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-rw-r--r--drivers/block/amiflop.c84
-rw-r--r--drivers/block/drbd/drbd_main.c1
-rw-r--r--drivers/block/drbd/drbd_nl.c43
-rw-r--r--drivers/block/drbd/drbd_receiver.c66
-rw-r--r--drivers/block/drbd/drbd_state.c6
-rw-r--r--drivers/block/drbd/drbd_state.h5
-rw-r--r--drivers/block/floppy.c38
-rw-r--r--drivers/block/loop.c3
-rw-r--r--drivers/block/nbd.c104
-rw-r--r--drivers/block/pktcdvd.c1
-rw-r--r--drivers/block/rsxx/core.c2
-rw-r--r--drivers/block/skd_main.c4
-rw-r--r--drivers/block/xen-blkback/xenbus.c6
-rw-r--r--drivers/block/zram/zram_drv.c5
14 files changed, 264 insertions, 104 deletions
diff --git a/drivers/block/amiflop.c b/drivers/block/amiflop.c
index 49908c74bfcb..b0e8d8364876 100644
--- a/drivers/block/amiflop.c
+++ b/drivers/block/amiflop.c
@@ -1699,11 +1699,41 @@ static const struct block_device_operations floppy_fops = {
.check_events = amiga_check_events,
};
+static struct gendisk *fd_alloc_disk(int drive)
+{
+ struct gendisk *disk;
+
+ disk = alloc_disk(1);
+ if (!disk)
+ goto out;
+
+ disk->queue = blk_init_queue(do_fd_request, &amiflop_lock);
+ if (IS_ERR(disk->queue)) {
+ disk->queue = NULL;
+ goto out_put_disk;
+ }
+
+ unit[drive].trackbuf = kmalloc(FLOPPY_MAX_SECTORS * 512, GFP_KERNEL);
+ if (!unit[drive].trackbuf)
+ goto out_cleanup_queue;
+
+ return disk;
+
+out_cleanup_queue:
+ blk_cleanup_queue(disk->queue);
+ disk->queue = NULL;
+out_put_disk:
+ put_disk(disk);
+out:
+ unit[drive].type->code = FD_NODRIVE;
+ return NULL;
+}
+
static int __init fd_probe_drives(void)
{
int drive,drives,nomem;
- printk(KERN_INFO "FD: probing units\nfound ");
+ pr_info("FD: probing units\nfound");
drives=0;
nomem=0;
for(drive=0;drive<FD_MAX_UNITS;drive++) {
@@ -1711,27 +1741,17 @@ static int __init fd_probe_drives(void)
fd_probe(drive);
if (unit[drive].type->code == FD_NODRIVE)
continue;
- disk = alloc_disk(1);
+
+ disk = fd_alloc_disk(drive);
if (!disk) {
- unit[drive].type->code = FD_NODRIVE;
+ pr_cont(" no mem for fd%d", drive);
+ nomem = 1;
continue;
}
unit[drive].gendisk = disk;
-
- disk->queue = blk_init_queue(do_fd_request, &amiflop_lock);
- if (!disk->queue) {
- unit[drive].type->code = FD_NODRIVE;
- continue;
- }
-
drives++;
- if ((unit[drive].trackbuf = kmalloc(FLOPPY_MAX_SECTORS * 512, GFP_KERNEL)) == NULL) {
- printk("no mem for ");
- unit[drive].type = &drive_types[num_dr_types - 1]; /* FD_NODRIVE */
- drives--;
- nomem = 1;
- }
- printk("fd%d ",drive);
+
+ pr_cont(" fd%d",drive);
disk->major = FLOPPY_MAJOR;
disk->first_minor = drive;
disk->fops = &floppy_fops;
@@ -1742,11 +1762,11 @@ static int __init fd_probe_drives(void)
}
if ((drives > 0) || (nomem == 0)) {
if (drives == 0)
- printk("no drives");
- printk("\n");
+ pr_cont(" no drives");
+ pr_cont("\n");
return drives;
}
- printk("\n");
+ pr_cont("\n");
return -ENOMEM;
}
@@ -1837,30 +1857,6 @@ out_blkdev:
return ret;
}
-#if 0 /* not safe to unload */
-static int __exit amiga_floppy_remove(struct platform_device *pdev)
-{
- int i;
-
- for( i = 0; i < FD_MAX_UNITS; i++) {
- if (unit[i].type->code != FD_NODRIVE) {
- struct request_queue *q = unit[i].gendisk->queue;
- del_gendisk(unit[i].gendisk);
- put_disk(unit[i].gendisk);
- kfree(unit[i].trackbuf);
- if (q)
- blk_cleanup_queue(q);
- }
- }
- blk_unregister_region(MKDEV(FLOPPY_MAJOR, 0), 256);
- free_irq(IRQ_AMIGA_CIAA_TB, NULL);
- free_irq(IRQ_AMIGA_DSKBLK, NULL);
- custom.dmacon = DMAF_DISK; /* disable DMA */
- amiga_chip_free(raw_buf);
- unregister_blkdev(FLOPPY_MAJOR, "fd");
-}
-#endif
-
static struct platform_driver amiga_floppy_driver = {
.driver = {
.name = "amiga-floppy",
diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c
index 8cb3791898ae..7ea13b5497fd 100644
--- a/drivers/block/drbd/drbd_main.c
+++ b/drivers/block/drbd/drbd_main.c
@@ -795,7 +795,6 @@ int __drbd_send_protocol(struct drbd_connection *connection, enum drbd_packet cm
