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* [PATCH 0/7] DRBD updates for 5.19
@ 2022-04-06 19:07 Christoph Böhmwalder
  2022-04-06 19:07 ` [PATCH 1/7] drbd: fix duplicate array initializer Christoph Böhmwalder
                   ` (7 more replies)
  0 siblings, 8 replies; 9+ messages in thread
From: Christoph Böhmwalder @ 2022-04-06 19:07 UTC (permalink / raw)
  To: Jens Axboe
  Cc: drbd-dev, linux-kernel, Lars Ellenberg, Philipp Reisner,
	linux-block, Christoph Böhmwalder

Mostly cosmetic changes, bound for 5.19.

Arnd Bergmann (2):
  drbd: fix duplicate array initializer
  drbd: address enum mismatch warnings

Cai Huoqing (2):
  drbd: Make use of PFN_UP helper macro
  drbd: Replace "unsigned" with "unsigned int"

Haowen Bai (1):
  drbd: Return true/false (not 1/0) from bool functions

Jiapeng Chong (1):
  block: drbd: drbd_receiver: Remove redundant assignment to err

Uladzislau Rezki (Sony) (1):
  drdb: Switch to kvfree_rcu() API

 drivers/block/drbd/drbd_bitmap.c   |  2 +-
 drivers/block/drbd/drbd_main.c     | 11 +++++-----
 drivers/block/drbd/drbd_nl.c       | 33 +++++++++++++++---------------
 drivers/block/drbd/drbd_receiver.c | 15 ++++++--------
 drivers/block/drbd/drbd_req.c      |  2 +-
 drivers/block/drbd/drbd_state.c    |  3 +--
 drivers/block/drbd/drbd_worker.c   |  2 +-
 7 files changed, 32 insertions(+), 36 deletions(-)

-- 
2.35.1


^ permalink raw reply	[flat|nested] 9+ messages in thread

* [PATCH 1/7] drbd: fix duplicate array initializer
  2022-04-06 19:07 [PATCH 0/7] DRBD updates for 5.19 Christoph Böhmwalder
@ 2022-04-06 19:07 ` Christoph Böhmwalder
  2022-04-06 19:07 ` [PATCH 2/7] drbd: address enum mismatch warnings Christoph Böhmwalder
                   ` (6 subsequent siblings)
  7 siblings, 0 replies; 9+ messages in thread
From: Christoph Böhmwalder @ 2022-04-06 19:07 UTC (permalink / raw)
  To: Jens Axboe
  Cc: drbd-dev, linux-kernel, Lars Ellenberg, Philipp Reisner,
	linux-block, Arnd Bergmann, Christoph Böhmwalder

From: Arnd Bergmann <arnd@arndb.de>

There are two initializers for P_RETRY_WRITE:

drivers/block/drbd/drbd_main.c:3676:22: warning: initialized field overwritten [-Woverride-init]

Remove the first one since it was already ignored by the compiler
and reorder the list to match the enum definition. As P_ZEROES had
no entry, add that one instead.

