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charset="utf-8" The PFN_MAP flag is no longer used for anything, so remove it. The PFN_SG_CHAIN and PFN_SG_LAST flags never appear to have been used so also remove them. The last user of PFN_SPECIAL was removed by 653d7825c149 ("dcssblk: mark DAX broken, remove FS_DAX_LIMITED support"). Signed-off-by: Alistair Popple Acked-by: David Hildenbrand Reviewed-by: Christoph Hellwig Reviewed-by: Jason Gunthorpe Cc: gerald.schaefer@linux.ibm.com Cc: dan.j.williams@intel.com Cc: jgg@ziepe.ca Cc: willy@infradead.org Cc: david@redhat.com Cc: linux-kernel@vger.kernel.org Cc: nvdimm@lists.linux.dev Cc: jhubbard@nvidia.com Cc: hch@lst.de Cc: zhang.lyra@gmail.com Cc: debug@rivosinc.com Cc: bjorn@kernel.org Cc: balbirs@nvidia.com Cc: lorenzo.stoakes@oracle.com Cc: John@Groves.net --- Splitting this off from the rest of my series[1] as a separate clean-up for consideration for the v6.16 merge window as suggested by Christoph. [1] - https://lore.kernel.org/linux-mm/cover.541c2702181b7461b84f1a6967a3f0= e823023fcc.1748500293.git-series.apopple@nvidia.com/ --- include/linux/pfn_t.h | 31 +++---------------------------- mm/memory.c | 2 -- tools/testing/nvdimm/test/iomap.c | 4 ---- 3 files changed, 3 insertions(+), 34 deletions(-) diff --git a/include/linux/pfn_t.h b/include/linux/pfn_t.h index 2d9148221e9a..46afa12eb33b 100644 --- a/include/linux/pfn_t.h +++ b/include/linux/pfn_t.h @@ -5,26 +5,13 @@ =20 /* * PFN_FLAGS_MASK - mask of all the possible valid pfn_t flags - * PFN_SG_CHAIN - pfn is a pointer to the next scatterlist entry - * PFN_SG_LAST - pfn references a page and is the last scatterlist entry * PFN_DEV - pfn is not covered by system memmap by default - * PFN_MAP - pfn has a dynamic page mapping established by a device driver - * PFN_SPECIAL - for CONFIG_FS_DAX_LIMITED builds to allow XIP, but not - * get_user_pages */ #define PFN_FLAGS_MASK (((u64) (~PAGE_MASK)) << (BITS_PER_LONG_LONG - PAGE= _SHIFT)) -#define PFN_SG_CHAIN (1ULL << (BITS_PER_LONG_LONG - 1)) -#define PFN_SG_LAST (1ULL << (BITS_PER_LONG_LONG - 2)) #define PFN_DEV (1ULL << (BITS_PER_LONG_LONG - 3)) -#define PFN_MAP (1ULL << (BITS_PER_LONG_LONG - 4)) -#define PFN_SPECIAL (1ULL << (BITS_PER_LONG_LONG - 5)) =20 #define PFN_FLAGS_TRACE \ - { PFN_SPECIAL, "SPECIAL" }, \ - { PFN_SG_CHAIN, "SG_CHAIN" }, \ - { PFN_SG_LAST, "SG_LAST" }, \ - { PFN_DEV, "DEV" }, \ - { PFN_MAP, "MAP" } + { PFN_DEV, "DEV" } =20 static inline pfn_t __pfn_to_pfn_t(unsigned long pfn, u64 flags) { @@ -46,7 +33,7 @@ static inline pfn_t phys_to_pfn_t(phys_addr_t addr, u64 f= lags) =20 static inline bool pfn_t_has_page(pfn_t pfn) { - return (pfn.val & PFN_MAP) =3D=3D PFN_MAP || (pfn.val & PFN_DEV) =3D=3D 0; + return (pfn.val & PFN_DEV) =3D=3D 0; } =20 static inline unsigned long pfn_t_to_pfn(pfn_t pfn) @@ -100,7 +87,7 @@ static inline pud_t pfn_t_pud(pfn_t pfn, pgprot_t pgprot) #ifdef CONFIG_ARCH_HAS_PTE_DEVMAP static inline bool pfn_t_devmap(pfn_t pfn) { - const u64 flags =3D PFN_DEV|PFN_MAP; + const u64 flags =3D PFN_DEV; =20 return (pfn.val & flags) =3D=3D flags; } @@ -116,16 +103,4 @@ pmd_t pmd_mkdevmap(pmd_t pmd); pud_t pud_mkdevmap(pud_t pud); #endif #endif /* CONFIG_ARCH_HAS_PTE_DEVMAP */ - -#ifdef CONFIG_ARCH_HAS_PTE_SPECIAL -static inline bool pfn_t_special(pfn_t pfn) -{ - return (pfn.val & PFN_SPECIAL) =3D=3D PFN_SPECIAL; -} -#else -static inline bool pfn_t_special(pfn_t pfn) -{ - return false; -} -#endif /* CONFIG_ARCH_HAS_PTE_SPECIAL */ #endif /* _LINUX_PFN_T_H_ */ diff --git a/mm/memory.c b/mm/memory.c index 49199410805c..cc85f814bc1c 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -2569,8 +2569,6 @@ static bool vm_mixed_ok(struct vm_area_struct *vma, p= fn_t pfn, bool mkwrite) return true; if (pfn_t_devmap(pfn)) return true; - if (pfn_t_special(pfn)) - return true; if (is_zero_pfn(pfn_t_to_pfn(pfn))) return true; return false; diff --git a/tools/testing/nvdimm/test/iomap.c b/tools/testing/nvdimm/test/= iomap.c index e4313726fae3..ddceb04b4a9a 100644 --- a/tools/testing/nvdimm/test/iomap.c +++ b/tools/testing/nvdimm/test/iomap.c @@ -137,10 +137,6 @@ EXPORT_SYMBOL_GPL(__wrap_devm_memremap_pages); =20 pfn_t __wrap_phys_to_pfn_t(phys_addr_t addr, unsigned long flags) { - struct nfit_test_resource *nfit_res =3D get_nfit_res(addr); - - if (nfit_res) - flags &=3D ~PFN_MAP; return phys_to_pfn_t(addr, flags); } EXPORT_SYMBOL(__wrap_phys_to_pfn_t); --=20 2.47.2