_device *, u64,
sector_t, unsigned int,
gfp_t) __must_hold(local);
-extern void __drbd_free_peer_req(struct drbd_conf *, struct drbd_peer_request *,
+extern void __drbd_free_peer_req(struct drbd_device *, struct drbd_peer_request *,
int);
#define drbd_free_peer_req(m,e) __drbd_free_peer_req(m, e, 0)
#define drbd_free_net_peer_req(m,e) __drbd_free_peer_req(m, e, 1)
-extern struct page *drbd_alloc_pages(struct drbd_conf *, unsigned int, bool);
-extern void drbd_set_recv_tcq(struct drbd_conf *mdev, int tcq_enabled);
-extern void _drbd_clear_done_ee(struct drbd_conf *mdev, struct list_head *to_be_freed);
-extern void conn_flush_workqueue(struct drbd_tconn *tconn);
-extern int drbd_connected(struct drbd_conf *mdev);
-static inline void drbd_flush_workqueue(struct drbd_conf *mdev)
+extern struct page *drbd_alloc_pages(struct drbd_device *, unsigned int, bool);
+extern void drbd_set_recv_tcq(struct drbd_device *device, int tcq_enabled);
+extern void _drbd_clear_done_ee(struct drbd_device *device, struct list_head *to_be_freed);
+extern void conn_flush_workqueue(struct drbd_connection *connection);
+extern int drbd_connected(struct drbd_device *device);
+static inline void drbd_flush_workqueue(struct drbd_device *device)
{
- conn_flush_workqueue(mdev->tconn);
+ conn_flush_workqueue(first_peer_device(device)->connection);
}
/* Yes, there is kernel_setsockopt, but only since 2.6.18.
(char*)&val, sizeof(val));
}
-void drbd_bump_write_ordering(struct drbd_tconn *tconn, enum write_ordering_e wo);
+void drbd_bump_write_ordering(struct drbd_connection *connection, enum write_ordering_e wo);
/* drbd_proc.c */
extern struct proc_dir_entry *drbd_proc;
extern const char *drbd_role_str(enum drbd_role s);
/* drbd_actlog.c */
-extern int drbd_al_begin_io_nonblock(struct drbd_conf *mdev, struct drbd_interval *i);
-extern void drbd_al_begin_io_commit(struct drbd_conf *mdev, bool delegate);
-extern bool drbd_al_begin_io_fastpath(struct drbd_conf *mdev, struct drbd_interval *i);
-extern void drbd_al_begin_io(struct drbd_conf *mdev, struct drbd_interval *i, bool delegate);
-extern void drbd_al_complete_io(struct drbd_conf *mdev, struct drbd_interval *i);
-extern void drbd_rs_complete_io(struct drbd_conf *mdev, sector_t sector);
-extern int drbd_rs_begin_io(struct drbd_conf *mdev, sector_t sector);
-extern int drbd_try_rs_begin_io(struct drbd_conf *mdev, sector_t sector);
-extern void drbd_rs_cancel_all(struct drbd_conf *mdev);
-extern int drbd_rs_del_all(struct drbd_conf *mdev);
-extern void drbd_rs_failed_io(struct drbd_conf *mdev,
+extern int drbd_al_begin_io_nonblock(struct drbd_device *device, struct drbd_interval *i);
+extern void drbd_al_begin_io_commit(struct drbd_device *device, bool delegate);
+extern bool drbd_al_begin_io_fastpath(struct drbd_device *device, struct drbd_interval *i);
+extern void drbd_al_begin_io(struct drbd_device *device, struct drbd_interval *i, bool delegate);
+extern void drbd_al_complete_io(struct drbd_device *device, struct drbd_interval *i);
+extern void drbd_rs_complete_io(struct drbd_device *device, sector_t sector);
+extern int drbd_rs_begin_io(struct drbd_device *device, sector_t sector);
+extern int drbd_try_rs_begin_io(struct drbd_device *device, sector_t sector);
+extern void drbd_rs_cancel_all(struct drbd_device *device);
+extern int drbd_rs_del_all(struct drbd_device *device);
+extern void drbd_rs_failed_io(struct drbd_device *device,
sector_t sector, int size);
-extern void drbd_advance_rs_marks(struct drbd_conf *mdev, unsigned long still_to_go);
