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Merge branch 'for-4.14/block' of git://git.kernel.dk/linux-block

Browse source 
Pull block layer updates from Jens Axboe:
 "This is the first pull request for 4.14, containing most of the code
  changes. It's a quiet series this round, which I think we needed after
  the churn of the last few series. This contains:

   - Fix for a registration race in loop, from Anton Volkov.

   - Overflow complaint fix from Arnd for DAC960.

   - Series of drbd changes from the usual suspects.

   - Conversion of the stec/skd driver to blk-mq. From Bart.

   - A few BFQ improvements/fixes from Paolo.

   - CFQ improvement from Ritesh, allowing idling for group idle.

   - A few fixes found by Dan's smatch, courtesy of Dan.

   - A warning fixup for a race between changing the IO scheduler and
     device remova. From David Jeffery.

   - A few nbd fixes from Josef.

   - Support for cgroup info in blktrace, from Shaohua.

   - Also from Shaohua, new features in the null_blk driver to allow it
     to actually hold data, among other things.

   - Various corner cases and error handling fixes from Weiping Zhang.

   - Improvements to the IO stats tracking for blk-mq from me. Can
     drastically improve performance for fast devices and/or big
     machines.

   - Series from Christoph removing bi_bdev as being needed for IO
     submission, in preparation for nvme multipathing code.

   - Series from Bart, including various cleanups and fixes for switch
     fall through case complaints"

* 'for-4.14/block' of git://git.kernel.dk/linux-block: (162 commits)
  kernfs: checking for IS_ERR() instead of NULL
  drbd: remove BIOSET_NEED_RESCUER flag from drbd_{md_,}io_bio_set
  drbd: Fix allyesconfig build, fix recent commit
  drbd: switch from kmalloc() to kmalloc_array()
  drbd: abort drbd_start_resync if there is no connection
  drbd: move global variables to drbd namespace and make some static
  drbd: rename "usermode_helper" to "drbd_usermode_helper"
  drbd: fix race between handshake and admin disconnect/down
  drbd: fix potential deadlock when trying to detach during handshake
  drbd: A single dot should be put into a sequence.
  drbd: fix rmmod cleanup, remove _all_ debugfs entries
  drbd: Use setup_timer() instead of init_timer() to simplify the code.
  drbd: fix potential get_ldev/put_ldev refcount imbalance during attach
  drbd: new disk-option disable-write-same
  drbd: Fix resource role for newly created resources in events2
  drbd: mark symbols static where possible
  drbd: Send P_NEG_ACK upon write error in protocol != C
  drbd: add explicit plugging when submitting batches
  drbd: change list_for_each_safe to while(list_first_entry_or_null)
  drbd: introduce drbd_recv_header_maybe_unplug
  ...
This commit is contained in:
Linus Torvalds 2017-09-07 11:59:42 -07:00
commit a0725ab0c7
160 changed files with 3684 additions and 3486 deletions
Download patch file Download diff file Expand all files Collapse all files

12
drivers/block/DAC960.c
View file

@ -1678,9 +1678,12 @@ static bool DAC960_V1_ReadControllerConfiguration(DAC960_Controller_T
Enquiry2->FirmwareID.FirmwareType = '0';
Enquiry2->FirmwareID.TurnID = 0;
}
sprintf(Controller->FirmwareVersion, "%d.%02d-%c-%02d",
Enquiry2->FirmwareID.MajorVersion, Enquiry2->FirmwareID.MinorVersion,
Enquiry2->FirmwareID.FirmwareType, Enquiry2->FirmwareID.TurnID);
snprintf(Controller->FirmwareVersion, sizeof(Controller->FirmwareVersion),
"%d.%02d-%c-%02d",
Enquiry2->FirmwareID.MajorVersion,
Enquiry2->FirmwareID.MinorVersion,
Enquiry2->FirmwareID.FirmwareType,
Enquiry2->FirmwareID.TurnID);
if (!((Controller->FirmwareVersion[0] == '5' &&
strcmp(Controller->FirmwareVersion, "5.06") >= 0) ||
(Controller->FirmwareVersion[0] == '4' &&
@ -6588,7 +6591,8 @@ static void DAC960_CreateProcEntries(DAC960_Controller_T *Controller)
&dac960_proc_fops);
}
sprintf(Controller->ControllerName, "c%d", Controller->ControllerNumber);
snprintf(Controller->ControllerName, sizeof(Controller->ControllerName),
"c%d", Controller->ControllerNumber);
ControllerProcEntry = proc_mkdir(Controller->ControllerName,
DAC960_ProcDirectoryEntry);
proc_create_data("initial_status", 0, ControllerProcEntry, &dac960_initial_status_proc_fops, Controller);

1
drivers/block/Kconfig
View file

@ -17,6 +17,7 @@ if BLK_DEV
config BLK_DEV_NULL_BLK
tristate "Null test block driver"
depends on CONFIGFS_FS
config BLK_DEV_FD
tristate "Normal floppy disk support"

5
drivers/block/brd.c
View file

@ -294,14 +294,13 @@ out:
static blk_qc_t brd_make_request(struct request_queue *q, struct bio *bio)
{
struct block_device *bdev = bio->bi_bdev;
struct brd_device *brd = bdev->bd_disk->private_data;
struct brd_device *brd = bio->bi_disk->private_data;
struct bio_vec bvec;
sector_t sector;
struct bvec_iter iter;
sector = bio->bi_iter.bi_sector;
if (bio_end_sector(bio) > get_capacity(bdev->bd_disk))
if (bio_end_sector(bio) > get_capacity(bio->bi_disk))
goto io_error;
bio_for_each_segment(bvec, bio, iter) {

2
drivers/block/drbd/drbd_actlog.c
View file

@ -151,7 +151,7 @@ static int _drbd_md_sync_page_io(struct drbd_device *device,
op_flags |= REQ_SYNC;
bio = bio_alloc_drbd(GFP_NOIO);
bio->bi_bdev = bdev->md_bdev;
bio_set_dev(bio, bdev->md_bdev);
bio->bi_iter.bi_sector = sector;
err = -EIO;
if (bio_add_page(bio, device->md_io.page, size, 0) != size)

2
drivers/block/drbd/drbd_bitmap.c
View file

@ -1019,7 +1019,7 @@ static void bm_page_io_async(struct drbd_bm_aio_ctx *ctx, int page_nr) __must_ho
bm_store_page_idx(page, page_nr);
} else
page = b->bm_pages[page_nr];
bio->bi_bdev = device->ldev->md_bdev;
bio_set_dev(bio, device->ldev->md_bdev);
bio->bi_iter.bi_sector = on_disk_sector;
/* bio_add_page of a single page to an empty bio will always succeed,
* according to api. Do we want to assert that? */

