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Message-Id: <1387835456-29695-27-git-send-email-philipp.reisner@linbit.com>
Date: Mon, 23 Dec 2013 22:50:55 +0100
From: Philipp Reisner <philipp.reisner@...bit.com>
To: linux-kernel@...r.kernel.org, Jens Axboe <axboe@...nel.dk>
Cc: drbd-dev@...ts.linbit.com
Subject: [PATCH 26/27] drbd: Use the right peer device
From: Andreas Gruenbacher <agruen@...nel.org>
in w_e_ (peer request) callbacks and in peer request I/O completion handlers
Signed-off-by: Andreas Gruenbacher <agruen@...bit.com>
Signed-off-by: Philipp Reisner <philipp.reisner@...bit.com>
---
drivers/block/drbd/drbd_worker.c | 69 +++++++++++++++++++++-----------------
1 file changed, 38 insertions(+), 31 deletions(-)
diff --git a/drivers/block/drbd/drbd_worker.c b/drivers/block/drbd/drbd_worker.c
index b826648..bf55f13 100644
--- a/drivers/block/drbd/drbd_worker.c
+++ b/drivers/block/drbd/drbd_worker.c
@@ -100,7 +100,8 @@ void drbd_md_io_complete(struct bio *bio, int error)
void drbd_endio_read_sec_final(struct drbd_peer_request *peer_req) __releases(local)
{
unsigned long flags = 0;
- struct drbd_device *device = peer_req->peer_device->device;
+ struct drbd_peer_device *peer_device = peer_req->peer_device;
+ struct drbd_device *device = peer_device->device;
spin_lock_irqsave(&device->resource->req_lock, flags);
device->read_cnt += peer_req->i.size >> 9;
@@ -111,8 +112,7 @@ void drbd_endio_read_sec_final(struct drbd_peer_request *peer_req) __releases(lo
__drbd_chk_io_error(device, DRBD_READ_ERROR);
spin_unlock_irqrestore(&device->resource->req_lock, flags);
- drbd_queue_work(&first_peer_device(device)->connection->sender_work,
- &peer_req->w);
+ drbd_queue_work(&peer_device->connection->sender_work, &peer_req->w);
put_ldev(device);
}
@@ -121,7 +121,8 @@ void drbd_endio_read_sec_final(struct drbd_peer_request *peer_req) __releases(lo
static void drbd_endio_write_sec_final(struct drbd_peer_request *peer_req) __releases(local)
{
unsigned long flags = 0;
- struct drbd_device *device = peer_req->peer_device->device;
+ struct drbd_peer_device *peer_device = peer_req->peer_device;
+ struct drbd_device *device = peer_device->device;
struct drbd_interval i;
int do_wake;
u64 block_id;
@@ -162,7 +163,7 @@ static void drbd_endio_write_sec_final(struct drbd_peer_request *peer_req) __rel
if (do_al_complete_io)
drbd_al_complete_io(device, &i);
- wake_asender(first_peer_device(device)->connection);
+ wake_asender(peer_device->connection);
put_ldev(device);
}
@@ -334,7 +335,8 @@ void drbd_csum_bio(struct crypto_hash *tfm, struct bio *bio, void *digest)
static int w_e_send_csum(struct drbd_work *w, int cancel)
{
struct drbd_peer_request *peer_req = container_of(w, struct drbd_peer_request, w);
- struct drbd_device *device = peer_req->peer_device->device;
+ struct drbd_peer_device *peer_device = peer_req->peer_device;
+ struct drbd_device *device = peer_device->device;
int digest_size;
void *digest;
int err = 0;
@@ -345,12 +347,12 @@ static int w_e_send_csum(struct drbd_work *w, int cancel)
if (unlikely((peer_req->flags & EE_WAS_ERROR) != 0))
goto out;
- digest_size = crypto_hash_digestsize(first_peer_device(device)->connection->csums_tfm);
+ digest_size = crypto_hash_digestsize(peer_device->connection->csums_tfm);
digest = kmalloc(digest_size, GFP_NOIO);
if (digest) {
sector_t sector = peer_req->i.sector;
unsigned int size = peer_req->i.size;
- drbd_csum_ee(first_peer_device(device)->connection->csums_tfm, peer_req, digest);
+ drbd_csum_ee(peer_device->connection->csums_tfm, peer_req, digest);
/* Free peer_req and pages before send.