-extern void __drbd_set_in_sync(struct drbd_conf *mdev, sector_t sector,
+extern void drbd_advance_rs_marks(struct drbd_device *device, unsigned long still_to_go);
+extern void __drbd_set_in_sync(struct drbd_device *device, sector_t sector,
int size, const char *file, const unsigned int line);
-#define drbd_set_in_sync(mdev, sector, size) \
- __drbd_set_in_sync(mdev, sector, size, __FILE__, __LINE__)
-extern int __drbd_set_out_of_sync(struct drbd_conf *mdev, sector_t sector,
+#define drbd_set_in_sync(device, sector, size) \
+ __drbd_set_in_sync(device, sector, size, __FILE__, __LINE__)
+extern int __drbd_set_out_of_sync(struct drbd_device *device, sector_t sector,
int size, const char *file, const unsigned int line);
-#define drbd_set_out_of_sync(mdev, sector, size) \
- __drbd_set_out_of_sync(mdev, sector, size, __FILE__, __LINE__)
-extern void drbd_al_shrink(struct drbd_conf *mdev);
-extern int drbd_initialize_al(struct drbd_conf *, void *);
+#define drbd_set_out_of_sync(device, sector, size) \
+ __drbd_set_out_of_sync(device, sector, size, __FILE__, __LINE__)
+extern void drbd_al_shrink(struct drbd_device *device);
+extern int drbd_initialize_al(struct drbd_device *, void *);
/* drbd_nl.c */
/* state info broadcast */
};
};
};
-void drbd_bcast_event(struct drbd_conf *mdev, const struct sib_info *sib);
+void drbd_bcast_event(struct drbd_device *device, const struct sib_info *sib);
/*
* inline helper functions
}
static inline enum drbd_state_rv
-_drbd_set_state(struct drbd_conf *mdev, union drbd_state ns,
+_drbd_set_state(struct drbd_device *device, union drbd_state ns,
enum chg_state_flags flags, struct completion *done)
{
enum drbd_state_rv rv;
read_lock(&global_state_lock);
- rv = __drbd_set_state(mdev, ns, flags, done);
+ rv = __drbd_set_state(device, ns, flags, done);
read_unlock(&global_state_lock);
return rv;
}
-static inline union drbd_state drbd_read_state(struct drbd_conf *mdev)
+static inline union drbd_state drbd_read_state(struct drbd_device *device)
{
+ struct drbd_resource *resource = device->resource;
union drbd_state rv;
- rv.i = mdev->state.i;
- rv.susp = mdev->tconn->susp;
- rv.susp_nod = mdev->tconn->susp_nod;
- rv.susp_fen = mdev->tconn->susp_fen;
+ rv.i = device->state.i;
+ rv.susp = resource->susp;
+ rv.susp_nod = resource->susp_nod;
+ rv.susp_fen = resource->susp_fen;
return rv;
}
};
#define __drbd_chk_io_error(m,f) __drbd_chk_io_error_(m,f, __func__)
-static inline void __drbd_chk_io_error_(struct drbd_conf *mdev,
+static inline void __drbd_chk_io_error_(struct drbd_device *device,
enum drbd_force_detach_flags df,
const char *where)
{
enum drbd_io_error_p ep;
rcu_read_lock();
- ep = rcu_dereference(mdev->ldev->disk_conf)->on_io_error;
+ ep = rcu_dereference(device->ldev->disk_conf)->on_io_error;
rcu_read_unlock();
switch (ep) {
case EP_PASS_ON: /* FIXME would this be better named "Ignore"? */
if (df == DRBD_READ_ERROR || df == DRBD_WRITE_ERROR) {
if (__ratelimit(&drbd_ratelimit_state))
- dev_err(DEV, "Local IO failed in %s.\n", where);
- if (mdev->state.disk > D_INCONSISTENT)
- _drbd_set_state(_NS(mdev, disk, D_INCONSISTENT), CS_HARD, NULL);
+ drbd_err(device, "Local IO failed in %s.\n", where);
+ if (device->state.disk > D_INCONSISTENT)
+ _drbd_set_state(_NS(device, disk, D_INCONSISTENT), CS_HARD, NULL);
break;
}
/* NOTE fall through for DRBD_META_IO_ERROR or DRBD_FORCE_DETACH */
* we read meta data only once during attach,
* which will fail in case of errors.