if (nc->tentative && connection->agreed_pro_version < 92) {
rcu_read_unlock();
- mutex_unlock(&sock->mutex);
drbd_err(connection, "--dry-run is not supported by peer");
return -EOPNOTSUPP;
}
diff --git a/drivers/block/drbd/drbd_nl.c b/drivers/block/drbd/drbd_nl.c
index ad13ec66c8e4..31d7fe4480af 100644
--- a/drivers/block/drbd/drbd_nl.c
+++ b/drivers/block/drbd/drbd_nl.c
@@ -1515,6 +1515,30 @@ static void sanitize_disk_conf(struct drbd_device *device, struct disk_conf *dis
}
}
+static int disk_opts_check_al_size(struct drbd_device *device, struct disk_conf *dc)
+{
+ int err = -EBUSY;
+
+ if (device->act_log &&
+ device->act_log->nr_elements == dc->al_extents)
+ return 0;
+
+ drbd_suspend_io(device);
+ /* If IO completion is currently blocked, we would likely wait
+ * "forever" for the activity log to become unused. So we don't. */
+ if (atomic_read(&device->ap_bio_cnt))
+ goto out;
+
+ wait_event(device->al_wait, lc_try_lock(device->act_log));
+ drbd_al_shrink(device);
+ err = drbd_check_al_size(device, dc);
+ lc_unlock(device->act_log);
+ wake_up(&device->al_wait);
+out:
+ drbd_resume_io(device);
+ return err;
+}
+
int drbd_adm_disk_opts(struct sk_buff *skb, struct genl_info *info)
{
struct drbd_config_context adm_ctx;
@@ -1577,15 +1601,12 @@ int drbd_adm_disk_opts(struct sk_buff *skb, struct genl_info *info)
}
}
- drbd_suspend_io(device);
- wait_event(device->al_wait, lc_try_lock(device->act_log));
- drbd_al_shrink(device);
- err = drbd_check_al_size(device, new_disk_conf);
- lc_unlock(device->act_log);
- wake_up(&device->al_wait);
- drbd_resume_io(device);
-
+ err = disk_opts_check_al_size(device, new_disk_conf);
if (err) {
+ /* Could be just "busy". Ignore?
+ * Introduce dedicated error code? */
+ drbd_msg_put_info(adm_ctx.reply_skb,
+ "Try again without changing current al-extents setting");
retcode = ERR_NOMEM;
goto fail_unlock;
}
@@ -1935,9 +1956,9 @@ int drbd_adm_attach(struct sk_buff *skb, struct genl_info *info)
}
}
- if (device->state.conn < C_CONNECTED &&
- device->state.role == R_PRIMARY && device->ed_uuid &&
- (device->ed_uuid & ~((u64)1)) != (nbc->md.uuid[UI_CURRENT] & ~((u64)1))) {
+ if (device->state.pdsk != D_UP_TO_DATE && device->ed_uuid &&
+ (device->state.role == R_PRIMARY || device->state.peer == R_PRIMARY) &&
+ (device->ed_uuid & ~((u64)1)) != (nbc->md.uuid[UI_CURRENT] & ~((u64)1))) {
drbd_err(device, "Can only attach to data with current UUID=%016llX\n",
(unsigned long long)device->ed_uuid);
retcode = ERR_DATA_NOT_CURRENT;
diff --git a/drivers/block/drbd/drbd_receiver.c b/drivers/block/drbd/drbd_receiver.c
index 1aad373da50e..a7c180426c60 100644
--- a/drivers/block/drbd/drbd_receiver.c
+++ b/drivers/block/drbd/drbd_receiver.c
@@ -3977,6 +3977,7 @@ static int receive_sizes(struct drbd_connection *connection, struct packet_info
struct o_qlim *o = (connection->agreed_features & DRBD_FF_WSAME) ? p->qlim : NULL;
enum determine_dev_size dd = DS_UNCHANGED;
sector_t p_size, p_usize, p_csize, my_usize;
+ sector_t new_size, cur_size;
int ldsc = 0; /* local disk size changed */
enum dds_flags ddsf;
@@ -3984,6 +3985,7 @@ static int receive_sizes(struct drbd_connection *connection, struct packet_info
if (!peer_device)
return config_unknown_volume(connection, pi);
device = peer_device->device;
+ cur_size = drbd_get_capacity(device->this_bdev);
p_size = be64_to_cpu(p->d_size);
p_usize = be64_to_cpu(p->u_size);
@@ -3994,7 +3996,6 @@ static int receive_sizes(struct drbd_connection *connection, struct packet_info
device->p_size = p_size;
if (get_ldev(device)) {
- sector_t new_size, cur_size;
rcu_read_lock();
my_usize = rcu_dereference(device->ldev->disk_conf)->disk_size;
rcu_read_unlock();
@@ -4012,7 +4013,6 @@ static int receive_sizes(struct drbd_connection *connection, struct packet_info
/* Never shrink a device with usable data during connect.
