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SCSI fixes on 20151205

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This is quite a bumper crop of fixes: Three from Arnd correcting various build
 issues in some configurations, a lock recursion in qla2xxx.  Two potentially
 exploitable issues in hpsa and mvsas, a potential null deref in st, A revert
 of a bdi registration fix that turned out to cause even more problems, a set
 of fixes to allow people who only defined MPT2SAS to still work after the
 mpt2/mpt3sas merger and a couple of fixes for issues turned up by the hyper-v
 storvsc driver.
 
 Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "This is quite a bumper crop of fixes: three from Arnd correcting
  various build issues in some configurations, a lock recursion in
  qla2xxx.  Two potentially exploitable issues in hpsa and mvsas, a
  potential null deref in st, a revert of a bdi registration fix that
  turned out to cause even more problems, a set of fixes to allow people
  who only defined MPT2SAS to still work after the mpt2/mpt3sas merger
  and a couple of fixes for issues turned up by the hyper-v storvsc
  driver"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  mpt3sas: fix Kconfig dependency problem for mpt2sas back compatibility
  Revert "scsi: Fix a bdi reregistration race"
  mpt3sas: Add dummy Kconfig option for backwards compatibility
  Fix a memory leak in scsi_host_dev_release()
  block/sd: Fix device-imposed transfer length limits
  scsi_debug: fix prevent_allow+verify regressions
  MAINTAINERS: Add myself as co-maintainer of the SCSI subsystem.
  sd: Make discard granularity match logical block size when LBPRZ=1
  scsi: hpsa: select CONFIG_SCSI_SAS_ATTR
  scsi: advansys needs ISA dma api for ISA support
  scsi_sysfs: protect against double execution of __scsi_remove_device()
  st: fix potential null pointer dereference.
  scsi: report 'INQUIRY result too short' once per host
  advansys: fix big-endian builds
  qla2xxx: Fix rwlock recursion
  hpsa: logical vs bitwise AND typo
  mvsas: don't allow negative timeouts
  mpt3sas: Fix use sas_is_tlr_enabled API before enabling MPI2_SCSIIO_CONTROL_TLR_ON flag
This commit is contained in:
Linus Torvalds 2015-12-06 08:02:25 -08:00
commit 19190f5ea9
19 changed files with 129 additions and 70 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
MAINTAINERS
View File

@ -9427,8 +9427,10 @@ F: include/scsi/sg.h
SCSI SUBSYSTEM
M: "James E.J. Bottomley" <JBottomley@odin.com>
L: linux-scsi@vger.kernel.org
T: git git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi.git
M: "Martin K. Petersen" <martin.petersen@oracle.com>
T: git git://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git
L: linux-scsi@vger.kernel.org
S: Maintained
F: drivers/scsi/
F: include/scsi/

