From ee39b37b23da0b6ec53a8ebe90ff41c016f8ae27 Mon Sep 17 00:00:00 2001 From: Hugh Dickins Date: Tue, 19 Apr 2005 13:29:15 -0700 Subject: [PATCH] freepgt: remove MM_VM_SIZE(mm) There's only one usage of MM_VM_SIZE(mm) left, and it's a troublesome macro because mm doesn't contain the (32-bit emulation?) info needed. But it too is only needed because we ignore the end from the vma list. We could make flush_pgtables return that end, or unmap_vmas. Choose the latter, since it's a natural fit with unmap_mapping_range_vma needing to know its restart addr. This does make more than minimal change, but if unmap_vmas had returned the end before, this is how we'd have done it, rather than storing the break_addr in zap_details. unmap_vmas used to return count of vmas scanned, but that's just debug which hasn't been useful in a while; and if we want the map_count 0 on exit check back, it can easily come from the final remove_vm_struct loop. Signed-off-by: Hugh Dickins Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mm.h | 9 ++------- 1 file changed, 2 insertions(+), 7 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mm.h b/include/linux/mm.h index c3f6c39d41d..59eca28b5ae 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -37,10 +37,6 @@ extern int sysctl_legacy_va_layout; #include #include -#ifndef MM_VM_SIZE -#define MM_VM_SIZE(mm) ((TASK_SIZE + PGDIR_SIZE - 1) & PGDIR_MASK) -#endif - #define nth_page(page,n) pfn_to_page(page_to_pfn((page)) + (n)) /* @@ -582,13 +578,12 @@ struct zap_details { pgoff_t first_index; /* Lowest page->index to unmap */ pgoff_t last_index; /* Highest page->index to unmap */ spinlock_t *i_mmap_lock; /* For unmap_mapping_range: */ - unsigned long break_addr; /* Where unmap_vmas stopped */ unsigned long truncate_count; /* Compare vm_truncate_count */ }; -void zap_page_range(struct vm_area_struct *vma, unsigned long address, +unsigned long zap_page_range(struct vm_area_struct *vma, unsigned long address, unsigned long size, struct zap_details *); -int unmap_vmas(struct mmu_gather **tlbp, struct mm_struct *mm, +unsigned long unmap_vmas(struct mmu_gather **tlb, struct mm_struct *mm, struct vm_area_struct *start_vma, unsigned long start_addr, unsigned long end_addr, unsigned long *nr_accounted, struct zap_details *); -- cgit v1.2.3