Fixes: 036b17eaab93 ("drbd: Receiving part for the PROTOCOL_UPDATE packet")
Fixes: f31e583aa2c2 ("drbd: introduce P_ZEROES (REQ_OP_WRITE_ZEROES on the "wire")")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Christoph Böhmwalder <christoph.boehmwalder@linbit.com>
---
 drivers/block/drbd/drbd_main.c | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c
index 9676a1d214bc..90a0814343df 100644
--- a/drivers/block/drbd/drbd_main.c
+++ b/drivers/block/drbd/drbd_main.c
@@ -3587,9 +3587,8 @@ const char *cmdname(enum drbd_packet cmd)
 	 * when we want to support more than
 	 * one PRO_VERSION */
 	static const char *cmdnames[] = {
+
 		[P_DATA]	        = "Data",
-		[P_WSAME]	        = "WriteSame",
-		[P_TRIM]	        = "Trim",
 		[P_DATA_REPLY]	        = "DataReply",
 		[P_RS_DATA_REPLY]	= "RSDataReply",
 		[P_BARRIER]	        = "Barrier",
@@ -3600,7 +3599,6 @@ const char *cmdname(enum drbd_packet cmd)
 		[P_DATA_REQUEST]	= "DataRequest",
 		[P_RS_DATA_REQUEST]     = "RSDataRequest",
 		[P_SYNC_PARAM]	        = "SyncParam",
-		[P_SYNC_PARAM89]	= "SyncParam89",
 		[P_PROTOCOL]            = "ReportProtocol",
 		[P_UUIDS]	        = "ReportUUIDs",
 		[P_SIZES]	        = "ReportSizes",
@@ -3608,6 +3606,7 @@ const char *cmdname(enum drbd_packet cmd)
 		[P_SYNC_UUID]           = "ReportSyncUUID",
 		[P_AUTH_CHALLENGE]      = "AuthChallenge",
 		[P_AUTH_RESPONSE]	= "AuthResponse",
+		[P_STATE_CHG_REQ]       = "StateChgRequest",
 		[P_PING]		= "Ping",
 		[P_PING_ACK]	        = "PingAck",
 		[P_RECV_ACK]	        = "RecvAck",
@@ -3618,23 +3617,25 @@ const char *cmdname(enum drbd_packet cmd)
 		[P_NEG_DREPLY]	        = "NegDReply",
 		[P_NEG_RS_DREPLY]	= "NegRSDReply",
 		[P_BARRIER_ACK]	        = "BarrierAck",
-		[P_STATE_CHG_REQ]       = "StateChgRequest",
 		[P_STATE_CHG_REPLY]     = "StateChgReply",
 		[P_OV_REQUEST]          = "OVRequest",
 		[P_OV_REPLY]            = "OVReply",
 		[P_OV_RESULT]           = "OVResult",
 		[P_CSUM_RS_REQUEST]     = "CsumRSRequest",
 		[P_RS_IS_IN_SYNC]	= "CsumRSIsInSync",
+		[P_SYNC_PARAM89]	= "SyncParam89",
 		[P_COMPRESSED_BITMAP]   = "CBitmap",
 		[P_DELAY_PROBE]         = "DelayProbe",
 		[P_OUT_OF_SYNC]		= "OutOfSync",
-		[P_RETRY_WRITE]		= "RetryWrite",
 		[P_RS_CANCEL]		= "RSCancel",
 		[P_CONN_ST_CHG_REQ]	= "conn_st_chg_req",
 		[P_CONN_ST_CHG_REPLY]	= "conn_st_chg_reply",
 		[P_PROTOCOL_UPDATE]	= "protocol_update",
+		[P_TRIM]	        = "Trim",
 		[P_RS_THIN_REQ]         = "rs_thin_req",
 		[P_RS_DEALLOCATED]      = "rs_deallocated",
+		[P_WSAME]	        = "WriteSame",
+		[P_ZEROES]		= "Zeroes",
 
 		/* enum drbd_packet, but not commands - obsoleted flags:
 		 *	P_MAY_IGNORE
-- 
2.35.1


^ permalink raw reply related	[flat|nested] 9+ messages in thread

* [PATCH 2/7] drbd: address enum mismatch warnings
  2022-04-06 19:07 [PATCH 0/7] DRBD updates for 5.19 Christoph Böhmwalder
  2022-04-06 19:07 ` [PATCH 1/7] drbd: fix duplicate array initializer Christoph Böhmwalder
@ 2022-04-06 19:07 ` Christoph Böhmwalder
  2022-04-06 19:07 ` [PATCH 3/7] block: drbd: drbd_receiver: Remove redundant assignment to err Christoph Böhmwalder
                   ` (5 subsequent siblings)
  7 siblings, 0 replies; 9+ messages in thread
From: Christoph Böhmwalder @ 2022-04-06 19:07 UTC (permalink / raw)
  To: Jens Axboe
  Cc: drbd-dev, linux-kernel, Lars Ellenberg, Philipp Reisner,
	linux-block, Arnd Bergmann, Christoph Böhmwalder

From: Arnd Bergmann <arnd@arndb.de>

gcc -Wextra warns about mixing drbd_state_rv with drbd_ret_code
in a couple of places:

drivers/block/drbd/drbd_nl.c: In function 'drbd_adm_set_role':
drivers/block/drbd/drbd_nl.c:777:14: warning: comparison between 'enum drbd_state_rv' and 'enum drbd_ret_code' [-Wenum-compare]
  777 |  if (retcode != NO_ERROR)
      |              ^~
drivers/block/drbd/drbd_nl.c:784:12: warning: implicit conversion from 'enum drbd_ret_code' to 'enum drbd_state_rv' [-Wenum-conversion]
  784 |    retcode = ERR_MANDATORY_TAG;
      |            ^
drivers/block/drbd/drbd_nl.c: In function 'drbd_adm_attach':
drivers/block/drbd/drbd_nl.c:1965:10: warning: implicit conversion from 'enum drbd_state_rv' to 'enum drbd_ret_code' [-Wenum-conversion]
 1965 |  retcode = rv;  /* FIXME: Type mismatch. */
      |          ^
drivers/block/drbd/drbd_nl.c: In function 'drbd_adm_connect':
drivers/block/drbd/drbd_nl.c:2690:10: warning: implicit conversion from 'enum drbd_state_rv' to 'enum drbd_ret_code' [-Wenum-conversion]
 2690 |  retcode = conn_request_state(connection, NS(conn, C_UNCONNECTED), CS_VERBOSE);
      |          ^
drivers/block/drbd/drbd_nl.c: In function 'drbd_adm_disconnect':
drivers/block/drbd/drbd_nl.c:2803:11: warning: implicit conversion from 'enum drbd_state_rv' to 'enum drbd_ret_code' [-Wenum-conversion]
 2803 |   retcode = rv;  /* FIXME: Type mismatch. */
      |           ^

In each case, both are passed into drbd_adm_finish(), which just takes
a 32-bit integer and is happy with either, presumably intentionally.

Restructure the code to pass either type directly in there in most
cases, avoiding the warnings.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Christoph Böhmwalder <christoph.boehmwalder@linbit.com>
---
 drivers/block/drbd/drbd_nl.c | 24 +++++++++++++-----------
 1 file changed, 13 insertions(+), 11 deletions(-)

diff --git a/drivers/block/drbd/drbd_nl.c b/drivers/block/drbd/drbd_nl.c
index 02030c9c4d3b..074b884ec225 100644
--- a/drivers/block/drbd/drbd_nl.c
+++ b/drivers/block/drbd/drbd_nl.c
@@ -770,6 +770,7 @@ int drbd_adm_set_role(struct sk_buff *skb, struct genl_info *info)
 	struct set_role_parms parms;
 	int err;
 	enum drbd_ret_code retcode;
+	enum drbd_state_rv rv;
 
 	retcode = drbd_adm_prepare(&adm_ctx, skb, info, DRBD_ADM_NEED_MINOR);
 	if (!adm_ctx.reply_skb)
@@ -790,14 +791,14 @@ int drbd_adm_set_role(struct sk_buff *skb, struct genl_info *info)
 	mutex_lock(&adm_ctx.resource->adm_mutex);
 
 	if (info->genlhdr->cmd == DRBD_ADM_PRIMARY)
-		retcode = (enum drbd_ret_code)drbd_set_role(adm_ctx.device,
-						R_PRIMARY, parms.assume_uptodate);
+		rv = drbd_set_role(adm_ctx.device, R_PRIMARY, parms.assume_uptodate);
 	else
-		retcode = (enum drbd_ret_code)drbd_set_role(adm_ctx.device,
-						R_SECONDARY, 0);
+		rv = drbd_set_role(adm_ctx.device, R_SECONDARY, 0);
 
 	mutex_unlock(&adm_ctx.resource->adm_mutex);
 	genl_lock();
+	drbd_adm_finish(&adm_ctx, info, rv);
+	return 0;
 out:
 	drbd_adm_finish(&adm_ctx, info, retcode);
 	return 0;
@@ -2502,6 +2503,7 @@ int drbd_adm_connect(struct sk_buff *skb, struct genl_info *info)
 	struct drbd_resource *resource;
 	struct drbd_connection *connection;
 	enum drbd_ret_code retcode;
+	enum drbd_state_rv rv;
 	int i;
 	int err;
 
@@ -2621,12 +2623,11 @@ int drbd_adm_connect(struct sk_buff *skb, struct genl_info *info)
 	}
 	rcu_read_unlock();
 