36
block/blk-settings.c
View File

@ -91,7 +91,8 @@ void blk_set_default_limits(struct queue_limits *lim)
lim->seg_boundary_mask = BLK_SEG_BOUNDARY_MASK;
lim->virt_boundary_mask = 0;
lim->max_segment_size = BLK_MAX_SEGMENT_SIZE;
lim->max_sectors = lim->max_hw_sectors = BLK_SAFE_MAX_SECTORS;
lim->max_sectors = lim->max_dev_sectors = lim->max_hw_sectors =
BLK_SAFE_MAX_SECTORS;
lim->chunk_sectors = 0;
lim->max_write_same_sectors = 0;
lim->max_discard_sectors = 0;
@ -127,6 +128,7 @@ void blk_set_stacking_limits(struct queue_limits *lim)
lim->max_hw_sectors = UINT_MAX;
lim->max_segment_size = UINT_MAX;
lim->max_sectors = UINT_MAX;
lim->max_dev_sectors = UINT_MAX;
lim->max_write_same_sectors = UINT_MAX;
}
EXPORT_SYMBOL(blk_set_stacking_limits);
@ -214,8 +216,8 @@ void blk_queue_bounce_limit(struct request_queue *q, u64 max_addr)
EXPORT_SYMBOL(blk_queue_bounce_limit);
/**
* blk_limits_max_hw_sectors - set hard and soft limit of max sectors for request
* @limits: the queue limits
* blk_queue_max_hw_sectors - set max sectors for a request for this queue
* @q: the request queue for the device
* @max_hw_sectors: max hardware sectors in the usual 512b unit
*
* Description:
@ -224,13 +226,19 @@ EXPORT_SYMBOL(blk_queue_bounce_limit);
* the device driver based upon the capabilities of the I/O
* controller.
*
* max_dev_sectors is a hard limit imposed by the storage device for
* READ/WRITE requests. It is set by the disk driver.
*
* max_sectors is a soft limit imposed by the block layer for
* filesystem type requests. This value can be overridden on a
* per-device basis in /sys/block/<device>/queue/max_sectors_kb.
* The soft limit can not exceed max_hw_sectors.
**/
void blk_limits_max_hw_sectors(struct queue_limits *limits, unsigned int max_hw_sectors)
void blk_queue_max_hw_sectors(struct request_queue *q, unsigned int max_hw_sectors)
{
struct queue_limits *limits = &q->limits;
unsigned int max_sectors;
if ((max_hw_sectors << 9) < PAGE_CACHE_SIZE) {
max_hw_sectors = 1 << (PAGE_CACHE_SHIFT - 9);
printk(KERN_INFO "%s: set to minimum %d\n",
@ -238,22 +246,9 @@ void blk_limits_max_hw_sectors(struct queue_limits *limits, unsigned int max_hw_
}
limits->max_hw_sectors = max_hw_sectors;
limits->max_sectors = min_t(unsigned int, max_hw_sectors,
BLK_DEF_MAX_SECTORS);
}
EXPORT_SYMBOL(blk_limits_max_hw_sectors);
/**
* blk_queue_max_hw_sectors - set max sectors for a request for this queue
* @q: the request queue for the device
* @max_hw_sectors: max hardware sectors in the usual 512b unit
*
* Description:
* See description for blk_limits_max_hw_sectors().
**/
void blk_queue_max_hw_sectors(struct request_queue *q, unsigned int max_hw_sectors)
{
blk_limits_max_hw_sectors(&q->limits, max_hw_sectors);
max_sectors = min_not_zero(max_hw_sectors, limits->max_dev_sectors);
max_sectors = min_t(unsigned int, max_sectors, BLK_DEF_MAX_SECTORS);
limits->max_sectors = max_sectors;
}
EXPORT_SYMBOL(blk_queue_max_hw_sectors);
@ -527,6 +522,7 @@ int blk_stack_limits(struct queue_limits *t, struct queue_limits *b,
t->max_sectors = min_not_zero(t->max_sectors, b->max_sectors);
t->max_hw_sectors = min_not_zero(t->max_hw_sectors, b->max_hw_sectors);
t->max_dev_sectors = min_not_zero(t->max_dev_sectors, b->max_dev_sectors);
t->max_write_same_sectors = min(t->max_write_same_sectors,
b->max_write_same_sectors);
t->bounce_pfn = min_not_zero(t->bounce_pfn, b->bounce_pfn);

3
block/blk-sysfs.c
View File

@ -205,6 +205,9 @@ queue_max_sectors_store(struct request_queue *q, const char *page, size_t count)
if (ret < 0)
return ret;
max_hw_sectors_kb = min_not_zero(max_hw_sectors_kb, (unsigned long)
q->limits.max_dev_sectors >> 1);
if (max_sectors_kb > max_hw_sectors_kb || max_sectors_kb < page_kb)
return -EINVAL;

2
drivers/scsi/Kconfig
View File

@ -364,6 +364,7 @@ config SCSI_HPSA
tristate "HP Smart Array SCSI driver"
depends on PCI && SCSI
select CHECK_SIGNATURE
select SCSI_SAS_ATTRS
help
This driver supports HP Smart Array Controllers (circa 2009).
It is a SCSI alternative to the cciss driver, which is a block
@ -499,6 +500,7 @@ config SCSI_ADVANSYS
tristate "AdvanSys SCSI support"
depends on SCSI
depends on ISA || EISA || PCI
depends on ISA_DMA_API || !ISA
help
This is a driver for all SCSI host adapters manufactured by
AdvanSys. It is documented in the kernel source in

