search for: pgmap_altmap_valid

...set) / PAGE_SIZE); @@ -634,7 +633,7 @@ static int __nvdimm_setup_pfn(struct nd_pfn *nd_pfn, struct dev_pagemap *pgmap) memcpy(altmap, &__altmap, sizeof(*altmap)); altmap->free = PHYS_PFN(offset - reserve); altmap->alloc = 0; - pgmap->altmap_valid = true; + pgmap->flags |= PGMAP_ALTMAP_VALID; } else return -ENXIO; diff --git a/drivers/nvdimm/pmem.c b/drivers/nvdimm/pmem.c index 093408ce40ad..e7d8cc9f41e8 100644 --- a/drivers/nvdimm/pmem.c +++ b/drivers/nvdimm/pmem.c @@ -412,7 +412,6 @@ static int pmem_attach_disk(struct device *dev, bb_res.start += pmem->data_offset; } e...

...rs of @pgmap must be - * initialized by the caller before passing it to this function + * 1/ At a minimum the res and type members of @pgmap must be initialized + * by the caller before passing it to this function * * 2/ The altmap field may optionally be initialized, in which case * PGMAP_ALTMAP_VALID must be set in pgmap->flags. * - * 3/ pgmap->ref must be 'live' on entry and will be killed and reaped - * at devm_memremap_pages_release() time, or if this routine fails. + * 3/ The ref field may optionally be provided, in which pgmap->ref must be + * 'live' on ent...

...initialized by the caller before passing it to this function > + * 1/ At a minimum the res and type members of @pgmap must be initialized > + * by the caller before passing it to this function > * > * 2/ The altmap field may optionally be initialized, in which case > * PGMAP_ALTMAP_VALID must be set in pgmap->flags. > * > - * 3/ pgmap->ref must be 'live' on entry and will be killed and reaped > - * at devm_memremap_pages_release() time, or if this routine fails. > + * 3/ The ref field may optionally be provided, in which pgmap->ref must be > + *...

Hi Dan, Jérôme and Jason, below is a series that cleans up the dev_pagemap interface so that it is more easily usable, which removes the need to wrap it in hmm and thus allowing to kill a lot of code Note: this series is on top of Linux 5.2-rc5 and has some minor conflicts with the hmm tree that are easy to resolve. Diffstat summary: 32 files changed, 361 insertions(+), 1012 deletions(-) Git

Hi Dan, Jérôme and Jason, below is a series that cleans up the dev_pagemap interface so that it is more easily usable, which removes the need to wrap it in hmm and thus allowing to kill a lot of code Note: this series is on top of the rdma/hmm branch + the dev_pagemap releas fix series from Dan that went into 5.2-rc5. Git tree: git://git.infradead.org/users/hch/misc.git

...y. + * This is called when a compound device private page is split. + * The driver uses this callback to set tail_page->pgmap and + * tail_page->zone_device_data appropriately based on the head + * page. + */ + void (*page_split)(struct page *head, struct page *tail_page); }; #define PGMAP_ALTMAP_VALID (1 << 0) diff --git a/include/linux/migrate.h b/include/linux/migrate.h index 0f8d1583fa8e..92179bf360d1 100644 --- a/include/linux/migrate.h +++ b/include/linux/migrate.h @@ -144,6 +144,7 @@ static inline int migrate_misplaced_transhuge_page(struct mm_struct *mm, #define MIGRATE_PFN_MIGRATE...

This series adds support for transparent huge page migration to migrate_vma_*() and adds nouveau SVM and HMM selftests as consumers. Earlier versions were posted previously [1] and [2]. The patches apply cleanly to the linux-mm 5.10.0-rc2 tree. There are a lot of other THP patches being posted. I don't think there are any semantic conflicts but there may be some merge conflicts depending on

This series adds support for transparent huge page migration to migrate_vma_*() and adds nouveau SVM and HMM selftests as consumers. An earlier version was posted previously [1]. This version now supports splitting a THP midway in the migration process which led to a number of changes. The patches apply cleanly to the current linux-mm tree. Since there are a couple of patches in linux-mm from Dan