-	retcode = (enum drbd_ret_code)conn_request_state(connection,
-					NS(conn, C_UNCONNECTED), CS_VERBOSE);
+	rv = conn_request_state(connection, NS(conn, C_UNCONNECTED), CS_VERBOSE);
 
 	conn_reconfig_done(connection);
 	mutex_unlock(&adm_ctx.resource->adm_mutex);
-	drbd_adm_finish(&adm_ctx, info, retcode);
+	drbd_adm_finish(&adm_ctx, info, rv);
 	return 0;
 
 fail:
@@ -2734,11 +2735,12 @@ int drbd_adm_disconnect(struct sk_buff *skb, struct genl_info *info)
 
 	mutex_lock(&adm_ctx.resource->adm_mutex);
 	rv = conn_try_disconnect(connection, parms.force_disconnect);
-	if (rv < SS_SUCCESS)
-		retcode = (enum drbd_ret_code)rv;
-	else
-		retcode = NO_ERROR;
 	mutex_unlock(&adm_ctx.resource->adm_mutex);
+	if (rv < SS_SUCCESS) {
+		drbd_adm_finish(&adm_ctx, info, rv);
+		return 0;
+	}
+	retcode = NO_ERROR;
  fail:
 	drbd_adm_finish(&adm_ctx, info, retcode);
 	return 0;
-- 
2.35.1


^ permalink raw reply related	[flat|nested] 9+ messages in thread

* [PATCH 3/7] block: drbd: drbd_receiver: Remove redundant assignment to err
  2022-04-06 19:07 [PATCH 0/7] DRBD updates for 5.19 Christoph Böhmwalder
  2022-04-06 19:07 ` [PATCH 1/7] drbd: fix duplicate array initializer Christoph Böhmwalder
  2022-04-06 19:07 ` [PATCH 2/7] drbd: address enum mismatch warnings Christoph Böhmwalder
@ 2022-04-06 19:07 ` Christoph Böhmwalder
  2022-04-06 19:07 ` [PATCH 4/7] drbd: Make use of PFN_UP helper macro Christoph Böhmwalder
                   ` (4 subsequent siblings)
  7 siblings, 0 replies; 9+ messages in thread
From: Christoph Böhmwalder @ 2022-04-06 19:07 UTC (permalink / raw)
  To: Jens Axboe
  Cc: drbd-dev, linux-kernel, Lars Ellenberg, Philipp Reisner,
	linux-block, Jiapeng Chong, Abaci Robot,
	Christoph Böhmwalder

From: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>

Variable err is set to '-EIO' but this value is never read as
it is overwritten or not used later on, hence it is a redundant
assignment and can be removed.

Clean up the following clang-analyzer warning:

drivers/block/drbd/drbd_receiver.c:3955:5: warning: Value stored to
'err' is never read [clang-analyzer-deadcode.DeadStores].

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Acked-by: Christoph Böhmwalder <christoph.boehmwalder@linbit.com>
---
 drivers/block/drbd/drbd_receiver.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/block/drbd/drbd_receiver.c b/drivers/block/drbd/drbd_receiver.c
index 08da922f81d1..911c26753556 100644
--- a/drivers/block/drbd/drbd_receiver.c
+++ b/drivers/block/drbd/drbd_receiver.c
@@ -3903,7 +3903,6 @@ static int receive_SyncParam(struct drbd_connection *connection, struct packet_i
 				drbd_err(device, "verify-alg of wrong size, "
 					"peer wants %u, accepting only up to %u byte\n",
 					data_size, SHARED_SECRET_MAX);
-				err = -EIO;
 				goto reconnect;
 			}
 
-- 
2.35.1


^ permalink raw reply related	[flat|nested] 9+ messages in thread

* [PATCH 4/7] drbd: Make use of PFN_UP helper macro
  2022-04-06 19:07 [PATCH 0/7] DRBD updates for 5.19 Christoph Böhmwalder
                   ` (2 preceding siblings ...)
  2022-04-06 19:07 ` [PATCH 3/7] block: drbd: drbd_receiver: Remove redundant assignment to err Christoph Böhmwalder
@ 2022-04-06 19:07 ` Christoph Böhmwalder
  2022-04-06 19:07 ` [PATCH 5/7] drbd: Replace "unsigned" with "unsigned int" Christoph Böhmwalder
                   ` (3 subsequent siblings)
  7 siblings, 0 replies; 9+ messages in thread
From: Christoph Böhmwalder @ 2022-04-06 19:07 UTC (permalink / raw)
  To: Jens Axboe
  Cc: drbd-dev, linux-kernel, Lars Ellenberg, Philipp Reisner,
	linux-block, Cai Huoqing, Christoph Böhmwalder