2
drivers/scsi/advansys.c
View File

@ -7803,7 +7803,7 @@ adv_build_req(struct asc_board *boardp, struct scsi_cmnd *scp,
return ASC_BUSY;
}
scsiqp->sense_addr = cpu_to_le32(sense_addr);
scsiqp->sense_len = cpu_to_le32(SCSI_SENSE_BUFFERSIZE);
scsiqp->sense_len = SCSI_SENSE_BUFFERSIZE;
/* Build ADV_SCSI_REQ_Q */

11
drivers/scsi/hosts.c
View File

@ -333,6 +333,17 @@ static void scsi_host_dev_release(struct device *dev)
kfree(queuedata);
}
if (shost->shost_state == SHOST_CREATED) {
/*
* Free the shost_dev device name here if scsi_host_alloc()
* and scsi_host_put() have been called but neither
* scsi_host_add() nor scsi_host_remove() has been called.
* This avoids that the memory allocated for the shost_dev
* name is leaked.
*/
kfree(dev_name(&shost->shost_dev));
}
scsi_destroy_command_freelist(shost);
if (shost_use_blk_mq(shost)) {
if (shost->tag_set.tags)

2
drivers/scsi/hpsa.c
View File

@ -8671,7 +8671,7 @@ static void hpsa_disable_rld_caching(struct ctlr_info *h)
if ((rc != 0) || (c->err_info->CommandStatus != 0))
goto errout;
if (*options && HPSA_DIAG_OPTS_DISABLE_RLD_CACHING)
if (*options & HPSA_DIAG_OPTS_DISABLE_RLD_CACHING)
goto out;
errout:

9
drivers/scsi/mpt3sas/Kconfig
View File

@ -71,3 +71,12 @@ config SCSI_MPT3SAS_MAX_SGE
MAX_PHYS_SEGMENTS in most kernels. However in SuSE kernels this
can be 256. However, it may decreased down to 16. Decreasing this
parameter will reduce memory requirements on a per controller instance.
config SCSI_MPT2SAS
tristate "Legacy MPT2SAS config option"
default n
select SCSI_MPT3SAS
depends on PCI && SCSI
---help---
Dummy config option for backwards compatiblity: configure the MPT3SAS
driver instead.

3
drivers/scsi/mpt3sas/mpt3sas_scsih.c
View File

@ -3905,8 +3905,7 @@ scsih_qcmd(struct Scsi_Host *shost, struct scsi_cmnd *scmd)
* We do not expose raid functionality to upper layer for warpdrive.
*/
if (!ioc->is_warpdrive && !scsih_is_raid(&scmd->device->sdev_gendev)
&& (sas_device_priv_data->flags & MPT_DEVICE_TLR_ON) &&
scmd->cmd_len != 32)
&& sas_is_tlr_enabled(scmd->device) && scmd->cmd_len != 32)
mpi_control |= MPI2_SCSIIO_CONTROL_TLR_ON;
smid = mpt3sas_base_get_smid_scsiio(ioc, ioc->scsi_io_cb_idx, scmd);

4
drivers/scsi/mvsas/mv_init.c
View File

@ -758,7 +758,7 @@ mvs_store_interrupt_coalescing(struct device *cdev,
struct device_attribute *attr,
const char *buffer, size_t size)
{
int val = 0;
unsigned int val = 0;
struct mvs_info *mvi = NULL;
struct Scsi_Host *shost = class_to_shost(cdev);
struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
@ -766,7 +766,7 @@ mvs_store_interrupt_coalescing(struct device *cdev,
if (buffer == NULL)
return size;
if (sscanf(buffer, "%d", &val) != 1)
if (sscanf(buffer, "%u", &val) != 1)
return -EINVAL;
if (val >= 0x10000) {

3
drivers/scsi/qla2xxx/qla_nx.c
View File

@ -433,7 +433,7 @@ qla82xx_pci_get_crb_addr_2M(struct qla_hw_data *ha, ulong off_in,
if (off_in < QLA82XX_PCI_CRBSPACE)
return -1;
*off_out = (void __iomem *)(off_in - QLA82XX_PCI_CRBSPACE);
off_in -= QLA82XX_PCI_CRBSPACE;
/* Try direct map */
m = &crb_128M_2M_map[CRB_BLK(off_in)].sub_block[CRB_SUBBLK(off_in)];
@ -443,6 +443,7 @@ qla82xx_pci_get_crb_addr_2M(struct qla_hw_data *ha, ulong off_in,
return 0;
}
/* Not in direct map, use crb window */
*off_out = (void __iomem *)off_in;
return 1;
}