But allow online shrinking if we are connected. */
new_size = drbd_new_dev_size(device, device->ldev, p_usize, 0);
- cur_size = drbd_get_capacity(device->this_bdev);
if (new_size < cur_size &&
device->state.disk >= D_OUTDATED &&
device->state.conn < C_CONNECTED) {
@@ -4077,9 +4077,36 @@ static int receive_sizes(struct drbd_connection *connection, struct packet_info
*
* However, if he sends a zero current size,
* take his (user-capped or) backing disk size anyways.
+ *
+ * Unless of course he does not have a disk himself.
+ * In which case we ignore this completely.
*/
+ sector_t new_size = p_csize ?: p_usize ?: p_size;
drbd_reconsider_queue_parameters(device, NULL, o);
- drbd_set_my_capacity(device, p_csize ?: p_usize ?: p_size);
+ if (new_size == 0) {
+ /* Ignore, peer does not know nothing. */
+ } else if (new_size == cur_size) {
+ /* nothing to do */
+ } else if (cur_size != 0 && p_size == 0) {
+ drbd_warn(device, "Ignored diskless peer device size (peer:%llu != me:%llu sectors)!\n",
+ (unsigned long long)new_size, (unsigned long long)cur_size);
+ } else if (new_size < cur_size && device->state.role == R_PRIMARY) {
+ drbd_err(device, "The peer's device size is too small! (%llu < %llu sectors); demote me first!\n",
+ (unsigned long long)new_size, (unsigned long long)cur_size);
+ conn_request_state(peer_device->connection, NS(conn, C_DISCONNECTING), CS_HARD);
+ return -EIO;
+ } else {
+ /* I believe the peer, if
+ * - I don't have a current size myself
+ * - we agree on the size anyways
+ * - I do have a current size, am Secondary,
+ * and he has the only disk
+ * - I do have a current size, am Primary,
+ * and he has the only disk,
+ * which is larger than my current size
+ */
+ drbd_set_my_capacity(device, new_size);
+ }
}
if (get_ldev(device)) {
@@ -4365,6 +4392,25 @@ static int receive_state(struct drbd_connection *connection, struct packet_info
if (peer_state.conn == C_AHEAD)
ns.conn = C_BEHIND;
+ /* TODO:
+ * if (primary and diskless and peer uuid != effective uuid)
+ * abort attach on peer;
+ *
+ * If this node does not have good data, was already connected, but
+ * the peer did a late attach only now, trying to "negotiate" with me,
+ * AND I am currently Primary, possibly frozen, with some specific
+ * "effective" uuid, this should never be reached, really, because
+ * we first send the uuids, then the current state.
+ *
+ * In this scenario, we already dropped the connection hard
+ * when we received the unsuitable uuids (receive_uuids().
+ *
+ * Should we want to change this, that is: not drop the connection in
+ * receive_uuids() already, then we would need to add a branch here
+ * that aborts the attach of "unsuitable uuids" on the peer in case
+ * this node is currently Diskless Primary.