* In case we block on congestion, we could otherwise run into
* some distributed deadlock, if the other side blocks on
@@ -359,7 +361,7 @@ static int w_e_send_csum(struct drbd_work *w, int cancel)
drbd_free_peer_req(device, peer_req);
peer_req = NULL;
inc_rs_pending(device);
- err = drbd_send_drequest_csum(first_peer_device(device), sector, size,
+ err = drbd_send_drequest_csum(peer_device, sector, size,
digest, digest_size,
P_CSUM_RS_REQUEST);
kfree(digest);
@@ -995,7 +997,8 @@ static void move_to_net_ee_or_free(struct drbd_device *device, struct drbd_peer_
int w_e_end_data_req(struct drbd_work *w, int cancel)
{
struct drbd_peer_request *peer_req = container_of(w, struct drbd_peer_request, w);
- struct drbd_device *device = peer_req->peer_device->device;
+ struct drbd_peer_device *peer_device = peer_req->peer_device;
+ struct drbd_device *device = peer_device->device;
int err;
if (unlikely(cancel)) {
@@ -1005,13 +1008,13 @@ int w_e_end_data_req(struct drbd_work *w, int cancel)
}
if (likely((peer_req->flags & EE_WAS_ERROR) == 0)) {
- err = drbd_send_block(first_peer_device(device), P_DATA_REPLY, peer_req);
+ err = drbd_send_block(peer_device, P_DATA_REPLY, peer_req);
} else {
if (__ratelimit(&drbd_ratelimit_state))
drbd_err(device, "Sending NegDReply. sector=%llus.\n",
(unsigned long long)peer_req->i.sector);
- err = drbd_send_ack(first_peer_device(device), P_NEG_DREPLY, peer_req);
+ err = drbd_send_ack(peer_device, P_NEG_DREPLY, peer_req);
}
dec_unacked(device);
@@ -1031,7 +1034,8 @@ int w_e_end_data_req(struct drbd_work *w, int cancel)
int w_e_end_rsdata_req(struct drbd_work *w, int cancel)
{
struct drbd_peer_request *peer_req = container_of(w, struct drbd_peer_request, w);
- struct drbd_device *device = peer_req->peer_device->device;
+ struct drbd_peer_device *peer_device = peer_req->peer_device;
+ struct drbd_device *device = peer_device->device;
int err;
if (unlikely(cancel)) {
@@ -1046,11 +1050,11 @@ int w_e_end_rsdata_req(struct drbd_work *w, int cancel)
}
if (device->state.conn == C_AHEAD) {
- err = drbd_send_ack(first_peer_device(device), P_RS_CANCEL, peer_req);
+ err = drbd_send_ack(peer_device, P_RS_CANCEL, peer_req);
} else if (likely((peer_req->flags & EE_WAS_ERROR) == 0)) {
if (likely(device->state.pdsk >= D_INCONSISTENT)) {
inc_rs_pending(device);
- err = drbd_send_block(first_peer_device(device), P_RS_DATA_REPLY, peer_req);
+ err = drbd_send_block(peer_device, P_RS_DATA_REPLY, peer_req);
} else {
if (__ratelimit(&drbd_ratelimit_state))
drbd_err(device, "Not sending RSDataReply, "
@@ -1062,7 +1066,7 @@ int w_e_end_rsdata_req(struct drbd_work *w, int cancel)
drbd_err(device, "Sending NegRSDReply. sector %llus.\n",
(unsigned long long)peer_req->i.sector);
- err = drbd_send_ack(first_peer_device(device), P_NEG_RS_DREPLY, peer_req);
+ err = drbd_send_ack(peer_device, P_NEG_RS_DREPLY, peer_req);
/* update resync data with failure */
drbd_rs_failed_io(device, peer_req->i.sector, peer_req->i.size);
@@ -1080,7 +1084,8 @@ int w_e_end_rsdata_req(struct drbd_work *w, int cancel)
int w_e_end_csum_rs_req(struct drbd_work *w, int cancel)
{
struct drbd_peer_request *peer_req = container_of(w, struct drbd_peer_request, w);
- struct drbd_device *device = peer_req->peer_device->device;
+ struct drbd_peer_device *peer_device = peer_req->peer_device;
+ struct drbd_device *device = peer_device->device;
struct digest_info *di;
int digest_size;
void *digest = NULL;
@@ -1103,13 +1108,13 @@ int w_e_end_csum_rs_req(struct drbd_work *w, int cancel)
/* quick hack to try to avoid a race against reconfiguration.