*/
- set_bit(WAS_IO_ERROR, &mdev->flags);
+ set_bit(WAS_IO_ERROR, &device->flags);
if (df == DRBD_READ_ERROR)
- set_bit(WAS_READ_ERROR, &mdev->flags);
+ set_bit(WAS_READ_ERROR, &device->flags);
if (df == DRBD_FORCE_DETACH)
- set_bit(FORCE_DETACH, &mdev->flags);
- if (mdev->state.disk > D_FAILED) {
- _drbd_set_state(_NS(mdev, disk, D_FAILED), CS_HARD, NULL);
- dev_err(DEV,
+ set_bit(FORCE_DETACH, &device->flags);
+ if (device->state.disk > D_FAILED) {
+ _drbd_set_state(_NS(device, disk, D_FAILED), CS_HARD, NULL);
+ drbd_err(device,
"Local IO failed in %s. Detaching...\n", where);
}
break;
/**
* drbd_chk_io_error: Handle the on_io_error setting, should be called from all io completion handlers
- * @mdev: DRBD device.
+ * @device: DRBD device.
* @error: Error code passed to the IO completion callback
* @forcedetach: Force detach. I.e. the error happened while accessing the meta data
*
* See also drbd_main.c:after_state_ch() if (os.disk > D_FAILED && ns.disk == D_FAILED)
*/
#define drbd_chk_io_error(m,e,f) drbd_chk_io_error_(m,e,f, __func__)
-static inline void drbd_chk_io_error_(struct drbd_conf *mdev,
+static inline void drbd_chk_io_error_(struct drbd_device *device,
int error, enum drbd_force_detach_flags forcedetach, const char *where)
{
if (error) {
unsigned long flags;
- spin_lock_irqsave(&mdev->tconn->req_lock, flags);
- __drbd_chk_io_error_(mdev, forcedetach, where);
- spin_unlock_irqrestore(&mdev->tconn->req_lock, flags);
+ spin_lock_irqsave(&device->resource->req_lock, flags);
+ __drbd_chk_io_error_(device, forcedetach, where);
+ spin_unlock_irqrestore(&device->resource->req_lock, flags);
}
}
wake_up(&q->q_wait);
}
-static inline void wake_asender(struct drbd_tconn *tconn)
+static inline void wake_asender(struct drbd_connection *connection)
{
- if (test_bit(SIGNAL_ASENDER, &tconn->flags))
- force_sig(DRBD_SIG, tconn->asender.task);
+ if (test_bit(SIGNAL_ASENDER, &connection->flags))
+ force_sig(DRBD_SIG, connection->asender.task);
}
-static inline void request_ping(struct drbd_tconn *tconn)
+static inline void request_ping(struct drbd_connection *connection)
{
- set_bit(SEND_PING, &tconn->flags);
- wake_asender(tconn);
+ set_bit(SEND_PING, &connection->flags);
+ wake_asender(connection);
}
-extern void *conn_prepare_command(struct drbd_tconn *, struct drbd_socket *);
-extern void *drbd_prepare_command(struct drbd_conf *, struct drbd_socket *);
-extern int conn_send_command(struct drbd_tconn *, struct drbd_socket *,
+extern void *conn_prepare_command(struct drbd_connection *, struct drbd_socket *);
+extern void *drbd_prepare_command(struct drbd_device *, struct drbd_socket *);
+extern int conn_send_command(struct drbd_connection *, struct drbd_socket *,
enum drbd_packet, unsigned int, void *,
unsigned int);
-extern int drbd_send_command(struct drbd_conf *, struct drbd_socket *,
+extern int drbd_send_command(struct drbd_device *, struct drbd_socket *,
enum drbd_packet, unsigned int, void *,
unsigned int);
-extern int drbd_send_ping(struct drbd_tconn *tconn);
-extern int drbd_send_ping_ack(struct drbd_tconn *tconn);
-extern int drbd_send_state_req(struct drbd_conf *, union drbd_state, union drbd_state);
-extern int conn_send_state_req(struct drbd_tconn *, union drbd_state, union drbd_state);
+extern int drbd_send_ping(struct drbd_connection *connection);
+extern int drbd_send_ping_ack(struct drbd_connection *connection);
+extern int drbd_send_state_req(struct drbd_device *, union drbd_state, union drbd_state);