+ */
+
if (device->p_uuid && peer_state.disk >= D_NEGOTIATING &&
get_ldev_if_state(device, D_NEGOTIATING)) {
int cr; /* consider resync */
@@ -5237,7 +5283,7 @@ static int drbd_do_auth(struct drbd_connection *connection)
unsigned int key_len;
char secret[SHARED_SECRET_MAX]; /* 64 byte */
unsigned int resp_size;
- SHASH_DESC_ON_STACK(desc, connection->cram_hmac_tfm);
+ struct shash_desc *desc;
struct packet_info pi;
struct net_conf *nc;
int err, rv;
@@ -5250,6 +5296,13 @@ static int drbd_do_auth(struct drbd_connection *connection)
memcpy(secret, nc->shared_secret, key_len);
rcu_read_unlock();
+ desc = kmalloc(sizeof(struct shash_desc) +
+ crypto_shash_descsize(connection->cram_hmac_tfm),
+ GFP_KERNEL);
+ if (!desc) {
+ rv = -1;
+ goto fail;
+ }
desc->tfm = connection->cram_hmac_tfm;
desc->flags = 0;
@@ -5392,7 +5445,10 @@ static int drbd_do_auth(struct drbd_connection *connection)
kfree(peers_ch);
kfree(response);
kfree(right_response);
- shash_desc_zero(desc);
+ if (desc) {
+ shash_desc_zero(desc);
+ kfree(desc);
+ }
return rv;
}
diff --git a/drivers/block/drbd/drbd_state.c b/drivers/block/drbd/drbd_state.c
index 0813c654c893..b452359b6aae 100644
--- a/drivers/block/drbd/drbd_state.c
+++ b/drivers/block/drbd/drbd_state.c
@@ -688,11 +688,9 @@ request_detach(struct drbd_device *device)
CS_VERBOSE | CS_ORDERED | CS_INHIBIT_MD_IO);
}
-enum drbd_state_rv
-drbd_request_detach_interruptible(struct drbd_device *device)
+int drbd_request_detach_interruptible(struct drbd_device *device)
{
- enum drbd_state_rv rv;
- int ret;
+ int ret, rv;
drbd_suspend_io(device); /* so no-one is stuck in drbd_al_begin_io */
wait_event_interruptible(device->state_wait,
diff --git a/drivers/block/drbd/drbd_state.h b/drivers/block/drbd/drbd_state.h
index ea58301d0895..f87371e55e68 100644
--- a/drivers/block/drbd/drbd_state.h
+++ b/drivers/block/drbd/drbd_state.h
@@ -131,7 +131,7 @@ extern enum drbd_state_rv _drbd_set_state(struct drbd_device *, union drbd_state
enum chg_state_flags,
struct completion *done);
extern void print_st_err(struct drbd_device *, union drbd_state,
- union drbd_state, int);
+ union drbd_state, enum drbd_state_rv);
enum drbd_state_rv
_conn_request_state(struct drbd_connection *connection, union drbd_state mask, union drbd_state val,
@@ -162,8 +162,7 @@ static inline int drbd_request_state(struct drbd_device *device,
}
/* for use in adm_detach() (drbd_adm_detach(), drbd_adm_down()) */
-enum drbd_state_rv
-drbd_request_detach_interruptible(struct drbd_device *device);
+int 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);
diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c
index 3ea9c3e9acb3..5f1aa3197244 100644
--- a/drivers/block/floppy.c
+++ b/drivers/block/floppy.c
@@ -2114,6 +2114,9 @@ static void setup_format_params(int track)
raw_cmd->kernel_data = floppy_track_buffer;
raw_cmd->length = 4 * F_SECT_PER_TRACK;
+ if (!F_SECT_PER_TRACK)
+ return;
+
/* allow for about 30ms for data transport per track */
head_shift = (F_SECT_PER_TRACK + 5) / 6;
@@ -3236,8 +3239,12 @@ static int set_geometry(unsigned int cmd, struct floppy_struct *g,
int cnt;
/* sanity checking for parameters. */
- if (g->sect <= 0 ||
- g->head <= 0 ||
+ if ((int)g->sect <= 0 ||
+ (int)g->head <= 0 ||
