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| author |   Hugh Dickins <hugh@veritas.com> | 2005-04-19 13:29:15 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@ppc970.osdl.org.(none)> | 2005-04-19 13:29:15 -0700 |
| commit | ee39b37b23da0b6ec53a8ebe90ff41c016f8ae27 (patch) | |
| tree | 4af606913ab8f95551623b788c0c66c1f5902229 /include/linux/mm.h | |
| parent | [PATCH] freepgt: free_pgtables use vma list (diff) | |
| download | linux-dev-ee39b37b23da0b6ec53a8ebe90ff41c016f8ae27.tar.xz linux-dev-ee39b37b23da0b6ec53a8ebe90ff41c016f8ae27.zip | |
[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 <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/linux/mm.h')
| -rw-r--r-- | include/linux/mm.h | 9 |
1 files changed, 2 insertions, 7 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h index c3f6c39d41d0..59eca28b5ae2 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -37,10 +37,6 @@ extern int sysctl_legacy_va_layout; #include <asm/processor.h> #include <asm/atomic.h> -#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 *); |