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-rw-r--r--drivers/block/mtip32xx/mtip32xx.c2
-rw-r--r--drivers/block/nbd.c411
-rw-r--r--drivers/block/null_blk.c128
-rw-r--r--drivers/lightnvm/Kconfig2
-rw-r--r--drivers/lightnvm/Makefile2
-rw-r--r--drivers/lightnvm/core.c55
-rw-r--r--drivers/lightnvm/lightnvm.h35
-rw-r--r--drivers/lightnvm/sysfs.c198
-rw-r--r--drivers/md/bcache/btree.c6
-rw-r--r--drivers/md/bcache/debug.c6
-rw-r--r--drivers/md/bcache/movinggc.c5
-rw-r--r--drivers/md/bcache/request.c9
-rw-r--r--drivers/md/bcache/writeback.c5
-rw-r--r--drivers/md/dm-crypt.c2
-rw-r--r--drivers/md/dm-log-writes.c6
-rw-r--r--drivers/md/dm-rq.c2
-rw-r--r--drivers/md/raid1.c8
-rw-r--r--drivers/nvme/host/core.c155
-rw-r--r--drivers/nvme/host/fabrics.c25
-rw-r--r--drivers/nvme/host/fabrics.h11
-rw-r--r--drivers/nvme/host/lightnvm.c33
-rw-r--r--drivers/nvme/host/nvme.h30
-rw-r--r--drivers/nvme/host/scsi.c80
-rw-r--r--drivers/nvme/target/admin-cmd.c88
-rw-r--r--drivers/nvme/target/io-cmd.c3
25 files changed, 779 insertions, 528 deletions
diff --git a/drivers/block/mtip32xx/mtip32xx.c b/drivers/block/mtip32xx/mtip32xx.c
index 2aca98e8e427..88c46853dbb5 100644
--- a/drivers/block/mtip32xx/mtip32xx.c
+++ b/drivers/block/mtip32xx/mtip32xx.c
@@ -3686,7 +3686,7 @@ static int mtip_block_open(struct block_device *dev, fmode_t mode)
return -ENODEV;
}
-void mtip_block_release(struct gendisk *disk, fmode_t mode)
+static void mtip_block_release(struct gendisk *disk, fmode_t mode)
{
}
diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index a9e398019f38..ccfcfc11399a 100644
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -34,33 +34,29 @@
#include <linux/kthread.h>
#include <linux/types.h>
#include <linux/debugfs.h>
+#include <linux/blk-mq.h>
#include <asm/uaccess.h>
#include <asm/types.h>
#include <linux/nbd.h>
+#define NBD_TIMEDOUT 0
+#define NBD_DISCONNECT_REQUESTED 1
+
struct nbd_device {
u32 flags;
+ unsigned long runtime_flags;
struct socket * sock; /* If == NULL, device is not ready, yet */
int magic;
- spinlock_t queue_lock;
- struct list_head queue_head; /* Requests waiting result */
- struct request *active_req;
- wait_queue_head_t active_wq;
- struct list_head waiting_queue; /* Requests to be sent */
- wait_queue_head_t waiting_wq;
+ struct blk_mq_tag_set tag_set;
struct mutex tx_lock;
struct gendisk *disk;
int blksize;
loff_t bytesize;
- int xmit_timeout;
- bool timedout;
- bool disconnect; /* a disconnect has been requested by user */
- struct timer_list timeout_timer;
/* protects initialization and shutdown of the socket */
spinlock_t sock_lock;
struct task_struct *task_recv;
@@ -71,6 +67,11 @@ struct nbd_device {
#endif
};
+struct nbd_cmd {
+ struct nbd_device *nbd;
+ struct list_head list;
+};
+
#if IS_ENABLED(CONFIG_DEBUG_FS)
static struct dentry *nbd_dbg_dir;
#endif
@@ -83,18 +84,6 @@ static unsigned int nbds_max = 16;
static struct nbd_device *nbd_dev;
static int max_part;
-/*
- * Use just one lock (or at most 1 per NIC). Two arguments for this:
- * 1. Each NIC is essentially a synchronization point for all servers
- * accessed through that NIC so there's no need to have more locks
- * than NICs anyway.
- * 2. More locks lead to more "Dirty cache line bouncing" which will slow
- * down each lock to the point where they're actually slower than just
- * a single lock.
- * Thanks go to Jens Axboe and Al Viro for their LKML emails explaining this!
- */
-static DEFINE_SPINLOCK(nbd_lock);
-
static inline struct device *nbd_to_dev(struct nbd_device *nbd)
{
return disk_to_dev(nbd->disk);
@@ -153,18 +142,16 @@ static int nbd_size_set(struct nbd_device *nbd, struct block_device *bdev,
return 0;
}
-static void nbd_end_request(struct nbd_device *nbd, struct request *req)
+static void nbd_end_request(struct nbd_cmd *cmd)
{
+ struct nbd_device *nbd = cmd->nbd;
+ struct request *req = blk_mq_rq_from_pdu(cmd);
int error = req->errors ? -EIO : 0;
- struct request_queue *q = req->q;
- unsigned long flags;
- dev_dbg(nbd_to_dev(nbd), "request %p: %s\n", req,
+ dev_dbg(nbd_to_dev(nbd), "request %p: %s\n", cmd,
error ? "failed" : "done");
- spin_lock_irqsave(q->queue_lock, flags);
- __blk_end_request_all(req, error);
- spin_unlock_irqrestore(q->queue_lock, flags);
+ blk_mq_complete_request(req, error);
}
/*
@@ -172,40 +159,49 @@ static void nbd_end_request(struct nbd_device *nbd, struct request *req)
*/
static void sock_shutdown(struct nbd_device *nbd)
{
- spin_lock_irq(&nbd->sock_lock);
+ struct socket *sock;
+
+ spin_lock(&nbd->sock_lock);
if (!nbd->sock) {
spin_unlock_irq(&nbd->sock_lock);
return;
}
+ sock = nbd->sock;
dev_warn(disk_to_dev(nbd->disk), "shutting down socket\n");
- kernel_sock_shutdown(nbd->sock, SHUT_RDWR);
- sockfd_put(nbd->sock);
nbd->sock = NULL;
- spin_unlock_irq(&nbd->sock_lock);
+ spin_unlock(&nbd->sock_lock);
- del_timer(&nbd->timeout_timer);
+ kernel_sock_shutdown(sock, SHUT_RDWR);
+ sockfd_put(sock);
}
-static void nbd_xmit_timeout(unsigned long arg)
+static enum blk_eh_timer_return nbd_xmit_timeout(struct request *req,
+ bool reserved)
{
- struct nbd_device *nbd = (struct nbd_device *)arg;
- unsigned long flags;
-
- if (list_empty(&nbd->queue_head))
- return;
+ struct nbd_cmd *cmd = blk_mq_rq_to_pdu(req);
+ struct nbd_device *nbd = cmd->nbd;
+ struct socket *sock = NULL;
- spin_lock_irqsave(&nbd->sock_lock, flags);
+ spin_lock(&nbd->sock_lock);
- nbd->timedout = true;
+ set_bit(NBD_TIMEDOUT, &nbd->runtime_flags);
- if (nbd->sock)
- kernel_sock_shutdown(nbd->sock, SHUT_RDWR);
+ if (nbd->sock) {
+ sock = nbd->sock;
+ get_file(sock->file);
+ }
- spin_unlock_irqrestore(&nbd->sock_lock, flags);
+ spin_unlock(&nbd->sock_lock);
+ if (sock) {
+ kernel_sock_shutdown(sock, SHUT_RDWR);
+ sockfd_put(sock);
+ }
+ req->errors++;
dev_err(nbd_to_dev(nbd), "Connection timed out, shutting down connection\n");
+ return BLK_EH_HANDLED;
}
/*
@@ -255,9 +251,6 @@ static int sock_xmit(struct nbd_device *nbd, int send, void *buf, int size,
tsk_restore_flags(current, pflags, PF_MEMALLOC);
- if (!send && nbd->xmit_timeout)
- mod_timer(&nbd->timeout_timer, jiffies + nbd->xmit_timeout);
-
return result;
}
@@ -273,8 +266,9 @@ static inline int sock_send_bvec(struct nbd_device *nbd, struct bio_vec *bvec,
}
/* always call with the tx_lock held */
-static int nbd_send_req(struct nbd_device *nbd, struct request *req)
+static int nbd_send_cmd(struct nbd_device *nbd, struct nbd_cmd *cmd)
{
+ struct request *req = blk_mq_rq_from_pdu(cmd);
int result, flags;
struct nbd_request request;
unsigned long size = blk_rq_bytes(req);
@@ -298,10 +292,10 @@ static int nbd_send_req(struct nbd_device *nbd, struct request *req)
request.from = cpu_to_be64((u64)blk_rq_pos(req) << 9);
request.len = htonl(size);
}
- memcpy(request.handle, &req, sizeof(req));
+ memcpy(request.handle, &req->tag, sizeof(req->tag));
dev_dbg(nbd_to_dev(nbd), "request %p: sending control (%s@%llu,%uB)\n",
- req, nbdcmd_to_ascii(type),
+ cmd, nbdcmd_to_ascii(type),
(unsigned long long)blk_rq_pos(req) << 9, blk_rq_bytes(req));
result = sock_xmit(nbd, 1, &request, sizeof(request),
(type == NBD_CMD_WRITE) ? MSG_MORE : 0);
@@ -323,7 +317,7 @@ static int nbd_send_req(struct nbd_device *nbd, struct request *req)
if (!rq_iter_last(bvec, iter))
flags = MSG_MORE;
dev_dbg(nbd_to_dev(nbd), "request %p: sending %d bytes data\n",
- req, bvec.bv_len);
+ cmd, bvec.bv_len);
result = sock_send_bvec(nbd, &bvec, flags);
if (result <= 0) {
dev_err(disk_to_dev(nbd->disk),
@@ -336,29 +330,6 @@ static int nbd_send_req(struct nbd_device *nbd, struct request *req)
return 0;
}
-static struct request *nbd_find_request(struct nbd_device *nbd,
- struct request *xreq)
-{
- struct request *req, *tmp;
- int err;
-
- err = wait_event_interruptible(nbd->active_wq, nbd->active_req != xreq);
- if (unlikely(err))
- return ERR_PTR(err);
-
- spin_lock(&nbd->queue_lock);
- list_for_each_entry_safe(req, tmp, &nbd->queue_head, queuelist) {
- if (req != xreq)
- continue;
- list_del_init(&req->queuelist);
- spin_unlock(&nbd->queue_lock);
- return req;
- }
- spin_unlock(&nbd->queue_lock);
-
- return ERR_PTR(-ENOENT);
-}
-
static inline int sock_recv_bvec(struct nbd_device *nbd, struct bio_vec *bvec)
{
int result;
@@ -370,11 +341,14 @@ static inline int sock_recv_bvec(struct nbd_device *nbd, struct bio_vec *bvec)
}
/* NULL returned = something went wrong, inform userspace */
-static struct request *nbd_read_stat(struct nbd_device *nbd)
+static struct nbd_cmd *nbd_read_stat(struct nbd_device *nbd)
{
int result;
struct nbd_reply reply;
- struct request *req;
+ struct nbd_cmd *cmd;
+ struct request *req = NULL;
+ u16 hwq;
+ int tag;
reply.magic = 0;
result = sock_xmit(nbd, 0, &reply, sizeof(reply), MSG_WAITALL);
@@ -390,25 +364,27 @@ static struct request *nbd_read_stat(struct nbd_device *nbd)
return ERR_PTR(-EPROTO);
}
- req = nbd_find_request(nbd, *(struct request **)reply.handle);
- if (IS_ERR(req)) {
- result = PTR_ERR(req);
- if (result != -ENOENT)
- return ERR_PTR(result);
+ memcpy(&tag, reply.handle, sizeof(int));
- dev_err(disk_to_dev(nbd->disk), "Unexpected reply (%p)\n",
- reply.handle);
- return ERR_PTR(-EBADR);
+ hwq = blk_mq_unique_tag_to_hwq(tag);
+ if (hwq < nbd->tag_set.nr_hw_queues)
+ req = blk_mq_tag_to_rq(nbd->tag_set.tags[hwq],
+ blk_mq_unique_tag_to_tag(tag));
+ if (!req || !blk_mq_request_started(req)) {
+ dev_err(disk_to_dev(nbd->disk), "Unexpected reply (%d) %p\n",
+ tag, req);
+ return ERR_PTR(-ENOENT);
}
+ cmd = blk_mq_rq_to_pdu(req);
if (ntohl(reply.error)) {
dev_err(disk_to_dev(nbd->disk), "Other side returned error (%d)\n",
ntohl(reply.error));
req->errors++;
- return req;
+ return cmd;
}
- dev_dbg(nbd_to_dev(nbd), "request %p: got reply\n", req);
+ dev_dbg(nbd_to_dev(nbd), "request %p: got reply\n", cmd);
if (rq_data_dir(req) != WRITE) {
struct req_iterator iter;
struct bio_vec bvec;
@@ -419,13 +395,13 @@ static struct request *nbd_read_stat(struct nbd_device *nbd)
dev_err(disk_to_dev(nbd->disk), "Receive data failed (result %d)\n",
result);
req->errors++;
- return req;
+ return cmd;
}
dev_dbg(nbd_to_dev(nbd), "request %p: got %d bytes data\n",
- req, bvec.bv_len);
+ cmd, bvec.bv_len);
}
}
- return req;
+ return cmd;
}
static ssize_t pid_show(struct device *dev,
@@ -444,7 +420,7 @@ static struct device_attribute pid_attr = {
static int nbd_thread_recv(struct nbd_device *nbd, struct block_device *bdev)
{
- struct request *req;
+ struct nbd_cmd *cmd;
int ret;
BUG_ON(nbd->magic != NBD_MAGIC);
@@ -460,13 +436,13 @@ static int nbd_thread_recv(struct nbd_device *nbd, struct block_device *bdev)
nbd_size_update(nbd, bdev);
while (1) {
- req = nbd_read_stat(nbd);
- if (IS_ERR(req)) {
- ret = PTR_ERR(req);
+ cmd = nbd_read_stat(nbd);
+ if (IS_ERR(cmd)) {
+ ret = PTR_ERR(cmd);
break;
}
- nbd_end_request(nbd, req);
+ nbd_end_request(cmd);
}
nbd_size_clear(nbd, bdev);
@@ -475,44 +451,37 @@ static int nbd_thread_recv(struct nbd_device *nbd, struct block_device *bdev)
return ret;
}
-static void nbd_clear_que(struct nbd_device *nbd)
+static void nbd_clear_req(struct request *req, void *data, bool reserved)
{
- struct request *req;
+ struct nbd_cmd *cmd;
+
+ if (!blk_mq_request_started(req))
+ return;
+ cmd = blk_mq_rq_to_pdu(req);
+ req->errors++;
+ nbd_end_request(cmd);
+}
+static void nbd_clear_que(struct nbd_device *nbd)
+{
BUG_ON(nbd->magic != NBD_MAGIC);
/*
* Because we have set nbd->sock to NULL under the tx_lock, all
- * modifications to the list must have completed by now. For
- * the same reason, the active_req must be NULL.
