Use the new devm_relase_action() facility to allow devm_memremap_pages_release() to be manually triggered.
Cc: Logan Gunthorpe <[email protected]> Cc: Bjorn Helgaas <[email protected]> Cc: Christoph Hellwig <[email protected]> Reviewed-by: Ira Weiny <[email protected]> Signed-off-by: Dan Williams <[email protected]> --- include/linux/memremap.h | 6 ++++++ kernel/memremap.c | 6 ++++++ 2 files changed, 12 insertions(+) diff --git a/include/linux/memremap.h b/include/linux/memremap.h index f0628660d541..7601ee314c4a 100644 --- a/include/linux/memremap.h +++ b/include/linux/memremap.h @@ -100,6 +100,7 @@ struct dev_pagemap { #ifdef CONFIG_ZONE_DEVICE void *devm_memremap_pages(struct device *dev, struct dev_pagemap *pgmap); +void devm_memunmap_pages(struct device *dev, struct dev_pagemap *pgmap); struct dev_pagemap *get_dev_pagemap(unsigned long pfn, struct dev_pagemap *pgmap); @@ -118,6 +119,11 @@ static inline void *devm_memremap_pages(struct device *dev, return ERR_PTR(-ENXIO); } +static inline void devm_memunmap_pages(struct device *dev, + struct dev_pagemap *pgmap) +{ +} + static inline struct dev_pagemap *get_dev_pagemap(unsigned long pfn, struct dev_pagemap *pgmap) { diff --git a/kernel/memremap.c b/kernel/memremap.c index a856cb5ff192..65afbacab44e 100644 --- a/kernel/memremap.c +++ b/kernel/memremap.c @@ -266,6 +266,12 @@ void *devm_memremap_pages(struct device *dev, struct dev_pagemap *pgmap) } EXPORT_SYMBOL_GPL(devm_memremap_pages); +void devm_memunmap_pages(struct device *dev, struct dev_pagemap *pgmap) +{ + devm_release_action(dev, devm_memremap_pages_release, pgmap); +} +EXPORT_SYMBOL_GPL(devm_memunmap_pages); + unsigned long vmem_altmap_offset(struct vmem_altmap *altmap) { /* number of pfns from base where pfn_to_page() is valid */