+extern int conn_send_state_req(struct drbd_connection *, union drbd_state, union drbd_state);
static inline void drbd_thread_stop(struct drbd_thread *thi)
{
* _req_mod(req, CONNECTION_LOST_WHILE_PENDING)
* [from tl_clear_barrier]
*/
-static inline void inc_ap_pending(struct drbd_conf *mdev)
+static inline void inc_ap_pending(struct drbd_device *device)
{
- atomic_inc(&mdev->ap_pending_cnt);
+ atomic_inc(&device->ap_pending_cnt);
}
#define ERR_IF_CNT_IS_NEGATIVE(which, func, line) \
- if (atomic_read(&mdev->which) < 0) \
- dev_err(DEV, "in %s:%d: " #which " = %d < 0 !\n", \
+ if (atomic_read(&device->which) < 0) \
+ drbd_err(device, "in %s:%d: " #which " = %d < 0 !\n", \
func, line, \
- atomic_read(&mdev->which))
+ atomic_read(&device->which))
-#define dec_ap_pending(mdev) _dec_ap_pending(mdev, __FUNCTION__, __LINE__)
-static inline void _dec_ap_pending(struct drbd_conf *mdev, const char *func, int line)
+#define dec_ap_pending(device) _dec_ap_pending(device, __FUNCTION__, __LINE__)
+static inline void _dec_ap_pending(struct drbd_device *device, const char *func, int line)
{
- if (atomic_dec_and_test(&mdev->ap_pending_cnt))
- wake_up(&mdev->misc_wait);
+ if (atomic_dec_and_test(&device->ap_pending_cnt))
+ wake_up(&device->misc_wait);
ERR_IF_CNT_IS_NEGATIVE(ap_pending_cnt, func, line);
}
* C_SYNC_SOURCE sends P_RS_DATA_REPLY (and expects P_WRITE_ACK with ID_SYNCER)
* (or P_NEG_ACK with ID_SYNCER)
*/
-static inline void inc_rs_pending(struct drbd_conf *mdev)
+static inline void inc_rs_pending(struct drbd_device *device)
{
- atomic_inc(&mdev->rs_pending_cnt);
+ atomic_inc(&device->rs_pending_cnt);
}
-#define dec_rs_pending(mdev) _dec_rs_pending(mdev, __FUNCTION__, __LINE__)
-static inline void _dec_rs_pending(struct drbd_conf *mdev, const char *func, int line)
+#define dec_rs_pending(device) _dec_rs_pending(device, __FUNCTION__, __LINE__)
+static inline void _dec_rs_pending(struct drbd_device *device, const char *func, int line)
{
- atomic_dec(&mdev->rs_pending_cnt);
+ atomic_dec(&device->rs_pending_cnt);
ERR_IF_CNT_IS_NEGATIVE(rs_pending_cnt, func, line);
}
* receive_DataRequest (receive_RSDataRequest) we need to send back P_DATA
* receive_Barrier_* we need to send a P_BARRIER_ACK
*/
-static inline void inc_unacked(struct drbd_conf *mdev)
+static inline void inc_unacked(struct drbd_device *device)
{
- atomic_inc(&mdev->unacked_cnt);
+ atomic_inc(&device->unacked_cnt);
}
-#define dec_unacked(mdev) _dec_unacked(mdev, __FUNCTION__, __LINE__)
-static inline void _dec_unacked(struct drbd_conf *mdev, const char *func, int line)
+#define dec_unacked(device) _dec_unacked(device, __FUNCTION__, __LINE__)
+static inline void _dec_unacked(struct drbd_device *device, const char *func, int line)
{
- atomic_dec(&mdev->unacked_cnt);
+ atomic_dec(&device->unacked_cnt);
ERR_IF_CNT_IS_NEGATIVE(unacked_cnt, func, line);
}
-#define sub_unacked(mdev, n) _sub_unacked(mdev, n, __FUNCTION__, __LINE__)
-static inline void _sub_unacked(struct drbd_conf *mdev, int n, const char *func, int line)
+#define sub_unacked(device, n) _sub_unacked(device, n, __FUNCTION__, __LINE__)
+static inline void _sub_unacked(struct drbd_device *device, int n, const char *func, int line)
{
- atomic_sub(n, &mdev->unacked_cnt);
+ atomic_sub(n, &device->unacked_cnt);
ERR_IF_CNT_IS_NEGATIVE(unacked_cnt, func, line);
}
/**
- * get_ldev() - Increase the ref count on mdev->ldev. Returns 0 if there is no ldev
+ * get_ldev() - Increase the ref count on device->ldev. Returns 0 if there is no ldev
* @M: DRBD device.