9
drivers/scsi/scsi_debug.c
View File

@ -465,8 +465,9 @@ static const struct opcode_info_t opcode_info_arr[SDEB_I_LAST_ELEMENT + 1] = {
0} },
{0, 0, 0, F_INV_OP | FF_RESPOND, NULL, NULL, /* MAINT OUT */
{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} },
{0, 0, 0, F_INV_OP | FF_RESPOND, NULL, NULL, /* VERIFY */
{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} },
{0, 0x2f, 0, F_D_OUT_MAYBE | FF_DIRECT_IO, NULL, NULL, /* VERIFY(10) */
{10, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc7,
0, 0, 0, 0, 0, 0} },
{1, 0x7f, 0x9, F_SA_HIGH | F_D_IN | FF_DIRECT_IO, resp_read_dt0,
vl_iarr, {32, 0xc7, 0, 0, 0, 0, 0x1f, 0x18, 0x0, 0x9, 0xfe, 0,
0xff, 0xff, 0xff, 0xff} },/* VARIABLE LENGTH, READ(32) */
@ -477,8 +478,8 @@ static const struct opcode_info_t opcode_info_arr[SDEB_I_LAST_ELEMENT + 1] = {
{10, 0x13, 0xff, 0xff, 0, 0, 0, 0xff, 0xff, 0xc7, 0, 0, 0, 0, 0,
0} },
/* 20 */
{0, 0, 0, F_INV_OP | FF_RESPOND, NULL, NULL, /* ALLOW REMOVAL */
{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} },
{0, 0x1e, 0, 0, NULL, NULL, /* ALLOW REMOVAL */
{6, 0, 0, 0, 0x3, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} },
{0, 0x1, 0, 0, resp_start_stop, NULL, /* REWIND ?? */
{6, 0x1, 0, 0, 0, 0xc7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} },
{0, 0, 0, F_INV_OP | FF_RESPOND, NULL, NULL, /* ATA_PT */

9
drivers/scsi/scsi_scan.c
View File

@ -701,9 +701,12 @@ static int scsi_probe_lun(struct scsi_device *sdev, unsigned char *inq_result,
* strings.
*/
if (sdev->inquiry_len < 36) {
sdev_printk(KERN_INFO, sdev,
"scsi scan: INQUIRY result too short (%d),"
" using 36\n", sdev->inquiry_len);
if (!sdev->host->short_inquiry) {
shost_printk(KERN_INFO, sdev->host,
"scsi scan: INQUIRY result too short (%d),"
" using 36\n", sdev->inquiry_len);
sdev->host->short_inquiry = 1;
}
sdev->inquiry_len = 36;
}

22
drivers/scsi/scsi_sysfs.c
View File

@ -1102,6 +1102,14 @@ void __scsi_remove_device(struct scsi_device *sdev)
{
struct device *dev = &sdev->sdev_gendev;
/*
* This cleanup path is not reentrant and while it is impossible
* to get a new reference with scsi_device_get() someone can still
* hold a previously acquired one.
*/
if (sdev->sdev_state == SDEV_DEL)
return;
if (sdev->is_visible) {
if (scsi_device_set_state(sdev, SDEV_CANCEL) != 0)
return;
@ -1110,7 +1118,9 @@ void __scsi_remove_device(struct scsi_device *sdev)
device_unregister(&sdev->sdev_dev);
transport_remove_device(dev);
scsi_dh_remove_device(sdev);
}
device_del(dev);
} else
put_device(&sdev->sdev_dev);
/*
* Stop accepting new requests and wait until all queuecommand() and
@ -1121,16 +1131,6 @@ void __scsi_remove_device(struct scsi_device *sdev)
blk_cleanup_queue(sdev->request_queue);
cancel_work_sync(&sdev->requeue_work);
/*
* Remove the device after blk_cleanup_queue() has been called such
* a possible bdi_register() call with the same name occurs after
* blk_cleanup_queue() has called bdi_destroy().
*/
if (sdev->is_visible)
device_del(dev);
else
put_device(&sdev->sdev_dev);
if (sdev->host->hostt->slave_destroy)
sdev->host->hostt->slave_destroy(sdev);
transport_destroy_device(dev);