- *
- * As a consequence, we don't need to take the spin lock while
- * purging the list here.
+ * modifications to the list must have completed by now.
*/
BUG_ON(nbd->sock);
- BUG_ON(nbd->active_req);
- while (!list_empty(&nbd->queue_head)) {
- req = list_entry(nbd->queue_head.next, struct request,
- queuelist);
- list_del_init(&req->queuelist);
- req->errors++;
- nbd_end_request(nbd, req);
- }
-
- while (!list_empty(&nbd->waiting_queue)) {
- req = list_entry(nbd->waiting_queue.next, struct request,
- queuelist);
- list_del_init(&req->queuelist);
- req->errors++;
- nbd_end_request(nbd, req);
- }
+ blk_mq_tagset_busy_iter(&nbd->tag_set, nbd_clear_req, NULL);
dev_dbg(disk_to_dev(nbd->disk), "queue cleared\n");
}
-static void nbd_handle_req(struct nbd_device *nbd, struct request *req)
+static void nbd_handle_cmd(struct nbd_cmd *cmd)
{
+ struct request *req = blk_mq_rq_from_pdu(cmd);
+ struct nbd_device *nbd = cmd->nbd;
+
if (req->cmd_type != REQ_TYPE_FS)
goto error_out;
@@ -526,6 +495,7 @@ static void nbd_handle_req(struct nbd_device *nbd, struct request *req)
req->errors = 0;
mutex_lock(&nbd->tx_lock);
+ nbd->task_send = current;
if (unlikely(!nbd->sock)) {
mutex_unlock(&nbd->tx_lock);
dev_err(disk_to_dev(nbd->disk),
@@ -533,106 +503,30 @@ static void nbd_handle_req(struct nbd_device *nbd, struct request *req)
goto error_out;
}
- nbd->active_req = req;
-
- if (nbd->xmit_timeout && list_empty_careful(&nbd->queue_head))
- mod_timer(&nbd->timeout_timer, jiffies + nbd->xmit_timeout);
-
- if (nbd_send_req(nbd, req) != 0) {
+ if (nbd_send_cmd(nbd, cmd) != 0) {
dev_err(disk_to_dev(nbd->disk), "Request send failed\n");
req->errors++;
- nbd_end_request(nbd, req);
- } else {
- spin_lock(&nbd->queue_lock);
- list_add_tail(&req->queuelist, &nbd->queue_head);
- spin_unlock(&nbd->queue_lock);
+ nbd_end_request(cmd);
}
- nbd->active_req = NULL;
+ nbd->task_send = NULL;
mutex_unlock(&nbd->tx_lock);
- wake_up_all(&nbd->active_wq);
return;
error_out:
req->errors++;
- nbd_end_request(nbd, req);
+ nbd_end_request(cmd);
}
-static int nbd_thread_send(void *data)
+static int nbd_queue_rq(struct blk_mq_hw_ctx *hctx,
+ const struct blk_mq_queue_data *bd)
{
- struct nbd_device *nbd = data;
- struct request *req;
-
- nbd->task_send = current;
-
- set_user_nice(current, MIN_NICE);
- while (!kthread_should_stop() || !list_empty(&nbd->waiting_queue)) {
- /* wait for something to do */
- wait_event_interruptible(nbd->waiting_wq,
- kthread_should_stop() ||
- !list_empty(&nbd->waiting_queue));
-
- /* extract request */
- if (list_empty(&nbd->waiting_queue))
- continue;
-
- spin_lock_irq(&nbd->queue_lock);
- req = list_entry(nbd->waiting_queue.next, struct request,
- queuelist);
- list_del_init(&req->queuelist);
- spin_unlock_irq(&nbd->queue_lock);
-
- /* handle request */
- nbd_handle_req(nbd, req);
- }
+ struct nbd_cmd *cmd = blk_mq_rq_to_pdu(bd->rq);
- nbd->task_send = NULL;
-
- return 0;
-}
-
-/*
- * We always wait for result of write, for now. It would be nice to make it optional
- * in future
- * if ((rq_data_dir(req) == WRITE) && (nbd->flags & NBD_WRITE_NOCHK))
- * { printk( "Warning: Ignoring result!\n"); nbd_end_request( req ); }
- */
-
-static void nbd_request_handler(struct request_queue *q)
- __releases(q->queue_lock) __acquires(q->queue_lock)
-{
- struct request *req;
-
- while ((req = blk_fetch_request(q)) != NULL) {
- struct nbd_device *nbd;
-
- spin_unlock_irq(q->queue_lock);
-
- nbd = req->rq_disk->private_data;
-
- BUG_ON(nbd->magic != NBD_MAGIC);
-
- dev_dbg(nbd_to_dev(nbd), "request %p: dequeued (flags=%x)\n",
- req, req->cmd_type);
-
- if (unlikely(!nbd->sock)) {
- dev_err_ratelimited(disk_to_dev(nbd->disk),
- "Attempted send on closed socket\n");
- req->errors++;
- nbd_end_request(nbd, req);
- spin_lock_irq(q->queue_lock);
- continue;
- }
-
- spin_lock_irq(&nbd->queue_lock);
- list_add_tail(&req->queuelist, &nbd->waiting_queue);
- spin_unlock_irq(&nbd->queue_lock);
-
- wake_up(&nbd->waiting_wq);
-
- spin_lock_irq(q->queue_lock);
- }
+ blk_mq_start_request(bd->rq);
+ nbd_handle_cmd(cmd);
+ return BLK_MQ_RQ_QUEUE_OK;
}
static int nbd_set_socket(struct nbd_device *nbd, struct socket *sock)
@@ -657,15 +551,13 @@ out:
/* Reset all properties of an NBD device */
static void nbd_reset(struct nbd_device *nbd)
{
- nbd->disconnect = false;
- nbd->timedout = false;
+ nbd->runtime_flags = 0;
nbd->blksize = 1024;
nbd->bytesize = 0;
set_capacity(nbd->disk, 0);
nbd->flags = 0;
- nbd->xmit_timeout = 0;
+ nbd->tag_set.timeout = 0;
queue_flag_clear_unlocked(QUEUE_FLAG_DISCARD, nbd->disk->queue);
- del_timer_sync(&nbd->timeout_timer);
}
static void nbd_bdev_reset(struct block_device *bdev)
@@ -700,33 +592,37 @@ static int __nbd_ioctl(struct block_device *bdev, struct nbd_device *nbd,
{
switch (cmd) {
case NBD_DISCONNECT: {
- struct request sreq;
+ struct request *sreq;
dev_info(disk_to_dev(nbd->disk), "NBD_DISCONNECT\n");
if (!nbd->sock)
return -EINVAL;
+ sreq = blk_mq_alloc_request(bdev_get_queue(bdev), WRITE, 0);
+ if (!sreq)
+ return -ENOMEM;
+
mutex_unlock(&nbd->tx_lock);
fsync_bdev(bdev);
mutex_lock(&nbd->tx_lock);
- blk_rq_init(NULL, &sreq);
- sreq.cmd_type = REQ_TYPE_DRV_PRIV;
+ sreq->cmd_type = REQ_TYPE_DRV_PRIV;
/* Check again after getting mutex back. */
- if (!nbd->sock)
+ if (!nbd->sock) {
+ blk_mq_free_request(sreq);
return -EINVAL;
+ }
- nbd->disconnect = true;
+ set_bit(NBD_DISCONNECT_REQUESTED, &nbd->runtime_flags);
- nbd_send_req(nbd, &sreq);
+ nbd_send_cmd(nbd, blk_mq_rq_to_pdu(sreq));
+ blk_mq_free_request(sreq);
return 0;
}
case NBD_CLEAR_SOCK:
sock_shutdown(nbd);
nbd_clear_que(nbd);
- BUG_ON(!list_empty(&nbd->queue_head));
- BUG_ON(!list_empty(&nbd->waiting_queue));
kill_bdev(bdev);
return 0;
@@ -758,13 +654,7 @@ static int __nbd_ioctl(struct block_device *bdev, struct nbd_device *nbd,
return nbd_size_set(nbd, bdev, nbd->blksize, arg);
case NBD_SET_TIMEOUT:
- nbd->xmit_timeout = arg * HZ;
- if (arg)
- mod_timer(&nbd->timeout_timer,
- jiffies + nbd->xmit_timeout);
- else
- del_timer_sync(&nbd->timeout_timer);
-
+ nbd->tag_set.timeout = arg * HZ;
return 0;
case NBD_SET_FLAGS:
@@ -772,7 +662,6 @@ static int __nbd_ioctl(struct block_device *bdev, struct nbd_device *nbd,
return 0;
case NBD_DO_IT: {
- struct task_struct *thread;
int error;
if (nbd->task_recv)
@@ -786,18 +675,9 @@ static int __nbd_ioctl(struct block_device *bdev, struct nbd_device *nbd,
nbd_parse_flags(nbd, bdev);
- thread = kthread_run(nbd_thread_send, nbd, "%s",
- nbd_name(nbd));
- if (IS_ERR(thread)) {
- mutex_lock(&nbd->tx_lock);
- nbd->task_recv = NULL;
- return PTR_ERR(thread);
- }
-
nbd_dev_dbg_init(nbd);
error = nbd_thread_recv(nbd, bdev);
nbd_dev_dbg_close(nbd);
- kthread_stop(thread);
mutex_lock(&nbd->tx_lock);
nbd->task_recv = NULL;
@@ -807,9 +687,10 @@ static int __nbd_ioctl(struct block_device *bdev, struct nbd_device *nbd,
kill_bdev(bdev);
nbd_bdev_reset(bdev);
- if (nbd->disconnect) /* user requested, ignore socket errors */
+ /* user requested, ignore socket errors */
+ if (test_bit(NBD_DISCONNECT_REQUESTED, &nbd->runtime_flags))
error = 0;
- if (nbd->timedout)
+ if (test_bit(NBD_TIMEDOUT, &nbd->runtime_flags))
error = -ETIMEDOUT;
nbd_reset(nbd);
@@ -825,10 +706,10 @@ static int __nbd_ioctl(struct block_device *bdev, struct nbd_device *nbd,
return 0;
case NBD_PRINT_DEBUG:
- dev_info(disk_to_dev(nbd->disk),
- "next = %p, prev = %p, head = %p\n",
- nbd->queue_head.next, nbd->queue_head.prev,
- &nbd->queue_head);
+ /*
+ * For compatibility only, we no longer keep a list of
+ * outstanding requests.
