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Wed, 10 Jul 2024 10:51:30 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id 0H5rGLJnjmazcwAAD6G6ig (envelope-from ); Wed, 10 Jul 2024 10:51:30 +0000 From: Oscar Salvador To: Andrew Morton Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, Muchun Song , David Hildenbrand , Michal Hocko , Donet Tom , "Kirill A . Shutemov" , Matthew Wilcox , Vlastimil Babka , Oscar Salvador Subject: [RFC PATCH 7/8] mm: Drop hugetlb_get_unmapped_area{_*} functions Date: Wed, 10 Jul 2024 12:50:41 +0200 Message-ID: <20240710105042.30165-8-osalvador@suse.de> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240710105042.30165-1-osalvador@suse.de> References: <20240710105042.30165-1-osalvador@suse.de> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Spamd-Result: default: False [-6.80 / 50.00]; REPLY(-4.00)[]; BAYES_HAM(-3.00)[100.00%]; NEURAL_HAM_LONG(-1.00)[-1.000]; MID_CONTAINS_FROM(1.00)[]; R_MISSING_CHARSET(0.50)[]; NEURAL_HAM_SHORT(-0.20)[-1.000]; MIME_GOOD(-0.10)[text/plain]; RCVD_COUNT_TWO(0.00)[2]; ARC_NA(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; MIME_TRACE(0.00)[0:+]; TO_MATCH_ENVRCPT_ALL(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; RCPT_COUNT_SEVEN(0.00)[11]; FUZZY_BLOCKED(0.00)[rspamd.com]; DBL_BLOCKED_OPENRESOLVER(0.00)[imap1.dmz-prg2.suse.org:helo,suse.de:email]; DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; R_RATELIMIT(0.00)[to_ip_from(RL61jpu64h8b3ddwbzqogesdsf)]; RCVD_TLS_ALL(0.00)[] X-Spam-Flag: NO X-Spam-Score: -6.80 X-Spam-Level: Content-Type: text/plain; charset="utf-8" Hugetlb mappings are now handled through normal channels just like any other mapping, so we no longer need hugetlb_get_unmapped_area* specific functions. Signed-off-by: Oscar Salvador --- arch/parisc/mm/hugetlbpage.c | 23 ------- arch/powerpc/mm/book3s64/slice.c | 10 --- arch/s390/mm/hugetlbpage.c | 84 ------------------------ arch/sparc/mm/hugetlbpage.c | 108 ------------------------------- arch/x86/mm/hugetlbpage.c | 100 ---------------------------- fs/hugetlbfs/inode.c | 86 ------------------------ include/linux/hugetlb.h | 5 -- 7 files changed, 416 deletions(-) diff --git a/arch/parisc/mm/hugetlbpage.c b/arch/parisc/mm/hugetlbpage.c index 0356199bd9e7..69c463d6ffd6 100644 --- a/arch/parisc/mm/hugetlbpage.c +++ b/arch/parisc/mm/hugetlbpage.c @@ -21,29 +21,6 @@ #include =20 =20 -unsigned long -hugetlb_get_unmapped_area(struct file *file, unsigned long addr, - unsigned long len, unsigned long pgoff, unsigned long flags) -{ - struct hstate *h =3D hstate_file(file); - - if (len & ~huge_page_mask(h)) - return -EINVAL; - if (len > TASK_SIZE) - return -ENOMEM; - - if (flags & MAP_FIXED) - if (prepare_hugepage_range(file, addr, len)) - return -EINVAL; - - if (addr) - addr =3D ALIGN(addr, huge_page_size(h)); - - /* we need to make sure the colouring is OK */ - return arch_get_unmapped_area(file, addr, len, pgoff, flags); -} - - pte_t *huge_pte_alloc(struct mm_struct *mm, struct vm_area_struct *vma, unsigned long addr, unsigned long sz) { diff --git a/arch/powerpc/mm/book3s64/slice.c b/arch/powerpc/mm/book3s64/sl= ice.c index 6914b8de627c..6ce16bc330a2 100644 --- a/arch/powerpc/mm/book3s64/slice.c +++ b/arch/powerpc/mm/book3s64/slice.c @@ -811,14 +811,4 @@ unsigned long vma_mmu_pagesize(struct