From: Cai Huoqing <caihuoqing@baidu.com>

it's a refactor to make use of PFN_UP helper macro

Signed-off-by: Cai Huoqing <caihuoqing@baidu.com>
Reviewed-by: Christoph Böhmwalder <christoph.boehmwalder@linbit.com>
---
 drivers/block/drbd/drbd_bitmap.c   | 2 +-
 drivers/block/drbd/drbd_receiver.c | 4 ++--
 drivers/block/drbd/drbd_worker.c   | 2 +-
 3 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/block/drbd/drbd_bitmap.c b/drivers/block/drbd/drbd_bitmap.c
index df25eecf80af..9e060e49b3f8 100644
--- a/drivers/block/drbd/drbd_bitmap.c
+++ b/drivers/block/drbd/drbd_bitmap.c
@@ -683,7 +683,7 @@ int drbd_bm_resize(struct drbd_device *device, sector_t capacity, int set_new_bi
 		}
 	}
 
-	want = ALIGN(words*sizeof(long), PAGE_SIZE) >> PAGE_SHIFT;
+	want = PFN_UP(words*sizeof(long));
 	have = b->bm_number_of_pages;
 	if (want == have) {
 		D_ASSERT(device, b->bm_pages != NULL);
diff --git a/drivers/block/drbd/drbd_receiver.c b/drivers/block/drbd/drbd_receiver.c
index 911c26753556..c6c1843452ba 100644
--- a/drivers/block/drbd/drbd_receiver.c
+++ b/drivers/block/drbd/drbd_receiver.c
@@ -364,7 +364,7 @@ drbd_alloc_peer_req(struct drbd_peer_device *peer_device, u64 id, sector_t secto
 	struct drbd_device *device = peer_device->device;
 	struct drbd_peer_request *peer_req;
 	struct page *page = NULL;
-	unsigned nr_pages = (payload_size + PAGE_SIZE -1) >> PAGE_SHIFT;
+	unsigned nr_pages = PFN_UP(payload_size);
 
 	if (drbd_insert_fault(device, DRBD_FAULT_AL_EE))
 		return NULL;
@@ -1631,7 +1631,7 @@ int drbd_submit_peer_request(struct drbd_device *device,
 	sector_t sector = peer_req->i.sector;
 	unsigned data_size = peer_req->i.size;
 	unsigned n_bios = 0;
-	unsigned nr_pages = (data_size + PAGE_SIZE -1) >> PAGE_SHIFT;
+	unsigned nr_pages = PFN_UP(data_size);
 
 	/* TRIM/DISCARD: for now, always use the helper function
 	 * blkdev_issue_zeroout(..., discard=true).
diff --git a/drivers/block/drbd/drbd_worker.c b/drivers/block/drbd/drbd_worker.c
index 0f9956f4e9c4..af3051dd8912 100644
--- a/drivers/block/drbd/drbd_worker.c
+++ b/drivers/block/drbd/drbd_worker.c
@@ -1030,7 +1030,7 @@ static void move_to_net_ee_or_free(struct drbd_device *device, struct drbd_peer_
 {
 	if (drbd_peer_req_has_active_page(peer_req)) {
 		/* This might happen if sendpage() has not finished */
-		int i = (peer_req->i.size + PAGE_SIZE -1) >> PAGE_SHIFT;
+		int i = PFN_UP(peer_req->i.size);
 		atomic_add(i, &device->pp_in_use_by_net);
 		atomic_sub(i, &device->pp_in_use);
 		spin_lock_irq(&device->resource->req_lock);
-- 
2.35.1


^ permalink raw reply related	[flat|nested] 9+ messages in thread

* [PATCH 5/7] drbd: Replace "unsigned" with "unsigned int"
  2022-04-06 19:07 [PATCH 0/7] DRBD updates for 5.19 Christoph Böhmwalder
                   ` (3 preceding siblings ...)
  2022-04-06 19:07 ` [PATCH 4/7] drbd: Make use of PFN_UP helper macro Christoph Böhmwalder
@ 2022-04-06 19:07 ` Christoph Böhmwalder
  2022-04-06 19:07 ` [PATCH 6/7] drdb: Switch to kvfree_rcu() API Christoph Böhmwalder
                   ` (2 subsequent siblings)
  7 siblings, 0 replies; 9+ messages in thread
From: Christoph Böhmwalder @ 2022-04-06 19:07 UTC (permalink / raw)
  To: Jens Axboe
  Cc: drbd-dev, linux-kernel, Lars Ellenberg, Philipp Reisner,
	linux-block, Cai Huoqing, Christoph Böhmwalder

From: Cai Huoqing <caihuoqing@baidu.com>

when run checkpath.pl for the first patch, found that
WARNING: Prefer 'unsigned int' to bare use of 'unsigned'.
so fix it. BTW