*
- * You have to call put_ldev() when finished working with mdev->ldev.
+ * You have to call put_ldev() when finished working with device->ldev.
*/
#define get_ldev(M) __cond_lock(local, _get_ldev_if_state(M,D_INCONSISTENT))
#define get_ldev_if_state(M,MINS) __cond_lock(local, _get_ldev_if_state(M,MINS))
-static inline void put_ldev(struct drbd_conf *mdev)
+static inline void put_ldev(struct drbd_device *device)
{
- int i = atomic_dec_return(&mdev->local_cnt);
+ int i = atomic_dec_return(&device->local_cnt);
/* This may be called from some endio handler,
* so we must not sleep here. */
__release(local);
- D_ASSERT(i >= 0);
+ D_ASSERT(device, i >= 0);
if (i == 0) {
- if (mdev->state.disk == D_DISKLESS)
+ if (device->state.disk == D_DISKLESS)
/* even internal references gone, safe to destroy */
- drbd_ldev_destroy(mdev);
- if (mdev->state.disk == D_FAILED) {
+ drbd_ldev_destroy(device);
+ if (device->state.disk == D_FAILED) {
/* all application IO references gone. */
- if (!test_and_set_bit(GO_DISKLESS, &mdev->flags))
- drbd_queue_work(&mdev->tconn->sender_work, &mdev->go_diskless);
+ if (!test_and_set_bit(GO_DISKLESS, &device->flags))
+ drbd_queue_work(&first_peer_device(device)->connection->sender_work, &device->go_diskless);
}
- wake_up(&mdev->misc_wait);
+ wake_up(&device->misc_wait);
}
}
#ifndef __CHECKER__
-static inline int _get_ldev_if_state(struct drbd_conf *mdev, enum drbd_disk_state mins)
+static inline int _get_ldev_if_state(struct drbd_device *device, enum drbd_disk_state mins)
{
int io_allowed;
/* never get a reference while D_DISKLESS */
- if (mdev->state.disk == D_DISKLESS)
+ if (device->state.disk == D_DISKLESS)
return 0;
- atomic_inc(&mdev->local_cnt);
- io_allowed = (mdev->state.disk >= mins);
+ atomic_inc(&device->local_cnt);
+ io_allowed = (device->state.disk >= mins);
if (!io_allowed)
- put_ldev(mdev);
+ put_ldev(device);
return io_allowed;
}
#else
-extern int _get_ldev_if_state(struct drbd_conf *mdev, enum drbd_disk_state mins);
+extern int _get_ldev_if_state(struct drbd_device *device, enum drbd_disk_state mins);
#endif
/* you must have an "get_ldev" reference */
-static inline void drbd_get_syncer_progress(struct drbd_conf *mdev,
+static inline void drbd_get_syncer_progress(struct drbd_device *device,
unsigned long *bits_left, unsigned int *per_mil_done)
{
/* this is to break it at compile time when we change that, in case we
* want to support more than (1<<32) bits on a 32bit arch. */
- typecheck(unsigned long, mdev->rs_total);
+ typecheck(unsigned long, device->rs_total);
/* note: both rs_total and rs_left are in bits, i.e. in
* units of BM_BLOCK_SIZE.
* for the percentage, we don't care. */
- if (mdev->state.conn == C_VERIFY_S || mdev->state.conn == C_VERIFY_T)
- *bits_left = mdev->ov_left;
+ if (device->state.conn == C_VERIFY_S || device->state.conn == C_VERIFY_T)
+ *bits_left = device->ov_left;
else
- *bits_left = drbd_bm_total_weight(mdev) - mdev->rs_failed;
+ *bits_left = drbd_bm_total_weight(device) - device->rs_failed;
/* >> 10 to prevent overflow,
* +1 to prevent division by zero */
- if (*bits_left > mdev->rs_total) {
+ if (*bits_left > device->rs_total) {
/* doh. maybe a logic bug somewhere.
* may also be just a race condition
* between this and a disconnect during sync.
* for now, just prevent in-kernel buffer overflow.