+ */
return 0;
}
return -ENOTTY;
@@ -935,7 +816,7 @@ static int nbd_dev_dbg_init(struct nbd_device *nbd)
debugfs_create_file("tasks", 0444, dir, nbd, &nbd_dbg_tasks_ops);
debugfs_create_u64("size_bytes", 0444, dir, &nbd->bytesize);
- debugfs_create_u32("timeout", 0444, dir, &nbd->xmit_timeout);
+ debugfs_create_u32("timeout", 0444, dir, &nbd->tag_set.timeout);
debugfs_create_u32("blocksize", 0444, dir, &nbd->blksize);
debugfs_create_file("flags", 0444, dir, nbd, &nbd_dbg_flags_ops);
@@ -987,6 +868,24 @@ static void nbd_dbg_close(void)
#endif
+static int nbd_init_request(void *data, struct request *rq,
+ unsigned int hctx_idx, unsigned int request_idx,
+ unsigned int numa_node)
+{
+ struct nbd_cmd *cmd = blk_mq_rq_to_pdu(rq);
+
+ cmd->nbd = data;
+ INIT_LIST_HEAD(&cmd->list);
+ return 0;
+}
+
+static struct blk_mq_ops nbd_mq_ops = {
+ .queue_rq = nbd_queue_rq,
+ .map_queue = blk_mq_map_queue,
+ .init_request = nbd_init_request,
+ .timeout = nbd_xmit_timeout,
+};
+
/*
* And here should be modules and kernel interface
* (Just smiley confuses emacs :-)
@@ -1035,16 +934,34 @@ static int __init nbd_init(void)
if (!disk)
goto out;
nbd_dev[i].disk = disk;
+
+ nbd_dev[i].tag_set.ops = &nbd_mq_ops;
+ nbd_dev[i].tag_set.nr_hw_queues = 1;
+ nbd_dev[i].tag_set.queue_depth = 128;
+ nbd_dev[i].tag_set.numa_node = NUMA_NO_NODE;
+ nbd_dev[i].tag_set.cmd_size = sizeof(struct nbd_cmd);
+ nbd_dev[i].tag_set.flags = BLK_MQ_F_SHOULD_MERGE |
+ BLK_MQ_F_SG_MERGE | BLK_MQ_F_BLOCKING;
+ nbd_dev[i].tag_set.driver_data = &nbd_dev[i];
+
+ err = blk_mq_alloc_tag_set(&nbd_dev[i].tag_set);
+ if (err) {
+ put_disk(disk);
+ goto out;
+ }
+
/*
* The new linux 2.5 block layer implementation requires
* every gendisk to have its very own request_queue struct.
* These structs are big so we dynamically allocate them.
*/
- disk->queue = blk_init_queue(nbd_request_handler, &nbd_lock);
+ disk->queue = blk_mq_init_queue(&nbd_dev[i].tag_set);
if (!disk->queue) {
+ blk_mq_free_tag_set(&nbd_dev[i].tag_set);
put_disk(disk);
goto out;
}
+
/*
* Tell the block layer that we are not a rotational device
*/
@@ -1069,16 +986,8 @@ static int __init nbd_init(void)
for (i = 0; i < nbds_max; i++) {
struct gendisk *disk = nbd_dev[i].disk;
nbd_dev[i].magic = NBD_MAGIC;
- INIT_LIST_HEAD(&nbd_dev[i].waiting_queue);
- spin_lock_init(&nbd_dev[i].queue_lock);
spin_lock_init(&nbd_dev[i].sock_lock);
- INIT_LIST_HEAD(&nbd_dev[i].queue_head);
mutex_init(&nbd_dev[i].tx_lock);
- init_timer(&nbd_dev[i].timeout_timer);
- nbd_dev[i].timeout_timer.function = nbd_xmit_timeout;
- nbd_dev[i].timeout_timer.data = (unsigned long)&nbd_dev[i];
- init_waitqueue_head(&nbd_dev[i].active_wq);
- init_waitqueue_head(&nbd_dev[i].waiting_wq);
disk->major = NBD_MAJOR;
disk->first_minor = i << part_shift;
disk->fops = &nbd_fops;
@@ -1091,6 +1000,7 @@ static int __init nbd_init(void)
return 0;
out:
while (i--) {
+ blk_mq_free_tag_set(&nbd_dev[i].tag_set);
blk_cleanup_queue(nbd_dev[i].disk->queue);
put_disk(nbd_dev[i].disk);
}
@@ -1110,6 +1020,7 @@ static void __exit nbd_cleanup(void)
if (disk) {
del_gendisk(disk);
blk_cleanup_queue(disk->queue);
+ blk_mq_free_tag_set(&nbd_dev[i].tag_set);
put_disk(disk);
}
}
diff --git a/drivers/block/null_blk.c b/drivers/block/null_blk.c
index 75a7f88d6717..91e1de898daf 100644
--- a/drivers/block/null_blk.c
+++ b/drivers/block/null_blk.c
@@ -34,6 +34,7 @@ struct nullb {
unsigned int index;
struct request_queue *q;
struct gendisk *disk;
+ struct nvm_dev *ndev;
struct blk_mq_tag_set tag_set;
struct hrtimer timer;
unsigned int queue_depth;
@@ -414,23 +415,6 @@ static void cleanup_queues(struct nullb *nullb)
kfree(nullb->queues);
}
-static void null_del_dev(struct nullb *nullb)
-{
- list_del_init(&nullb->list);
-
- if (use_lightnvm)
- nvm_unregister(nullb->disk_name);
- else
- del_gendisk(nullb->disk);
- blk_cleanup_queue(nullb->q);
- if (queue_mode == NULL_Q_MQ)
- blk_mq_free_tag_set(&nullb->tag_set);
- if (!use_lightnvm)
- put_disk(nullb->disk);
- cleanup_queues(nullb);
- kfree(nullb);
-}
-
#ifdef CONFIG_NVM
static void null_lnvm_end_io(struct request *rq, int error)
@@ -564,10 +548,58 @@ static struct nvm_dev_ops null_lnvm_dev_ops = {
/* Simulate nvme protocol restriction */
.max_phys_sect = 64,
};
+
+static int null_nvm_register(struct nullb *nullb)
+{
+ struct nvm_dev *dev;
+ int rv;
+
+ dev = nvm_alloc_dev(0);
+ if (!dev)
+ return -ENOMEM;
+
+ dev->q = nullb->q;
+ memcpy(dev->name, nullb->disk_name, DISK_NAME_LEN);
+ dev->ops = &null_lnvm_dev_ops;
+
+ rv = nvm_register(dev);
+ if (rv) {
+ kfree(dev);
+ return rv;
+ }
+ nullb->ndev = dev;
+ return 0;
+}
+
+static void null_nvm_unregister(struct nullb *nullb)
+{
+ nvm_unregister(nullb->ndev);
+}
#else
-static struct nvm_dev_ops null_lnvm_dev_ops;
+static int null_nvm_register(struct nullb *nullb)
+{
+ return -EINVAL;
+}
+static void null_nvm_unregister(struct nullb *nullb) {}
#endif /* CONFIG_NVM */
+static void null_del_dev(struct nullb *nullb)
+{
+ list_del_init(&nullb->list);
+
+ if (use_lightnvm)
+ null_nvm_unregister(nullb);
+ else
+ del_gendisk(nullb->disk);
+ blk_cleanup_queue(nullb->q);
+ if (queue_mode == NULL_Q_MQ)
+ blk_mq_free_tag_set(&nullb->tag_set);
+ if (!use_lightnvm)
+ put_disk(nullb->disk);
+ cleanup_queues(nullb);
+ kfree(nullb);
+}
+
static int null_open(struct block_device *bdev, fmode_t mode)
{
return 0;
@@ -640,11 +672,32 @@ static int init_driver_queues(struct nullb *nullb)
return 0;
}
-static int null_add_dev(void)
+static int null_gendisk_register(struct nullb *nullb)
{
struct gendisk *disk;
- struct nullb *nullb;
sector_t size;
+
+ disk = nullb->disk = alloc_disk_node(1, home_node);
+ if (!disk)
+ return -ENOMEM;
+ size = gb * 1024 * 1024 * 1024ULL;
+ set_capacity(disk, size >> 9);
+
+ disk->flags |= GENHD_FL_EXT_DEVT | GENHD_FL_SUPPRESS_PARTITION_INFO;
+ disk->major = null_major;
+ disk->first_minor = nullb->index;
+ disk->fops = &null_fops;
+ disk->private_data = nullb;
+ disk->queue = nullb->q;
+ strncpy(disk->disk_name, nullb->disk_name, DISK_NAME_LEN);
+
+ add_disk(disk);
+ return 0;
+}
+
+static int null_add_dev(void)
+{
+ struct nullb *nullb;
int rv;
nullb = kzalloc_node(sizeof(*nullb), GFP_KERNEL, home_node);
@@ -716,42 +769,19 @@ static int null_add_dev(void)
sprintf(nullb->disk_name, "nullb%d", nullb->index);
- if (use_lightnvm) {
- rv = nvm_register(nullb->q, nullb->disk_name,
- &null_lnvm_dev_ops);
- if (rv)
- goto out_cleanup_blk_queue;
- goto done;
- }
-
- disk = nullb->disk = alloc_disk_node(1, home_node);
- if (!disk) {
- rv = -ENOMEM;
- goto out_cleanup_lightnvm;
- }
- size = gb * 1024 * 1024 * 1024ULL;
- set_capacity(disk, size >> 9);
-
- disk->flags |= GENHD_FL_EXT_DEVT | GENHD_FL_SUPPRESS_PARTITION_INFO;
- disk->major = null_major;
- disk->first_minor = nullb->index;
- disk->fops = &null_fops;
- disk->private_data = nullb;
- disk->queue = nullb->q;
- strncpy(disk->disk_name, nullb->disk_name, DISK_NAME_LEN);
+ if (use_lightnvm)
+ rv = null_nvm_register(nullb);
+ else
+ rv = null_gendisk_register(nullb);
- add_disk(disk);
+ if (rv)
+ goto out_cleanup_blk_queue;
-done:
mutex_lock(&lock);
list_add_tail(&nullb->list, &nullb_list);
mutex_unlock(&lock);
return 0;
-
-out_cleanup_lightnvm:
- if (use_lightnvm)
- nvm_unregister(nullb->disk_name);
out_cleanup_blk_queue:
blk_cleanup_queue(nullb->q);
out_cleanup_tags:
diff --git a/drivers/lightnvm/Kconfig b/drivers/lightnvm/Kconfig
index 61c68a1f054a..2f5d5f4a4c75 100644
--- a/drivers/lightnvm/Kconfig
+++ b/drivers/lightnvm/Kconfig
@@ -4,7 +4,7 @@
menuconfig NVM
bool "Open-Channel SSD target support"
- depends on BLOCK
+ depends on BLOCK && HAS_DMA
help
Say Y here to get to enable Open-channel SSDs.