+ /* check for overflow in max_sector */
+ (int)(g->sect * g->head) <= 0 ||
+ /* check for zero in F_SECT_PER_TRACK */
+ (unsigned char)((g->sect << 2) >> FD_SIZECODE(g)) == 0 ||
g->track <= 0 || g->track > UDP->tracks >> STRETCH(g) ||
/* check if reserved bits are set */
(g->stretch & ~(FD_STRETCH | FD_SWAPSIDES | FD_SECTBASEMASK)) != 0)
@@ -3381,6 +3388,24 @@ static int fd_getgeo(struct block_device *bdev, struct hd_geometry *geo)
return 0;
}
+static bool valid_floppy_drive_params(const short autodetect[8],
+ int native_format)
+{
+ size_t floppy_type_size = ARRAY_SIZE(floppy_type);
+ size_t i = 0;
+
+ for (i = 0; i < 8; ++i) {
+ if (autodetect[i] < 0 ||
+ autodetect[i] >= floppy_type_size)
+ return false;
+ }
+
+ if (native_format < 0 || native_format >= floppy_type_size)
+ return false;
+
+ return true;
+}
+
static int fd_locked_ioctl(struct block_device *bdev, fmode_t mode, unsigned int cmd,
unsigned long param)
{
@@ -3507,6 +3532,9 @@ static int fd_locked_ioctl(struct block_device *bdev, fmode_t mode, unsigned int
SUPBOUND(size, strlen((const char *)outparam) + 1);
break;
case FDSETDRVPRM:
+ if (!valid_floppy_drive_params(inparam.dp.autodetect,
+ inparam.dp.native_format))
+ return -EINVAL;
*UDP = inparam.dp;
break;
case FDGETDRVPRM:
@@ -3704,6 +3732,8 @@ static int compat_setdrvprm(int drive,
return -EPERM;
if (copy_from_user(&v, arg, sizeof(struct compat_floppy_drive_params)))
return -EFAULT;
+ if (!valid_floppy_drive_params(v.autodetect, v.native_format))
+ return -EINVAL;
mutex_lock(&floppy_mutex);
UDP->cmos = v.cmos;
UDP->max_dtr = v.max_dtr;
@@ -3756,7 +3786,7 @@ static int compat_getdrvprm(int drive,
v.native_format = UDP->native_format;
mutex_unlock(&floppy_mutex);
- if (copy_from_user(arg, &v, sizeof(struct compat_floppy_drive_params)))
+ if (copy_to_user(arg, &v, sizeof(struct compat_floppy_drive_params)))
return -EFAULT;
return 0;
}
@@ -3792,7 +3822,7 @@ static int compat_getdrvstat(int drive, bool poll,
v.bufblocks = UDRS->bufblocks;
mutex_unlock(&floppy_mutex);
- if (copy_from_user(arg, &v, sizeof(struct compat_floppy_drive_struct)))
+ if (copy_to_user(arg, &v, sizeof(struct compat_floppy_drive_struct)))
return -EFAULT;
return 0;
Eintr:
diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index bd447de4a5b8..ec61dd873c93 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -857,7 +857,7 @@ static void loop_unprepare_queue(struct loop_device *lo)
static int loop_kthread_worker_fn(void *worker_ptr)
{
- current->flags |= PF_LESS_THROTTLE;
+ current->flags |= PF_LESS_THROTTLE | PF_MEMALLOC_NOIO;
return kthread_worker_fn(worker_ptr);
}
@@ -1605,6 +1605,7 @@ static int lo_compat_ioctl(struct block_device *bdev, fmode_t mode,
arg = (unsigned long) compat_ptr(arg);
case LOOP_SET_FD:
case LOOP_CHANGE_FD:
+ case LOOP_SET_DIRECT_IO:
err = lo_ioctl(bdev, mode, cmd, arg);
break;
default:
diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index d32cd943dff2..929bd255a290 100644
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -106,6 +106,7 @@ struct nbd_device {
struct nbd_config *config;
struct mutex config_lock;
struct gendisk *disk;
+ struct workqueue_struct *recv_workq;
struct list_head list;
struct task_struct *task_recv;
