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Commit 2e572599 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

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

Pull block fixes from Jens Axboe:
 "A few fixes for the current series. This contains:

   - Two fixes for NVMe:

     One fixes a reset race that can be triggered by repeated
     insert/removal of the module.

     The other fixes an issue on some platforms, where we get probe
     timeouts since legacy interrupts isn't working.  This used not to
     be a problem since we had the worker thread poll for completions,
     but since that was killed off, it means those poor souls can't
     successfully probe their NVMe device.  Use a proper IRQ check and
     probe (msi-x -> msi ->legacy), like most other drivers to work
     around this.  Both from Keith.

   - A loop corruption issue with offset in iters, from Ming Lei.

   - A fix for not having the partition stat per cpu ref count
     initialized before sending out the KOBJ_ADD, which could cause user
     space to access the counter prior to initialization.  Also from
     Ming Lei.

   - A fix for using the wrong congestion state, from Kaixu Xia"

* 'for-linus' of git://git.kernel.dk/linux-block:
  block: loop: fix filesystem corruption in case of aio/dio
  NVMe: Always use MSI/MSI-x interrupts
  NVMe: Fix reset/remove race
  writeback: fix the wrong congested state variable definition
  block: partition: initialize percpuref before sending out KOBJ_ADD
parents f3c9a1ab a7297a6a

block/partition-generic.c

+10 −3
Original line number Diff line number Diff line
@@ -361,14 +361,19 @@ struct hd_struct *add_partition(struct gendisk *disk, int partno, 
			goto out_del;

	}



	err = hd_ref_init(p);

	if (err) {

		if (flags & ADDPART_FLAG_WHOLEDISK)

			goto out_remove_file;

		goto out_del;

	}



	/* everything is up and running, commence */

	rcu_assign_pointer(ptbl->part[partno], p);



	/* suppress uevent if the disk suppresses it */

	if (!dev_get_uevent_suppress(ddev))

		kobject_uevent(&pdev->kobj, KOBJ_ADD);



	if (!hd_ref_init(p))

	return p;



out_free_info:
@@ -378,6 +383,8 @@ struct hd_struct *add_partition(struct gendisk *disk, int partno, 
out_free:

	kfree(p);

	return ERR_PTR(err);

out_remove_file:

	device_remove_file(pdev, &dev_attr_whole_disk);

out_del:

	kobject_put(p->holder_dir);

	device_del(pdev);

drivers/block/loop.c

+6 −0
Original line number Diff line number Diff line
@@ -488,6 +488,12 @@ static int lo_rw_aio(struct loop_device *lo, struct loop_cmd *cmd, 
	bvec = __bvec_iter_bvec(bio->bi_io_vec, bio->bi_iter);

	iov_iter_bvec(&iter, ITER_BVEC | rw, bvec,

		      bio_segments(bio), blk_rq_bytes(cmd->rq));

	/*

	 * This bio may be started from the middle of the 'bvec'

	 * because of bio splitting, so offset from the bvec must

	 * be passed to iov iterator

	 */

	iter.iov_offset = bio->bi_iter.bi_bvec_done;



	cmd->iocb.ki_pos = pos;

	cmd->iocb.ki_filp = file;

drivers/nvme/host/pci.c

+19 −12
Original line number Diff line number Diff line
@@ -1478,8 +1478,7 @@ static int nvme_setup_io_queues(struct nvme_dev *dev) 
	if (result > 0) {

		dev_err(dev->ctrl.device,

			"Could not set queue count (%d)\n", result);

		nr_io_queues = 0;

		result = 0;

		return 0;

	}



	if (dev->cmb && NVME_CMB_SQS(dev->cmbsz)) {
@@ -1513,7 +1512,9 @@ static int nvme_setup_io_queues(struct nvme_dev *dev) 
	 * If we enable msix early due to not intx, disable it again before

	 * setting up the full range we need.

	 */

	if (!pdev->irq)

	if (pdev->msi_enabled)

		pci_disable_msi(pdev);

	else if (pdev->msix_enabled)

		pci_disable_msix(pdev);



	for (i = 0; i < nr_io_queues; i++)
@@ -1696,7 +1697,6 @@ static int nvme_pci_enable(struct nvme_dev *dev) 
	if (pci_enable_device_mem(pdev))

		return result;



	dev->entry[0].vector = pdev->irq;

	pci_set_master(pdev);



	if (dma_set_mask_and_coherent(dev->dev, DMA_BIT_MASK(64)) &&
@@ -1709,12 +1709,17 @@ static int nvme_pci_enable(struct nvme_dev *dev) 
	}



	/*

	 * Some devices don't advertse INTx interrupts, pre-enable a single

	 * MSIX vec for setup. We'll adjust this later.

	 * Some devices and/or platforms don't advertise or work with INTx

	 * interrupts. Pre-enable a single MSIX or MSI vec for setup. We'll

	 * adjust this later.

	 */

	if (!pdev->irq) {

		result = pci_enable_msix(pdev, dev->entry, 1);

		if (result < 0)

	if (pci_enable_msix(pdev, dev->entry, 1)) {

		pci_enable_msi(pdev);

		dev->entry[0].vector = pdev->irq;

	}



	if (!dev->entry[0].vector) {

		result = -ENODEV;

		goto disable;

	}
@@ -1859,6 +1864,9 @@ static void nvme_reset_work(struct work_struct *work) 
	if (dev->ctrl.ctrl_config & NVME_CC_ENABLE)

		nvme_dev_disable(dev, false);



	if (test_bit(NVME_CTRL_REMOVING, &dev->flags))

		goto out;



	set_bit(NVME_CTRL_RESETTING, &dev->flags);



	result = nvme_pci_enable(dev);
@@ -2078,11 +2086,10 @@ static void nvme_remove(struct pci_dev *pdev) 
{

	struct nvme_dev *dev = pci_get_drvdata(pdev);



	del_timer_sync(&dev->watchdog_timer);



	set_bit(NVME_CTRL_REMOVING, &dev->flags);

	pci_set_drvdata(pdev, NULL);

	flush_work(&dev->async_work);

	flush_work(&dev->reset_work);

	flush_work(&dev->scan_work);

	nvme_remove_namespaces(&dev->ctrl);

	nvme_uninit_ctrl(&dev->ctrl);

mm/backing-dev.c

+2 −2
Original line number Diff line number Diff line
@@ -898,7 +898,7 @@ static atomic_t nr_wb_congested[2]; 
void clear_wb_congested(struct bdi_writeback_congested *congested, int sync)

{

	wait_queue_head_t *wqh = &congestion_wqh[sync];

	enum wb_state bit;

	enum wb_congested_state bit;



	bit = sync ? WB_sync_congested : WB_async_congested;

	if (test_and_clear_bit(bit, &congested->state))
@@ -911,7 +911,7 @@ EXPORT_SYMBOL(clear_wb_congested); 


void set_wb_congested(struct bdi_writeback_congested *congested, int sync)

{

	enum wb_state bit;

	enum wb_congested_state bit;



	bit = sync ? WB_sync_congested : WB_async_congested;

	if (!test_and_set_bit(bit, &congested->state))