From: Christoph Hellwig <hch@lst.de>
To: "Dan Williams" <dan.j.williams@intel.com>,
"Jérôme Glisse" <jglisse@redhat.com>,
"Jason Gunthorpe" <jgg@mellanox.com>,
"Ben Skeggs" <bskeggs@redhat.com>
Cc: linux-mm@kvack.org, nouveau@lists.freedesktop.org,
dri-devel@lists.freedesktop.org, linux-nvdimm@lists.01.org,
linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org,
Logan Gunthorpe <logang@deltatee.com>
Subject: [PATCH 09/25] memremap: pass a struct dev_pagemap to ->kill and ->cleanup
Date: Mon, 17 Jun 2019 14:27:17 +0200 [thread overview]
Message-ID: <20190617122733.22432-10-hch@lst.de> (raw)
In-Reply-To: <20190617122733.22432-1-hch@lst.de>
Passing the actual typed structure leads to more understandable code
vs just passing the ref member.
Reported-by: Logan Gunthorpe <logang@deltatee.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Logan Gunthorpe <logang@deltatee.com>
Reviewed-by: Jason Gunthorpe <jgg@mellanox.com>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
---
drivers/dax/device.c | 12 ++++++------
drivers/nvdimm/pmem.c | 18 +++++++++---------
drivers/pci/p2pdma.c | 11 ++++++-----
include/linux/memremap.h | 4 ++--
kernel/memremap.c | 8 ++++----
mm/hmm.c | 10 +++++-----
tools/testing/nvdimm/test/iomap.c | 4 ++--
7 files changed, 34 insertions(+), 33 deletions(-)
diff --git a/drivers/dax/device.c b/drivers/dax/device.c
index cd483050a775..17b46c1a76b4 100644
--- a/drivers/dax/device.c
+++ b/drivers/dax/device.c
@@ -27,21 +27,21 @@ static void dev_dax_percpu_release(struct percpu_ref *ref)
complete(&dev_dax->cmp);
}
-static void dev_dax_percpu_exit(struct percpu_ref *ref)
+static void dev_dax_percpu_exit(struct dev_pagemap *pgmap)
{
- struct dev_dax *dev_dax = ref_to_dev_dax(ref);
+ struct dev_dax *dev_dax = container_of(pgmap, struct dev_dax, pgmap);
dev_dbg(&dev_dax->dev, "%s\n", __func__);
wait_for_completion(&dev_dax->cmp);
- percpu_ref_exit(ref);
+ percpu_ref_exit(pgmap->ref);
}
-static void dev_dax_percpu_kill(struct percpu_ref *ref)
+static void dev_dax_percpu_kill(struct dev_pagemap *pgmap)
{
- struct dev_dax *dev_dax = ref_to_dev_dax(ref);
+ struct dev_dax *dev_dax = container_of(pgmap, struct dev_dax, pgmap);
dev_dbg(&dev_dax->dev, "%s\n", __func__);
- percpu_ref_kill(ref);
+ percpu_ref_kill(pgmap->ref);
}
static int check_vma(struct dev_dax *dev_dax, struct vm_area_struct *vma,
diff --git a/drivers/nvdimm/pmem.c b/drivers/nvdimm/pmem.c
index 1a9986dc4dc6..469a0f5b3380 100644
--- a/drivers/nvdimm/pmem.c
+++ b/drivers/nvdimm/pmem.c
@@ -311,24 +311,24 @@ static const struct attribute_group *pmem_attribute_groups[] = {
NULL,
};
-static void pmem_pagemap_cleanup(struct percpu_ref *ref)
+static void pmem_pagemap_cleanup(struct dev_pagemap *pgmap)
{
- struct request_queue *q;
+ struct request_queue *q =
+ container_of(pgmap->ref, struct request_queue, q_usage_counter);
- q = container_of(ref, typeof(*q), q_usage_counter);
blk_cleanup_queue(q);
}
-static void pmem_release_queue(void *ref)
+static void pmem_release_queue(void *pgmap)
{
- pmem_pagemap_cleanup(ref);
+ pmem_pagemap_cleanup(pgmap);
}
-static void pmem_pagemap_kill(struct percpu_ref *ref)
+static void pmem_pagemap_kill(struct dev_pagemap *pgmap)
{
- struct request_queue *q;
+ struct request_queue *q =
+ container_of(pgmap->ref, struct request_queue, q_usage_counter);
- q = container_of(ref, typeof(*q), q_usage_counter);
blk_freeze_queue_start(q);
}
@@ -443,7 +443,7 @@ static int pmem_attach_disk(struct device *dev,
memcpy(&bb_res, &pmem->pgmap.res, sizeof(bb_res));
} else {
if (devm_add_action_or_reset(dev, pmem_release_queue,