diff --git a/drivers/lightnvm/Makefile b/drivers/lightnvm/Makefile
index a7a0a22cf1a5..1f6b6521016a 100644
--- a/drivers/lightnvm/Makefile
+++ b/drivers/lightnvm/Makefile
@@ -2,6 +2,6 @@
# Makefile for Open-Channel SSDs.
#
-obj-$(CONFIG_NVM) := core.o sysblk.o
+obj-$(CONFIG_NVM) := core.o sysblk.o sysfs.o
obj-$(CONFIG_NVM_GENNVM) += gennvm.o
obj-$(CONFIG_NVM_RRPC) += rrpc.o
diff --git a/drivers/lightnvm/core.c b/drivers/lightnvm/core.c
index c784ddcd4405..1cac0f8bc0dc 100644
--- a/drivers/lightnvm/core.c
+++ b/drivers/lightnvm/core.c
@@ -27,6 +27,8 @@
#include <linux/lightnvm.h>
#include <linux/sched/sysctl.h>
+#include "lightnvm.h"
+
static LIST_HEAD(nvm_tgt_types);
static DECLARE_RWSEM(nvm_tgtt_lock);
static LIST_HEAD(nvm_mgrs);
@@ -581,6 +583,8 @@ static int nvm_core_init(struct nvm_dev *dev)
mutex_init(&dev->mlock);
spin_lock_init(&dev->lock);
+ blk_queue_logical_block_size(dev->q, dev->sec_size);
+
return 0;
err_fmtype:
kfree(dev->lun_map);
@@ -596,15 +600,19 @@ static void nvm_free_mgr(struct nvm_dev *dev)
dev->mt = NULL;
}
-static void nvm_free(struct nvm_dev *dev)
+void nvm_free(struct nvm_dev *dev)
{
if (!dev)
return;
nvm_free_mgr(dev);
+ if (dev->dma_pool)
+ dev->ops->destroy_dma_pool(dev->dma_pool);
+
kfree(dev->lptbl);
kfree(dev->lun_map);
+ kfree(dev);
}
static int nvm_init(struct nvm_dev *dev)
@@ -651,30 +659,19 @@ err:
static void nvm_exit(struct nvm_dev *dev)
{
- if (dev->dma_pool)
- dev->ops->destroy_dma_pool(dev->dma_pool);
- nvm_free(dev);
+ nvm_sysfs_unregister_dev(dev);
+}
- pr_info("nvm: successfully unloaded\n");
+struct nvm_dev *nvm_alloc_dev(int node)
+{
+ return kzalloc_node(sizeof(struct nvm_dev), GFP_KERNEL, node);
}
+EXPORT_SYMBOL(nvm_alloc_dev);
-int nvm_register(struct request_queue *q, char *disk_name,
- struct nvm_dev_ops *ops)
+int nvm_register(struct nvm_dev *dev)
{
- struct nvm_dev *dev;
int ret;
- if (!ops->identity)
- return -EINVAL;
-
- dev = kzalloc(sizeof(struct nvm_dev), GFP_KERNEL);
- if (!dev)
- return -ENOMEM;
-
- dev->q = q;
- dev->ops = ops;
- strncpy(dev->name, disk_name, DISK_NAME_LEN);
-
ret = nvm_init(dev);
if (ret)
goto err_init;
@@ -694,6 +691,10 @@ int nvm_register(struct request_queue *q, char *disk_name,
}
}
+ ret = nvm_sysfs_register_dev(dev);
+ if (ret)
+ goto err_ppalist;
+
if (dev->identity.cap & NVM_ID_DCAP_BBLKMGMT) {
ret = nvm_get_sysblock(dev, &dev->sb);
if (!ret)
@@ -710,31 +711,21 @@ int nvm_register(struct request_queue *q, char *disk_name,
up_write(&nvm_lock);
return 0;
+err_ppalist:
+ dev->ops->destroy_dma_pool(dev->dma_pool);
err_init:
kfree(dev->lun_map);
- kfree(dev);
return ret;
}
EXPORT_SYMBOL(nvm_register);
-void nvm_unregister(char *disk_name)
+void nvm_unregister(struct nvm_dev *dev)
{
- struct nvm_dev *dev;
-
down_write(&nvm_lock);
- dev = nvm_find_nvm_dev(disk_name);
- if (!dev) {
- pr_err("nvm: could not find device %s to unregister\n",
- disk_name);
- up_write(&nvm_lock);
- return;
- }
-
list_del(&dev->devices);
up_write(&nvm_lock);
nvm_exit(dev);
- kfree(dev);
}
EXPORT_SYMBOL(nvm_unregister);
diff --git a/drivers/lightnvm/lightnvm.h b/drivers/lightnvm/lightnvm.h
new file mode 100644
index 000000000000..305c181509a6
--- /dev/null
+++ b/drivers/lightnvm/lightnvm.h
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2016 CNEX Labs. All rights reserved.
+ * Initial release: Matias Bjorling <matias@cnexlabs.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING. If not, write to
+ * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139,
+ * USA.
+ *
+ */
+
+#ifndef LIGHTNVM_H
+#define LIGHTNVM_H
+
+#include <linux/lightnvm.h>
+
+/* core -> sysfs.c */
+int __must_check nvm_sysfs_register_dev(struct nvm_dev *);
+void nvm_sysfs_unregister_dev(struct nvm_dev *);
+int nvm_sysfs_register(void);
+void nvm_sysfs_unregister(void);
+
+/* sysfs > core */
+void nvm_free(struct nvm_dev *);
+
+#endif
diff --git a/drivers/lightnvm/sysfs.c b/drivers/lightnvm/sysfs.c
new file mode 100644
index 000000000000..0338c27ab95a
--- /dev/null
+++ b/drivers/lightnvm/sysfs.c
@@ -0,0 +1,198 @@
+#include <linux/kernel.h>
+#include <linux/lightnvm.h>
+#include <linux/miscdevice.h>
+#include <linux/kobject.h>
+#include <linux/blk-mq.h>
+
+#include "lightnvm.h"
+
+static ssize_t nvm_dev_attr_show(struct device *dev,
+ struct device_attribute *dattr, char *page)
+{
+ struct nvm_dev *ndev = container_of(dev, struct nvm_dev, dev);
+ struct nvm_id *id = &ndev->identity;
+ struct nvm_id_group *grp = &id->groups[0];
+ struct attribute *attr = &dattr->attr;
+
+ if (strcmp(attr->name, "version") == 0) {
+ return scnprintf(page, PAGE_SIZE, "%u\n", id->ver_id);
+ } else if (strcmp(attr->name, "vendor_opcode") == 0) {
+ return scnprintf(page, PAGE_SIZE, "%u\n", id->vmnt);
+ } else if (strcmp(attr->name, "capabilities") == 0) {
+ return scnprintf(page, PAGE_SIZE, "%u\n", id->cap);
+ } else if (strcmp(attr->name, "device_mode") == 0) {
+ return scnprintf(page, PAGE_SIZE, "%u\n", id->dom);
+ } else if (strcmp(attr->name, "media_manager") == 0) {
+ if (!ndev->mt)
+ return scnprintf(page, PAGE_SIZE, "%s\n", "none");
+ return scnprintf(page, PAGE_SIZE, "%s\n", ndev->mt->name);
+ } else if (strcmp(attr->name, "ppa_format") == 0) {
+ return scnprintf(page, PAGE_SIZE,
+ "0x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x\n",
+ id->ppaf.ch_offset, id->ppaf.ch_len,
+ id->ppaf.lun_offset, id->ppaf.lun_len,
+ id->ppaf.pln_offset, id->ppaf.pln_len,
+ id->ppaf.blk_offset, id->ppaf.blk_len,
+ id->ppaf.pg_offset, id->ppaf.pg_len,
+ id->ppaf.sect_offset, id->ppaf.sect_len);
+ } else if (strcmp(attr->name, "media_type") == 0) { /* u8 */
+ return scnprintf(page, PAGE_SIZE, "%u\n", grp->mtype);
+ } else if (strcmp(attr->name, "flash_media_type") == 0) {
+ return scnprintf(page, PAGE_SIZE, "%u\n", grp->fmtype);
+ } else if (strcmp(attr->name, "num_channels") == 0) {
+ return scnprintf(page, PAGE_SIZE, "%u\n", grp->num_ch);
+ } else if (strcmp(attr->name, "num_luns") == 0) {
+ return scnprintf(page, PAGE_SIZE, "%u\n", grp->num_lun);
+ } else if (strcmp(attr->name, "num_planes") == 0) {
+ return scnprintf(page, PAGE_SIZE, "%u\n", grp->num_pln);
+ } else if (strcmp(attr->name, "num_blocks") == 0) { /* u16 */
+ return scnprintf(page, PAGE_SIZE, "%u\n", grp->num_blk);
+ } else if (strcmp(attr->name, "num_pages") == 0) {
+ return scnprintf(page, PAGE_SIZE, "%u\n", grp->num_pg);
+ } else if (strcmp(attr->name, "page_size") == 0) {
+ return scnprintf(page, PAGE_SIZE, "%u\n", grp->fpg_sz);
+ } else if (strcmp(attr->name, "hw_sector_size") == 0) {
+ return scnprintf(page, PAGE_SIZE, "%u\n", grp->csecs);
+ } else if (strcmp(attr->name, "oob_sector_size") == 0) {/* u32 */
+ return scnprintf(page, PAGE_SIZE, "%u\n", grp->sos);
+ } else if (strcmp(attr->name, "read_typ") == 0) {
+ return scnprintf(page, PAGE_SIZE, "%u\n", grp->trdt);
+ } else if (strcmp(attr->name, "read_max") == 0) {
+ return scnprintf(page, PAGE_SIZE, "%u\n", grp->trdm);
+ } else if (strcmp(attr->name, "prog_typ") == 0) {
+ return scnprintf(page, PAGE_SIZE, "%u\n", grp->tprt);
+ } else if (strcmp(attr->name, "prog_max") == 0) {
+ return scnprintf(page, PAGE_SIZE, "%u\n", grp->tprm);
+ } else if (strcmp(attr->name, "erase_typ") == 0) {
+ return scnprintf(page, PAGE_SIZE, "%u\n", grp->tbet);
+ } else if (strcmp(attr->name, "erase_max") == 0) {
+ return scnprintf(page, PAGE_SIZE, "%u\n", grp->tbem);
+ } else if (strcmp(attr->name, "multiplane_modes") == 0) {
+ return scnprintf(page, PAGE_SIZE, "0x%08x\n", grp->mpos);
+ } else if (strcmp(attr->name, "media_capabilities") == 0) {
+ return scnprintf(page, PAGE_SIZE, "0x%08x\n", grp->mccap);
+ } else if (strcmp(attr->name, "max_phys_secs") == 0) {
+ return scnprintf(page, PAGE_SIZE, "%u\n",
+ ndev->ops->max_phys_sect);
+ } else {
+ return scnprintf(page,
+ PAGE_SIZE,
+ "Unhandled attr(%s) in `nvm_dev_attr_show`\n",
+ attr->name);
+ }
+}
+
+#define NVM_DEV_ATTR_RO(_name) \
+ DEVICE_ATTR(_name, S_IRUGO, nvm_dev_attr_show, NULL)
+
+static NVM_DEV_ATTR_RO(version);
+static NVM_DEV_ATTR_RO(vendor_opcode);
+static NVM_DEV_ATTR_RO(capabilities);
+static NVM_DEV_ATTR_RO(device_mode);
+static NVM_DEV_ATTR_RO(ppa_format);
+static NVM_DEV_ATTR_RO(media_manager);
+
+static NVM_DEV_ATTR_RO(media_type);
+static NVM_DEV_ATTR_RO(flash_media_type);
+static NVM_DEV_ATTR_RO(num_channels);
+static NVM_DEV_ATTR_RO(num_luns);
+static NVM_DEV_ATTR_RO(num_planes);
+static NVM_DEV_ATTR_RO(num_blocks);
+static NVM_DEV_ATTR_RO(num_pages);
+static NVM_DEV_ATTR_RO(page_size);