Signed-off-by: Cai Huoqing <caihuoqing@baidu.com>
Acked-by: Christoph Böhmwalder <christoph.boehmwalder@linbit.com>
---
 drivers/block/drbd/drbd_receiver.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/block/drbd/drbd_receiver.c b/drivers/block/drbd/drbd_receiver.c
index c6c1843452ba..0825766ce910 100644
--- a/drivers/block/drbd/drbd_receiver.c
+++ b/drivers/block/drbd/drbd_receiver.c
@@ -364,7 +364,7 @@ drbd_alloc_peer_req(struct drbd_peer_device *peer_device, u64 id, sector_t secto
 	struct drbd_device *device = peer_device->device;
 	struct drbd_peer_request *peer_req;
 	struct page *page = NULL;
-	unsigned nr_pages = PFN_UP(payload_size);
+	unsigned int nr_pages = PFN_UP(payload_size);
 
 	if (drbd_insert_fault(device, DRBD_FAULT_AL_EE))
 		return NULL;
@@ -1629,9 +1629,9 @@ int drbd_submit_peer_request(struct drbd_device *device,
 	struct bio *bio;
 	struct page *page = peer_req->pages;
 	sector_t sector = peer_req->i.sector;
-	unsigned data_size = peer_req->i.size;
-	unsigned n_bios = 0;
-	unsigned nr_pages = PFN_UP(data_size);
+	unsigned int data_size = peer_req->i.size;
+	unsigned int n_bios = 0;
+	unsigned int nr_pages = PFN_UP(data_size);
 
 	/* TRIM/DISCARD: for now, always use the helper function
 	 * blkdev_issue_zeroout(..., discard=true).
-- 
2.35.1


^ permalink raw reply related	[flat|nested] 9+ messages in thread

* [PATCH 6/7] drdb: Switch to kvfree_rcu() API
  2022-04-06 19:07 [PATCH 0/7] DRBD updates for 5.19 Christoph Böhmwalder
                   ` (4 preceding siblings ...)
  2022-04-06 19:07 ` [PATCH 5/7] drbd: Replace "unsigned" with "unsigned int" Christoph Böhmwalder
@ 2022-04-06 19:07 ` Christoph Böhmwalder
  2022-04-06 19:07 ` [PATCH 7/7] drbd: Return true/false (not 1/0) from bool functions Christoph Böhmwalder
  2022-04-06 22:37 ` [PATCH 0/7] DRBD updates for 5.19 Jens Axboe
  7 siblings, 0 replies; 9+ messages in thread
From: Christoph Böhmwalder @ 2022-04-06 19:07 UTC (permalink / raw)
  To: Jens Axboe
  Cc: drbd-dev, linux-kernel, Lars Ellenberg, Philipp Reisner,
	linux-block, Uladzislau Rezki (Sony),
	Christoph Böhmwalder

From: "Uladzislau Rezki (Sony)" <urezki@gmail.com>

Instead of invoking a synchronize_rcu() to free a pointer
after a grace period we can directly make use of new API
that does the same but in more efficient way.

TO: Jens Axboe <axboe@kernel.dk>
TO: Philipp Reisner <philipp.reisner@linbit.com>
TO: Jason Gunthorpe <jgg@nvidia.com>
TO: drbd-dev@lists.linbit.com
TO: linux-block@vger.kernel.org
Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
Reviewed-by: Christoph Böhmwalder <christoph.boehmwalder@linbit.com>
---
 drivers/block/drbd/drbd_nl.c       | 9 +++------
 drivers/block/drbd/drbd_receiver.c | 6 ++----
 drivers/block/drbd/drbd_state.c    | 3 +--
 3 files changed, 6 insertions(+), 12 deletions(-)

diff --git a/drivers/block/drbd/drbd_nl.c b/drivers/block/drbd/drbd_nl.c
index 074b884ec225..ad6e40864b37 100644
--- a/drivers/block/drbd/drbd_nl.c
+++ b/drivers/block/drbd/drbd_nl.c
@@ -1612,8 +1612,7 @@ int drbd_adm_disk_opts(struct sk_buff *skb, struct genl_info *info)
 			drbd_send_sync_param(peer_device);
 	}
 