@@ -132,9 +133,10 @@ static struct dentry *nbd_dbg_dir;
#define NBD_MAGIC 0x68797548
+#define NBD_DEF_BLKSIZE 1024
+
static unsigned int nbds_max = 16;
static int max_part = 16;
-static struct workqueue_struct *recv_workqueue;
static int part_shift;
static int nbd_dev_dbg_init(struct nbd_device *nbd);
@@ -226,8 +228,8 @@ static void nbd_put(struct nbd_device *nbd)
if (refcount_dec_and_mutex_lock(&nbd->refs,
&nbd_index_mutex)) {
idr_remove(&nbd_index_idr, nbd->index);
- mutex_unlock(&nbd_index_mutex);
nbd_dev_remove(nbd);
+ mutex_unlock(&nbd_index_mutex);
}
}
@@ -340,8 +342,10 @@ static enum blk_eh_timer_return nbd_xmit_timeout(struct request *req,
}
config = nbd->config;
- if (!mutex_trylock(&cmd->lock))
+ if (!mutex_trylock(&cmd->lock)) {
+ nbd_config_put(nbd);
return BLK_EH_RESET_TIMER;
+ }
if (config->num_connections > 1) {
dev_err_ratelimited(nbd_to_dev(nbd),
@@ -644,6 +648,12 @@ static struct nbd_cmd *nbd_read_stat(struct nbd_device *nbd, int index)
ret = -ENOENT;
goto out;
}
+ if (cmd->status != BLK_STS_OK) {
+ dev_err(disk_to_dev(nbd->disk), "Command already handled %p\n",
+ req);
+ ret = -ENOENT;
+ goto out;
+ }
if (test_bit(NBD_CMD_REQUEUED, &cmd->flags)) {
dev_err(disk_to_dev(nbd->disk), "Raced with timeout on req %p\n",
req);
@@ -908,6 +918,26 @@ static blk_status_t nbd_queue_rq(struct blk_mq_hw_ctx *hctx,
return ret;
}
+static struct socket *nbd_get_socket(struct nbd_device *nbd, unsigned long fd,
+ int *err)
+{
+ struct socket *sock;
+
+ *err = 0;
+ sock = sockfd_lookup(fd, err);
+ if (!sock)
+ return NULL;
+
+ if (sock->ops->shutdown == sock_no_shutdown) {
+ dev_err(disk_to_dev(nbd->disk), "Unsupported socket: shutdown callout must be supported.\n");
+ *err = -EINVAL;
+ sockfd_put(sock);
+ return NULL;
+ }
+
+ return sock;
+}
+
static int nbd_add_socket(struct nbd_device *nbd, unsigned long arg,
bool netlink)
{
@@ -917,7 +947,7 @@ static int nbd_add_socket(struct nbd_device *nbd, unsigned long arg,
struct nbd_sock *nsock;
int err;
- sock = sockfd_lookup(arg, &err);
+ sock = nbd_get_socket(nbd, arg, &err);
if (!sock)
return err;
@@ -940,14 +970,15 @@ static int nbd_add_socket(struct nbd_device *nbd, unsigned long arg,
sockfd_put(sock);
return -ENOMEM;
}
+
+ config->socks = socks;
+
nsock = kzalloc(sizeof(struct nbd_sock), GFP_KERNEL);
if (!nsock) {
sockfd_put(sock);
return -ENOMEM;
}
- config->socks = socks;
-
nsock->fallback_index = -1;
nsock->dead = false;
mutex_init(&nsock->tx_lock);
@@ -969,7 +1000,7 @@ static int nbd_reconnect_socket(struct nbd_device *nbd, unsigned long arg)
int i;
int err;
- sock = sockfd_lookup(arg, &err);
+ sock = nbd_get_socket(nbd, arg, &err);
if (!sock)
return err;
@@ -1011,7 +1042,7 @@ static int nbd_reconnect_socket(struct nbd_device *nbd, unsigned long arg)
/* We take the tx_mutex in an error path in the recv_work, so we
* need to queue_work outside of the tx_mutex.
*/
- queue_work(recv_workqueue, &args->work);
+ queue_work(nbd->recv_workq, &args->work);
atomic_inc(&config->live_connections);
wake_up(&config->conn_wait);
@@ -1116,6 +1147,10 @@ static void nbd_config_put(struct nbd_device *nbd)
kfree(nbd->config);
nbd->config = NULL;
+ if (nbd->recv_workq)
+ destroy_workqueue(nbd->recv_workq);
+ nbd->recv_workq = NULL;
+
nbd->tag_set.timeout = 0;