31
drivers/block/drbd/drbd_int.h
View file

@ -63,19 +63,15 @@
# define __must_hold(x)
#endif
/* module parameter, defined in drbd_main.c */
extern unsigned int minor_count;
extern bool disable_sendpage;
extern bool allow_oos;
void tl_abort_disk_io(struct drbd_device *device);
/* shared module parameters, defined in drbd_main.c */
#ifdef CONFIG_DRBD_FAULT_INJECTION
extern int enable_faults;
extern int fault_rate;
extern int fault_devs;
extern int drbd_enable_faults;
extern int drbd_fault_rate;
#endif
extern char usermode_helper[];
extern unsigned int drbd_minor_count;
extern char drbd_usermode_helper[];
extern int drbd_proc_details;
/* This is used to stop/restart our threads.
@ -181,8 +177,8 @@ _drbd_insert_fault(struct drbd_device *device, unsigned int type);
static inline int
drbd_insert_fault(struct drbd_device *device, unsigned int type) {
#ifdef CONFIG_DRBD_FAULT_INJECTION
return fault_rate &&
(enable_faults & (1<<type)) &&
return drbd_fault_rate &&
(drbd_enable_faults & (1<<type)) &&
_drbd_insert_fault(device, type);
#else
return 0;
@ -745,6 +741,8 @@ struct drbd_connection {
unsigned current_tle_writes; /* writes seen within this tl epoch */
unsigned long last_reconnect_jif;
/* empty member on older kernels without blk_start_plug() */
struct blk_plug receiver_plug;
struct drbd_thread receiver;
struct drbd_thread worker;
struct drbd_thread ack_receiver;
@ -1131,7 +1129,8 @@ extern void conn_send_sr_reply(struct drbd_connection *connection, enum drbd_sta
extern int drbd_send_rs_deallocated(struct drbd_peer_device *, struct drbd_peer_request *);
extern void drbd_backing_dev_free(struct drbd_device *device, struct drbd_backing_dev *ldev);
extern void drbd_device_cleanup(struct drbd_device *device);
void drbd_print_uuids(struct drbd_device *device, const char *text);
extern void drbd_print_uuids(struct drbd_device *device, const char *text);
extern void drbd_queue_unplug(struct drbd_device *device);
extern void conn_md_sync(struct drbd_connection *connection);
extern void drbd_md_write(struct drbd_device *device, void *buffer);
@ -1463,8 +1462,6 @@ extern struct drbd_resource *drbd_find_resource(const char *name);
extern void drbd_destroy_resource(struct kref *kref);
extern void conn_free_crypto(struct drbd_connection *connection);
extern int proc_details;
/* drbd_req */
extern void do_submit(struct work_struct *ws);
extern void __drbd_make_request(struct drbd_device *, struct bio *, unsigned long);
@ -1628,8 +1625,8 @@ static inline void drbd_generic_make_request(struct drbd_device *device,
int fault_type, struct bio *bio)
{
__release(local);
if (!bio->bi_bdev) {
drbd_err(device, "drbd_generic_make_request: bio->bi_bdev == NULL\n");
if (!bio->bi_disk) {
drbd_err(device, "drbd_generic_make_request: bio->bi_disk == NULL\n");
bio->bi_status = BLK_STS_IOERR;
bio_endio(bio);
return;

111
drivers/block/drbd/drbd_main.c
View file

@ -77,41 +77,41 @@ MODULE_PARM_DESC(minor_count, "Approximate number of drbd devices ("
MODULE_ALIAS_BLOCKDEV_MAJOR(DRBD_MAJOR);
#include <linux/moduleparam.h>
/* allow_open_on_secondary */
MODULE_PARM_DESC(allow_oos, "DONT USE!");
/* thanks to these macros, if compiled into the kernel (not-module),
* this becomes the boot parameter drbd.minor_count */
module_param(minor_count, uint, 0444);
module_param(disable_sendpage, bool, 0644);
module_param(allow_oos, bool, 0);
module_param(proc_details, int, 0644);
* these become boot parameters (e.g., drbd.minor_count) */
#ifdef CONFIG_DRBD_FAULT_INJECTION
int enable_faults;
int fault_rate;
static int fault_count;
int fault_devs;
int drbd_enable_faults;
int drbd_fault_rate;
static int drbd_fault_count;
static int drbd_fault_devs;
/* bitmap of enabled faults */
module_param(enable_faults, int, 0664);
module_param_named(enable_faults, drbd_enable_faults, int, 0664);
/* fault rate % value - applies to all enabled faults */
module_param(fault_rate, int, 0664);
module_param_named(fault_rate, drbd_fault_rate, int, 0664);
/* count of faults inserted */
module_param(fault_count, int, 0664);
module_param_named(fault_count, drbd_fault_count, int, 0664);
/* bitmap of devices to insert faults on */
module_param(fault_devs, int, 0644);
module_param_named(fault_devs, drbd_fault_devs, int, 0644);
#endif
/* module parameter, defined */
unsigned int minor_count = DRBD_MINOR_COUNT_DEF;
bool disable_sendpage;
bool allow_oos;
int proc_details; /* Detail level in proc drbd*/
/* module parameters we can keep static */
static bool drbd_allow_oos; /* allow_open_on_secondary */
static bool drbd_disable_sendpage;
MODULE_PARM_DESC(allow_oos, "DONT USE!");
module_param_named(allow_oos, drbd_allow_oos, bool, 0);
module_param_named(disable_sendpage, drbd_disable_sendpage, bool, 0644);
/* module parameters we share */
int drbd_proc_details; /* Detail level in proc drbd*/
module_param_named(proc_details, drbd_proc_details, int, 0644);
/* module parameters shared with defaults */
unsigned int drbd_minor_count = DRBD_MINOR_COUNT_DEF;
/* Module parameter for setting the user mode helper program
* to run. Default is /sbin/drbdadm */
char usermode_helper[80] = "/sbin/drbdadm";
module_param_string(usermode_helper, usermode_helper, sizeof(usermode_helper), 0644);
char drbd_usermode_helper[80] = "/sbin/drbdadm";
module_param_named(minor_count, drbd_minor_count, uint, 0444);
module_param_string(usermode_helper, drbd_usermode_helper, sizeof(drbd_usermode_helper), 0644);
/* in 2.6.x, our device mapping and config info contains our virtual gendisks
* as member "struct gendisk *vdisk;"
@ -923,7 +923,9 @@ void drbd_gen_and_send_sync_uuid(struct drbd_peer_device *peer_device)
}
/* communicated if (agreed_features & DRBD_FF_WSAME) */
void assign_p_sizes_qlim(struct drbd_device *device, struct p_sizes *p, struct request_queue *q)
static void
assign_p_sizes_qlim(struct drbd_device *device, struct p_sizes *p,
struct request_queue *q)
{
if (q) {
p->qlim->physical_block_size = cpu_to_be32(queue_physical_block_size(q));
@ -1560,7 +1562,7 @@ static int _drbd_send_page(struct drbd_peer_device *peer_device, struct page *pa
* put_page(); and would cause either a VM_BUG directly, or
* __page_cache_release a page that would actually still be referenced
* by someone, leading to some obscure delayed Oops somewhere else. */
if (disable_sendpage || (page_count(page) < 1) || PageSlab(page))
if (drbd_disable_sendpage || (page_count(page) < 1) || PageSlab(page))
return _drbd_no_send_page(peer_device, page, offset, size, msg_flags);
msg_flags |= MSG_NOSIGNAL;
@ -1932,7 +1934,7 @@ static int drbd_open(struct block_device *bdev, fmode_t mode)
if (device->state.role != R_PRIMARY) {
if (mode & FMODE_WRITE)
rv = -EROFS;
else if (!allow_oos)
else if (!drbd_allow_oos)
rv = -EMEDIUMTYPE;
}
@ -1952,6 +1954,19 @@ static void drbd_release(struct gendisk *gd, fmode_t mode)
mutex_unlock(&drbd_main_mutex);
}
/* need to hold resource->req_lock */
void drbd_queue_unplug(struct drbd_device *device)
{
if (device->state.pdsk >= D_INCONSISTENT && device->state.conn >= C_CONNECTED) {
D_ASSERT(device, device->state.role == R_PRIMARY);
if (test_and_clear_bit(UNPLUG_REMOTE, &device->flags)) {
drbd_queue_work_if_unqueued(
&first_peer_device(device)->connection->sender_work,
&device->unplug_work);
}
}
}
static void drbd_set_defaults(struct drbd_device *device)
{
/* Beware! The actual layout differs
@ -2008,18 +2023,14 @@ void drbd_init_set_defaults(struct drbd_device *device)
device->unplug_work.cb = w_send_write_hint;
device->bm_io_work.w.cb = w_bitmap_io;
init_timer(&device->resync_timer);
init_timer(&device->md_sync_timer);
init_timer(&device->start_resync_timer);
init_timer(&device->request_timer);
device->resync_timer.function = resync_timer_fn;
device->resync_timer.data = (unsigned long) device;
device->md_sync_timer.function = md_sync_timer_fn;
device->md_sync_timer.data = (unsigned long) device;
device->start_resync_timer.function = start_resync_timer_fn;
device->start_resync_timer.data = (unsigned long) device;
device->request_timer.function = request_timer_fn;
device->request_timer.data = (unsigned long) device;
setup_timer(&device->resync_timer, resync_timer_fn,
(unsigned long)device);
setup_timer(&device->md_sync_timer, md_sync_timer_fn,
(unsigned long)device);
setup_timer(&device->start_resync_timer, start_resync_timer_fn,
(unsigned long)device);
setup_timer(&device->request_timer, request_timer_fn,
(unsigned long)device);
init_waitqueue_head(&device->misc_wait);
init_waitqueue_head(&device->state_wait);
@ -2131,7 +2142,7 @@ static void drbd_destroy_mempools(void)
static int drbd_create_mempools(void)
{
struct page *page;
const int number = (DRBD_MAX_BIO_SIZE/PAGE_SIZE) * minor_count;
const int number = (DRBD_MAX_BIO_SIZE/PAGE_SIZE) * drbd_minor_count;
int i;
/* prepare our caches and mempools */
@ -2167,13 +2178,12 @@ static int drbd_create_mempools(void)
goto Enomem;
/* mempools */
drbd_io_bio_set = bioset_create(BIO_POOL_SIZE, 0, BIOSET_NEED_RESCUER);
drbd_io_bio_set = bioset_create(BIO_POOL_SIZE, 0, 0);
if (drbd_io_bio_set == NULL)
goto Enomem;
drbd_md_io_bio_set = bioset_create(DRBD_MIN_POOL_PAGES, 0,
BIOSET_NEED_BVECS |
BIOSET_NEED_RESCUER);
BIOSET_NEED_BVECS);
if (drbd_md_io_bio_set == NULL)
goto Enomem;
@ -2409,7 +2419,6 @@ static void drbd_cleanup(void)
destroy_workqueue(retry.wq);
drbd_genl_unregister();
drbd_debugfs_cleanup();
idr_for_each_entry(&drbd_devices, device, i)
drbd_delete_device(device);
@ -2420,6 +2429,8 @@ static void drbd_cleanup(void)
drbd_free_resource(resource);
}
drbd_debugfs_cleanup();
drbd_destroy_mempools();
unregister_blkdev(DRBD_MAJOR, "drbd");
@ -2972,12 +2983,12 @@ static int __init drbd_init(void)
{
int err;
if (minor_count < DRBD_MINOR_COUNT_MIN || minor_count > DRBD_MINOR_COUNT_MAX) {
pr_err("invalid minor_count (%d)\n", minor_count);
if (drbd_minor_count < DRBD_MINOR_COUNT_MIN || drbd_minor_count > DRBD_MINOR_COUNT_MAX) {
pr_err("invalid minor_count (%d)\n", drbd_minor_count);
#ifdef MODULE
return -EINVAL;
#else
minor_count = DRBD_MINOR_COUNT_DEF;
drbd_minor_count = DRBD_MINOR_COUNT_DEF;
#endif
}
@ -3900,12 +3911,12 @@ _drbd_insert_fault(struct drbd_device *device, unsigned int type)
static struct fault_random_state rrs = {0, 0};
unsigned int ret = (
(fault_devs == 0 ||
((1 << device_to_minor(device)) & fault_devs) != 0) &&
(((_drbd_fault_random(&rrs) % 100) + 1) <= fault_rate));
(drbd_fault_devs == 0 ||
((1 << device_to_minor(device)) & drbd_fault_devs) != 0) &&
(((_drbd_fault_random(&rrs) % 100) + 1) <= drbd_fault_rate));
if (ret) {
fault_count++;
drbd_fault_count++;
if (__ratelimit(&drbd_ratelimit_state))
drbd_warn(device, "***Simulating %s failure\n",

