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authorLinus Torvalds <torvalds@linux-foundation.org>2020-03-30 21:20:13 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2020-03-30 21:20:13 +0300
commit10f36b1e80a9f7afdaefe6f0b06dcdf89715eed7 (patch)
treeb47a3af19ab20a7cd6c1578db4afba1a85a8ec5b /drivers/scsi
parent3a0eb192c01f43dca12628d8b5866d5b8ffb35f5 (diff)
parent654a3667df364f778b9b5bcdfb32e545aceb6a51 (diff)
downloadlinux-10f36b1e80a9f7afdaefe6f0b06dcdf89715eed7.tar.xz
Merge tag 'for-5.7/block-2020-03-29' of git://git.kernel.dk/linux-block
Pull block updates from Jens Axboe: - Online capacity resizing (Balbir) - Number of hardware queue change fixes (Bart) - null_blk fault injection addition (Bart) - Cleanup of queue allocation, unifying the node/no-node API (Christoph) - Cleanup of genhd, moving code to where it makes sense (Christoph) - Cleanup of the partition handling code (Christoph) - disk stat fixes/improvements (Konstantin) - BFQ improvements (Paolo) - Various fixes and improvements * tag 'for-5.7/block-2020-03-29' of git://git.kernel.dk/linux-block: (72 commits) block: return NULL in blk_alloc_queue() on error block: move bio_map_* to blk-map.c Revert "blkdev: check for valid request queue before issuing flush" block: simplify queue allocation bcache: pass the make_request methods to blk_queue_make_request null_blk: use blk_mq_init_queue_data block: add a blk_mq_init_queue_data helper block: move the ->devnode callback to struct block_device_operations block: move the part_stat* helpers from genhd.h to a new header block: move block layer internals out of include/linux/genhd.h block: move guard_bio_eod to bio.c block: unexport get_gendisk block: unexport disk_map_sector_rcu block: unexport disk_get_part block: mark part_in_flight and part_in_flight_rw static block: mark block_depr static block: factor out requeue handling from dispatch code block/diskstats: replace time_in_queue with sum of request times block/diskstats: accumulate all per-cpu counters in one pass block/diskstats: more accurate approximation of io_ticks for slow disks ...
Diffstat (limited to 'drivers/scsi')
-rw-r--r--drivers/scsi/BusLogic.c8
-rw-r--r--drivers/scsi/aacraid/linit.c7
-rw-r--r--drivers/scsi/aic7xxx/aic79xx_osm.c13
-rw-r--r--drivers/scsi/aic7xxx/aic7xxx_osm.c13
-rw-r--r--drivers/scsi/arcmsr/arcmsr_hba.c13
-rw-r--r--drivers/scsi/megaraid.c13
-rw-r--r--drivers/scsi/scsi_debug.c5
-rw-r--r--drivers/scsi/scsicam.c186
-rw-r--r--drivers/scsi/sd.c3
9 files changed, 118 insertions, 143 deletions
diff --git a/drivers/scsi/BusLogic.c b/drivers/scsi/BusLogic.c
index 3170b295a5da..186259417449 100644
--- a/drivers/scsi/BusLogic.c
+++ b/drivers/scsi/BusLogic.c
@@ -36,6 +36,7 @@
#include <linux/jiffies.h>
#include <linux/dma-mapping.h>
#include <linux/slab.h>
+#include <linux/msdos_partition.h>
#include <scsi/scsicam.h>
#include <asm/dma.h>
@@ -3410,9 +3411,10 @@ static int blogic_diskparam(struct scsi_device *sdev, struct block_device *dev,
a partition table entry whose end_head matches one of the
standard BusLogic geometry translations (64/32, 128/32, or 255/63).