* a real fix would be much more involved,
* introducing more locking mechanisms */
- if (first_peer_device(device)->connection->csums_tfm) {
- digest_size = crypto_hash_digestsize(first_peer_device(device)->connection->csums_tfm);
+ if (peer_device->connection->csums_tfm) {
+ digest_size = crypto_hash_digestsize(peer_device->connection->csums_tfm);
D_ASSERT(device, digest_size == di->digest_size);
digest = kmalloc(digest_size, GFP_NOIO);
}
if (digest) {
- drbd_csum_ee(first_peer_device(device)->connection->csums_tfm, peer_req, digest);
+ drbd_csum_ee(peer_device->connection->csums_tfm, peer_req, digest);
eq = !memcmp(digest, di->digest, digest_size);
kfree(digest);
}
@@ -1118,16 +1123,16 @@ int w_e_end_csum_rs_req(struct drbd_work *w, int cancel)
drbd_set_in_sync(device, peer_req->i.sector, peer_req->i.size);
/* rs_same_csums unit is BM_BLOCK_SIZE */
device->rs_same_csum += peer_req->i.size >> BM_BLOCK_SHIFT;
- err = drbd_send_ack(first_peer_device(device), P_RS_IS_IN_SYNC, peer_req);
+ err = drbd_send_ack(peer_device, P_RS_IS_IN_SYNC, peer_req);
} else {
inc_rs_pending(device);
peer_req->block_id = ID_SYNCER; /* By setting block_id, digest pointer becomes invalid! */
peer_req->flags &= ~EE_HAS_DIGEST; /* This peer request no longer has a digest pointer */
kfree(di);
- err = drbd_send_block(first_peer_device(device), P_RS_DATA_REPLY, peer_req);
+ err = drbd_send_block(peer_device, P_RS_DATA_REPLY, peer_req);
}
} else {
- err = drbd_send_ack(first_peer_device(device), P_NEG_RS_DREPLY, peer_req);
+ err = drbd_send_ack(peer_device, P_NEG_RS_DREPLY, peer_req);
if (__ratelimit(&drbd_ratelimit_state))
drbd_err(device, "Sending NegDReply. I guess it gets messy.\n");
}
@@ -1143,7 +1148,8 @@ int w_e_end_csum_rs_req(struct drbd_work *w, int cancel)
int w_e_end_ov_req(struct drbd_work *w, int cancel)
{
struct drbd_peer_request *peer_req = container_of(w, struct drbd_peer_request, w);
- struct drbd_device *device = peer_req->peer_device->device;
+ struct drbd_peer_device *peer_device = peer_req->peer_device;
+ struct drbd_device *device = peer_device->device;
sector_t sector = peer_req->i.sector;
unsigned int size = peer_req->i.size;
int digest_size;
@@ -1153,7 +1159,7 @@ int w_e_end_ov_req(struct drbd_work *w, int cancel)
if (unlikely(cancel))
goto out;
- digest_size = crypto_hash_digestsize(first_peer_device(device)->connection->verify_tfm);
+ digest_size = crypto_hash_digestsize(peer_device->connection->verify_tfm);
digest = kmalloc(digest_size, GFP_NOIO);
if (!digest) {
err = 1; /* terminate the connection in case the allocation failed */
@@ -1161,7 +1167,7 @@ int w_e_end_ov_req(struct drbd_work *w, int cancel)
}
if (likely(!(peer_req->flags & EE_WAS_ERROR)))
- drbd_csum_ee(first_peer_device(device)->connection->verify_tfm, peer_req, digest);
+ drbd_csum_ee(peer_device->connection->verify_tfm, peer_req, digest);
else
memset(digest, 0, digest_size);
@@ -1173,7 +1179,7 @@ int w_e_end_ov_req(struct drbd_work *w, int cancel)
drbd_free_peer_req(device, peer_req);
peer_req = NULL;
inc_rs_pending(device);
- err = drbd_send_drequest_csum(first_peer_device(device), sector, size, digest, digest_size, P_OV_REPLY);
+ err = drbd_send_drequest_csum(peer_device, sector, size, digest, digest_size, P_OV_REPLY);
if (err)
dec_rs_pending(device);
kfree(digest);
@@ -1199,7 +1205,8 @@ void drbd_ov_out_of_sync_found(struct drbd_device *device, sector_t sector, int
int w_e_end_ov_reply(struct drbd_work *w, int cancel)
{
struct drbd_peer_request *peer_req = container_of(w, struct drbd_peer_request, w);
- struct drbd_device *device = peer_req->peer_device->device;
+ struct drbd_peer_device *peer_device = peer_req->peer_device;
+ struct drbd_device *device = peer_device->device;
struct digest_info *di;
void *digest;
sector_t sector = peer_req->i.sector;
@@ -1224,10 +1231,10 @@ int w_e_end_ov_reply(struct drbd_work *w, int cancel)
di = peer_req->digest;
if (likely((peer_req->flags & EE_WAS_ERROR) == 0)) {
- digest_size = crypto_hash_digestsize(first_peer_device(device)->connection->verify_tfm);
+ digest_size = crypto_hash_digestsize(peer_device->connection->verify_tfm);
digest = kmalloc(digest_size, GFP_NOIO);
if (digest) {
- drbd_csum_ee(first_peer_device(device)->connection->verify_tfm, peer_req, digest);
+ drbd_csum_ee(peer_device->connection->verify_tfm, peer_req, digest);
D_ASSERT(device, digest_size == di->digest_size);
eq = !memcmp(digest, di->digest, digest_size);
@@ -1246,7 +1253,7 @@ int w_e_end_ov_reply(struct drbd_work *w, int cancel)
else
ov_out_of_sync_print(device);
- err = drbd_send_ack_ex(first_peer_device(device), P_OV_RESULT, sector, size,
+ err = drbd_send_ack_ex(peer_device, P_OV_RESULT, sector, size,
eq ? ID_IN_SYNC : ID_OUT_OF_SYNC);
dec_unacked(device);
--
1.7.9.5
--
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