60
drivers/block/drbd/drbd_nl.c
View file

@ -344,7 +344,7 @@ int drbd_khelper(struct drbd_device *device, char *cmd)
(char[60]) { }, /* address */
NULL };
char mb[14];
char *argv[] = {usermode_helper, cmd, mb, NULL };
char *argv[] = {drbd_usermode_helper, cmd, mb, NULL };
struct drbd_connection *connection = first_peer_device(device)->connection;
struct sib_info sib;
int ret;
@ -359,19 +359,19 @@ int drbd_khelper(struct drbd_device *device, char *cmd)
* write out any unsynced meta data changes now */
drbd_md_sync(device);
drbd_info(device, "helper command: %s %s %s\n", usermode_helper, cmd, mb);
drbd_info(device, "helper command: %s %s %s\n", drbd_usermode_helper, cmd, mb);
sib.sib_reason = SIB_HELPER_PRE;
sib.helper_name = cmd;
drbd_bcast_event(device, &sib);
notify_helper(NOTIFY_CALL, device, connection, cmd, 0);
ret = call_usermodehelper(usermode_helper, argv, envp, UMH_WAIT_PROC);
ret = call_usermodehelper(drbd_usermode_helper, argv, envp, UMH_WAIT_PROC);
if (ret)
drbd_warn(device, "helper command: %s %s %s exit code %u (0x%x)\n",
usermode_helper, cmd, mb,
drbd_usermode_helper, cmd, mb,
(ret >> 8) & 0xff, ret);
else
drbd_info(device, "helper command: %s %s %s exit code %u (0x%x)\n",
usermode_helper, cmd, mb,
drbd_usermode_helper, cmd, mb,
(ret >> 8) & 0xff, ret);
sib.sib_reason = SIB_HELPER_POST;
sib.helper_exit_code = ret;
@ -396,24 +396,24 @@ enum drbd_peer_state conn_khelper(struct drbd_connection *connection, char *cmd)
(char[60]) { }, /* address */
NULL };
char *resource_name = connection->resource->name;
char *argv[] = {usermode_helper, cmd, resource_name, NULL };
char *argv[] = {drbd_usermode_helper, cmd, resource_name, NULL };
int ret;
setup_khelper_env(connection, envp);
conn_md_sync(connection);
drbd_info(connection, "helper command: %s %s %s\n", usermode_helper, cmd, resource_name);
drbd_info(connection, "helper command: %s %s %s\n", drbd_usermode_helper, cmd, resource_name);
/* TODO: conn_bcast_event() ?? */
notify_helper(NOTIFY_CALL, NULL, connection, cmd, 0);
ret = call_usermodehelper(usermode_helper, argv, envp, UMH_WAIT_PROC);
ret = call_usermodehelper(drbd_usermode_helper, argv, envp, UMH_WAIT_PROC);
if (ret)
drbd_warn(connection, "helper command: %s %s %s exit code %u (0x%x)\n",
usermode_helper, cmd, resource_name,
drbd_usermode_helper, cmd, resource_name,
(ret >> 8) & 0xff, ret);
else
drbd_info(connection, "helper command: %s %s %s exit code %u (0x%x)\n",
usermode_helper, cmd, resource_name,
drbd_usermode_helper, cmd, resource_name,
(ret >> 8) & 0xff, ret);
/* TODO: conn_bcast_event() ?? */
notify_helper(NOTIFY_RESPONSE, NULL, connection, cmd, ret);
@ -1236,12 +1236,18 @@ static void fixup_discard_if_not_supported(struct request_queue *q)
static void decide_on_write_same_support(struct drbd_device *device,
struct request_queue *q,
struct request_queue *b, struct o_qlim *o)
struct request_queue *b, struct o_qlim *o,
bool disable_write_same)
{
struct drbd_peer_device *peer_device = first_peer_device(device);
struct drbd_connection *connection = peer_device->connection;
bool can_do = b ? b->limits.max_write_same_sectors : true;
if (can_do && disable_write_same) {
can_do = false;
drbd_info(peer_device, "WRITE_SAME disabled by config\n");
}
if (can_do && connection->cstate >= C_CONNECTED && !(connection->agreed_features & DRBD_FF_WSAME)) {
can_do = false;
drbd_info(peer_device, "peer does not support WRITE_SAME\n");
@ -1302,6 +1308,7 @@ static void drbd_setup_queue_param(struct drbd_device *device, struct drbd_backi
struct request_queue *b = NULL;
struct disk_conf *dc;
bool discard_zeroes_if_aligned = true;
bool disable_write_same = false;
if (bdev) {
b = bdev->backing_bdev->bd_disk->queue;
@ -1311,6 +1318,7 @@ static void drbd_setup_queue_param(struct drbd_device *device, struct drbd_backi
dc = rcu_dereference(device->ldev->disk_conf);
max_segments = dc->max_bio_bvecs;
discard_zeroes_if_aligned = dc->discard_zeroes_if_aligned;
disable_write_same = dc->disable_write_same;
rcu_read_unlock();
blk_set_stacking_limits(&q->limits);
@ -1321,7 +1329,7 @@ static void drbd_setup_queue_param(struct drbd_device *device, struct drbd_backi
blk_queue_max_segments(q, max_segments ? max_segments : BLK_MAX_SEGMENTS);
blk_queue_segment_boundary(q, PAGE_SIZE-1);
decide_on_discard_support(device, q, b, discard_zeroes_if_aligned);
decide_on_write_same_support(device, q, b, o);
decide_on_write_same_support(device, q, b, o, disable_write_same);
if (b) {
blk_queue_stack_limits(q, b);
@ -1612,7 +1620,8 @@ int drbd_adm_disk_opts(struct sk_buff *skb, struct genl_info *info)
if (write_ordering_changed(old_disk_conf, new_disk_conf))
drbd_bump_write_ordering(device->resource, NULL, WO_BDEV_FLUSH);
if (old_disk_conf->discard_zeroes_if_aligned != new_disk_conf->discard_zeroes_if_aligned)
if (old_disk_conf->discard_zeroes_if_aligned != new_disk_conf->discard_zeroes_if_aligned
|| old_disk_conf->disable_write_same != new_disk_conf->disable_write_same)
drbd_reconsider_queue_parameters(device, device->ldev, NULL);
drbd_md_sync(device);
@ -2140,34 +2149,13 @@ int drbd_adm_attach(struct sk_buff *skb, struct genl_info *info)
static int adm_detach(struct drbd_device *device, int force)
{
enum drbd_state_rv retcode;
void *buffer;
int ret;
if (force) {
set_bit(FORCE_DETACH, &device->flags);
drbd_force_state(device, NS(disk, D_FAILED));
retcode = SS_SUCCESS;
goto out;
return SS_SUCCESS;
}
drbd_suspend_io(device); /* so no-one is stuck in drbd_al_begin_io */
buffer = drbd_md_get_buffer(device, __func__); /* make sure there is no in-flight meta-data IO */
if (buffer) {
retcode = drbd_request_state(device, NS(disk, D_FAILED));
drbd_md_put_buffer(device);
} else /* already <= D_FAILED */
retcode = SS_NOTHING_TO_DO;
/* D_FAILED will transition to DISKLESS. */
drbd_resume_io(device);
ret = wait_event_interruptible(device->misc_wait,
device->state.disk != D_FAILED);
if ((int)retcode == (int)SS_IS_DISKLESS)
retcode = SS_NOTHING_TO_DO;
if (ret)
retcode = ERR_INTR;
out:
return retcode;
return drbd_request_detach_interruptible(device);
}
/* Detaching the disk is a process in multiple stages. First we need to lock