+static NVM_DEV_ATTR_RO(hw_sector_size);
+static NVM_DEV_ATTR_RO(oob_sector_size);
+static NVM_DEV_ATTR_RO(read_typ);
+static NVM_DEV_ATTR_RO(read_max);
+static NVM_DEV_ATTR_RO(prog_typ);
+static NVM_DEV_ATTR_RO(prog_max);
+static NVM_DEV_ATTR_RO(erase_typ);
+static NVM_DEV_ATTR_RO(erase_max);
+static NVM_DEV_ATTR_RO(multiplane_modes);
+static NVM_DEV_ATTR_RO(media_capabilities);
+static NVM_DEV_ATTR_RO(max_phys_secs);
+
+#define NVM_DEV_ATTR(_name) (dev_attr_##_name##)
+
+static struct attribute *nvm_dev_attrs[] = {
+ &dev_attr_version.attr,
+ &dev_attr_vendor_opcode.attr,
+ &dev_attr_capabilities.attr,
+ &dev_attr_device_mode.attr,
+ &dev_attr_media_manager.attr,
+
+ &dev_attr_ppa_format.attr,
+ &dev_attr_media_type.attr,
+ &dev_attr_flash_media_type.attr,
+ &dev_attr_num_channels.attr,
+ &dev_attr_num_luns.attr,
+ &dev_attr_num_planes.attr,
+ &dev_attr_num_blocks.attr,
+ &dev_attr_num_pages.attr,
+ &dev_attr_page_size.attr,
+ &dev_attr_hw_sector_size.attr,
+ &dev_attr_oob_sector_size.attr,
+ &dev_attr_read_typ.attr,
+ &dev_attr_read_max.attr,
+ &dev_attr_prog_typ.attr,
+ &dev_attr_prog_max.attr,
+ &dev_attr_erase_typ.attr,
+ &dev_attr_erase_max.attr,
+ &dev_attr_multiplane_modes.attr,
+ &dev_attr_media_capabilities.attr,
+ &dev_attr_max_phys_secs.attr,
+ NULL,
+};
+
+static struct attribute_group nvm_dev_attr_group = {
+ .name = "lightnvm",
+ .attrs = nvm_dev_attrs,
+};
+
+static const struct attribute_group *nvm_dev_attr_groups[] = {
+ &nvm_dev_attr_group,
+ NULL,
+};
+
+static void nvm_dev_release(struct device *device)
+{
+ struct nvm_dev *dev = container_of(device, struct nvm_dev, dev);
+ struct request_queue *q = dev->q;
+
+ pr_debug("nvm/sysfs: `nvm_dev_release`\n");
+
+ blk_mq_unregister_dev(device, q);
+
+ nvm_free(dev);
+}
+
+static struct device_type nvm_type = {
+ .name = "lightnvm",
+ .groups = nvm_dev_attr_groups,
+ .release = nvm_dev_release,
+};
+
+int nvm_sysfs_register_dev(struct nvm_dev *dev)
+{
+ int ret;
+
+ if (!dev->parent_dev)
+ return 0;
+
+ dev->dev.parent = dev->parent_dev;
+ dev_set_name(&dev->dev, "%s", dev->name);
+ dev->dev.type = &nvm_type;
+ device_initialize(&dev->dev);
+ ret = device_add(&dev->dev);
+
+ if (!ret)
+ blk_mq_register_dev(&dev->dev, dev->q);
+
+ return ret;
+}
+
+void nvm_sysfs_unregister_dev(struct nvm_dev *dev)
+{
+ if (dev && dev->parent_dev)
+ kobject_put(&dev->dev.kobj);
+}
diff --git a/drivers/md/bcache/btree.c b/drivers/md/bcache/btree.c
index 76f7534d1dd1..81d3db40cd7b 100644
--- a/drivers/md/bcache/btree.c
+++ b/drivers/md/bcache/btree.c
@@ -361,12 +361,8 @@ static void __btree_node_write_done(struct closure *cl)
static void btree_node_write_done(struct closure *cl)
{
struct btree *b = container_of(cl, struct btree, io);
- struct bio_vec *bv;
- int n;
-
- bio_for_each_segment_all(bv, b->bio, n)
- __free_page(bv->bv_page);
+ bio_free_pages(b->bio);
__btree_node_write_done(cl);
}
diff --git a/drivers/md/bcache/debug.c b/drivers/md/bcache/debug.c
index c28df164701e..333a1e5f6ae6 100644
--- a/drivers/md/bcache/debug.c
+++ b/drivers/md/bcache/debug.c
@@ -107,9 +107,8 @@ void bch_data_verify(struct cached_dev *dc, struct bio *bio)
{
char name[BDEVNAME_SIZE];
struct bio *check;
- struct bio_vec bv, *bv2;
+ struct bio_vec bv;
struct bvec_iter iter;
- int i;
check = bio_clone(bio, GFP_NOIO);
if (!check)
@@ -136,8 +135,7 @@ void bch_data_verify(struct cached_dev *dc, struct bio *bio)
kunmap_atomic(p1);
}
- bio_for_each_segment_all(bv2, check, i)
- __free_page(bv2->bv_page);
+ bio_free_pages(check);
out_put:
bio_put(check);
}
diff --git a/drivers/md/bcache/movinggc.c b/drivers/md/bcache/movinggc.c
index 1881319f2298..5c4bddecfaf0 100644
--- a/drivers/md/bcache/movinggc.c
+++ b/drivers/md/bcache/movinggc.c
@@ -44,11 +44,8 @@ static void write_moving_finish(struct closure *cl)
{
struct moving_io *io = container_of(cl, struct moving_io, cl);
struct bio *bio = &io->bio.bio;
- struct bio_vec *bv;
- int i;
- bio_for_each_segment_all(bv, bio, i)
- __free_page(bv->bv_page);
+ bio_free_pages(bio);
if (io->op.replace_collision)
trace_bcache_gc_copy_collision(&io->w->key);
diff --git a/drivers/md/bcache/request.c b/drivers/md/bcache/request.c
index 4b177fe11ebb..40ffe5e424b3 100644
--- a/drivers/md/bcache/request.c
+++ b/drivers/md/bcache/request.c
@@ -694,13 +694,8 @@ static void cached_dev_cache_miss_done(struct closure *cl)
if (s->iop.replace_collision)
bch_mark_cache_miss_collision(s->iop.c, s->d);
- if (s->iop.bio) {
- int i;
- struct bio_vec *bv;
-
- bio_for_each_segment_all(bv, s->iop.bio, i)
- __free_page(bv->bv_page);
- }
+ if (s->iop.bio)
+ bio_free_pages(s->iop.bio);
cached_dev_bio_complete(cl);
}
diff --git a/drivers/md/bcache/writeback.c b/drivers/md/bcache/writeback.c
index d9fd2a62e5f6..e51644e503a5 100644
--- a/drivers/md/bcache/writeback.c
+++ b/drivers/md/bcache/writeback.c
@@ -128,11 +128,8 @@ static void write_dirty_finish(struct closure *cl)
struct dirty_io *io = container_of(cl, struct dirty_io, cl);
struct keybuf_key *w = io->bio.bi_private;
struct cached_dev *dc = io->dc;
- struct bio_vec *bv;
- int i;
- bio_for_each_segment_all(bv, &io->bio, i)
- __free_page(bv->bv_page);
+ bio_free_pages(&io->bio);
/* This is kind of a dumb way of signalling errors. */
if (KEY_DIRTY(&w->key)) {
diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c
index 874295757caa..0448e7e35c8c 100644
--- a/drivers/md/dm-crypt.c
+++ b/drivers/md/dm-crypt.c
@@ -1136,7 +1136,7 @@ static void clone_init(struct dm_crypt_io *io, struct bio *clone)
clone->bi_private = io;
clone->bi_end_io = crypt_endio;
clone->bi_bdev = cc->dev->bdev;
- bio_set_op_attrs(clone, bio_op(io->base_bio), io->base_bio->bi_opf);
+ bio_set_op_attrs(clone, bio_op(io->base_bio), bio_flags(io->base_bio));
}
static int kcryptd_io_read(struct dm_crypt_io *io, gfp_t gfp)
diff --git a/drivers/md/dm-log-writes.c b/drivers/md/dm-log-writes.c
index 49e4d8d4558f..4dfe38655a49 100644
--- a/drivers/md/dm-log-writes.c
+++ b/drivers/md/dm-log-writes.c
@@ -149,8 +149,6 @@ static void put_io_block(struct log_writes_c *lc)
static void log_end_io(struct bio *bio)
{
struct log_writes_c *lc = bio->bi_private;
- struct bio_vec *bvec;
- int i;
if (bio->bi_error) {
unsigned long flags;
@@ -161,9 +159,7 @@ static void log_end_io(struct bio *bio)
spin_unlock_irqrestore(&lc->blocks_lock, flags);
}
- bio_for_each_segment_all(bvec, bio, i)
- __free_page(bvec->bv_page);
-
+ bio_free_pages(bio);
put_io_block(lc);
bio_put(bio);
}
diff --git a/drivers/md/dm-rq.c b/drivers/md/dm-rq.c
index 1ca7463e8bb2..ee48230a2952 100644
--- a/drivers/md/dm-rq.c
+++ b/drivers/md/dm-rq.c
@@ -955,7 +955,7 @@ int dm_mq_init_request_queue(struct mapped_device *md, struct dm_table *t)
dm_init_md_queue(md);
/* backfill 'mq' sysfs registration normally done in blk_register_queue */
- blk_mq_register_disk(md->disk);
+ blk_mq_register_dev(disk_to_dev(md->disk), q);
return 0;
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index 21dc00eb1989..1961d827dbd1 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -145,12 +145,8 @@ static void * r1buf_pool_alloc(gfp_t gfp_flags, void *data)
return r1_bio;
out_free_pages:
- while (--j >= 0) {
- struct bio_vec *bv;
-
- bio_for_each_segment_all(bv, r1_bio->bios[j], i)
- __free_page(bv->bv_page);
- }
+ while (--j >= 0)
+ bio_free_pages(r1_bio->bios[j]);
out_free_bio:
while (++j < pi->raid_disks)
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index 2feacc70bf61..4669c052239e 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -156,12 +156,14 @@ static void nvme_free_ns(struct kref *kref)
{
struct nvme_ns *ns = container_of(kref, struct nvme_ns, kref);
- if (ns->type == NVME_NS_LIGHTNVM)
- nvme_nvm_unregister(ns->queue, ns->disk->disk_name);
+ if (ns->ndev)
+ nvme_nvm_unregister(ns);
- spin_lock(&dev_list_lock);
- ns->disk->private_data = NULL;
- spin_unlock(&dev_list_lock);
+ if (ns->disk) {
+ spin_lock(&dev_list_lock);
+ ns->disk->private_data = NULL;
+ spin_unlock(&dev_list_lock);
+ }
put_disk(ns->disk);
ida_simple_remove(&ns->ctrl->ns_ida, ns->instance);
@@ -597,7 +599,7 @@ int nvme_identify_ns(struct nvme_ctrl *dev, unsigned nsid,
}
int nvme_get_features(struct nvme_ctrl *dev, unsigned fid, unsigned nsid,
- dma_addr_t dma_addr, u32 *result)
+ void *buffer, size_t buflen, u32 *result)
{
struct nvme_command c;
struct nvme_completion cqe;
@@ -606,10 +608,9 @@ int nvme_get_features(struct nvme_ctrl *dev, unsigned fid, unsigned nsid,
memset(&c, 0, sizeof(c));
c.features.opcode = nvme_admin_get_features;