vm_area_struct *= vma) =20 return 1UL << mmu_psize_to_shift(get_slice_psize(vma->vm_mm, vma->vm_star= t)); } - -unsigned long hugetlb_get_unmapped_area(struct file *file, unsigned long a= ddr, - unsigned long len, unsigned long pgoff, - unsigned long flags) -{ - if (radix_enabled()) - return generic_hugetlb_get_unmapped_area(file, addr, len, pgoff, flags); - - return slice_get_unmapped_area(addr, len, flags, file_to_psize(file), 1); -} #endif diff --git a/arch/s390/mm/hugetlbpage.c b/arch/s390/mm/hugetlbpage.c index 2675aab4acc7..e8d91428f3d1 100644 --- a/arch/s390/mm/hugetlbpage.c +++ b/arch/s390/mm/hugetlbpage.c @@ -243,87 +243,3 @@ bool __init arch_hugetlb_valid_size(unsigned long size) return false; } =20 -static unsigned long hugetlb_get_unmapped_area_bottomup(struct file *file, - unsigned long addr, unsigned long len, - unsigned long pgoff, unsigned long flags) -{ - struct hstate *h =3D hstate_file(file); - struct vm_unmapped_area_info info =3D {}; - - info.length =3D len; - info.low_limit =3D current->mm->mmap_base; - info.high_limit =3D TASK_SIZE; - info.align_mask =3D PAGE_MASK & ~huge_page_mask(h); - return vm_unmapped_area(&info); -} - -static unsigned long hugetlb_get_unmapped_area_topdown(struct file *file, - unsigned long addr0, unsigned long len, - unsigned long pgoff, unsigned long flags) -{ - struct hstate *h =3D hstate_file(file); - struct vm_unmapped_area_info info =3D {}; - unsigned long addr; - - info.flags =3D VM_UNMAPPED_AREA_TOPDOWN; - info.length =3D len; - info.low_limit =3D PAGE_SIZE; - info.high_limit =3D current->mm->mmap_base; - info.align_mask =3D PAGE_MASK & ~huge_page_mask(h); - addr =3D vm_unmapped_area(&info); - - /* - * A failed mmap() very likely causes application failure, - * so fall back to the bottom-up function here. This scenario - * can happen with large stack limits and large mmap() - * allocations. - */ - if (addr & ~PAGE_MASK) { - VM_BUG_ON(addr !=3D -ENOMEM); - info.flags =3D 0; - info.low_limit =3D TASK_UNMAPPED_BASE; - info.high_limit =3D TASK_SIZE; - addr =3D vm_unmapped_area(&info); - } - - return addr; -} - -unsigned long hugetlb_get_unmapped_area(struct file *file, unsigned long a= ddr, - unsigned long len, unsigned long pgoff, unsigned long flags) -{ - struct hstate *h =3D hstate_file(file); - struct mm_struct *mm =3D current->mm; - struct vm_area_struct *vma; - - if (len & ~huge_page_mask(h)) - return -EINVAL; - if (len > TASK_SIZE - mmap_min_addr) - return -ENOMEM; - - if (flags & MAP_FIXED) { - if (prepare_hugepage_range(file, addr, len)) - return -EINVAL; - goto check_asce_limit; - } - - if (addr) { - addr =3D ALIGN(addr, huge_page_size(h)); - vma =3D find_vma(mm, addr); - if (TASK_SIZE - len >=3D addr && addr >=3D mmap_min_addr && - (!vma || addr + len <=3D vm_start_gap(vma))) - goto check_asce_limit; - } - - if (!test_bit(MMF_TOPDOWN, &mm->flags)) - addr =3D hugetlb_get_unmapped_area_bottomup(file, addr, len, - pgoff, flags); - else - addr =3D hugetlb_get_unmapped_area_topdown(file, addr, len, - pgoff, flags); - if (offset_in_page(addr)) - return addr; - -check_asce_limit: - return check_asce_limit(mm, addr, len); -} diff --git a/arch/sparc/mm/hugetlbpage.c b/arch/sparc/mm/hugetlbpage.c index cc91ca7a1e18..eee601a0d2cf 100644 --- a/arch/sparc/mm/hugetlbpage.c +++ b/arch/sparc/mm/hugetlbpage.c @@ -19,114 +19,6 @@ #include #include =20 -/* Slightly simplified from the non-hugepage variant because by - * definition we don't have to worry about any page coloring stuff - */ - -static unsigned long hugetlb_get_unmapped_area_bottomup(struct file *filp, - unsigned long addr, - unsigned long len, - unsigned long pgoff, - unsigned long flags) -{ - struct hstate *h =3D hstate_file(filp); - unsigned long task_size =3D TASK_SIZE; - struct vm_unmapped_area_info info =3D {}; - - if (test_thread_flag(TIF_32BIT)) - task_size =3D STACK_TOP32; - - info.length =3D len; - info.low_limit =3D TASK_UNMAPPED_BASE; - info.high_limit =3D min(task_size, VA_EXCLUDE_START); - info.align_mask =3D PAGE_MASK & ~huge_page_mask(h); - addr =3D vm_unmapped_area(&info); - - if ((addr & ~PAGE_MASK) && task_size > VA_EXCLUDE_END) { - VM_BUG_ON(addr !=3D -ENOMEM); - info.low_limit =3D VA_EXCLUDE_END; - info.high_limit =3D task_size; - addr =3D vm_unmapped_area(&info); - } - - return addr; -} - -static unsigned long -hugetlb_get_unmapped_area_topdown(struct file *filp, const unsigned long a= ddr0, - const unsigned long len, - const unsigned long pgoff, - const unsigned long flags) -{ - struct hstate *h =3D hstate_file(filp); - struct mm_struct *mm =3D current->mm; - unsigned long addr =3D addr0; - struct vm_unmapped_area_info info =3D {}; - - /* This should only ever run for 32-bit processes. */ - BUG_ON(!test_thread_flag(TIF_32BIT)); - - info.flags =3D VM_UNMAPPED_AREA_TOPDOWN; - info.length =3D len; - info.low_limit =3D PAGE_SIZE; - info.high_limit =3D mm->mmap_base; - info.align_mask =3D PAGE_MASK & ~huge_page_mask(h); - addr =3D vm_unmapped_area(&info); - - /* - * A failed mmap() very likely causes application failure, - * so fall back to the bottom-up function here. This scenario - * can happen with large stack limits and large mmap() - * allocations. - */ - if (addr & ~PAGE_MASK) { - VM_BUG_ON(addr !=3D -ENOMEM); - info.flags =3D 0; - info.low_limit =3D TASK_UNMAPPED_BASE; - info.high_limit =3D STACK_TOP32; - addr =3D vm_unmapped_area(&info); - } - - return addr; -} - -unsigned long -hugetlb_get_unmapped_area(struct file *file, unsigned long addr, - unsigned long len, unsigned long pgoff, unsigned long flags) -{ - struct hstate *h =3D hstate_file(file); - struct mm_struct *mm =3D current->mm; - struct vm_area_struct *vma; - unsigned long task_size =3D TASK_SIZE; - - if (test_thread_flag(TIF_32BIT)) - task_size =3D STACK_TOP32; - - if (len & ~huge_page_mask(h)) - return -EINVAL; - if (len > task_size) - return -ENOMEM; - - if (flags & MAP_FIXED) { - if (prepare_hugepage_range(file, addr, len)) - return -EINVAL; - return addr; - } - - if (addr) { - addr =3D ALIGN(addr, huge_page_size(h)); - vma =3D find_vma(mm, addr); - if (task_size - len >=3D addr && - (!vma || addr + len <=3D vm_start_gap(vma))) - return addr; - } - if (!test_bit(MMF_TOPDOWN, &mm->flags)) - return hugetlb_get_unmapped_area_bottomup(file, addr, len, - pgoff, flags); - else - return hugetlb_get_unmapped_area_topdown(file, addr, len, - pgoff, flags); -} =20 static pte_t sun4u_hugepage_shift_to_tte(pte_t entry, unsigned int shift) { diff --git a/arch/x86/mm/hugetlbpage.c b/arch/x86/mm/hugetlbpage.c index 807a5859a3c4..e0c03fe3a994 100644 --- a/arch/x86/mm/hugetlbpage.c +++ b/arch/x86/mm/hugetlbpage.c @@ -19,107 +19,7 @@ #include #include =20 -#ifdef CONFIG_HUGETLB_PAGE -static unsigned long hugetlb_get_unmapped_area_bottomup(struct file *file, - unsigned long addr, unsigned long len, - unsigned long pgoff, unsigned long flags) -{ - struct hstate *h =3D hstate_file(file); - struct vm_unmapped_area_info info =3D {}; - - info.length =3D len; - info.low_limit =3D get_mmap_base(1); - - /* - * If hint address is above DEFAULT_MAP_WINDOW, look for unmapped area - * in the full address space. - */ - info.high_limit =3D in_32bit_syscall() ? - task_size_32bit() : task_size_64bit(addr > DEFAULT_MAP_WINDOW); - - info.align_mask =3D PAGE_MASK & ~huge_page_mask(h); - return vm_unmapped_area(&info); -} - -static unsigned long hugetlb_get_unmapped_area_topdown(struct file *file, - unsigned long addr, unsigned long len, - unsigned long pgoff, unsigned long flags) -{ - struct hstate *h =3D hstate_file(file); - struct vm_unmapped_area_info info =3D {}; - - info.flags =3D VM_UNMAPPED_AREA_TOPDOWN; - info.length =3D len; - info.low_limit =3D PAGE_SIZE; - info.high_limit =3D get_mmap_base(0); - - /* - * If hint address is above DEFAULT_MAP_WINDOW, look for unmapped area - * in the full address space. - */ - if (addr > DEFAULT_MAP_WINDOW && !in_32bit_syscall()) - info.high_limit +=3D TASK_SIZE_MAX - DEFAULT_MAP_WINDOW; - - info.align_mask =3D PAGE_MASK & ~huge_page_mask(h); - addr =3D vm_unmapped_area(&info); - - /* - * A failed mmap() very likely causes application failure, - * so fall back to the bottom-up function here. This scenario - * can happen with large stack limits and large mmap() - * allocations. - */ - if (addr & ~PAGE_MASK) { - VM_BUG_ON(addr !=3D -ENOMEM); - info.flags =3D 0; - info.low_limit =3D TASK_UNMAPPED_BASE; - info.high_limit =3D TASK_SIZE_LOW; - addr =3D vm_unmapped_area(&info); - } =20 - return addr; -} - -unsigned long -hugetlb_get_unmapped_area(struct file *file, unsigned long addr, - unsigned long len, unsigned long pgoff, unsigned long flags) -{ - struct hstate *h =3D hstate_file(file); - struct mm_struct *mm =3D current->mm; - struct vm_area_struct *vma; - - if (len & ~huge_page_mask(h)) - return -EINVAL; - - if (len > TASK_SIZE) - return -ENOMEM; - - /* No address checking. See comment at mmap_address_hint_valid() */ - if (flags & MAP_FIXED) { - if (prepare_hugepage_range(file, addr, len)) - return -EINVAL; - return addr; - } - - if (addr) { - addr &=3D huge_page_mask(h); - if (!mmap_address_hint_valid(addr, len)) - goto get_unmapped_area; - - vma =3D find_vma(mm, addr); - if (!vma || addr + len <=3D vm_start_gap(vma)) - return addr; - } - -get_unmapped_area: - if (!test_bit(MMF_TOPDOWN, &mm->flags)) - return hugetlb_get_unmapped_area_bottomup(file, addr, len, - pgoff, flags); - else - return hugetlb_get_unmapped_area_topdown(file, addr, len, - pgoff, flags); -} -#endif /* CONFIG_HUGETLB_PAGE */ =20 #ifdef CONFIG_X86_64 bool __init arch_hugetlb_valid_size(unsigned long size) diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c index b2d7fcecdb15..722e60327615 100644 --- a/fs/hugetlbfs/inode.c +++ b/fs/hugetlbfs/inode.c @@ -171,92 +171,6 @@ static int hugetlbfs_file_mmap(struct file *file, stru= ct vm_area_struct *vma) * Called under mmap_write_lock(mm). */ =20 -static unsigned long -hugetlb_get_unmapped_area_bottomup(struct file *file, unsigned long addr, - unsigned long len, unsigned long pgoff, unsigned long flags) -{ - struct hstate *h =3D hstate_file(file); - struct vm_unmapped_area_info info =3D {}; - - info.length =3D len; - info.low_limit =3D current->mm->mmap_base; - info.high_limit =3D arch_get_mmap_end(addr, len, flags); - info.align_mask =3D PAGE_MASK & ~huge_page_mask(h); - return vm_unmapped_area(&info); -} - -static unsigned long -hugetlb_get_unmapped_area_topdown(struct file *file, unsigned long addr, - unsigned long len, unsigned long pgoff, unsigned long flags) -{ - struct hstate *h =3D hstate_file(file); - struct vm_unmapped_area_info info =3D {}; - - info.flags =3D VM_UNMAPPED_AREA_TOPDOWN; - info.length =3D len; - info.low_limit =3D PAGE_SIZE; - info.high_limit =3D arch_get_mmap_base(addr, current->mm->mmap_base); - info.align_mask =3D PAGE_MASK & ~huge_page_mask(h); - addr =3D vm_unmapped_area(&info); - - /* - * A failed mmap() very likely causes application failure, - * so fall back to the bottom-up function here. This scenario - * can happen with large stack limits and large mmap() - * allocations. - */ - if (unlikely(offset_in_page(addr))) { - VM_BUG_ON(addr !=3D -ENOMEM); - info.flags =3D 0; - info.low_limit =3D current->mm->mmap_base; - info.high_limit =3D arch_get_mmap_end(addr, len, flags); - addr =3D vm_unmapped_area(&info); - } - - return addr; -} - -unsigned long -generic_hugetlb_get_unmapped_area(struct file *file, unsigned long addr, - unsigned long len, unsigned long pgoff, - unsigned long flags) -{ - struct mm_struct *mm =3D current->mm; - struct vm_area_struct *vma; - struct hstate *h =3D hstate_file(file); - const unsigned long mmap_end =3D arch_get_mmap_end(addr, len, flags); - - if (len & ~huge_page_mask(h)) - return -EINVAL; - if (len > TASK_SIZE) - return -ENOMEM; - - if (flags & MAP_FIXED) { - if (prepare_hugepage_range(file, addr, len)) - return -EINVAL; - return addr; - } - - if (addr) { - addr =3D ALIGN(addr, huge_page_size(h)); - vma =3D find_vma(mm, addr); - if (mmap_end - len >=3D addr && - (!vma || addr + len <=3D vm_start_gap(vma))) - return addr; - } - - /* - * Use MMF_TOPDOWN flag as a hint to use topdown routine. - * If architectures have special needs, they should define their own - * version of hugetlb_get_unmapped_area. - */ - if (test_bit(MMF_TOPDOWN, &mm->flags)) - return hugetlb_get_unmapped_area_topdown(file, addr, len, - pgoff, flags); - return hugetlb_get_unmapped_area_bottomup(file, addr, len, - pgoff, flags); -} - unsigned long hugetlb_mmap_check_and_align(struct file *file, unsigned long addr, unsigned long len, unsigned long flags) diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h index 9183ef95dfb6..a83a2b331bab 100644 --- a/include/linux/hugetlb.h +++ b/include/linux/hugetlb.h @@ -559,11 +559,6 @@ unsigned long hugetlb_mmap_check_and_align(struct file *file, unsigned long addr, unsigned long len, unsigned long flags); =20 -unsigned long -generic_hugetlb_get_unmapped_area(struct file *file, unsigned long addr, - unsigned long len, unsigned long pgoff, - unsigned long flags); - /* * huegtlb page specific state flags. These flags are located in page.pri= vate * of the hugetlb head page. Functions created via the below macros shoul= d be --=20 2.45.2