- &q->q_usage_counter))
+ &pmem->pgmap))
return -ENOMEM;
addr = devm_memremap(dev, pmem->phys_addr,
pmem->size, ARCH_MEMREMAP_PMEM);
diff --git a/drivers/pci/p2pdma.c b/drivers/pci/p2pdma.c
index e083567d26ef..48a88158e46a 100644
--- a/drivers/pci/p2pdma.c
+++ b/drivers/pci/p2pdma.c
@@ -90,17 +90,18 @@ static void pci_p2pdma_percpu_release(struct percpu_ref *ref)
complete(&p2p_pgmap->ref_done);
}
-static void pci_p2pdma_percpu_kill(struct percpu_ref *ref)
+static void pci_p2pdma_percpu_kill(struct dev_pagemap *pgmap)
{
- percpu_ref_kill(ref);
+ percpu_ref_kill(pgmap->ref);
}
-static void pci_p2pdma_percpu_cleanup(struct percpu_ref *ref)
+static void pci_p2pdma_percpu_cleanup(struct dev_pagemap *pgmap)
{
- struct p2pdma_pagemap *p2p_pgmap = to_p2p_pgmap(ref);
+ struct p2pdma_pagemap *p2p_pgmap =
+ container_of(pgmap, struct p2pdma_pagemap, pgmap);
wait_for_completion(&p2p_pgmap->ref_done);
- percpu_ref_exit(ref);
+ percpu_ref_exit(&p2p_pgmap->ref);
}
static void pci_p2pdma_release(void *data)
diff --git a/include/linux/memremap.h b/include/linux/memremap.h
index 1cdcfd595770..cec02d5400f1 100644
--- a/include/linux/memremap.h
+++ b/include/linux/memremap.h
@@ -74,12 +74,12 @@ struct dev_pagemap_ops {
/*
* Transition the refcount in struct dev_pagemap to the dead state.
*/
- void (*kill)(struct percpu_ref *ref);
+ void (*kill)(struct dev_pagemap *pgmap);
/*
* Wait for refcount in struct dev_pagemap to be idle and reap it.
*/
- void (*cleanup)(struct percpu_ref *ref);
+ void (*cleanup)(struct dev_pagemap *pgmap);
};
/**
diff --git a/kernel/memremap.c b/kernel/memremap.c
index 85635ff57e04..ba7156bd52d1 100644
--- a/kernel/memremap.c
+++ b/kernel/memremap.c
@@ -92,10 +92,10 @@ static void devm_memremap_pages_release(void *data)
unsigned long pfn;
int nid;
- pgmap->ops->kill(pgmap->ref);
+ pgmap->ops->kill(pgmap);
for_each_device_pfn(pfn, pgmap)
put_page(pfn_to_page(pfn));
- pgmap->ops->cleanup(pgmap->ref);
+ pgmap->ops->cleanup(pgmap);
/* pages are dead and unused, undo the arch mapping */
align_start = res->start & ~(SECTION_SIZE - 1);
@@ -299,8 +299,8 @@ void *devm_memremap_pages(struct device *dev, struct dev_pagemap *pgmap)
err_pfn_remap:
pgmap_array_delete(res);
err_array:
- pgmap->ops->kill(pgmap->ref);
- pgmap->ops->cleanup(pgmap->ref);
+ pgmap->ops->kill(pgmap);
+ pgmap->ops->cleanup(pgmap);
return ERR_PTR(error);
}
EXPORT_SYMBOL_GPL(devm_memremap_pages);
diff --git a/mm/hmm.c b/mm/hmm.c
index 694e53bc55f4..ec3bf2c5c699 100644
--- a/mm/hmm.c
+++ b/mm/hmm.c
@@ -1349,18 +1349,18 @@ static void hmm_devmem_ref_release(struct percpu_ref *ref)
complete(&devmem->completion);
}
-static void hmm_devmem_ref_exit(struct percpu_ref *ref)
+static void hmm_devmem_ref_exit(struct dev_pagemap *pgmap)
{
struct hmm_devmem *devmem;
- devmem = container_of(ref, struct hmm_devmem, ref);
+ devmem = container_of(pgmap, struct hmm_devmem, pagemap);
wait_for_completion(&devmem->completion);
- percpu_ref_exit(ref);
+ percpu_ref_exit(pgmap->ref);
}
-static void hmm_devmem_ref_kill(struct percpu_ref *ref)
+static void hmm_devmem_ref_kill(struct dev_pagemap *pgmap)
{
- percpu_ref_kill(ref);
+ percpu_ref_kill(pgmap->ref);
}
static vm_fault_t hmm_devmem_fault(struct vm_area_struct *vma,
diff --git a/tools/testing/nvdimm/test/iomap.c b/tools/testing/nvdimm/test/iomap.c
index a667d974155e..3a1fa7735f47 100644
--- a/tools/testing/nvdimm/test/iomap.c
+++ b/tools/testing/nvdimm/test/iomap.c
@@ -108,8 +108,8 @@ static void nfit_test_kill(void *_pgmap)
{
WARN_ON(!pgmap || !pgmap->ref || !pgmap->ops->kill ||
!pgmap->ops->cleanup);
