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From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Tyrel Datwyler <tyreld@linux.ibm.com>,
	"Martin K . Petersen" <martin.petersen@oracle.com>,
	Sasha Levin <sashal@kernel.org>,
	mikecyr@linux.ibm.com, jejb@linux.ibm.com,
	linux-scsi@vger.kernel.org, target-devel@vger.kernel.org
Subject: [PATCH AUTOSEL 4.19 05/12] scsi: ibmvscsis: Increase INITIAL_SRP_LIMIT to 1024
Date: Mon, 11 Apr 2022 20:51:38 -0400	[thread overview]
Message-ID: <20220412005148.351391-5-sashal@kernel.org> (raw)
In-Reply-To: <20220412005148.351391-1-sashal@kernel.org>

From: Tyrel Datwyler <tyreld@linux.ibm.com>

[ Upstream commit 0bade8e53279157c7cc9dd95d573b7e82223d78a ]

The adapter request_limit is hardcoded to be INITIAL_SRP_LIMIT which is
currently an arbitrary value of 800. Increase this value to 1024 which
better matches the characteristics of the typical IBMi Initiator that
supports 32 LUNs and a queue depth of 32.

This change also has the secondary benefit of being a power of two as
required by the kfifo API. Since, Commit ab9bb6318b09 ("Partially revert
"kfifo: fix kfifo_alloc() and kfifo_init()"") the size of IU pool for each
target has been rounded down to 512 when attempting to kfifo_init() those
pools with the current request_limit size of 800.

Link: https://lore.kernel.org/r/20220322194443.678433-1-tyreld@linux.ibm.com
Signed-off-by: Tyrel Datwyler <tyreld@linux.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c b/drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c
index f42a619198c4..79bc6c3bfa6e 100644
--- a/drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c
+++ b/drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c
@@ -44,7 +44,7 @@
 
 #define IBMVSCSIS_VERSION	"v0.2"
 
-#define	INITIAL_SRP_LIMIT	800
+#define	INITIAL_SRP_LIMIT	1024
 #define	DEFAULT_MAX_SECTORS	256
 #define MAX_TXU			1024 * 1024
 
-- 
2.35.1


  parent reply	other threads:[~2022-04-12  1:08 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-04-12  0:51 [PATCH AUTOSEL 4.19 01/12] drm/amd: Add USBC connector ID Sasha Levin
2022-04-12  0:51 ` [PATCH AUTOSEL 4.19 02/12] drm/amdkfd: Check for potential null return of kmalloc_array() Sasha Levin
2022-04-12  0:51 ` [PATCH AUTOSEL 4.19 03/12] Drivers: hv: vmbus: Prevent load re-ordering when reading ring buffer Sasha Levin
2022-04-12  0:51 ` [PATCH AUTOSEL 4.19 04/12] scsi: target: tcmu: Fix possible page UAF Sasha Levin
2022-04-12  0:51 ` Sasha Levin [this message]
2022-04-12  0:51 ` [PATCH AUTOSEL 4.19 06/12] net: micrel: fix KS8851_MLL Kconfig Sasha Levin
2022-04-12  0:51 ` [PATCH AUTOSEL 4.19 07/12] ata: libata-core: Disable READ LOG DMA EXT for Samsung 840 EVOs Sasha Levin
2022-04-12  0:51 ` [PATCH AUTOSEL 4.19 08/12] gpu: ipu-v3: Fix dev_dbg frequency output Sasha Levin
2022-04-12  0:51 ` [PATCH AUTOSEL 4.19 09/12] arm64: alternatives: mark patch_alternative() as `noinstr` Sasha Levin
2022-04-12  0:51 ` [PATCH AUTOSEL 4.19 10/12] drm/amd/display: Fix allocate_mst_payload assert on resume Sasha Levin
2022-04-12  0:51 ` [PATCH AUTOSEL 4.19 11/12] scsi: mvsas: Add PCI ID of RocketRaid 2640 Sasha Levin
2022-04-12  0:51 ` [PATCH AUTOSEL 4.19 12/12] drivers: net: slip: fix NPD bug in sl_tx_timeout() Sasha Levin

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