69
drivers/scsi/sd.c
View File

@ -638,11 +638,24 @@ static void sd_config_discard(struct scsi_disk *sdkp, unsigned int mode)
unsigned int max_blocks = 0;
q->limits.discard_zeroes_data = 0;
q->limits.discard_alignment = sdkp->unmap_alignment *
logical_block_size;
q->limits.discard_granularity =
max(sdkp->physical_block_size,
sdkp->unmap_granularity * logical_block_size);
/*
* When LBPRZ is reported, discard alignment and granularity
* must be fixed to the logical block size. Otherwise the block
* layer will drop misaligned portions of the request which can
* lead to data corruption. If LBPRZ is not set, we honor the
* device preference.
*/
if (sdkp->lbprz) {
q->limits.discard_alignment = 0;
q->limits.discard_granularity = 1;
} else {
q->limits.discard_alignment = sdkp->unmap_alignment *
logical_block_size;
q->limits.discard_granularity =
max(sdkp->physical_block_size,
sdkp->unmap_granularity * logical_block_size);
}
sdkp->provisioning_mode = mode;
@ -2321,11 +2334,8 @@ sd_read_capacity(struct scsi_disk *sdkp, unsigned char *buffer)
}
}
if (sdkp->capacity > 0xffffffff) {
if (sdkp->capacity > 0xffffffff)
sdp->use_16_for_rw = 1;
sdkp->max_xfer_blocks = SD_MAX_XFER_BLOCKS;
} else
sdkp->max_xfer_blocks = SD_DEF_XFER_BLOCKS;
/* Rescale capacity to 512-byte units */
if (sector_size == 4096)
@ -2642,7 +2652,6 @@ static void sd_read_block_limits(struct scsi_disk *sdkp)
{
unsigned int sector_sz = sdkp->device->sector_size;
const int vpd_len = 64;
u32 max_xfer_length;
unsigned char *buffer = kmalloc(vpd_len, GFP_KERNEL);
if (!buffer ||
@ -2650,14 +2659,11 @@ static void sd_read_block_limits(struct scsi_disk *sdkp)
scsi_get_vpd_page(sdkp->device, 0xb0, buffer, vpd_len))
goto out;
max_xfer_length = get_unaligned_be32(&buffer[8]);
if (max_xfer_length)
sdkp->max_xfer_blocks = max_xfer_length;
blk_queue_io_min(sdkp->disk->queue,
get_unaligned_be16(&buffer[6]) * sector_sz);
blk_queue_io_opt(sdkp->disk->queue,
get_unaligned_be32(&buffer[12]) * sector_sz);
sdkp->max_xfer_blocks = get_unaligned_be32(&buffer[8]);
sdkp->opt_xfer_blocks = get_unaligned_be32(&buffer[12]);
if (buffer[3] == 0x3c) {
unsigned int lba_count, desc_count;
@ -2806,6 +2812,11 @@ static int sd_try_extended_inquiry(struct scsi_device *sdp)
return 0;
}
static inline u32 logical_to_sectors(struct scsi_device *sdev, u32 blocks)
{
return blocks << (ilog2(sdev->sector_size) - 9);
}
/**
* sd_revalidate_disk - called the first time a new disk is seen,
* performs disk spin up, read_capacity, etc.
@ -2815,8 +2826,9 @@ static int sd_revalidate_disk(struct gendisk *disk)
{
struct scsi_disk *sdkp = scsi_disk(disk);
struct scsi_device *sdp = sdkp->device;
struct request_queue *q = sdkp->disk->queue;
unsigned char *buffer;
unsigned int max_xfer;
unsigned int dev_max, rw_max;
SCSI_LOG_HLQUEUE(3, sd_printk(KERN_INFO, sdkp,
"sd_revalidate_disk\n"));
@ -2864,11 +2876,26 @@ static int sd_revalidate_disk(struct gendisk *disk)
*/
sd_set_flush_flag(sdkp);
max_xfer = sdkp->max_xfer_blocks;
max_xfer <<= ilog2(sdp->sector_size) - 9;
/* Initial block count limit based on CDB TRANSFER LENGTH field size. */
dev_max = sdp->use_16_for_rw ? SD_MAX_XFER_BLOCKS : SD_DEF_XFER_BLOCKS;
sdkp->disk->queue->limits.max_sectors =
min_not_zero(queue_max_hw_sectors(sdkp->disk->queue), max_xfer);
/* Some devices report a maximum block count for READ/WRITE requests. */
dev_max = min_not_zero(dev_max, sdkp->max_xfer_blocks);
q->limits.max_dev_sectors = logical_to_sectors(sdp, dev_max);
/*
* Use the device's preferred I/O size for reads and writes
* unless the reported value is unreasonably large (or garbage).
*/
if (sdkp->opt_xfer_blocks && sdkp->opt_xfer_blocks <= dev_max &&
sdkp->opt_xfer_blocks <= SD_DEF_XFER_BLOCKS)
rw_max = q->limits.io_opt =
logical_to_sectors(sdp, sdkp->opt_xfer_blocks);
else
rw_max = BLK_DEF_MAX_SECTORS;
/* Combine with controller limits */
q->limits.max_sectors = min(rw_max, queue_max_hw_sectors(q));
set_capacity(disk, sdkp->capacity);
sd_config_write_same(sdkp);