- pgmap->ops->kill(pgmap->ref);
- pgmap->ops->cleanup(pgmap->ref);
+ pgmap->ops->kill(pgmap);
+ pgmap->ops->cleanup(pgmap);
}
void *__wrap_devm_memremap_pages(struct device *dev, struct dev_pagemap *pgmap)
--
2.20.1
next prev parent reply other threads:[~2019-06-17 12:29 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-17 12:27 dev_pagemap related cleanups v2 Christoph Hellwig
2019-06-17 12:27 ` [PATCH 01/25] mm: remove the unused ARCH_HAS_HMM_DEVICE Kconfig option Christoph Hellwig
2019-06-17 12:27 ` [PATCH 02/25] mm: remove the struct hmm_device infrastructure Christoph Hellwig
2019-06-17 12:27 ` [PATCH 03/25] mm: remove hmm_devmem_add_resource Christoph Hellwig
2019-06-17 12:27 ` [PATCH 04/25] mm: don't clear ->mapping in hmm_devmem_free Christoph Hellwig
2019-06-17 12:27 ` [PATCH 05/25] mm: export alloc_pages_vma Christoph Hellwig
2019-06-17 12:27 ` [PATCH 06/25] mm: factor out a devm_request_free_mem_region helper Christoph Hellwig
2019-06-17 17:37 ` Dan Williams
2019-06-17 17:40 ` Christoph Hellwig
2019-06-17 17:42 ` Christoph Hellwig
2019-06-17 12:27 ` [PATCH 07/25] memremap: validate the pagemap type passed to devm_memremap_pages Christoph Hellwig
2019-06-17 19:02 ` Dan Williams
2019-06-17 19:54 ` Christoph Hellwig
2019-06-17 20:36 ` Dan Williams
2019-06-17 12:27 ` [PATCH 08/25] memremap: move dev_pagemap callbacks into a separate structure Christoph Hellwig
2019-06-17 17:51 ` Dan Williams
2019-06-17 19:55 ` Christoph Hellwig
2019-06-17 21:09 ` Dan Williams
2019-06-17 20:08 ` Logan Gunthorpe
2019-06-17 20:09 ` Christoph Hellwig
2019-06-17 12:27 ` Christoph Hellwig [this message]
2019-06-17 12:27 ` [PATCH 10/25] memremap: lift the devmap_enable manipulation into devm_memremap_pages Christoph Hellwig
2019-06-17 19:25 ` Dan Williams
2019-06-17 12:27 ` [PATCH 11/25] memremap: add a migrate_to_ram method to struct dev_pagemap_ops Christoph Hellwig
2019-06-17 12:27 ` [PATCH 12/25] memremap: remove the data field in struct dev_pagemap Christoph Hellwig
2019-06-17 12:27 ` [PATCH 13/25] memremap: replace the altmap_valid field with a PGMAP_ALTMAP_VALID flag Christoph Hellwig
2019-06-17 12:27 ` [PATCH 14/25] memremap: provide an optional internal refcount in struct dev_pagemap Christoph Hellwig
2019-06-17 12:27 ` [PATCH 15/25] device-dax: use the dev_pagemap internal refcount Christoph Hellwig
2019-06-18 19:43 ` Dan Williams
2019-06-17 12:27 ` [PATCH 16/25] PCI/P2PDMA: " Christoph Hellwig
2019-06-17 20:10 ` Logan Gunthorpe
2019-06-17 12:27 ` [PATCH 17/25] nouveau: use alloc_page_vma directly Christoph Hellwig
2019-06-17 12:27 ` [PATCH 18/25] nouveau: use devm_memremap_pages directly Christoph Hellwig
2019-06-17 12:27 ` [PATCH 19/25] mm: remove hmm_vma_alloc_locked_page Christoph Hellwig
2019-06-17 12:27 ` [PATCH 20/25] mm: remove hmm_devmem_add Christoph Hellwig
2019-06-17 12:27 ` [PATCH 21/25] mm: mark DEVICE_PUBLIC as broken Christoph Hellwig
2019-06-17 12:27 ` [PATCH 22/25] mm: simplify ZONE_DEVICE page private data Christoph Hellwig
2019-06-17 12:27 ` [PATCH 23/25] mm: sort out the DEVICE_PRIVATE Kconfig mess Christoph Hellwig
2019-06-17 12:27 ` [PATCH 24/25] mm: remove the HMM config option Christoph Hellwig
2019-06-17 12:27 ` [PATCH 25/25] mm: don't select MIGRATE_VMA_HELPER from HMM_MIRROR Christoph Hellwig
2019-06-18 19:47 ` dev_pagemap related cleanups v2 Dan Williams
2019-06-19 9:40 ` Christoph Hellwig
2019-06-19 16:36 ` Jason Gunthorpe
2019-06-19 16:46 ` Dan Williams
2019-06-19 18:19 ` Jason Gunthorpe
2019-06-20 6:32 ` Christoph Hellwig
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