*/
- if (*(unsigned short *) (buf + 64) == 0xAA55) {
- struct partition *part1_entry = (struct partition *) buf;
- struct partition *part_entry = part1_entry;
+ if (*(unsigned short *) (buf + 64) == MSDOS_LABEL_MAGIC) {
+ struct msdos_partition *part1_entry =
+ (struct msdos_partition *)buf;
+ struct msdos_partition *part_entry = part1_entry;
int saved_cyl = diskparam->cylinders, part_no;
unsigned char part_end_head = 0, part_end_sector = 0;
diff --git a/drivers/scsi/aacraid/linit.c b/drivers/scsi/aacraid/linit.c
index ee6bc2f9b80a..0443b74390cf 100644
--- a/drivers/scsi/aacraid/linit.c
+++ b/drivers/scsi/aacraid/linit.c
@@ -33,6 +33,7 @@
#include <linux/syscalls.h>
#include <linux/delay.h>
#include <linux/kthread.h>
+#include <linux/msdos_partition.h>
#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
@@ -328,9 +329,9 @@ static int aac_biosparm(struct scsi_device *sdev, struct block_device *bdev,
buf = scsi_bios_ptable(bdev);
if (!buf)
return 0;
- if(*(__le16 *)(buf + 0x40) == cpu_to_le16(0xaa55)) {
- struct partition *first = (struct partition * )buf;
- struct partition *entry = first;
+ if (*(__le16 *)(buf + 0x40) == cpu_to_le16(MSDOS_LABEL_MAGIC)) {
+ struct msdos_partition *first = (struct msdos_partition *)buf;
+ struct msdos_partition *entry = first;
int saved_cylinders = param->cylinders;
int num;
unsigned char end_head, end_sec;
diff --git a/drivers/scsi/aic7xxx/aic79xx_osm.c b/drivers/scsi/aic7xxx/aic79xx_osm.c
index 57992519384e..dc4fe334efd0 100644
--- a/drivers/scsi/aic7xxx/aic79xx_osm.c
+++ b/drivers/scsi/aic7xxx/aic79xx_osm.c
@@ -723,24 +723,17 @@ static int
ahd_linux_biosparam(struct scsi_device *sdev, struct block_device *bdev,
sector_t capacity, int geom[])
{
- uint8_t *bh;
int heads;
int sectors;
int cylinders;
- int ret;
int extended;
struct ahd_softc *ahd;
ahd = *((struct ahd_softc **)sdev->host->hostdata);
- bh = scsi_bios_ptable(bdev);
- if (bh) {
- ret = scsi_partsize(bh, capacity,
- &geom[2], &geom[0], &geom[1]);
- kfree(bh);
- if (ret != -1)
- return (ret);
- }
+ if (scsi_partsize(bdev, capacity, geom))
+ return 0;
+
heads = 64;
sectors = 32;
cylinders = aic_sector_div(capacity, heads, sectors);
diff --git a/drivers/scsi/aic7xxx/aic7xxx_osm.c b/drivers/scsi/aic7xxx/aic7xxx_osm.c
index d5c4a0d23706..2edfa0594f18 100644
--- a/drivers/scsi/aic7xxx/aic7xxx_osm.c
+++ b/drivers/scsi/aic7xxx/aic7xxx_osm.c
@@ -695,11 +695,9 @@ static int
ahc_linux_biosparam(struct scsi_device *sdev, struct block_device *bdev,
sector_t capacity, int geom[])
{
- uint8_t *bh;
int heads;
int sectors;
int cylinders;
- int ret;
int extended;
struct ahc_softc *ahc;
u_int channel;
@@ -707,14 +705,9 @@ ahc_linux_biosparam(struct scsi_device *sdev, struct block_device *bdev,
ahc = *((struct ahc_softc **)sdev->host->hostdata);
channel = sdev_channel(sdev);
- bh = scsi_bios_ptable(bdev);
- if (bh) {
- ret = scsi_partsize(bh, capacity,
- &geom[2], &geom[0], &geom[1]);
- kfree(bh);
- if (ret != -1)
- return (ret);
- }
+ if (scsi_partsize(bdev, capacity, geom))
+ return 0;
+
heads = 64;
sectors = 32;
cylinders = aic_sector_div(capacity, heads, sectors);
diff --git a/drivers/scsi/arcmsr/arcmsr_hba.c b/drivers/scsi/arcmsr/arcmsr_hba.c