1
drivers/scsi/sd.h
View File

@ -67,6 +67,7 @@ struct scsi_disk {
atomic_t openers;
sector_t capacity; /* size in 512-byte sectors */
u32 max_xfer_blocks;
u32 opt_xfer_blocks;
u32 max_ws_blocks;
u32 max_unmap_blocks;
u32 unmap_granularity;

5
drivers/scsi/st.c
View File

@ -4083,6 +4083,7 @@ static int create_one_cdev(struct scsi_tape *tape, int mode, int rew)
}
cdev->owner = THIS_MODULE;
cdev->ops = &st_fops;
STm->cdevs[rew] = cdev;
error = cdev_add(cdev, cdev_devno, 1);
if (error) {
@ -4091,7 +4092,6 @@ static int create_one_cdev(struct scsi_tape *tape, int mode, int rew)
pr_err("st%d: Device not attached.\n", dev_num);
goto out_free;
}
STm->cdevs[rew] = cdev;
i = mode << (4 - ST_NBR_MODE_BITS);
snprintf(name, 10, "%s%s%s", rew ? "n" : "",
@ -4110,8 +4110,9 @@ static int create_one_cdev(struct scsi_tape *tape, int mode, int rew)
return 0;
out_free:
cdev_del(STm->cdevs[rew]);
STm->cdevs[rew] = NULL;
out:
STm->cdevs[rew] = NULL;
STm->devs[rew] = NULL;
return error;
}

2
include/linux/blkdev.h
View File

@ -254,6 +254,7 @@ struct queue_limits {
unsigned long virt_boundary_mask;
unsigned int max_hw_sectors;
unsigned int max_dev_sectors;
unsigned int chunk_sectors;
unsigned int max_sectors;
unsigned int max_segment_size;
@ -959,7 +960,6 @@ extern struct request_queue *blk_init_allocated_queue(struct request_queue *,
extern void blk_cleanup_queue(struct request_queue *);
extern void blk_queue_make_request(struct request_queue *, make_request_fn *);
extern void blk_queue_bounce_limit(struct request_queue *, u64);
extern void blk_limits_max_hw_sectors(struct queue_limits *, unsigned int);
extern void blk_queue_max_hw_sectors(struct request_queue *, unsigned int);
extern void blk_queue_chunk_sectors(struct request_queue *, unsigned int);
extern void blk_queue_max_segments(struct request_queue *, unsigned short);

3
include/scsi/scsi_host.h
View File

@ -668,6 +668,9 @@ struct Scsi_Host {
unsigned use_blk_mq:1;
unsigned use_cmd_list:1;
/* Host responded with short (<36 bytes) INQUIRY result */
unsigned short_inquiry:1;
/*
* Optional work queue to be utilized by the transport
*/