10
drivers/block/drbd/drbd_proc.c
View file

@ -127,7 +127,7 @@ static void drbd_syncer_progress(struct drbd_device *device, struct seq_file *se
seq_putc(seq, '=');
seq_putc(seq, '>');
for (i = 0; i < y; i++)
seq_printf(seq, ".");
seq_putc(seq, '.');
seq_puts(seq, "] ");
if (state.conn == C_VERIFY_S || state.conn == C_VERIFY_T)
@ -179,7 +179,7 @@ static void drbd_syncer_progress(struct drbd_device *device, struct seq_file *se
seq_printf_with_thousands_grouping(seq, dbdt);
seq_puts(seq, " (");
/* ------------------------- ~3s average ------------------------ */
if (proc_details >= 1) {
if (drbd_proc_details >= 1) {
/* this is what drbd_rs_should_slow_down() uses */
i = (device->rs_last_mark + DRBD_SYNC_MARKS-1) % DRBD_SYNC_MARKS;
dt = (jiffies - device->rs_mark_time[i]) / HZ;
@ -209,7 +209,7 @@ static void drbd_syncer_progress(struct drbd_device *device, struct seq_file *se
}
seq_printf(seq, " K/sec%s\n", stalled ? " (stalled)" : "");
if (proc_details >= 1) {
if (drbd_proc_details >= 1) {
/* 64 bit:
* we convert to sectors in the display below. */
unsigned long bm_bits = drbd_bm_bits(device);
@ -332,13 +332,13 @@ static int drbd_seq_show(struct seq_file *seq, void *v)
state.conn == C_VERIFY_T)
drbd_syncer_progress(device, seq, state);
if (proc_details >= 1 && get_ldev_if_state(device, D_FAILED)) {
if (drbd_proc_details >= 1 && get_ldev_if_state(device, D_FAILED)) {
lc_seq_printf_stats(seq, device->resync);
lc_seq_printf_stats(seq, device->act_log);
put_ldev(device);
}
if (proc_details >= 2)
if (drbd_proc_details >= 2)
seq_printf(seq, "\tblocked on activity log: %d\n", atomic_read(&device->ap_actlog_cnt));
}
rcu_read_unlock();

60
drivers/block/drbd/drbd_receiver.c
View file

@ -332,7 +332,7 @@ static void drbd_free_pages(struct drbd_device *device, struct page *page, int i
if (page == NULL)
return;
if (drbd_pp_vacant > (DRBD_MAX_BIO_SIZE/PAGE_SIZE) * minor_count)
if (drbd_pp_vacant > (DRBD_MAX_BIO_SIZE/PAGE_SIZE) * drbd_minor_count)
i = page_chain_free(page);
else {
struct page *tmp;
@ -1100,7 +1100,10 @@ randomize:
idr_for_each_entry(&connection->peer_devices, peer_device, vnr)
mutex_lock(peer_device->device->state_mutex);
/* avoid a race with conn_request_state( C_DISCONNECTING ) */
spin_lock_irq(&connection->resource->req_lock);
set_bit(STATE_SENT, &connection->flags);
spin_unlock_irq(&connection->resource->req_lock);
idr_for_each_entry(&connection->peer_devices, peer_device, vnr)
mutex_unlock(peer_device->device->state_mutex);
@ -1194,6 +1197,14 @@ static int decode_header(struct drbd_connection *connection, void *header, struc
return 0;
}
static void drbd_unplug_all_devices(struct drbd_connection *connection)
{
if (current->plug == &connection->receiver_plug) {
blk_finish_plug(&connection->receiver_plug);
blk_start_plug(&connection->receiver_plug);
} /* else: maybe just schedule() ?? */
}
static int drbd_recv_header(struct drbd_connection *connection, struct packet_info *pi)
{
void *buffer = connection->data.rbuf;
@ -1209,6 +1220,36 @@ static int drbd_recv_header(struct drbd_connection *connection, struct packet_in
return err;
}
static int drbd_recv_header_maybe_unplug(struct drbd_connection *connection, struct packet_info *pi)
{
void *buffer = connection->data.rbuf;
unsigned int size = drbd_header_size(connection);
int err;
err = drbd_recv_short(connection->data.socket, buffer, size, MSG_NOSIGNAL|MSG_DONTWAIT);
if (err != size) {
/* If we have nothing in the receive buffer now, to reduce
* application latency, try to drain the backend queues as
* quickly as possible, and let remote TCP know what we have
* received so far. */
if (err == -EAGAIN) {
drbd_tcp_quickack(connection->data.socket);
drbd_unplug_all_devices(connection);
}
if (err > 0) {
buffer += err;
size -= err;
}
err = drbd_recv_all_warn(connection, buffer, size);
if (err)
return err;
}
err = decode_header(connection, connection->data.rbuf, pi);
connection->last_received = jiffies;
return err;
}
/* This is blkdev_issue_flush, but asynchronous.
* We want to submit to all component volumes in parallel,
* then wait for all completions.
@ -1223,7 +1264,7 @@ struct one_flush_context {
struct issue_flush_context *ctx;
};
void one_flush_endio(struct bio *bio)
static void one_flush_endio(struct bio *bio)
{
struct one_flush_context *octx = bio->bi_private;
struct drbd_device *device = octx->device;
@ -1265,7 +1306,7 @@ static void submit_one_flush(struct drbd_device *device, struct issue_flush_cont
octx->device = device;
octx->ctx = ctx;
bio->bi_bdev = device->ldev->backing_bdev;
bio_set_dev(bio, device->ldev->backing_bdev);
bio->bi_private = octx;
bio->bi_end_io = one_flush_endio;
bio->bi_opf = REQ_OP_FLUSH | REQ_PREFLUSH;
@ -1548,7 +1589,7 @@ next_bio:
}
/* > peer_req->i.sector, unless this is the first bio */
bio->bi_iter.bi_sector = sector;
bio->bi_bdev = device->ldev->backing_bdev;
bio_set_dev(bio, device->ldev->backing_bdev);
bio_set_op_attrs(bio, op, op_flags);
bio->bi_private = peer_req;
bio->bi_end_io = drbd_peer_request_endio;
@ -4085,7 +4126,7 @@ static int receive_uuids(struct drbd_connection *connection, struct packet_info
return config_unknown_volume(connection, pi);
device = peer_device->device;
p_uuid = kmalloc(sizeof(u64)*UI_EXTENDED_SIZE, GFP_NOIO);
p_uuid = kmalloc_array(UI_EXTENDED_SIZE, sizeof(*p_uuid), GFP_NOIO);
if (!p_uuid) {
drbd_err(device, "kmalloc of p_uuid failed\n");
return false;
@ -4882,8 +4923,8 @@ static void drbdd(struct drbd_connection *connection)
struct data_cmd const *cmd;
drbd_thread_current_set_cpu(&connection->receiver);
update_receiver_timing_details(connection, drbd_recv_header);
if (drbd_recv_header(connection, &pi))
update_receiver_timing_details(connection, drbd_recv_header_maybe_unplug);
if (drbd_recv_header_maybe_unplug(connection, &pi))
goto err_out;
cmd = &drbd_cmd_handler[pi.cmd];
@ -5375,8 +5416,11 @@ int drbd_receiver(struct drbd_thread *thi)
}
} while (h == 0);
if (h > 0)
if (h > 0) {
blk_start_plug(&connection->receiver_plug);
drbdd(connection);
blk_finish_plug(&connection->receiver_plug);
}
conn_disconnect(connection);