index 40dc8eac0e3a..c2c79a37a9ef 100644
--- a/drivers/scsi/arcmsr/arcmsr_hba.c
+++ b/drivers/scsi/arcmsr/arcmsr_hba.c
@@ -353,16 +353,11 @@ static irqreturn_t arcmsr_do_interrupt(int irq, void *dev_id)
static int arcmsr_bios_param(struct scsi_device *sdev,
struct block_device *bdev, sector_t capacity, int *geom)
{
- int ret, heads, sectors, cylinders, total_capacity;
- unsigned char *buffer;/* return copy of block device's partition table */
+ int heads, sectors, cylinders, total_capacity;
+
+ if (scsi_partsize(bdev, capacity, geom))
+ return 0;
- buffer = scsi_bios_ptable(bdev);
- if (buffer) {
- ret = scsi_partsize(buffer, capacity, &geom[2], &geom[0], &geom[1]);
- kfree(buffer);
- if (ret != -1)
- return ret;
- }
total_capacity = capacity;
heads = 64;
sectors = 32;
diff --git a/drivers/scsi/megaraid.c b/drivers/scsi/megaraid.c
index ff6d4aa92421..f27ffd088c8a 100644
--- a/drivers/scsi/megaraid.c
+++ b/drivers/scsi/megaraid.c
@@ -2795,11 +2795,9 @@ megaraid_biosparam(struct scsi_device *sdev, struct block_device *bdev,
sector_t capacity, int geom[])
{
adapter_t *adapter;
- unsigned char *bh;
int heads;
int sectors;
int cylinders;
- int rval;
/* Get pointer to host config structure */
adapter = (adapter_t *)sdev->host->hostdata;
@@ -2826,15 +2824,8 @@ megaraid_biosparam(struct scsi_device *sdev, struct block_device *bdev,
geom[2] = cylinders;
}
else {
- bh = scsi_bios_ptable(bdev);
-
- if( bh ) {
- rval = scsi_partsize(bh, capacity,
- &geom[2], &geom[0], &geom[1]);
- kfree(bh);
- if( rval != -1 )
- return rval;
- }
+ if (scsi_partsize(bdev, capacity, geom))
+ return 0;
dev_info(&adapter->dev->dev,
"invalid partition on this disk on channel %d\n",
diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c
index 44cb054d5e66..4c6c448dc2df 100644
--- a/drivers/scsi/scsi_debug.c
+++ b/drivers/scsi/scsi_debug.c
@@ -38,6 +38,7 @@
#include <linux/hrtimer.h>
#include <linux/uuid.h>
#include <linux/t10-pi.h>
+#include <linux/msdos_partition.h>
#include <net/checksum.h>
@@ -4146,7 +4147,7 @@ static int scsi_debug_host_reset(struct scsi_cmnd *SCpnt)
static void __init sdebug_build_parts(unsigned char *ramp,
unsigned long store_size)
{
- struct partition *pp;
+ struct msdos_partition *pp;
int starts[SDEBUG_MAX_PARTS + 2];
int sectors_per_part, num_sectors, k;
int heads_by_sects, start_sec, end_sec;
@@ -4171,7 +4172,7 @@ static void __init sdebug_build_parts(unsigned char *ramp,
ramp[510] = 0x55; /* magic partition markings */
ramp[511] = 0xAA;
- pp = (struct partition *)(ramp + 0x1be);
+ pp = (struct msdos_partition *)(ramp + 0x1be);
for (k = 0; starts[k + 1]; ++k, ++pp) {
start_sec = starts[k];
end_sec = starts[k + 1] - 1;
diff --git a/drivers/scsi/scsicam.c b/drivers/scsi/scsicam.c
index e969138051c7..682cf08ab041 100644
--- a/drivers/scsi/scsicam.c
+++ b/drivers/scsi/scsicam.c
@@ -17,14 +17,11 @@
#include <linux/genhd.h>
#include <linux/kernel.h>
#include <linux/blkdev.h>
+#include <linux/msdos_partition.h>
#include <asm/unaligned.h>
#include <scsi/scsicam.h>
-
-static int setsize(unsigned long capacity, unsigned int *cyls, unsigned int *hds,
- unsigned int *secs);
-
/**
* scsi_bios_ptable - Read PC partition table out of first sector of device.
