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kernel
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linux
tcm_loop: bump max_sectors
There is not reason to artifically limit max_sectors in tcm_loop, set
it to UINT_MAX to allow stressing the large I/O handling in the target
core using the loopback driver. Also remove various superflous defines
hiding the values set in the host template.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
authored by
Christoph Hellwig
and committed by
Nicholas Bellinger
2e88efd3
0877eafd
+5
-14
+4
-4
drivers/target/loopback/tcm_loop.c
+4
-4
drivers/target/loopback/tcm_loop.c
···
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.queuecommand = tcm_loop_queuecommand,
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.change_queue_depth = tcm_loop_change_queue_depth,
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.eh_device_reset_handler = tcm_loop_device_reset,
419
-
.can_queue = TL_SCSI_CAN_QUEUE,
419
+
.can_queue = 1024,
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.this_id = -1,
421
-
.sg_tablesize = TL_SCSI_SG_TABLESIZE,
422
-
.cmd_per_lun = TL_SCSI_CMD_PER_LUN,
423
-
.max_sectors = TL_SCSI_MAX_SECTORS,
421
+
.sg_tablesize = 256,
422
+
.cmd_per_lun = 1024,
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+
.max_sectors = 0xFFFF,
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.use_clustering = DISABLE_CLUSTERING,
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.slave_alloc = tcm_loop_slave_alloc,
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.slave_configure = tcm_loop_slave_configure,
+1
-10
drivers/target/loopback/tcm_loop.h
+1
-10
drivers/target/loopback/tcm_loop.h
···
1
1
#define TCM_LOOP_VERSION "v2.1-rc1"
2
2
#define TL_WWN_ADDR_LEN 256
3
3
#define TL_TPGS_PER_HBA 32
4
-
/*
5
-
* Defaults for struct scsi_host_template tcm_loop_driver_template
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-
*
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-
* We use large can_queue and cmd_per_lun here and let TCM enforce
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-
* the underlying se_device_t->queue_depth.
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-
*/
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-
#define TL_SCSI_CAN_QUEUE 1024
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-
#define TL_SCSI_CMD_PER_LUN 1024
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-
#define TL_SCSI_MAX_SECTORS 1024
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-
#define TL_SCSI_SG_TABLESIZE 256
4
+
14
5
/*
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6
* Used in tcm_loop_driver_probe() for struct Scsi_Host->max_cmd_len
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7
*/