queue_flag_clear_unlocked(QUEUE_FLAG_DISCARD, nbd->disk->queue);
@@ -1141,6 +1176,14 @@ static int nbd_start_device(struct nbd_device *nbd)
return -EINVAL;
}
+ nbd->recv_workq = alloc_workqueue("knbd%d-recv",
+ WQ_MEM_RECLAIM | WQ_HIGHPRI |
+ WQ_UNBOUND, 0, nbd->index);
+ if (!nbd->recv_workq) {
+ dev_err(disk_to_dev(nbd->disk), "Could not allocate knbd recv work queue.\n");
+ return -ENOMEM;
+ }
+
blk_mq_update_nr_hw_queues(&nbd->tag_set, config->num_connections);
nbd->task_recv = current;
@@ -1171,7 +1214,7 @@ static int nbd_start_device(struct nbd_device *nbd)
INIT_WORK(&args->work, recv_work);
args->nbd = nbd;
args->index = i;
- queue_work(recv_workqueue, &args->work);
+ queue_work(nbd->recv_workq, &args->work);
}
nbd_size_update(nbd);
return error;
@@ -1191,8 +1234,10 @@ static int nbd_start_device_ioctl(struct nbd_device *nbd, struct block_device *b
mutex_unlock(&nbd->config_lock);
ret = wait_event_interruptible(config->recv_wq,
atomic_read(&config->recv_threads) == 0);
- if (ret)
+ if (ret) {
sock_shutdown(nbd);
+ flush_workqueue(nbd->recv_workq);
+ }
mutex_lock(&nbd->config_lock);
bd_set_size(bdev, 0);
/* user requested, ignore socket errors */
@@ -1207,13 +1252,21 @@ static void nbd_clear_sock_ioctl(struct nbd_device *nbd,
struct block_device *bdev)
{
sock_shutdown(nbd);
- kill_bdev(bdev);
+ __invalidate_device(bdev, true);
nbd_bdev_reset(bdev);
if (test_and_clear_bit(NBD_HAS_CONFIG_REF,
&nbd->config->runtime_flags))
nbd_config_put(nbd);
}
+static bool nbd_is_valid_blksize(unsigned long blksize)
+{
+ if (!blksize || !is_power_of_2(blksize) || blksize < 512 ||
+ blksize > PAGE_SIZE)
+ return false;
+ return true;
+}
+
/* Must be called with config_lock held */
static int __nbd_ioctl(struct block_device *bdev, struct nbd_device *nbd,
unsigned int cmd, unsigned long arg)
@@ -1229,8 +1282,9 @@ static int __nbd_ioctl(struct block_device *bdev, struct nbd_device *nbd,
case NBD_SET_SOCK:
return nbd_add_socket(nbd, arg, false);
case NBD_SET_BLKSIZE:
- if (!arg || !is_power_of_2(arg) || arg < 512 ||
- arg > PAGE_SIZE)
+ if (!arg)
+ arg = NBD_DEF_BLKSIZE;
+ if (!nbd_is_valid_blksize(arg))
return -EINVAL;
nbd_size_set(nbd, arg,
div_s64(config->bytesize, arg));
@@ -1310,7 +1364,7 @@ static struct nbd_config *nbd_alloc_config(void)
atomic_set(&config->recv_threads, 0);
init_waitqueue_head(&config->recv_wq);
init_waitqueue_head(&config->conn_wait);
- config->blksize = 1024;
+ config->blksize = NBD_DEF_BLKSIZE;
atomic_set(&config->live_connections, 0);
try_module_get(THIS_MODULE);
return config;
@@ -1742,6 +1796,12 @@ again:
if (info->attrs[NBD_ATTR_BLOCK_SIZE_BYTES]) {
u64 bsize =
nla_get_u64(info->attrs[NBD_ATTR_BLOCK_SIZE_BYTES]);
+ if (!bsize)
+ bsize = NBD_DEF_BLKSIZE;
+ if (!nbd_is_valid_blksize(bsize)) {
+ ret = -EINVAL;
+ goto out;
+ }
nbd_size_set(nbd, bsize, div64_u64(config->bytesize, bsize));
}
if (info->attrs[NBD_ATTR_TIMEOUT]) {
@@ -1817,6 +1877,12 @@ static void nbd_disconnect_and_put(struct nbd_device *nbd)
mutex_lock(&nbd->config_lock);
nbd_disconnect(nbd);
mutex_unlock(&nbd->config_lock);
+ /*
+ * Make sure recv thread has finished, so it does not drop the last
+ * config ref and try to destroy the workqueue from inside the work
+ * queue.