* @dev: from this device
@@ -35,105 +32,48 @@ static int setsize(unsigned long capacity, unsigned int *cyls, unsigned int *hds
*/
unsigned char *scsi_bios_ptable(struct block_device *dev)
{
- unsigned char *res = kmalloc(66, GFP_KERNEL);
- if (res) {
- struct block_device *bdev = dev->bd_contains;
- Sector sect;
- void *data = read_dev_sector(bdev, 0, &sect);
- if (data) {
- memcpy(res, data + 0x1be, 66);
- put_dev_sector(sect);
- } else {
- kfree(res);
- res = NULL;
- }
- }
- return res;
-}
-EXPORT_SYMBOL(scsi_bios_ptable);
-
-/**
- * scsicam_bios_param - Determine geometry of a disk in cylinders/heads/sectors.
- * @bdev: which device
- * @capacity: size of the disk in sectors
- * @ip: return value: ip[0]=heads, ip[1]=sectors, ip[2]=cylinders
- *
- * Description : determine the BIOS mapping/geometry used for a drive in a
- * SCSI-CAM system, storing the results in ip as required
- * by the HDIO_GETGEO ioctl().
- *
- * Returns : -1 on failure, 0 on success.
- */
-
-int scsicam_bios_param(struct block_device *bdev, sector_t capacity, int *ip)
-{
- unsigned char *p;
- u64 capacity64 = capacity; /* Suppress gcc warning */
- int ret;
-
- p = scsi_bios_ptable(bdev);
- if (!p)
- return -1;
-
- /* try to infer mapping from partition table */
- ret = scsi_partsize(p, (unsigned long)capacity, (unsigned int *)ip + 2,
- (unsigned int *)ip + 0, (unsigned int *)ip + 1);
- kfree(p);
-
- if (ret == -1 && capacity64 < (1ULL << 32)) {
- /* pick some standard mapping with at most 1024 cylinders,
- and at most 62 sectors per track - this works up to
- 7905 MB */
- ret = setsize((unsigned long)capacity, (unsigned int *)ip + 2,
- (unsigned int *)ip + 0, (unsigned int *)ip + 1);
- }
-
- /* if something went wrong, then apparently we have to return
- a geometry with more than 1024 cylinders */
- if (ret || ip[0] > 255 || ip[1] > 63) {
- if ((capacity >> 11) > 65534) {
- ip[0] = 255;
- ip[1] = 63;
- } else {
- ip[0] = 64;
- ip[1] = 32;
- }
+ struct address_space *mapping = dev->bd_contains->bd_inode->i_mapping;
+ unsigned char *res = NULL;
+ struct page *page;
- if (capacity > 65535*63*255)
- ip[2] = 65535;
- else
- ip[2] = (unsigned long)capacity / (ip[0] * ip[1]);
- }
+ page = read_mapping_page(mapping, 0, NULL);
+ if (IS_ERR(page))
+ return NULL;
- return 0;
+ if (!PageError(page))
+ res = kmemdup(page_address(page) + 0x1be, 66, GFP_KERNEL);
+ put_page(page);
+ return res;
}
-EXPORT_SYMBOL(scsicam_bios_param);
+EXPORT_SYMBOL(scsi_bios_ptable);
/**
* scsi_partsize - Parse cylinders/heads/sectors from PC partition table
- * @buf: partition table, see scsi_bios_ptable()
+ * @bdev: block device to parse
* @capacity: size of the disk in sectors
- * @cyls: put cylinders here
- * @hds: put heads here
- * @secs: put sectors here
+ * @geom: output in form of [hds, cylinders, sectors]
*
* Determine the BIOS mapping/geometry used to create the partition
- * table, storing the results in @cyls, @hds, and @secs
+ * table, storing the results in @geom.
*
- * Returns: -1 on failure, 0 on success.
+ * Returns: %false on failure, %true on success.