c.features.nsid = cpu_to_le32(nsid);
- c.features.dptr.prp1 = cpu_to_le64(dma_addr);
c.features.fid = cpu_to_le32(fid);
- ret = __nvme_submit_sync_cmd(dev->admin_q, &c, &cqe, NULL, 0, 0,
+ ret = __nvme_submit_sync_cmd(dev->admin_q, &c, &cqe, buffer, buflen, 0,
NVME_QID_ANY, 0, 0);
if (ret >= 0 && result)
*result = le32_to_cpu(cqe.result);
@@ -617,7 +618,7 @@ int nvme_get_features(struct nvme_ctrl *dev, unsigned fid, unsigned nsid,
}
int nvme_set_features(struct nvme_ctrl *dev, unsigned fid, unsigned dword11,
- dma_addr_t dma_addr, u32 *result)
+ void *buffer, size_t buflen, u32 *result)
{
struct nvme_command c;
struct nvme_completion cqe;
@@ -625,12 +626,11 @@ int nvme_set_features(struct nvme_ctrl *dev, unsigned fid, unsigned dword11,
memset(&c, 0, sizeof(c));
c.features.opcode = nvme_admin_set_features;
- c.features.dptr.prp1 = cpu_to_le64(dma_addr);
c.features.fid = cpu_to_le32(fid);
c.features.dword11 = cpu_to_le32(dword11);
- ret = __nvme_submit_sync_cmd(dev->admin_q, &c, &cqe, NULL, 0, 0,
- NVME_QID_ANY, 0, 0);
+ ret = __nvme_submit_sync_cmd(dev->admin_q, &c, &cqe,
+ buffer, buflen, 0, NVME_QID_ANY, 0, 0);
if (ret >= 0 && result)
*result = le32_to_cpu(cqe.result);
return ret;
@@ -664,7 +664,7 @@ int nvme_set_queue_count(struct nvme_ctrl *ctrl, int *count)
u32 result;
int status, nr_io_queues;
- status = nvme_set_features(ctrl, NVME_FEAT_NUM_QUEUES, q_count, 0,
+ status = nvme_set_features(ctrl, NVME_FEAT_NUM_QUEUES, q_count, NULL, 0,
&result);
if (status < 0)
return status;
@@ -888,42 +888,32 @@ static void nvme_config_discard(struct nvme_ns *ns)
queue_flag_set_unlocked(QUEUE_FLAG_DISCARD, ns->queue);
}
-static int nvme_revalidate_disk(struct gendisk *disk)
+static int nvme_revalidate_ns(struct nvme_ns *ns, struct nvme_id_ns **id)
{
- struct nvme_ns *ns = disk->private_data;
- struct nvme_id_ns *id;
- u8 lbaf, pi_type;
- u16 old_ms;
- unsigned short bs;
-
- if (test_bit(NVME_NS_DEAD, &ns->flags)) {
- set_capacity(disk, 0);
- return -ENODEV;
- }
- if (nvme_identify_ns(ns->ctrl, ns->ns_id, &id)) {
- dev_warn(disk_to_dev(ns->disk), "%s: Identify failure\n",
- __func__);
- return -ENODEV;
- }
- if (id->ncap == 0) {
- kfree(id);
+ if (nvme_identify_ns(ns->ctrl, ns->ns_id, id)) {
+ dev_warn(ns->ctrl->dev, "%s: Identify failure\n", __func__);
return -ENODEV;
}
- if (nvme_nvm_ns_supported(ns, id) && ns->type != NVME_NS_LIGHTNVM) {
- if (nvme_nvm_register(ns->queue, disk->disk_name)) {
- dev_warn(disk_to_dev(ns->disk),
- "%s: LightNVM init failure\n", __func__);
- kfree(id);
- return -ENODEV;
- }
- ns->type = NVME_NS_LIGHTNVM;
+ if ((*id)->ncap == 0) {
+ kfree(*id);
+ return -ENODEV;
}
if (ns->ctrl->vs >= NVME_VS(1, 1))
- memcpy(ns->eui, id->eui64, sizeof(ns->eui));
+ memcpy(ns->eui, (*id)->eui64, sizeof(ns->eui));
if (ns->ctrl->vs >= NVME_VS(1, 2))
- memcpy(ns->uuid, id->nguid, sizeof(ns->uuid));
+ memcpy(ns->uuid, (*id)->nguid, sizeof(ns->uuid));
+
+ return 0;
+}
+
+static void __nvme_revalidate_disk(struct gendisk *disk, struct nvme_id_ns *id)
+{
+ struct nvme_ns *ns = disk->private_data;
+ u8 lbaf, pi_type;
+ u16 old_ms;
+ unsigned short bs;
old_ms = ns->ms;
lbaf = id->flbas & NVME_NS_FLBAS_LBA_MASK;
@@ -962,8 +952,26 @@ static int nvme_revalidate_disk(struct gendisk *disk)
if (ns->ctrl->oncs & NVME_CTRL_ONCS_DSM)
nvme_config_discard(ns);
blk_mq_unfreeze_queue(disk->queue);
+}
+
+static int nvme_revalidate_disk(struct gendisk *disk)
+{
+ struct nvme_ns *ns = disk->private_data;
+ struct nvme_id_ns *id = NULL;
+ int ret;
+
+ if (test_bit(NVME_NS_DEAD, &ns->flags)) {
+ set_capacity(disk, 0);
+ return -ENODEV;
+ }
+
+ ret = nvme_revalidate_ns(ns, &id);
+ if (ret)
+ return ret;
+ __nvme_revalidate_disk(disk, id);
kfree(id);
+
return 0;
}
@@ -1425,7 +1433,7 @@ static DEVICE_ATTR(rescan_controller, S_IWUSR, NULL, nvme_sysfs_rescan);
static ssize_t wwid_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
- struct nvme_ns *ns = dev_to_disk(dev)->private_data;
+ struct nvme_ns *ns = nvme_get_ns_from_dev(dev);
struct nvme_ctrl *ctrl = ns->ctrl;
int serial_len = sizeof(ctrl->serial);
int model_len = sizeof(ctrl->model);
@@ -1449,7 +1457,7 @@ static DEVICE_ATTR(wwid, S_IRUGO, wwid_show, NULL);
static ssize_t uuid_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
- struct nvme_ns *ns = dev_to_disk(dev)->private_data;
+ struct nvme_ns *ns = nvme_get_ns_from_dev(dev);
return sprintf(buf, "%pU\n", ns->uuid);
}
static DEVICE_ATTR(uuid, S_IRUGO, uuid_show, NULL);
@@ -1457,7 +1465,7 @@ static DEVICE_ATTR(uuid, S_IRUGO, uuid_show, NULL);
static ssize_t eui_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
- struct nvme_ns *ns = dev_to_disk(dev)->private_data;
+ struct nvme_ns *ns = nvme_get_ns_from_dev(dev);
return sprintf(buf, "%8phd\n", ns->eui);
}
static DEVICE_ATTR(eui, S_IRUGO, eui_show, NULL);
@@ -1465,7 +1473,7 @@ static DEVICE_ATTR(eui, S_IRUGO, eui_show, NULL);
static ssize_t nsid_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
- struct nvme_ns *ns = dev_to_disk(dev)->private_data;
+ struct nvme_ns *ns = nvme_get_ns_from_dev(dev);
return sprintf(buf, "%d\n", ns->ns_id);
}
static DEVICE_ATTR(nsid, S_IRUGO, nsid_show, NULL);
@@ -1482,7 +1490,7 @@ static umode_t nvme_ns_attrs_are_visible(struct kobject *kobj,
struct attribute *a, int n)
{
struct device *dev = container_of(kobj, struct device, kobj);
- struct nvme_ns *ns = dev_to_disk(dev)->private_data;
+ struct nvme_ns *ns = nvme_get_ns_from_dev(dev);
if (a == &dev_attr_uuid.attr) {
if (!memchr_inv(ns->uuid, 0, sizeof(ns->uuid)))
@@ -1642,6 +1650,8 @@ static void nvme_alloc_ns(struct nvme_ctrl *ctrl, unsigned nsid)
{
struct nvme_ns *ns;
struct gendisk *disk;
+ struct nvme_id_ns *id;
+ char disk_name[DISK_NAME_LEN];
int node = dev_to_node(ctrl->dev);
ns = kzalloc_node(sizeof(*ns), GFP_KERNEL, node);
@@ -1659,34 +1669,49 @@ static void nvme_alloc_ns(struct nvme_ctrl *ctrl, unsigned nsid)
ns->queue->queuedata = ns;
ns->ctrl = ctrl;
- disk = alloc_disk_node(0, node);
- if (!disk)
- goto out_free_queue;
-
kref_init(&ns->kref);
ns->ns_id = nsid;
- ns->disk = disk;
ns->lba_shift = 9; /* set to a default value for 512 until disk is validated */
-
blk_queue_logical_block_size(ns->queue, 1 << ns->lba_shift);
nvme_set_queue_limits(ctrl, ns->queue);
- disk->fops = &nvme_fops;
- disk->private_data = ns;
- disk->queue = ns->queue;
- disk->flags = GENHD_FL_EXT_DEVT;
- sprintf(disk->disk_name, "nvme%dn%d", ctrl->instance, ns->instance);
+ sprintf(disk_name, "nvme%dn%d", ctrl->instance, ns->instance);
+
+ if (nvme_revalidate_ns(ns, &id))
+ goto out_free_queue;
- if (nvme_revalidate_disk(ns->disk))
- goto out_free_disk;
+ if (nvme_nvm_ns_supported(ns, id)) {
+ if (nvme_nvm_register(ns, disk_name, node,
+ &nvme_ns_attr_group)) {
+ dev_warn(ctrl->dev, "%s: LightNVM init failure\n",
+ __func__);
+ goto out_free_id;
+ }
+ } else {
+ disk = alloc_disk_node(0, node);
+ if (!disk)
+ goto out_free_id;
+
+ disk->fops = &nvme_fops;
+ disk->private_data = ns;
+ disk->queue = ns->queue;
+ disk->flags = GENHD_FL_EXT_DEVT;
+ memcpy(disk->disk_name, disk_name, DISK_NAME_LEN);
+ ns->disk = disk;
+
+ __nvme_revalidate_disk(disk, id);
+ }
mutex_lock(&ctrl->namespaces_mutex);
list_add_tail(&ns->list, &ctrl->namespaces);
mutex_unlock(&ctrl->namespaces_mutex);
kref_get(&ctrl->kref);
- if (ns->type == NVME_NS_LIGHTNVM)
+
+ kfree(id);
+
+ if (ns->ndev)
return;
device_add_disk(ctrl->device, ns->disk);
@@ -1695,8 +1720,8 @@ static void nvme_alloc_ns(struct nvme_ctrl *ctrl, unsigned nsid)
pr_warn("%s: failed to create sysfs group for identification\n",
ns->disk->disk_name);
return;
- out_free_disk:
- kfree(disk);
+ out_free_id:
+ kfree(id);
out_free_queue:
blk_cleanup_queue(ns->queue);
out_release_instance:
@@ -1710,7 +1735,7 @@ static void nvme_ns_remove(struct nvme_ns *ns)
if (test_and_set_bit(NVME_NS_REMOVING, &ns->flags))
return;
- if (ns->disk->flags & GENHD_FL_UP) {
+ if (ns->disk && ns->disk->flags & GENHD_FL_UP) {
if (blk_get_integrity(ns->disk))
blk_integrity_unregister(ns->disk);
sysfs_remove_group(&disk_to_dev(ns->disk)->kobj,
@@ -1733,7 +1758,7 @@ static void nvme_validate_ns(struct nvme_ctrl *ctrl, unsigned nsid)
ns = nvme_find_get_ns(ctrl, nsid);
if (ns) {
- if (revalidate_disk(ns->disk))
+ if (ns->disk && revalidate_disk(ns->disk))
nvme_ns_remove(ns);
nvme_put_ns(ns);
} else
@@ -2038,7 +2063,7 @@ void nvme_kill_queues(struct nvme_ctrl *ctrl)
* Revalidating a dead namespace sets capacity to 0. This will
* end buffered writers dirtying pages that can't be synced.