*/
smp_rmb();
- dev_warn(DEV, "cs:%s rs_left=%lu > rs_total=%lu (rs_failed %lu)\n",
- drbd_conn_str(mdev->state.conn),
- *bits_left, mdev->rs_total, mdev->rs_failed);
+ drbd_warn(device, "cs:%s rs_left=%lu > rs_total=%lu (rs_failed %lu)\n",
+ drbd_conn_str(device->state.conn),
+ *bits_left, device->rs_total, device->rs_failed);
*per_mil_done = 0;
} else {
/* Make sure the division happens in long context.
* Note: currently we don't support such large bitmaps on 32bit
* arch anyways, but no harm done to be prepared for it here.
*/
- unsigned int shift = mdev->rs_total > UINT_MAX ? 16 : 10;
+ unsigned int shift = device->rs_total > UINT_MAX ? 16 : 10;
unsigned long left = *bits_left >> shift;
- unsigned long total = 1UL + (mdev->rs_total >> shift);
+ unsigned long total = 1UL + (device->rs_total >> shift);
unsigned long tmp = 1000UL - left * 1000UL/total;
*per_mil_done = tmp;
}
/* this throttles on-the-fly application requests
* according to max_buffers settings;
* maybe re-implement using semaphores? */
-static inline int drbd_get_max_buffers(struct drbd_conf *mdev)
+static inline int drbd_get_max_buffers(struct drbd_device *device)
{
struct net_conf *nc;
int mxb;
rcu_read_lock();
- nc = rcu_dereference(mdev->tconn->net_conf);
+ nc = rcu_dereference(first_peer_device(device)->connection->net_conf);
mxb = nc ? nc->max_buffers : 1000000; /* arbitrary limit on open requests */
rcu_read_unlock();
return mxb;
}
-static inline int drbd_state_is_stable(struct drbd_conf *mdev)
+static inline int drbd_state_is_stable(struct drbd_device *device)
{
- union drbd_dev_state s = mdev->state;
+ union drbd_dev_state s = device->state;
/* DO NOT add a default clause, we want the compiler to warn us
* for any newly introduced state we may have forgotten to add here */
/* Allow IO in BM exchange states with new protocols */
case C_WF_BITMAP_S:
- if (mdev->tconn->agreed_pro_version < 96)
+ if (first_peer_device(device)->connection->agreed_pro_version < 96)
return 0;
break;
return 1;
}
-static inline int drbd_suspended(struct drbd_conf *mdev)
+static inline int drbd_suspended(struct drbd_device *device)
{
- struct drbd_tconn *tconn = mdev->tconn;
+ struct drbd_resource *resource = device->resource;
- return tconn->susp || tconn->susp_fen || tconn->susp_nod;
+ return resource->susp || resource->susp_fen || resource->susp_nod;
}
-static inline bool may_inc_ap_bio(struct drbd_conf *mdev)
+static inline bool may_inc_ap_bio(struct drbd_device *device)
{
- int mxb = drbd_get_max_buffers(mdev);
+ int mxb = drbd_get_max_buffers(device);
- if (drbd_suspended(mdev))
+ if (drbd_suspended(device))
return false;
- if (test_bit(SUSPEND_IO, &mdev->flags))
+ if (test_bit(SUSPEND_IO, &device->flags))
return false;
/* to avoid potential deadlock or bitmap corruption,
* to start during "stable" states. */
/* no new io accepted when attaching or detaching the disk */
- if (!drbd_state_is_stable(mdev))
+ if (!drbd_state_is_stable(device))
return false;
/* since some older kernels don't have atomic_add_unless,
* and we are within the spinlock anyways, we have this workaround. */
- if (atomic_read(&mdev->ap_bio_cnt) > mxb)
+ if (atomic_read(&device->ap_bio_cnt) > mxb)
return false;
- if (test_bit(BITMAP_IO, &mdev->flags))
+ if (test_bit(BITMAP_IO, &device->flags))
return false;
return true;
}
-static inline bool inc_ap_bio_cond(struct drbd_conf *mdev)
+static inline bool inc_ap_bio_cond(struct drbd_device *device)
{
bool rv = false;
- spin_lock_irq(&mdev->tconn->req_lock);
- rv = may_inc_ap_bio(mdev);
+ spin_lock_irq(&device->resource->req_lock);