86
drivers/block/drbd/drbd_req.c
View file

@ -36,14 +36,18 @@ static bool drbd_may_do_local_read(struct drbd_device *device, sector_t sector,
/* Update disk stats at start of I/O request */
static void _drbd_start_io_acct(struct drbd_device *device, struct drbd_request *req)
{
generic_start_io_acct(bio_data_dir(req->master_bio), req->i.size >> 9,
&device->vdisk->part0);
struct request_queue *q = device->rq_queue;
generic_start_io_acct(q, bio_data_dir(req->master_bio),
req->i.size >> 9, &device->vdisk->part0);
}
/* Update disk stats when completing request upwards */
static void _drbd_end_io_acct(struct drbd_device *device, struct drbd_request *req)
{
generic_end_io_acct(bio_data_dir(req->master_bio),
struct request_queue *q = device->rq_queue;
generic_end_io_acct(q, bio_data_dir(req->master_bio),
&device->vdisk->part0, req->start_jif);
}
@ -1175,7 +1179,7 @@ drbd_submit_req_private_bio(struct drbd_request *req)
else
type = DRBD_FAULT_DT_RD;
bio->bi_bdev = device->ldev->backing_bdev;
bio_set_dev(bio, device->ldev->backing_bdev);
/* State may have changed since we grabbed our reference on the
* ->ldev member. Double check, and short-circuit to endio.
@ -1275,6 +1279,57 @@ static bool may_do_writes(struct drbd_device *device)
return s.disk == D_UP_TO_DATE || s.pdsk == D_UP_TO_DATE;
}
struct drbd_plug_cb {
struct blk_plug_cb cb;
struct drbd_request *most_recent_req;
/* do we need more? */
};
static void drbd_unplug(struct blk_plug_cb *cb, bool from_schedule)
{
struct drbd_plug_cb *plug = container_of(cb, struct drbd_plug_cb, cb);
struct drbd_resource *resource = plug->cb.data;
struct drbd_request *req = plug->most_recent_req;
kfree(cb);
if (!req)
return;
spin_lock_irq(&resource->req_lock);
/* In case the sender did not process it yet, raise the flag to
* have it followed with P_UNPLUG_REMOTE just after. */
req->rq_state |= RQ_UNPLUG;
/* but also queue a generic unplug */
drbd_queue_unplug(req->device);
kref_put(&req->kref, drbd_req_destroy);
spin_unlock_irq(&resource->req_lock);
}
static struct drbd_plug_cb* drbd_check_plugged(struct drbd_resource *resource)
{
/* A lot of text to say
* return (struct drbd_plug_cb*)blk_check_plugged(); */
struct drbd_plug_cb *plug;
struct blk_plug_cb *cb = blk_check_plugged(drbd_unplug, resource, sizeof(*plug));
if (cb)
plug = container_of(cb, struct drbd_plug_cb, cb);
else
plug = NULL;
return plug;
}
static void drbd_update_plug(struct drbd_plug_cb *plug, struct drbd_request *req)
{
struct drbd_request *tmp = plug->most_recent_req;
/* Will be sent to some peer.
* Remember to tag it with UNPLUG_REMOTE on unplug */
kref_get(&req->kref);
plug->most_recent_req = req;
if (tmp)
kref_put(&tmp->kref, drbd_req_destroy);
}
static void drbd_send_and_submit(struct drbd_device *device, struct drbd_request *req)
{
struct drbd_resource *resource = device->resource;
@ -1347,6 +1402,12 @@ static void drbd_send_and_submit(struct drbd_device *device, struct drbd_request
no_remote = true;
}
if (no_remote == false) {
struct drbd_plug_cb *plug = drbd_check_plugged(resource);
if (plug)
drbd_update_plug(plug, req);
}
/* If it took the fast path in drbd_request_prepare, add it here.
* The slow path has added it already. */
if (list_empty(&req->req_pending_master_completion))
@ -1395,7 +1456,10 @@ void __drbd_make_request(struct drbd_device *device, struct bio *bio, unsigned l
static void submit_fast_path(struct drbd_device *device, struct list_head *incoming)
{
struct blk_plug plug;
struct drbd_request *req, *tmp;
blk_start_plug(&plug);
list_for_each_entry_safe(req, tmp, incoming, tl_requests) {
const int rw = bio_data_dir(req->master_bio);
@ -1413,6 +1477,7 @@ static void submit_fast_path(struct drbd_device *device, struct list_head *incom
list_del_init(&req->tl_requests);
drbd_send_and_submit(device, req);
}
blk_finish_plug(&plug);
}
static bool prepare_al_transaction_nonblock(struct drbd_device *device,
@ -1420,12 +1485,12 @@ static bool prepare_al_transaction_nonblock(struct drbd_device *device,
struct list_head *pending,
struct list_head *later)
{
struct drbd_request *req, *tmp;
struct drbd_request *req;
int wake = 0;
int err;
spin_lock_irq(&device->al_lock);
list_for_each_entry_safe(req, tmp, incoming, tl_requests) {
while ((req = list_first_entry_or_null(incoming, struct drbd_request, tl_requests))) {
err = drbd_al_begin_io_nonblock(device, &req->i);
if (err == -ENOBUFS)
break;
@ -1442,17 +1507,20 @@ static bool prepare_al_transaction_nonblock(struct drbd_device *device,
return !list_empty(pending);
}
void send_and_submit_pending(struct drbd_device *device, struct list_head *pending)
static void send_and_submit_pending(struct drbd_device *device, struct list_head *pending)
{
struct drbd_request *req, *tmp;
struct blk_plug plug;
struct drbd_request *req;
list_for_each_entry_safe(req, tmp, pending, tl_requests) {
blk_start_plug(&plug);
while ((req = list_first_entry_or_null(pending, struct drbd_request, tl_requests))) {
req->rq_state |= RQ_IN_ACT_LOG;
req->in_actlog_jif = jiffies;
atomic_dec(&device->ap_actlog_cnt);
list_del_init(&req->tl_requests);
drbd_send_and_submit(device, req);
}
blk_finish_plug(&plug);
}
void do_submit(struct work_struct *ws)

6
drivers/block/drbd/drbd_req.h
View file

@ -212,6 +212,11 @@ enum drbd_req_state_bits {
/* Should call drbd_al_complete_io() for this request... */
__RQ_IN_ACT_LOG,
/* This was the most recent request during some blk_finish_plug()
* or its implicit from-schedule equivalent.
* We may use it as hint to send a P_UNPLUG_REMOTE */
__RQ_UNPLUG,
/* The peer has sent a retry ACK */
__RQ_POSTPONED,
@ -249,6 +254,7 @@ enum drbd_req_state_bits {
#define RQ_WSAME (1UL << __RQ_WSAME)
#define RQ_UNMAP (1UL << __RQ_UNMAP)
#define RQ_IN_ACT_LOG (1UL << __RQ_IN_ACT_LOG)
#define RQ_UNPLUG (1UL << __RQ_UNPLUG)
#define RQ_POSTPONED (1UL << __RQ_POSTPONED)
#define RQ_COMPLETION_SUSP (1UL << __RQ_COMPLETION_SUSP)
#define RQ_EXP_RECEIVE_ACK (1UL << __RQ_EXP_RECEIVE_ACK)