*/
- if (!test_and_set_bit(NVME_NS_DEAD, &ns->flags))
+ if (ns->disk && !test_and_set_bit(NVME_NS_DEAD, &ns->flags))
revalidate_disk(ns->disk);
blk_set_queue_dying(ns->queue);
diff --git a/drivers/nvme/host/fabrics.c b/drivers/nvme/host/fabrics.c
index 4eff49174466..5a3f008d3480 100644
--- a/drivers/nvme/host/fabrics.c
+++ b/drivers/nvme/host/fabrics.c
@@ -111,8 +111,19 @@ static void nvmf_host_put(struct nvmf_host *host)
*/
int nvmf_get_address(struct nvme_ctrl *ctrl, char *buf, int size)
{
- return snprintf(buf, size, "traddr=%s,trsvcid=%s\n",
- ctrl->opts->traddr, ctrl->opts->trsvcid);
+ int len = 0;
+
+ if (ctrl->opts->mask & NVMF_OPT_TRADDR)
+ len += snprintf(buf, size, "traddr=%s", ctrl->opts->traddr);
+ if (ctrl->opts->mask & NVMF_OPT_TRSVCID)
+ len += snprintf(buf + len, size - len, "%strsvcid=%s",
+ (len) ? "," : "", ctrl->opts->trsvcid);
+ if (ctrl->opts->mask & NVMF_OPT_HOST_TRADDR)
+ len += snprintf(buf + len, size - len, "%shost_traddr=%s",
+ (len) ? "," : "", ctrl->opts->host_traddr);
+ len += snprintf(buf + len, size - len, "\n");
+
+ return len;
}
EXPORT_SYMBOL_GPL(nvmf_get_address);
@@ -519,6 +530,7 @@ static const match_table_t opt_tokens = {
{ NVMF_OPT_RECONNECT_DELAY, "reconnect_delay=%d" },
{ NVMF_OPT_KATO, "keep_alive_tmo=%d" },
{ NVMF_OPT_HOSTNQN, "hostnqn=%s" },
+ { NVMF_OPT_HOST_TRADDR, "host_traddr=%s" },
{ NVMF_OPT_ERR, NULL }
};
@@ -675,6 +687,14 @@ static int nvmf_parse_options(struct nvmf_ctrl_options *opts,
}
opts->reconnect_delay = token;
break;
+ case NVMF_OPT_HOST_TRADDR:
+ p = match_strdup(args);
+ if (!p) {
+ ret = -ENOMEM;
+ goto out;
+ }
+ opts->host_traddr = p;
+ break;
default:
pr_warn("unknown parameter or missing value '%s' in ctrl creation request\n",
p);
@@ -741,6 +761,7 @@ void nvmf_free_options(struct nvmf_ctrl_options *opts)
kfree(opts->traddr);
kfree(opts->trsvcid);
kfree(opts->subsysnqn);
+ kfree(opts->host_traddr);
kfree(opts);
}
EXPORT_SYMBOL_GPL(nvmf_free_options);
diff --git a/drivers/nvme/host/fabrics.h b/drivers/nvme/host/fabrics.h
index 46e460aee52d..924145c979f1 100644
--- a/drivers/nvme/host/fabrics.h
+++ b/drivers/nvme/host/fabrics.h
@@ -52,6 +52,7 @@ enum {
NVMF_OPT_KATO = 1 << 7,
NVMF_OPT_HOSTNQN = 1 << 8,
NVMF_OPT_RECONNECT_DELAY = 1 << 9,
+ NVMF_OPT_HOST_TRADDR = 1 << 10,
};
/**
@@ -64,9 +65,12 @@ enum {
* being added.
* @subsysnqn: Hold the fully qualified NQN subystem name (format defined
* in the NVMe specification, "NVMe Qualified Names").
- * @traddr: network address that will be used by the host to communicate
- * to the added NVMe controller.
- * @trsvcid: network port used for host-controller communication.
+ * @traddr: The transport-specific TRADDR field for a port on the
+ * subsystem which is adding a controller.
+ * @trsvcid: The transport-specific TRSVCID field for a port on the
+ * subsystem which is adding a controller.
+ * @host_traddr: A transport-specific field identifying the NVME host port
+ * to use for the connection to the controller.
* @queue_size: Number of IO queue elements.
* @nr_io_queues: Number of controller IO queues that will be established.
* @reconnect_delay: Time between two consecutive reconnect attempts.
@@ -80,6 +84,7 @@ struct nvmf_ctrl_options {
char *subsysnqn;
char *traddr;
char *trsvcid;
+ char *host_traddr;
size_t queue_size;
unsigned int nr_io_queues;
unsigned int reconnect_delay;
diff --git a/drivers/nvme/host/lightnvm.c b/drivers/nvme/host/lightnvm.c
index 63f483daf930..f5e3011e31fc 100644
--- a/drivers/nvme/host/lightnvm.c
+++ b/drivers/nvme/host/lightnvm.c
@@ -475,7 +475,7 @@ static inline void nvme_nvm_rqtocmd(struct request *rq, struct nvm_rq *rqd,
if (rqd->opcode == NVM_OP_HBWRITE || rqd->opcode == NVM_OP_HBREAD)
c->hb_rw.slba = cpu_to_le64(nvme_block_nr(ns,
- rqd->bio->bi_iter.bi_sector));
+ rqd->bio->bi_iter.bi_sector));
}
static void nvme_nvm_end_io(struct request *rq, int error)
@@ -592,14 +592,37 @@ static struct nvm_dev_ops nvme_nvm_dev_ops = {
.max_phys_sect = 64,
};
-int nvme_nvm_register(struct request_queue *q, char *disk_name)
+int nvme_nvm_register(struct nvme_ns *ns, char *disk_name, int node,
+ const struct attribute_group *attrs)
{
- return nvm_register(q, disk_name, &nvme_nvm_dev_ops);
+ struct request_queue *q = ns->queue;
+ struct nvm_dev *dev;
+ int ret;
+
+ dev = nvm_alloc_dev(node);
+ if (!dev)
+ return -ENOMEM;
+
+ dev->q = q;
+ memcpy(dev->name, disk_name, DISK_NAME_LEN);
+ dev->ops = &nvme_nvm_dev_ops;
+ dev->parent_dev = ns->ctrl->device;
+ dev->private_data = ns;
+ ns->ndev = dev;
+
+ ret = nvm_register(dev);
+
+ ns->lba_shift = ilog2(dev->sec_size) - 9;
+
+ if (sysfs_create_group(&dev->dev.kobj, attrs))
+ pr_warn("%s: failed to create sysfs group for identification\n",
+ disk_name);
+ return ret;
}
-void nvme_nvm_unregister(struct request_queue *q, char *disk_name)
+void nvme_nvm_unregister(struct nvme_ns *ns)
{
- nvm_unregister(disk_name);
+ nvm_unregister(ns->ndev);
}
/* move to shared place when used in multiple places. */
diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h
index ab18b78102bf..b0a9ec681685 100644
--- a/drivers/nvme/host/nvme.h
+++ b/drivers/nvme/host/nvme.h
@@ -18,6 +18,7 @@
#include <linux/pci.h>
#include <linux/kref.h>
#include <linux/blk-mq.h>
+#include <linux/lightnvm.h>
enum {
/*
@@ -154,6 +155,7 @@ struct nvme_ns {
struct nvme_ctrl *ctrl;
struct request_queue *queue;
struct gendisk *disk;
+ struct nvm_dev *ndev;
struct kref kref;
int instance;
@@ -165,7 +167,6 @@ struct nvme_ns {
u16 ms;
bool ext;
u8 pi_type;
- int type;
unsigned long flags;
#define NVME_NS_REMOVING 0
@@ -292,9 +293,9 @@ int nvme_identify_ns(struct nvme_ctrl *dev, unsigned nsid,
struct nvme_id_ns **id);
int nvme_get_log_page(struct nvme_ctrl *dev, struct nvme_smart_log **log);
int nvme_get_features(struct nvme_ctrl *dev, unsigned fid, unsigned nsid,
- dma_addr_t dma_addr, u32 *result);
+ void *buffer, size_t buflen, u32 *result);
int nvme_set_features(struct nvme_ctrl *dev, unsigned fid, unsigned dword11,
- dma_addr_t dma_addr, u32 *result);
+ void *buffer, size_t buflen, u32 *result);
int nvme_set_queue_count(struct nvme_ctrl *ctrl, int *count);
void nvme_start_keep_alive(struct nvme_ctrl *ctrl);
void nvme_stop_keep_alive(struct nvme_ctrl *ctrl);
@@ -307,20 +308,35 @@ int nvme_sg_get_version_num(int __user *ip);
#ifdef CONFIG_NVM
int nvme_nvm_ns_supported(struct nvme_ns *ns, struct nvme_id_ns *id);
-int nvme_nvm_register(struct request_queue *q, char *disk_name);
-void nvme_nvm_unregister(struct request_queue *q, char *disk_name);
+int nvme_nvm_register(struct nvme_ns *ns, char *disk_name, int node,
+ const struct attribute_group *attrs);
+void nvme_nvm_unregister(struct nvme_ns *ns);
+
+static inline struct nvme_ns *nvme_get_ns_from_dev(struct device *dev)
+{
+ if (dev->type->devnode)
+ return dev_to_disk(dev)->private_data;
+
+ return (container_of(dev, struct nvm_dev, dev))->private_data;
+}
#else
-static inline int nvme_nvm_register(struct request_queue *q, char *disk_name)
+static inline int nvme_nvm_register(struct nvme_ns *ns, char *disk_name,
+ int node,
+ const struct attribute_group *attrs)
{
return 0;
}
-static inline void nvme_nvm_unregister(struct request_queue *q, char *disk_name) {};
+static inline void nvme_nvm_unregister(struct nvme_ns *ns) {};
static inline int nvme_nvm_ns_supported(struct nvme_ns *ns, struct nvme_id_ns *id)
{
return 0;
}
+static inline struct nvme_ns *nvme_get_ns_from_dev(struct device *dev)
+{
+ return dev_to_disk(dev)->private_data;
+}
#endif /* CONFIG_NVM */
int __init nvme_core_init(void);
diff --git a/drivers/nvme/host/scsi.c b/drivers/nvme/host/scsi.c
index e947e298a737..c2a0a1c7d05d 100644
--- a/drivers/nvme/host/scsi.c
+++ b/drivers/nvme/host/scsi.c
@@ -72,15 +72,6 @@ static int sg_version_num = 30534; /* 2 digits for each component */
#define ALL_LUNS_RETURNED 0x02
#define ALL_WELL_KNOWN_LUNS_RETURNED 0x01
#define RESTRICTED_LUNS_RETURNED 0x00
-#define NVME_POWER_STATE_START_VALID 0x00
-#define NVME_POWER_STATE_ACTIVE 0x01
-#define NVME_POWER_STATE_IDLE 0x02
-#define NVME_POWER_STATE_STANDBY 0x03
-#define NVME_POWER_STATE_LU_CONTROL 0x07
-#define POWER_STATE_0 0
-#define POWER_STATE_1 1
-#define POWER_STATE_2 2
-#define POWER_STATE_3 3
#define DOWNLOAD_SAVE_ACTIVATE 0x05