*/
-
-int scsi_partsize(unsigned char *buf, unsigned long capacity,
- unsigned int *cyls, unsigned int *hds, unsigned int *secs)
+bool scsi_partsize(struct block_device *bdev, sector_t capacity, int geom[3])
{
- struct partition *p = (struct partition *)buf, *largest = NULL;
- int i, largest_cyl;
int cyl, ext_cyl, end_head, end_cyl, end_sector;
unsigned int logical_end, physical_end, ext_physical_end;
+ struct msdos_partition *p, *largest = NULL;
+ void *buf;
+ int ret = false;
+ buf = scsi_bios_ptable(bdev);
+ if (!buf)
+ return false;
if (*(unsigned short *) (buf + 64) == 0xAA55) {
- for (largest_cyl = -1, i = 0; i < 4; ++i, ++p) {
+ int largest_cyl = -1, i;
+
+ for (i = 0, p = buf; i < 4; i++, p++) {
if (!p->sys_ind)
continue;
#ifdef DEBUG
@@ -153,7 +93,7 @@ int scsi_partsize(unsigned char *buf, unsigned long capacity,
end_sector = largest->end_sector & 0x3f;
if (end_head + 1 == 0 || end_sector == 0)
- return -1;
+ goto out_free_buf;
#ifdef DEBUG
printk("scsicam_bios_param : end at h = %d, c = %d, s = %d\n",
@@ -178,19 +118,24 @@ int scsi_partsize(unsigned char *buf, unsigned long capacity,
,logical_end, physical_end, ext_physical_end, ext_cyl);
#endif
- if ((logical_end == physical_end) ||
- (end_cyl == 1023 && ext_physical_end == logical_end)) {
- *secs = end_sector;
- *hds = end_head + 1;
- *cyls = capacity / ((end_head + 1) * end_sector);
- return 0;
+ if (logical_end == physical_end ||
+ (end_cyl == 1023 && ext_physical_end == logical_end)) {
+ geom[0] = end_head + 1;
+ geom[1] = end_sector;
+ geom[2] = (unsigned long)capacity /
+ ((end_head + 1) * end_sector);
+ ret = true;
+ goto out_free_buf;
}
#ifdef DEBUG
printk("scsicam_bios_param : logical (%u) != physical (%u)\n",
logical_end, physical_end);
#endif
}
- return -1;
+
+out_free_buf:
+ kfree(buf);
+ return ret;
}
EXPORT_SYMBOL(scsi_partsize);
@@ -258,3 +203,56 @@ static int setsize(unsigned long capacity, unsigned int *cyls, unsigned int *hds
*hds = (unsigned int) heads;
return (rv);
}
+
+/**
+ * scsicam_bios_param - Determine geometry of a disk in cylinders/heads/sectors.
+ * @bdev: which device
+ * @capacity: size of the disk in sectors
+ * @ip: return value: ip[0]=heads, ip[1]=sectors, ip[2]=cylinders
+ *
+ * Description : determine the BIOS mapping/geometry used for a drive in a
+ * SCSI-CAM system, storing the results in ip as required
+ * by the HDIO_GETGEO ioctl().
+ *
+ * Returns : -1 on failure, 0 on success.
+ */
+int scsicam_bios_param(struct block_device *bdev, sector_t capacity, int *ip)
+{
+ u64 capacity64 = capacity; /* Suppress gcc warning */
+ int ret = 0;
+
+ /* try to infer mapping from partition table */
+ if (scsi_partsize(bdev, capacity, ip))
+ return 0;
+
+ if (capacity64 < (1ULL << 32)) {
+ /*
+ * Pick some standard mapping with at most 1024 cylinders, and
+ * at most 62 sectors per track - this works up to 7905 MB.
+ */
+ ret = setsize((unsigned long)capacity, (unsigned int *)ip + 2,
+ (unsigned int *)ip + 0, (unsigned int *)ip + 1);
+ }
+
+ /*
+ * If something went wrong, then apparently we have to return a geometry
+ * with more than 1024 cylinders.
+ */
+ if (ret || ip[0] > 255 || ip[1] > 63) {
+ if ((capacity >> 11) > 65534) {
+ ip[0] = 255;
+ ip[1] = 63;
+ } else {
+ ip[0] = 64;
+ ip[1] = 32;
+ }
+
+ if (capacity > 65535*63*255)
+ ip[2] = 65535;
+ else
+ ip[2] = (unsigned long)capacity / (ip[0] * ip[1]);
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL(scsicam_bios_param);
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index 2710a0e5ae6d..a793cb08d025 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -3189,7 +3189,8 @@ static int sd_revalidate_disk(struct gendisk *disk)
sdkp->first_scan = 0;
- set_capacity(disk, logical_to_sectors(sdp, sdkp->capacity));
+ set_capacity_revalidate_and_notify(disk,
+ logical_to_sectors(sdp, sdkp->capacity), false);
sd_config_write_same(sdkp);
kfree(buffer);