+ */
+ flush_workqueue(nbd->recv_workq);
if (test_and_clear_bit(NBD_HAS_CONFIG_REF,
&nbd->config->runtime_flags))
nbd_config_put(nbd);
@@ -2197,19 +2263,12 @@ static int __init nbd_init(void)
if (nbds_max > 1UL << (MINORBITS - part_shift))
return -EINVAL;
- recv_workqueue = alloc_workqueue("knbd-recv",
- WQ_MEM_RECLAIM | WQ_HIGHPRI, 0);
- if (!recv_workqueue)
- return -ENOMEM;
- if (register_blkdev(NBD_MAJOR, "nbd")) {
- destroy_workqueue(recv_workqueue);
+ if (register_blkdev(NBD_MAJOR, "nbd"))
return -EIO;
- }
if (genl_register_family(&nbd_genl_family)) {
unregister_blkdev(NBD_MAJOR, "nbd");
- destroy_workqueue(recv_workqueue);
return -EINVAL;
}
nbd_dbg_init();
@@ -2251,7 +2310,6 @@ static void __exit nbd_cleanup(void)
idr_destroy(&nbd_index_idr);
genl_unregister_family(&nbd_genl_family);
- destroy_workqueue(recv_workqueue);
unregister_blkdev(NBD_MAJOR, "nbd");
}
diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c
index c39ef1ded2ff..c5e172093c8c 100644
--- a/drivers/block/pktcdvd.c
+++ b/drivers/block/pktcdvd.c
@@ -2585,7 +2585,6 @@ static int pkt_new_dev(struct pktcdvd_device *pd, dev_t dev)
if (ret)
return ret;
if (!blk_queue_scsi_passthrough(bdev_get_queue(bdev))) {
- WARN_ONCE(true, "Attempt to register a non-SCSI queue\n");
blkdev_put(bdev, FMODE_READ | FMODE_NDELAY);
return -EINVAL;
}
diff --git a/drivers/block/rsxx/core.c b/drivers/block/rsxx/core.c
index 34997df132e2..6beafaa335c7 100644
--- a/drivers/block/rsxx/core.c
+++ b/drivers/block/rsxx/core.c
@@ -1025,8 +1025,10 @@ static void rsxx_pci_remove(struct pci_dev *dev)
cancel_work_sync(&card->event_work);
+ destroy_workqueue(card->event_wq);
rsxx_destroy_dev(card);
rsxx_dma_destroy(card);
+ destroy_workqueue(card->creg_ctrl.creg_wq);
spin_lock_irqsave(&card->irq_lock, flags);
rsxx_disable_ier_and_isr(card, CR_INTR_ALL);
diff --git a/drivers/block/skd_main.c b/drivers/block/skd_main.c
index 64d0fc17c174..95649025cde7 100644
--- a/drivers/block/skd_main.c
+++ b/drivers/block/skd_main.c
@@ -1417,7 +1417,7 @@ static void skd_resolve_req_exception(struct skd_device *skdev,
case SKD_CHECK_STATUS_BUSY_IMMINENT:
skd_log_skreq(skdev, skreq, "retry(busy)");
- blk_requeue_request(skdev->queue, req);
+ blk_mq_requeue_request(req, true);
dev_info(&skdev->pdev->dev, "drive BUSY imminent\n");
skdev->state = SKD_DRVR_STATE_BUSY_IMMINENT;
skdev->timer_countdown = SKD_TIMER_MINUTES(20);
@@ -1427,7 +1427,7 @@ static void skd_resolve_req_exception(struct skd_device *skdev,
case SKD_CHECK_STATUS_REQUEUE_REQUEST:
if ((unsigned long) ++req->special < SKD_MAX_RETRIES) {
skd_log_skreq(skdev, skreq, "retry");
- blk_requeue_request(skdev->queue, req);
+ blk_mq_requeue_request(req, true);
break;
}
/* fall through */
diff --git a/drivers/block/xen-blkback/xenbus.c b/drivers/block/xen-blkback/xenbus.c
index 21c1be1eb226..ed4e80779124 100644
--- a/drivers/block/xen-blkback/xenbus.c
+++ b/drivers/block/xen-blkback/xenbus.c
@@ -973,6 +973,7 @@ static int read_per_ring_refs(struct xen_blkif_ring *ring, const char *dir)
}
blkif->nr_ring_pages = nr_grefs;
+ err = -ENOMEM;
for (i = 0; i < nr_grefs * XEN_BLKIF_REQS_PER_PAGE; i++) {
req = kzalloc(sizeof(*req), GFP_KERNEL);
if (!req)
@@ -995,7 +996,7 @@ static int read_per_ring_refs(struct xen_blkif_ring *ring, const char *dir)
err = xen_blkif_map(ring, ring_ref, nr_grefs, evtchn);
if (err) {
xenbus_dev_fatal(dev, err, "mapping ring-ref port %u", evtchn);
- return err;
+ goto fail;
}
return 0;
@@ -1015,8 +1016,7 @@ fail:
}
kfree(req);
}
- return -ENOMEM;
-
+ return err;
}
static int connect_ring(struct backend_info *be)
diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c
index 133178c9b2cf..1b4e195c0d3c 100644
--- a/drivers/block/zram/zram_drv.c
+++ b/drivers/block/zram/zram_drv.c
@@ -291,13 +291,14 @@ static void reset_bdev(struct zram *zram)
static ssize_t backing_dev_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
+ struct file *file;
struct zram *zram = dev_to_zram(dev);
- struct file *file = zram->backing_dev;
char *p;
ssize_t ret;
down_read(&zram->init_lock);
- if (!zram_wb_enabled(zram)) {
+ file = zram->backing_dev;
+ if (!file) {
memcpy(buf, "none\n", 5);
up_read(&zram->init_lock);
return 5;
generated by cgit v1.2.3 (git 2.0.4) at 2024-04-30 16:48:24 +0000