-	synchronize_rcu();
-	kfree(old_disk_conf);
+	kvfree_rcu(old_disk_conf);
 	kfree(old_plan);
 	mod_timer(&device->request_timer, jiffies + HZ);
 	goto success;
@@ -2444,8 +2443,7 @@ int drbd_adm_net_opts(struct sk_buff *skb, struct genl_info *info)
 
 	mutex_unlock(&connection->resource->conf_update);
 	mutex_unlock(&connection->data.mutex);
-	synchronize_rcu();
-	kfree(old_net_conf);
+	kvfree_rcu(old_net_conf);
 
 	if (connection->cstate >= C_WF_REPORT_PARAMS) {
 		struct drbd_peer_device *peer_device;
@@ -2859,8 +2857,7 @@ int drbd_adm_resize(struct sk_buff *skb, struct genl_info *info)
 		new_disk_conf->disk_size = (sector_t)rs.resize_size;
 		rcu_assign_pointer(device->ldev->disk_conf, new_disk_conf);
 		mutex_unlock(&device->resource->conf_update);
-		synchronize_rcu();
-		kfree(old_disk_conf);
+		kvfree_rcu(old_disk_conf);
 		new_disk_conf = NULL;
 	}
 
diff --git a/drivers/block/drbd/drbd_receiver.c b/drivers/block/drbd/drbd_receiver.c
index 0825766ce910..5e10572a4d3e 100644
--- a/drivers/block/drbd/drbd_receiver.c
+++ b/drivers/block/drbd/drbd_receiver.c
@@ -3751,8 +3751,7 @@ static int receive_protocol(struct drbd_connection *connection, struct packet_in
 		drbd_info(connection, "peer data-integrity-alg: %s\n",
 			  integrity_alg[0] ? integrity_alg : "(none)");
 
-	synchronize_rcu();
-	kfree(old_net_conf);
+	kvfree_rcu(old_net_conf);
 	return 0;
 
 disconnect_rcu_unlock:
@@ -4120,8 +4119,7 @@ static int receive_sizes(struct drbd_connection *connection, struct packet_info
 
 			rcu_assign_pointer(device->ldev->disk_conf, new_disk_conf);
 			mutex_unlock(&connection->resource->conf_update);
-			synchronize_rcu();
-			kfree(old_disk_conf);
+			kvfree_rcu(old_disk_conf);
 
 			drbd_info(device, "Peer sets u_size to %lu sectors (old: %lu)\n",
 				 (unsigned long)p_usize, (unsigned long)my_usize);
diff --git a/drivers/block/drbd/drbd_state.c b/drivers/block/drbd/drbd_state.c
index b8a27818ab3f..826e496821c7 100644
--- a/drivers/block/drbd/drbd_state.c
+++ b/drivers/block/drbd/drbd_state.c
@@ -2071,8 +2071,7 @@ static int w_after_conn_state_ch(struct drbd_work *w, int unused)
 		conn_free_crypto(connection);
 		mutex_unlock(&connection->resource->conf_update);
 
-		synchronize_rcu();
-		kfree(old_conf);
+		kvfree_rcu(old_conf);
 	}
 
 	if (ns_max.susp_fen) {
-- 
2.35.1


^ permalink raw reply related	[flat|nested] 9+ messages in thread

* [PATCH 7/7] drbd: Return true/false (not 1/0) from bool functions
  2022-04-06 19:07 [PATCH 0/7] DRBD updates for 5.19 Christoph Böhmwalder
                   ` (5 preceding siblings ...)
  2022-04-06 19:07 ` [PATCH 6/7] drdb: Switch to kvfree_rcu() API Christoph Böhmwalder
@ 2022-04-06 19:07 ` Christoph Böhmwalder
  2022-04-06 22:37 ` [PATCH 0/7] DRBD updates for 5.19 Jens Axboe
  7 siblings, 0 replies; 9+ messages in thread
From: Christoph Böhmwalder @ 2022-04-06 19:07 UTC (permalink / raw)
  To: Jens Axboe
  Cc: drbd-dev, linux-kernel, Lars Ellenberg, Philipp Reisner,
	linux-block, Haowen Bai, Christoph Böhmwalder

From: Haowen Bai <baihaowen@meizu.com>

Return boolean values ("true" or "false") instead of 1 or 0 from bool
functions.  This fixes the following warnings from coccicheck:

./drivers/block/drbd/drbd_req.c:912:9-10: WARNING: return of 0/1 in
function 'remote_due_to_read_balancing' with return type bool