48
drivers/block/drbd/drbd_state.c
View file

@ -346,7 +346,7 @@ static enum drbd_role min_role(enum drbd_role role1, enum drbd_role role2)
enum drbd_role conn_highest_role(struct drbd_connection *connection)
{
enum drbd_role role = R_UNKNOWN;
enum drbd_role role = R_SECONDARY;
struct drbd_peer_device *peer_device;
int vnr;
@ -579,11 +579,14 @@ drbd_req_state(struct drbd_device *device, union drbd_state mask,
unsigned long flags;
union drbd_state os, ns;
enum drbd_state_rv rv;
void *buffer = NULL;
init_completion(&done);
if (f & CS_SERIALIZE)
mutex_lock(device->state_mutex);
if (f & CS_INHIBIT_MD_IO)
buffer = drbd_md_get_buffer(device, __func__);
spin_lock_irqsave(&device->resource->req_lock, flags);
os = drbd_read_state(device);
@ -636,6 +639,8 @@ drbd_req_state(struct drbd_device *device, union drbd_state mask,
}
abort:
if (buffer)
drbd_md_put_buffer(device);
if (f & CS_SERIALIZE)
mutex_unlock(device->state_mutex);
@ -664,6 +669,47 @@ _drbd_request_state(struct drbd_device *device, union drbd_state mask,
return rv;
}
/*
* We grab drbd_md_get_buffer(), because we don't want to "fail" the disk while
* there is IO in-flight: the transition into D_FAILED for detach purposes
* may get misinterpreted as actual IO error in a confused endio function.
*
* We wrap it all into wait_event(), to retry in case the drbd_req_state()
* returns SS_IN_TRANSIENT_STATE.
*
* To avoid potential deadlock with e.g. the receiver thread trying to grab
* drbd_md_get_buffer() while trying to get out of the "transient state", we
* need to grab and release the meta data buffer inside of that wait_event loop.
*/
static enum drbd_state_rv
request_detach(struct drbd_device *device)
{
return drbd_req_state(device, NS(disk, D_FAILED),
CS_VERBOSE | CS_ORDERED | CS_INHIBIT_MD_IO);
}
enum drbd_state_rv
drbd_request_detach_interruptible(struct drbd_device *device)
{
enum drbd_state_rv rv;
int ret;
drbd_suspend_io(device); /* so no-one is stuck in drbd_al_begin_io */
wait_event_interruptible(device->state_wait,
(rv = request_detach(device)) != SS_IN_TRANSIENT_STATE);
drbd_resume_io(device);
ret = wait_event_interruptible(device->misc_wait,
device->state.disk != D_FAILED);
if (rv == SS_IS_DISKLESS)
rv = SS_NOTHING_TO_DO;
if (ret)
rv = ERR_INTR;
return rv;
}
enum drbd_state_rv
_drbd_request_state_holding_state_mutex(struct drbd_device *device, union drbd_state mask,
union drbd_state val, enum chg_state_flags f)

8
drivers/block/drbd/drbd_state.h
View file

@ -71,6 +71,10 @@ enum chg_state_flags {
CS_DC_SUSP = 1 << 10,
CS_DC_MASK = CS_DC_ROLE + CS_DC_PEER + CS_DC_CONN + CS_DC_DISK + CS_DC_PDSK,
CS_IGN_OUTD_FAIL = 1 << 11,
/* Make sure no meta data IO is in flight, by calling
* drbd_md_get_buffer(). Used for graceful detach. */
CS_INHIBIT_MD_IO = 1 << 12,
};
/* drbd_dev_state and drbd_state are different types. This is to stress the
@ -156,6 +160,10 @@ static inline int drbd_request_state(struct drbd_device *device,
return _drbd_request_state(device, mask, val, CS_VERBOSE + CS_ORDERED);
}
/* for use in adm_detach() (drbd_adm_detach(), drbd_adm_down()) */
enum drbd_state_rv
drbd_request_detach_interruptible(struct drbd_device *device);
enum drbd_role conn_highest_role(struct drbd_connection *connection);
enum drbd_role conn_highest_peer(struct drbd_connection *connection);
enum drbd_disk_state conn_highest_disk(struct drbd_connection *connection);

48
drivers/block/drbd/drbd_worker.c
View file

@ -65,6 +65,11 @@ void drbd_md_endio(struct bio *bio)
device = bio->bi_private;
device->md_io.error = blk_status_to_errno(bio->bi_status);
/* special case: drbd_md_read() during drbd_adm_attach() */
if (device->ldev)
put_ldev(device);
bio_put(bio);
/* We grabbed an extra reference in _drbd_md_sync_page_io() to be able
* to timeout on the lower level device, and eventually detach from it.
* If this io completion runs after that timeout expired, this
@ -79,9 +84,6 @@ void drbd_md_endio(struct bio *bio)
drbd_md_put_buffer(device);
device->md_io.done = 1;
wake_up(&device->misc_wait);
bio_put(bio);
if (device->ldev) /* special case: drbd_md_read() during drbd_adm_attach() */
put_ldev(device);
}
/* reads on behalf of the partner,
@ -128,6 +130,14 @@ void drbd_endio_write_sec_final(struct drbd_peer_request *peer_req) __releases(l
block_id = peer_req->block_id;
peer_req->flags &= ~EE_CALL_AL_COMPLETE_IO;
if (peer_req->flags & EE_WAS_ERROR) {
/* In protocol != C, we usually do not send write acks.
* In case of a write error, send the neg ack anyways. */
if (!__test_and_set_bit(__EE_SEND_WRITE_ACK, &peer_req->flags))
inc_unacked(device);
drbd_set_out_of_sync(device, peer_req->i.sector, peer_req->i.size);
}
spin_lock_irqsave(&device->resource->req_lock, flags);
device->writ_cnt += peer_req->i.size >> 9;
list_move_tail(&peer_req->w.list, &device->done_ee);
@ -195,7 +205,8 @@ void drbd_peer_request_endio(struct bio *bio)
}
}
void drbd_panic_after_delayed_completion_of_aborted_request(struct drbd_device *device)
static void
drbd_panic_after_delayed_completion_of_aborted_request(struct drbd_device *device)
{
panic("drbd%u %s/%u potential random memory corruption caused by delayed completion of aborted local request\n",
device->minor, device->resource->name, device->vnr);
@ -1382,18 +1393,22 @@ static int drbd_send_barrier(struct drbd_connection *connection)
return conn_send_command(connection, sock, P_BARRIER, sizeof(*p), NULL, 0);
}
static int pd_send_unplug_remote(struct drbd_peer_device *pd)
{
struct drbd_socket *sock = &pd->connection->data;
if (!drbd_prepare_command(pd, sock))
return -EIO;
return drbd_send_command(pd, sock, P_UNPLUG_REMOTE, 0, NULL, 0);
}
int w_send_write_hint(struct drbd_work *w, int cancel)
{
struct drbd_device *device =
container_of(w, struct drbd_device, unplug_work);
struct drbd_socket *sock;
if (cancel)
return 0;
sock = &first_peer_device(device)->connection->data;
if (!drbd_prepare_command(first_peer_device(device), sock))
return -EIO;
return drbd_send_command(first_peer_device(device), sock, P_UNPLUG_REMOTE, 0, NULL, 0);
return pd_send_unplug_remote(first_peer_device(device));
}
static void re_init_if_first_write(struct drbd_connection *connection, unsigned int epoch)
@ -1455,6 +1470,7 @@ int w_send_dblock(struct drbd_work *w, int cancel)
struct drbd_device *device = req->device;
struct drbd_peer_device *const peer_device = first_peer_device(device);
struct drbd_connection *connection = peer_device->connection;
bool do_send_unplug = req->rq_state & RQ_UNPLUG;
int err;
if (unlikely(cancel)) {
@ -1470,6 +1486,9 @@ int w_send_dblock(struct drbd_work *w, int cancel)
err = drbd_send_dblock(peer_device, req);
req_mod(req, err ? SEND_FAILED : HANDED_OVER_TO_NETWORK);
if (do_send_unplug && !err)
pd_send_unplug_remote(peer_device);
return err;
}
@ -1484,6 +1503,7 @@ int w_send_read_req(struct drbd_work *w, int cancel)
struct drbd_device *device = req->device;
struct drbd_peer_device *const peer_device = first_peer_device(device);
struct drbd_connection *connection = peer_device->connection;
bool do_send_unplug = req->rq_state & RQ_UNPLUG;
int err;
if (unlikely(cancel)) {
@ -1501,6 +1521,9 @@ int w_send_read_req(struct drbd_work *w, int cancel)
req_mod(req, err ? SEND_FAILED : HANDED_OVER_TO_NETWORK);
if (do_send_unplug && !err)
pd_send_unplug_remote(peer_device);
return err;
}
@ -1513,7 +1536,7 @@ int w_restart_disk_io(struct drbd_work *w, int cancel)
drbd_al_begin_io(device, &req->i);
drbd_req_make_private_bio(req, req->master_bio);
req->private_bio->bi_bdev = device->ldev->backing_bdev;
bio_set_dev(req->private_bio, device->ldev->backing_bdev);
generic_make_request(req->private_bio);
return 0;
@ -1733,6 +1756,11 @@ void drbd_start_resync(struct drbd_device *device, enum drbd_conns side)
return;
}
if (!connection) {
drbd_err(device, "No connection to peer, aborting!\n");
return;
}
if (!test_bit(B_RS_H_DONE, &device->flags)) {
if (side == C_SYNC_TARGET) {
/* Since application IO was locked out during C_WF_BITMAP_T and