#define DOWNLOAD_SAVE_DEFER_ACTIVATE 0x0E
#define ACTIVATE_DEFERRED_MICROCODE 0x0F
@@ -915,7 +906,7 @@ static int nvme_trans_log_temperature(struct nvme_ns *ns, struct sg_io_hdr *hdr,
kfree(smart_log);
/* Get Features for Temp Threshold */
- res = nvme_get_features(ns->ctrl, NVME_FEAT_TEMP_THRESH, 0, 0,
+ res = nvme_get_features(ns->ctrl, NVME_FEAT_TEMP_THRESH, 0, NULL, 0,
&feature_resp);
if (res != NVME_SC_SUCCESS)
temp_c_thresh = LOG_TEMP_UNKNOWN;
@@ -1048,7 +1039,7 @@ static int nvme_trans_fill_caching_page(struct nvme_ns *ns,
if (len < MODE_PAGE_CACHING_LEN)
return -EINVAL;
- nvme_sc = nvme_get_features(ns->ctrl, NVME_FEAT_VOLATILE_WC, 0, 0,
+ nvme_sc = nvme_get_features(ns->ctrl, NVME_FEAT_VOLATILE_WC, 0, NULL, 0,
&feature_resp);
res = nvme_trans_status_code(hdr, nvme_sc);
if (res)
@@ -1229,64 +1220,6 @@ static void nvme_trans_fill_read_cap(u8 *response, struct nvme_id_ns *id_ns,
/* Start Stop Unit Helper Functions */
-static int nvme_trans_power_state(struct nvme_ns *ns, struct sg_io_hdr *hdr,
- u8 pc, u8 pcmod, u8 start)
-{
- int res;
- int nvme_sc;
- struct nvme_id_ctrl *id_ctrl;
- int lowest_pow_st; /* max npss = lowest power consumption */
- unsigned ps_desired = 0;
-
- nvme_sc = nvme_identify_ctrl(ns->ctrl, &id_ctrl);
- res = nvme_trans_status_code(hdr, nvme_sc);
- if (res)
- return res;
-
- lowest_pow_st = max(POWER_STATE_0, (int)(id_ctrl->npss - 1));
- kfree(id_ctrl);
-
- switch (pc) {
- case NVME_POWER_STATE_START_VALID:
- /* Action unspecified if POWER CONDITION MODIFIER != 0 */
- if (pcmod == 0 && start == 0x1)
- ps_desired = POWER_STATE_0;
- if (pcmod == 0 && start == 0x0)
- ps_desired = lowest_pow_st;
- break;
- case NVME_POWER_STATE_ACTIVE:
- /* Action unspecified if POWER CONDITION MODIFIER != 0 */
- if (pcmod == 0)
- ps_desired = POWER_STATE_0;
- break;
- case NVME_POWER_STATE_IDLE:
- /* Action unspecified if POWER CONDITION MODIFIER != [0,1,2] */
- if (pcmod == 0x0)
- ps_desired = POWER_STATE_1;
- else if (pcmod == 0x1)
- ps_desired = POWER_STATE_2;
- else if (pcmod == 0x2)
- ps_desired = POWER_STATE_3;
- break;
- case NVME_POWER_STATE_STANDBY:
- /* Action unspecified if POWER CONDITION MODIFIER != [0,1] */
- if (pcmod == 0x0)
- ps_desired = max(POWER_STATE_0, (lowest_pow_st - 2));
- else if (pcmod == 0x1)
- ps_desired = max(POWER_STATE_0, (lowest_pow_st - 1));
- break;
- case NVME_POWER_STATE_LU_CONTROL:
- default:
- res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
- ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB,
- SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
- break;
- }
- nvme_sc = nvme_set_features(ns->ctrl, NVME_FEAT_POWER_MGMT, ps_desired, 0,
- NULL);
- return nvme_trans_status_code(hdr, nvme_sc);
-}
-
static int nvme_trans_send_activate_fw_cmd(struct nvme_ns *ns, struct sg_io_hdr *hdr,
u8 buffer_id)
{
@@ -1395,7 +1328,7 @@ static int nvme_trans_modesel_get_mp(struct nvme_ns *ns, struct sg_io_hdr *hdr,
case MODE_PAGE_CACHING:
dword11 = ((mode_page[2] & CACHING_MODE_PAGE_WCE_MASK) ? 1 : 0);
nvme_sc = nvme_set_features(ns->ctrl, NVME_FEAT_VOLATILE_WC,
- dword11, 0, NULL);
+ dword11, NULL, 0, NULL);
res = nvme_trans_status_code(hdr, nvme_sc);
break;
case MODE_PAGE_CONTROL:
@@ -2235,11 +2168,10 @@ static int nvme_trans_synchronize_cache(struct nvme_ns *ns,
static int nvme_trans_start_stop(struct nvme_ns *ns, struct sg_io_hdr *hdr,
u8 *cmd)
{
- u8 immed, pcmod, pc, no_flush, start;
+ u8 immed, pcmod, no_flush, start;
immed = cmd[1] & 0x01;
pcmod = cmd[3] & 0x0f;
- pc = (cmd[4] & 0xf0) >> 4;
no_flush = cmd[4] & 0x04;
start = cmd[4] & 0x01;
@@ -2254,8 +2186,8 @@ static int nvme_trans_start_stop(struct nvme_ns *ns, struct sg_io_hdr *hdr,
if (res)
return res;
}
- /* Setup the expected power state transition */
- return nvme_trans_power_state(ns, hdr, pc, pcmod, start);
+
+ return 0;
}
}
diff --git a/drivers/nvme/target/admin-cmd.c b/drivers/nvme/target/admin-cmd.c
index 47c564b5a289..7ab9c9381b98 100644
--- a/drivers/nvme/target/admin-cmd.c
+++ b/drivers/nvme/target/admin-cmd.c
@@ -14,6 +14,7 @@
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/module.h>
#include <generated/utsrelease.h>
+#include <asm/unaligned.h>
#include "nvmet.h"
u32 nvmet_get_log_page_len(struct nvme_command *cmd)
@@ -29,8 +30,84 @@ u32 nvmet_get_log_page_len(struct nvme_command *cmd)
return len;
}
+static u16 nvmet_get_smart_log_nsid(struct nvmet_req *req,
+ struct nvme_smart_log *slog)
+{
+ u16 status;
+ struct nvmet_ns *ns;
+ u64 host_reads, host_writes, data_units_read, data_units_written;
+
+ status = NVME_SC_SUCCESS;
+ ns = nvmet_find_namespace(req->sq->ctrl, req->cmd->get_log_page.nsid);
+ if (!ns) {
+ status = NVME_SC_INVALID_NS;
+ pr_err("nvmet : Counld not find namespace id : %d\n",
+ le32_to_cpu(req->cmd->get_log_page.nsid));
+ goto out;
+ }
+
+ host_reads = part_stat_read(ns->bdev->bd_part, ios[READ]);
+ data_units_read = part_stat_read(ns->bdev->bd_part, sectors[READ]);
+ host_writes = part_stat_read(ns->bdev->bd_part, ios[WRITE]);
+ data_units_written = part_stat_read(ns->bdev->bd_part, sectors[WRITE]);
+
+ put_unaligned_le64(host_reads, &slog->host_reads[0]);
+ put_unaligned_le64(data_units_read, &slog->data_units_read[0]);
+ put_unaligned_le64(host_writes, &slog->host_writes[0]);
+ put_unaligned_le64(data_units_written, &slog->data_units_written[0]);
+ nvmet_put_namespace(ns);
+out:
+ return status;
+}
+
+static u16 nvmet_get_smart_log_all(struct nvmet_req *req,
+ struct nvme_smart_log *slog)
+{
+ u16 status;
+ u64 host_reads = 0, host_writes = 0;
+ u64 data_units_read = 0, data_units_written = 0;
+ struct nvmet_ns *ns;
+ struct nvmet_ctrl *ctrl;
+
+ status = NVME_SC_SUCCESS;
+ ctrl = req->sq->ctrl;
+
+ rcu_read_lock();
+ list_for_each_entry_rcu(ns, &ctrl->subsys->namespaces, dev_link) {
+ host_reads += part_stat_read(ns->bdev->bd_part, ios[READ]);
+ data_units_read +=
+ part_stat_read(ns->bdev->bd_part, sectors[READ]);
+ host_writes += part_stat_read(ns->bdev->bd_part, ios[WRITE]);
+ data_units_written +=
+ part_stat_read(ns->bdev->bd_part, sectors[WRITE]);
+
+ }
+ rcu_read_unlock();
+
+ put_unaligned_le64(host_reads, &slog->host_reads[0]);
+ put_unaligned_le64(data_units_read, &slog->data_units_read[0]);
+ put_unaligned_le64(host_writes, &slog->host_writes[0]);
+ put_unaligned_le64(data_units_written, &slog->data_units_written[0]);
+
+ return status;
+}
+
+static u16 nvmet_get_smart_log(struct nvmet_req *req,
+ struct nvme_smart_log *slog)
+{
+ u16 status;
+
+ WARN_ON(req == NULL || slog == NULL);
+ if (req->cmd->get_log_page.nsid == 0xFFFFFFFF)
+ status = nvmet_get_smart_log_all(req, slog);
+ else
+ status = nvmet_get_smart_log_nsid(req, slog);
+ return status;
+}
+
static void nvmet_execute_get_log_page(struct nvmet_req *req)
{
+ struct nvme_smart_log *smart_log;
size_t data_len = nvmet_get_log_page_len(req->cmd);
void *buf;
u16 status = 0;
@@ -59,6 +136,16 @@ static void nvmet_execute_get_log_page(struct nvmet_req *req)
* available (e.g. units or commands read/written) those aren't
* persistent over power loss.
*/
+ if (data_len != sizeof(*smart_log)) {
+ status = NVME_SC_INTERNAL;
+ goto err;
+ }
+ smart_log = buf;
+ status = nvmet_get_smart_log(req, smart_log);
+ if (status) {
+ memset(buf, '\0', data_len);
+ goto err;
+ }
break;
case 0x03:
/*
@@ -73,6 +160,7 @@ static void nvmet_execute_get_log_page(struct nvmet_req *req)
status = nvmet_copy_to_sgl(req, 0, buf, data_len);
+err:
kfree(buf);
out:
nvmet_req_complete(req, status);
diff --git a/drivers/nvme/target/io-cmd.c b/drivers/nvme/target/io-cmd.c
index 2cd069b691ae..4a96c2049b7b 100644
--- a/drivers/nvme/target/io-cmd.c
+++ b/drivers/nvme/target/io-cmd.c
@@ -58,6 +58,7 @@ static void nvmet_execute_rw(struct nvmet_req *req)
if (req->cmd->rw.opcode == nvme_cmd_write) {
op = REQ_OP_WRITE;
+ op_flags = WRITE_ODIRECT;
if (req->cmd->rw.control & cpu_to_le16(NVME_RW_FUA))
op_flags |= REQ_FUA;
} else {
@@ -205,7 +206,7 @@ int nvmet_parse_io_cmd(struct nvmet_req *req)
return 0;
case nvme_cmd_dsm:
req->execute = nvmet_execute_dsm;
- req->data_len = le32_to_cpu(cmd->dsm.nr) *
+ req->data_len = le32_to_cpu(cmd->dsm.nr + 1) *
sizeof(struct nvme_dsm_range);
return 0;
default:
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-19 02:01:38 +0100