+ rv = may_inc_ap_bio(device);
if (rv)
- atomic_inc(&mdev->ap_bio_cnt);
- spin_unlock_irq(&mdev->tconn->req_lock);
+ atomic_inc(&device->ap_bio_cnt);
+ spin_unlock_irq(&device->resource->req_lock);
return rv;
}
-static inline void inc_ap_bio(struct drbd_conf *mdev)
+static inline void inc_ap_bio(struct drbd_device *device)
{
/* we wait here
* as long as the device is suspended
* to avoid races with the reconnect code,
* we need to atomic_inc within the spinlock. */
- wait_event(mdev->misc_wait, inc_ap_bio_cond(mdev));
+ wait_event(device->misc_wait, inc_ap_bio_cond(device));
}
-static inline void dec_ap_bio(struct drbd_conf *mdev)
+static inline void dec_ap_bio(struct drbd_device *device)
{
- int mxb = drbd_get_max_buffers(mdev);
- int ap_bio = atomic_dec_return(&mdev->ap_bio_cnt);
+ int mxb = drbd_get_max_buffers(device);
+ int ap_bio = atomic_dec_return(&device->ap_bio_cnt);
- D_ASSERT(ap_bio >= 0);
+ D_ASSERT(device, ap_bio >= 0);
- if (ap_bio == 0 && test_bit(BITMAP_IO, &mdev->flags)) {
- if (!test_and_set_bit(BITMAP_IO_QUEUED, &mdev->flags))
- drbd_queue_work(&mdev->tconn->sender_work, &mdev->bm_io_work.w);
+ if (ap_bio == 0 && test_bit(BITMAP_IO, &device->flags)) {
+ if (!test_and_set_bit(BITMAP_IO_QUEUED, &device->flags))
+ drbd_queue_work(&first_peer_device(device)->connection->sender_work, &device->bm_io_work.w);
}
/* this currently does wake_up for every dec_ap_bio!
* maybe rather introduce some type of hysteresis?
* e.g. (ap_bio == mxb/2 || ap_bio == 0) ? */
if (ap_bio < mxb)
- wake_up(&mdev->misc_wait);
+ wake_up(&device->misc_wait);
}
-static inline bool verify_can_do_stop_sector(struct drbd_conf *mdev)
+static inline bool verify_can_do_stop_sector(struct drbd_device *device)
{
- return mdev->tconn->agreed_pro_version >= 97 &&
- mdev->tconn->agreed_pro_version != 100;
+ return first_peer_device(device)->connection->agreed_pro_version >= 97 &&
+ first_peer_device(device)->connection->agreed_pro_version != 100;
}
-static inline int drbd_set_ed_uuid(struct drbd_conf *mdev, u64 val)
+static inline int drbd_set_ed_uuid(struct drbd_device *device, u64 val)
{
- int changed = mdev->ed_uuid != val;
- mdev->ed_uuid = val;
+ int changed = device->ed_uuid != val;
+ device->ed_uuid = val;
return changed;
}
-static inline int drbd_queue_order_type(struct drbd_conf *mdev)
+static inline int drbd_queue_order_type(struct drbd_device *device)
{
/* sorry, we currently have no working implementation
* of distributed TCQ stuff */
return QUEUE_ORDERED_NONE;
}
-static inline void drbd_md_flush(struct drbd_conf *mdev)
+static inline void drbd_md_flush(struct drbd_device *device)
{
int r;
- if (mdev->ldev == NULL) {
- dev_warn(DEV, "mdev->ldev == NULL in drbd_md_flush\n");
+ if (device->ldev == NULL) {
+ drbd_warn(device, "device->ldev == NULL in drbd_md_flush\n");
return;
}
- if (test_bit(MD_NO_FUA, &mdev->flags))
+ if (test_bit(MD_NO_FUA, &device->flags))
return;
- r = blkdev_issue_flush(mdev->ldev->md_bdev, GFP_NOIO, NULL);
+ r = blkdev_issue_flush(device->ldev->md_bdev, GFP_NOIO, NULL);
if (r) {
- set_bit(MD_NO_FUA, &mdev->flags);
- dev_err(DEV, "meta data flush failed with status %d, disabling md-flushes\n", r);
+ set_bit(MD_NO_FUA, &device->flags);
+ drbd_err(device, "meta data flush failed with status %d, disabling md-flushes\n", r);
}
}
+static inline struct drbd_connection *first_connection(struct drbd_resource *resource)
+{
+ return list_first_entry(&resource->connections,
+ struct drbd_connection, connections);
+}
+
#endif
projects / deliverable / linux.git / blobdiff