2
drivers/block/floppy.c
View file

@ -4134,7 +4134,7 @@ static int __floppy_read_block_0(struct block_device *bdev, int drive)
cbdata.drive = drive;
bio_init(&bio, &bio_vec, 1);
bio.bi_bdev = bdev;
bio_set_dev(&bio, bdev);
bio_add_page(&bio, page, size, 0);
bio.bi_iter.bi_sector = 0;

14
drivers/block/loop.c
View file

@ -1966,10 +1966,6 @@ static int __init loop_init(void)
struct loop_device *lo;
int err;
err = misc_register(&loop_misc);
if (err < 0)
return err;
part_shift = 0;
if (max_part > 0) {
part_shift = fls(max_part);
@ -1987,12 +1983,12 @@ static int __init loop_init(void)
if ((1UL << part_shift) > DISK_MAX_PARTS) {
err = -EINVAL;
goto misc_out;
goto err_out;
}
if (max_loop > 1UL << (MINORBITS - part_shift)) {
err = -EINVAL;
goto misc_out;
goto err_out;
}
/*
@ -2011,6 +2007,11 @@ static int __init loop_init(void)
range = 1UL << MINORBITS;
}
err = misc_register(&loop_misc);
if (err < 0)
goto err_out;
if (register_blkdev(LOOP_MAJOR, "loop")) {
err = -EIO;
goto misc_out;
@ -2030,6 +2031,7 @@ static int __init loop_init(void)
misc_out:
misc_deregister(&loop_misc);
err_out:
return err;
}

15
drivers/block/nbd.c
View file

@ -128,7 +128,7 @@ static struct dentry *nbd_dbg_dir;
#define NBD_MAGIC 0x68797548
static unsigned int nbds_max = 16;
static int max_part;
static int max_part = 16;
static struct workqueue_struct *recv_workqueue;
static int part_shift;
@ -165,7 +165,7 @@ static ssize_t pid_show(struct device *dev,
return sprintf(buf, "%d\n", task_pid_nr(nbd->task_recv));
}
static struct device_attribute pid_attr = {
static const struct device_attribute pid_attr = {
.attr = { .name = "pid", .mode = S_IRUGO},
.show = pid_show,
};
@ -1584,6 +1584,15 @@ again:
}
} else {
nbd = idr_find(&nbd_index_idr, index);
if (!nbd) {
ret = nbd_dev_add(index);
if (ret < 0) {
mutex_unlock(&nbd_index_mutex);
printk(KERN_ERR "nbd: failed to add new device\n");
return ret;
}
nbd = idr_find(&nbd_index_idr, index);
}
}
if (!nbd) {
printk(KERN_ERR "nbd: couldn't find device at index %d\n",
@ -2137,4 +2146,4 @@ MODULE_LICENSE("GPL");
module_param(nbds_max, int, 0444);
MODULE_PARM_DESC(nbds_max, "number of network block devices to initialize (default: 16)");
module_param(max_part, int, 0444);
MODULE_PARM_DESC(max_part, "number of partitions per device (default: 0)");
MODULE_PARM_DESC(max_part, "number of partitions per device (default: 16)");

1309
drivers/block/null_blk.c
View file

File diff suppressed because it is too large Load diff

11
drivers/block/pktcdvd.c
View file

@ -1028,7 +1028,7 @@ static void pkt_gather_data(struct pktcdvd_device *pd, struct packet_data *pkt)
bio = pkt->r_bios[f];
bio_reset(bio);
bio->bi_iter.bi_sector = pkt->sector + f * (CD_FRAMESIZE >> 9);
bio->bi_bdev = pd->bdev;
bio_set_dev(bio, pd->bdev);
bio->bi_end_io = pkt_end_io_read;
bio->bi_private = pkt;
@ -1122,7 +1122,7 @@ static int pkt_start_recovery(struct packet_data *pkt)
pkt->sector = new_sector;
bio_reset(pkt->bio);
pkt->bio->bi_bdev = pd->bdev;
bio_set_set(pkt->bio, pd->bdev);
bio_set_op_attrs(pkt->bio, REQ_OP_WRITE, 0);
pkt->bio->bi_iter.bi_sector = new_sector;
pkt->bio->bi_iter.bi_size = pkt->frames * CD_FRAMESIZE;
@ -1267,7 +1267,7 @@ static void pkt_start_write(struct pktcdvd_device *pd, struct packet_data *pkt)
bio_reset(pkt->w_bio);
pkt->w_bio->bi_iter.bi_sector = pkt->sector;
pkt->w_bio->bi_bdev = pd->bdev;
bio_set_dev(pkt->w_bio, pd->bdev);
pkt->w_bio->bi_end_io = pkt_end_io_packet_write;
pkt->w_bio->bi_private = pkt;
@ -2314,7 +2314,7 @@ static void pkt_make_request_read(struct pktcdvd_device *pd, struct bio *bio)
psd->pd = pd;
psd->bio = bio;
cloned_bio->bi_bdev = pd->bdev;
bio_set_dev(cloned_bio, pd->bdev);
cloned_bio->bi_private = psd;
cloned_bio->bi_end_io = pkt_end_io_read_cloned;
pd->stats.secs_r += bio_sectors(bio);
@ -2415,8 +2415,7 @@ static blk_qc_t pkt_make_request(struct request_queue *q, struct bio *bio)
pd = q->queuedata;
if (!pd) {
pr_err("%s incorrect request queue\n",
bdevname(bio->bi_bdev, b));
pr_err("%s incorrect request queue\n", bio_devname(bio, b));
goto end_io;
}

6
drivers/block/rsxx/dev.c
View file

@ -112,7 +112,7 @@ static const struct block_device_operations rsxx_fops = {
static void disk_stats_start(struct rsxx_cardinfo *card, struct bio *bio)
{
generic_start_io_acct(bio_data_dir(bio), bio_sectors(bio),
generic_start_io_acct(card->queue, bio_data_dir(bio), bio_sectors(bio),
&card->gendisk->part0);
}
@ -120,8 +120,8 @@ static void disk_stats_complete(struct rsxx_cardinfo *card,
struct bio *bio,
unsigned long start_time)
{
generic_end_io_acct(bio_data_dir(bio), &card->gendisk->part0,
start_time);
generic_end_io_acct(card->queue, bio_data_dir(bio),
&card->gendisk->part0, start_time);
}
static void bio_dma_done_cb(struct rsxx_cardinfo *card,

