Date: Wed, 22 Apr 2026 18:10:18 +0000 From: Jean-=?utf-8?Q?S=C3=A9bast?==?utf-8?Q?ien P=C3=A9?=dron <dumbbell@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: git: 84fc57a369df - main - linuxkpi: Add more `struct folio`-related functions Message-ID: <69e90f0a.452b0.76b2379f@gitrepo.freebsd.org>
index | next in thread | raw e-mail
The branch main has been updated by dumbbell: URL: https://cgit.FreeBSD.org/src/commit/?id=84fc57a369dfac882cb9e9333635aaa11978948f commit 84fc57a369dfac882cb9e9333635aaa11978948f Author: Jean-Sébastien Pédron <dumbbell@FreeBSD.org> AuthorDate: 2026-04-11 14:19:39 +0000 Commit: Jean-Sébastien Pédron <dumbbell@FreeBSD.org> CommitDate: 2026-04-22 18:09:53 +0000 linuxkpi: Add more `struct folio`-related functions The i915 DRM driver started to replace the use of `struct page` by `struct folio` in its GEM shmem code in Linux 6.12. linuxkpi were missing a few more functions: `kmap_local_folio()`, `memcpy_to_folio()` and `offset_in_folio()`. They are equivalent of their `struct page` counterparts. One difference is that `kmap_local_folio()` takes an offset argument and the returned address takes this offset into account. Reviewed by: bz Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D56438 --- sys/compat/linuxkpi/common/include/linux/highmem.h | 22 ++++++++++++++++++++++ sys/compat/linuxkpi/common/include/linux/mm.h | 1 + 2 files changed, 23 insertions(+) diff --git a/sys/compat/linuxkpi/common/include/linux/highmem.h b/sys/compat/linuxkpi/common/include/linux/highmem.h index dc1c4fe2f299..294b2666031b 100644 --- a/sys/compat/linuxkpi/common/include/linux/highmem.h +++ b/sys/compat/linuxkpi/common/include/linux/highmem.h @@ -99,6 +99,19 @@ kmap_local_page(struct page *page) return (kmap(page)); } +static inline void * +kmap_local_folio(struct folio *folio, size_t offset) +{ + struct page *page; + char *vaddr; + + page = &folio->page; + vaddr = kmap_local_page(page); + vaddr += offset; + + return (vaddr); +} + static inline void * kmap_local_page_prot(struct page *page, pgprot_t prot) { @@ -168,4 +181,13 @@ memcpy_to_page(struct page *page, size_t offset, const char *from, size_t len) kunmap_local(to); } +static inline void +memcpy_to_folio(struct folio *folio, size_t offset, const char *from, size_t len) +{ + struct page *page; + + page = &folio->page; + memcpy_to_page(page, offset, from, len); +} + #endif /* _LINUXKPI_LINUX_HIGHMEM_H_ */ diff --git a/sys/compat/linuxkpi/common/include/linux/mm.h b/sys/compat/linuxkpi/common/include/linux/mm.h index 156b00a0c0f0..a639c0947031 100644 --- a/sys/compat/linuxkpi/common/include/linux/mm.h +++ b/sys/compat/linuxkpi/common/include/linux/mm.h @@ -264,6 +264,7 @@ vma_pages(struct vm_area_struct *vma) } #define offset_in_page(off) ((unsigned long)(off) & (PAGE_SIZE - 1)) +#define offset_in_folio(folio, p) ((unsigned long)(p) & (folio_size(folio) - 1)) static inline void set_page_dirty(struct page *page)home | help
Want to link to this message? Use this
URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?69e90f0a.452b0.76b2379f>