Signed-off-by: Haowen Bai <baihaowen@meizu.com>
Reviewed-by: Christoph Böhmwalder <christoph.boehmwalder@linbit.com>
---
 drivers/block/drbd/drbd_req.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/block/drbd/drbd_req.c b/drivers/block/drbd/drbd_req.c
index 75be0e16770a..e64bcfba30ef 100644
--- a/drivers/block/drbd/drbd_req.c
+++ b/drivers/block/drbd/drbd_req.c
@@ -922,7 +922,7 @@ static bool remote_due_to_read_balancing(struct drbd_device *device, sector_t se
 
 	switch (rbm) {
 	case RB_CONGESTED_REMOTE:
-		return 0;
+		return false;
 	case RB_LEAST_PENDING:
 		return atomic_read(&device->local_cnt) >
 			atomic_read(&device->ap_pending_cnt) + atomic_read(&device->rs_pending_cnt);
-- 
2.35.1


^ permalink raw reply related	[flat|nested] 9+ messages in thread

* Re: [PATCH 0/7] DRBD updates for 5.19
  2022-04-06 19:07 [PATCH 0/7] DRBD updates for 5.19 Christoph Böhmwalder
                   ` (6 preceding siblings ...)
  2022-04-06 19:07 ` [PATCH 7/7] drbd: Return true/false (not 1/0) from bool functions Christoph Böhmwalder
@ 2022-04-06 22:37 ` Jens Axboe
  7 siblings, 0 replies; 9+ messages in thread
From: Jens Axboe @ 2022-04-06 22:37 UTC (permalink / raw)
  To: christoph.boehmwalder
  Cc: linux-block, drbd-dev, lars.ellenberg, philipp.reisner, linux-kernel

On Wed, 6 Apr 2022 21:07:08 +0200, Christoph Böhmwalder wrote:
> Mostly cosmetic changes, bound for 5.19.
> 
> Arnd Bergmann (2):
>   drbd: fix duplicate array initializer
>   drbd: address enum mismatch warnings
> 
> Cai Huoqing (2):
>   drbd: Make use of PFN_UP helper macro
>   drbd: Replace "unsigned" with "unsigned int"
> 
> [...]

Applied, thanks!

[1/7] drbd: fix duplicate array initializer
      commit: adff355a6d6602d6be7be4c98e39d1d957a7e53f
[2/7] drbd: address enum mismatch warnings
      commit: a9cb5060fabb46187c8b00ac740bc30f045baa8e
[3/7] block: drbd: drbd_receiver: Remove redundant assignment to err
      commit: c8057a1ec541f972d0ca2ab14a77bd0f6a1919e3
[4/7] drbd: Make use of PFN_UP helper macro
      commit: 25dddd7771061c0d7176d396117244e19ce30858
[5/7] drbd: Replace "unsigned" with "unsigned int"
      commit: ad94e90806ac935c91dc6f048cec6c6ec4069cec
[6/7] drdb: Switch to kvfree_rcu() API
      commit: 40dad92d68aab52919d98524eb8aa87ed23596c8
[7/7] drbd: Return true/false (not 1/0) from bool functions
      commit: c0bf7a4c2313c46f2ba14b78a622a7e32bbbb2ac

Best regards,
-- 
Jens Axboe



^ permalink raw reply	[flat|nested] 9+ messages in thread

end of thread, other threads:[~2022-04-06 22:38 UTC | newest]

Thread overview: 9+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-04-06 19:07 [PATCH 0/7] DRBD updates for 5.19 Christoph Böhmwalder
2022-04-06 19:07 ` [PATCH 1/7] drbd: fix duplicate array initializer Christoph Böhmwalder
2022-04-06 19:07 ` [PATCH 2/7] drbd: address enum mismatch warnings Christoph Böhmwalder
2022-04-06 19:07 ` [PATCH 3/7] block: drbd: drbd_receiver: Remove redundant assignment to err Christoph Böhmwalder
2022-04-06 19:07 ` [PATCH 4/7] drbd: Make use of PFN_UP helper macro Christoph Böhmwalder
2022-04-06 19:07 ` [PATCH 5/7] drbd: Replace "unsigned" with "unsigned int" Christoph Böhmwalder
2022-04-06 19:07 ` [PATCH 6/7] drdb: Switch to kvfree_rcu() API Christoph Böhmwalder
2022-04-06 19:07 ` [PATCH 7/7] drbd: Return true/false (not 1/0) from bool functions Christoph Böhmwalder
2022-04-06 22:37 ` [PATCH 0/7] DRBD updates for 5.19 Jens Axboe

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