3288
drivers/block/skd_main.c
View file

File diff suppressed because it is too large Load diff

38
drivers/block/skd_s1120.h
View file

@ -1,19 +1,15 @@
/* Copyright 2012 STEC, Inc.
/*
* Copyright 2012 STEC, Inc.
* Copyright (c) 2017 Western Digital Corporation or its affiliates.
*
* This file is licensed under the terms of the 3-clause
* BSD License (http://opensource.org/licenses/BSD-3-Clause)
* or the GNU GPL-2.0 (http://www.gnu.org/licenses/gpl-2.0.html),
* at your option. Both licenses are also available in the LICENSE file
* distributed with this project. This file may not be copied, modified,
* or distributed except in accordance with those terms.
* This file is part of the Linux kernel, and is made available under
* the terms of the GNU General Public License version 2.
*/
#ifndef SKD_S1120_H
#define SKD_S1120_H
#pragma pack(push, s1120_h, 1)
/*
* Q-channel, 64-bit r/w
*/
@ -30,7 +26,7 @@
#define FIT_QCMD_MSGSIZE_128 (0x1 << 4)
#define FIT_QCMD_MSGSIZE_256 (0x2 << 4)
#define FIT_QCMD_MSGSIZE_512 (0x3 << 4)
#define FIT_QCMD_BASE_ADDRESS_MASK (0xFFFFFFFFFFFFFFC0ull)
#define FIT_QCMD_ALIGN L1_CACHE_BYTES
/*
* Control, 32-bit r/w
@ -250,7 +246,7 @@ struct fit_msg_hdr {
* 20-23 of the FIT_MTD_FITFW_INIT response.
*/
struct fit_completion_entry_v1 {
uint32_t num_returned_bytes;
__be32 num_returned_bytes;
uint16_t tag;
uint8_t status; /* SCSI status */
uint8_t cycle;
@ -278,7 +274,7 @@ struct fit_comp_error_info {
uint16_t sks_low; /* 10: Sense Key Specific (LSW) */
uint16_t reserved3; /* 12: Part of additional sense bytes (unused) */
uint16_t uec; /* 14: Additional Sense Bytes */
uint64_t per; /* 16: Additional Sense Bytes */
uint64_t per __packed; /* 16: Additional Sense Bytes */
uint8_t reserved4[2]; /* 1E: Additional Sense Bytes (unused) */
};
@ -292,11 +288,11 @@ struct fit_comp_error_info {
* Version one has the last 32 bits sg_list_len_bytes;
*/
struct skd_command_header {
uint64_t sg_list_dma_address;
__be64 sg_list_dma_address;
uint16_t tag;
uint8_t attribute;
uint8_t add_cdb_len; /* In 32 bit words */
uint32_t sg_list_len_bytes;
__be32 sg_list_len_bytes;
};
struct skd_scsi_request {
@ -309,22 +305,20 @@ struct driver_inquiry_data {
uint8_t peripheral_device_type:5;
uint8_t qualifier:3;
uint8_t page_code;
uint16_t page_length;
uint16_t pcie_bus_number;
__be16 page_length;
__be16 pcie_bus_number;
uint8_t pcie_device_number;
uint8_t pcie_function_number;
uint8_t pcie_link_speed;
uint8_t pcie_link_lanes;
uint16_t pcie_vendor_id;
uint16_t pcie_device_id;
uint16_t pcie_subsystem_vendor_id;
uint16_t pcie_subsystem_device_id;
__be16 pcie_vendor_id;
__be16 pcie_device_id;
__be16 pcie_subsystem_vendor_id;
__be16 pcie_subsystem_device_id;
uint8_t reserved1[2];
uint8_t reserved2[3];
uint8_t driver_version_length;
uint8_t driver_version[0x14];
};
#pragma pack(pop, s1120_h)
#endif /* SKD_S1120_H */

2
drivers/block/virtio_blk.c
View file

@ -265,7 +265,7 @@ static blk_status_t virtio_queue_rq(struct blk_mq_hw_ctx *hctx,
}
spin_lock_irqsave(&vblk->vqs[qid].lock, flags);
if (req_op(req) == REQ_OP_SCSI_IN || req_op(req) == REQ_OP_SCSI_OUT)
if (blk_rq_is_scsi(req))
err = virtblk_add_req_scsi(vblk->vqs[qid].vq, vbr, vbr->sg, num);
else
err = virtblk_add_req(vblk->vqs[qid].vq, vbr, vbr->sg, num);

9
drivers/block/xen-blkback/blkback.c
View file

@ -705,9 +705,9 @@ static unsigned int xen_blkbk_unmap_prepare(
GNTMAP_host_map, pages[i]->handle);
pages[i]->handle = BLKBACK_INVALID_HANDLE;
invcount++;
}
}
return invcount;
return invcount;
}
static void xen_blkbk_unmap_and_respond_callback(int result, struct gntab_unmap_queue_data *data)
@ -1251,6 +1251,7 @@ static int dispatch_rw_block_io(struct xen_blkif_ring *ring,
break;
case BLKIF_OP_WRITE_BARRIER:
drain = true;
/* fall through */
case BLKIF_OP_FLUSH_DISKCACHE:
ring->st_f_req++;
operation = REQ_OP_WRITE;
@ -1362,7 +1363,7 @@ static int dispatch_rw_block_io(struct xen_blkif_ring *ring,
goto fail_put_bio;
biolist[nbio++] = bio;
bio->bi_bdev = preq.bdev;
bio_set_dev(bio, preq.bdev);
bio->bi_private = pending_req;
bio->bi_end_io = end_block_io_op;
bio->bi_iter.bi_sector = preq.sector_number;
@ -1381,7 +1382,7 @@ static int dispatch_rw_block_io(struct xen_blkif_ring *ring,
goto fail_put_bio;
biolist[nbio++] = bio;
bio->bi_bdev = preq.bdev;
bio_set_dev(bio, preq.bdev);
bio->bi_private = pending_req;
bio->bi_end_io = end_block_io_op;
bio_set_op_attrs(bio, operation, operation_flags);

3
drivers/block/xen-blkback/xenbus.c
View file

@ -816,7 +816,8 @@ static void frontend_changed(struct xenbus_device *dev,
xenbus_switch_state(dev, XenbusStateClosed);
if (xenbus_dev_is_online(dev))
break;
/* fall through if not online */
/* fall through */
/* if not online */
case XenbusStateUnknown:
/* implies xen_blkif_disconnect() via xen_blkbk_remove() */
device_unregister(&dev->dev);

2
drivers/block/xen-blkfront.c
View file

@ -2456,7 +2456,7 @@ static void blkback_changed(struct xenbus_device *dev,
case XenbusStateClosed:
if (dev->state == XenbusStateClosed)
break;
/* Missed the backend's Closing state -- fallthrough */
/* fall through */
case XenbusStateClosing:
if (info)
blkfront_closing(info);

9
drivers/block/zram/zram_drv.c
View file

@ -467,7 +467,7 @@ static int read_from_bdev_async(struct zram *zram, struct bio_vec *bvec,
return -ENOMEM;
bio->bi_iter.bi_sector = entry * (PAGE_SIZE >> 9);
bio->bi_bdev = zram->bdev;
bio_set_dev(bio, zram->bdev);
if (!bio_add_page(bio, bvec->bv_page, bvec->bv_len, bvec->bv_offset)) {
bio_put(bio);
return -EIO;
@ -561,7 +561,7 @@ static int write_to_bdev(struct zram *zram, struct bio_vec *bvec,
}
bio->bi_iter.bi_sector = entry * (PAGE_SIZE >> 9);
bio->bi_bdev = zram->bdev;
bio_set_dev(bio, zram->bdev);
if (!bio_add_page(bio, bvec->bv_page, bvec->bv_len,
bvec->bv_offset)) {
bio_put(bio);
@ -1171,9 +1171,10 @@ static int zram_bvec_rw(struct zram *zram, struct bio_vec *bvec, u32 index,
{
unsigned long start_time = jiffies;
int rw_acct = is_write ? REQ_OP_WRITE : REQ_OP_READ;
struct request_queue *q = zram->disk->queue;
int ret;
generic_start_io_acct(rw_acct, bvec->bv_len >> SECTOR_SHIFT,
generic_start_io_acct(q, rw_acct, bvec->bv_len >> SECTOR_SHIFT,
&zram->disk->part0);
if (!is_write) {
@ -1185,7 +1186,7 @@ static int zram_bvec_rw(struct zram *zram, struct bio_vec *bvec, u32 index,
ret = zram_bvec_write(zram, bvec, index, offset, bio);
}
generic_end_io_acct(rw_acct, &zram->disk->part0, start_time);
generic_end_io_acct(q, rw_acct, &zram->disk->part0, start_time);
if (unlikely(ret < 0)) {
if (!is_write)