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| author | Nicholas Bellinger <nab@linux-iscsi.org> | 2011-07-17 02:57:58 -0700 |
|---|---|---|
| committer | Nicholas Bellinger <nab@linux-iscsi.org> | 2011-07-22 09:37:49 +0000 |
| commit | 5de619a31d9cb051d1f818e661af4e54def82316 (patch) | |
| tree | bbdf282c42fe3818607fff4f3a4f7d1b74ee064e /drivers/target/target_core_device.c | |
| parent | 1d20bb6147954d4fbd337a3d1b40c7eeae254cd7 (diff) | |
| download | linux-5de619a31d9cb051d1f818e661af4e54def82316.tar.gz linux-5de619a31d9cb051d1f818e661af4e54def82316.tar.xz linux-5de619a31d9cb051d1f818e661af4e54def82316.zip | |
target: Update QUEUE ALGORITHM MODIFIER control page default
This patch adds the default 'Unrestricted reordering allowed' for SCSI
control mode page QUEUE ALGORITHM MODIFIER on a per se_device basis in
target_modesense_control() following spc4r23. This includes a new
emuluate_rest_reord configfs attribute that currently (only) accepts
zero to signal 'Unrestricted reordering allowed' in control mode page
usage by the backend target device.
Reported-by: Roland Dreier <roland@purestorage.com>
Signed-off-by: Nicholas Bellinger <nab@risingtidesystems.com>
Diffstat (limited to 'drivers/target/target_core_device.c')
| -rw-r--r-- | drivers/target/target_core_device.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/drivers/target/target_core_device.c b/drivers/target/target_core_device.c index 81860ddc7cc4..b38b6c993e65 100644 --- a/drivers/target/target_core_device.c +++ b/drivers/target/target_core_device.c @@ -857,6 +857,7 @@ void se_dev_set_default_attribs( dev->se_sub_dev->se_dev_attrib.emulate_alua = DA_EMULATE_ALUA; dev->se_sub_dev->se_dev_attrib.enforce_pr_isids = DA_ENFORCE_PR_ISIDS; dev->se_sub_dev->se_dev_attrib.is_nonrot = DA_IS_NONROT; + dev->se_sub_dev->se_dev_attrib.emulate_rest_reord = DA_EMULATE_REST_REORD; /* * The TPU=1 and TPWS=1 settings will be set in TCM/IBLOCK * iblock_create_virtdevice() from struct queue_limits values @@ -1128,11 +1129,23 @@ int se_dev_set_is_nonrot(struct se_device *dev, int flag) return -EINVAL; } dev->se_sub_dev->se_dev_attrib.is_nonrot = flag; - printk(KERN_INFO "dev[%p]: SE Device is_nonrot bit: %d\n", + pr_debug("dev[%p]: SE Device is_nonrot bit: %d\n", dev, flag); return 0; } +int se_dev_set_emulate_rest_reord(struct se_device *dev, int flag) +{ + if (flag != 0) { + printk(KERN_ERR "dev[%p]: SE Device emulatation of restricted" + " reordering not implemented\n", dev); + return -ENOSYS; + } + dev->se_sub_dev->se_dev_attrib.emulate_rest_reord = flag; + pr_debug("dev[%p]: SE Device emulate_rest_reord: %d\n", dev, flag); + return 0; +} + /* * Note, this can only be called on unexported SE Device Object. */ |