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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-10-09 16:23:15 +0900 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-10-09 16:23:15 +0900 |
| commit | 9e2d8656f5e8aa214e66b462680cf86b210b74a8 (patch) | |
| tree | f67d62e896cedf75599ea45f9ecf9999c6ad24cd /mm/fremap.c | |
| parent | 1ea4f4f8405cc1ceec23f2d261bc3775785e6712 (diff) | |
| parent | 9e695d2ecc8451cc2c1603d60b5c8e7f5581923a (diff) | |
Merge branch 'akpm' (Andrew's patch-bomb)
Merge patches from Andrew Morton:
"A few misc things and very nearly all of the MM tree. A tremendous
amount of stuff (again), including a significant rbtree library
rework."
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (160 commits)
sparc64: Support transparent huge pages.
mm: thp: Use more portable PMD clearing sequenece in zap_huge_pmd().
mm: Add and use update_mmu_cache_pmd() in transparent huge page code.
sparc64: Document PGD and PMD layout.
sparc64: Eliminate PTE table memory wastage.
sparc64: Halve the size of PTE tables
sparc64: Only support 4MB huge pages and 8KB base pages.
memory-hotplug: suppress "Trying to free nonexistent resource <XXXXXXXXXXXXXXXX-YYYYYYYYYYYYYYYY>" warning
mm: memcg: clean up mm_match_cgroup() signature
mm: document PageHuge somewhat
mm: use %pK for /proc/vmallocinfo
mm, thp: fix mlock statistics
mm, thp: fix mapped pages avoiding unevictable list on mlock
memory-hotplug: update memory block's state and notify userspace
memory-hotplug: preparation to notify memory block's state at memory hot remove
mm: avoid section mismatch warning for memblock_type_name
make GFP_NOTRACK definition unconditional
cma: decrease cc.nr_migratepages after reclaiming pagelist
CMA: migrate mlocked pages
kpageflags: fix wrong KPF_THP on non-huge compound pages
...
Diffstat (limited to 'mm/fremap.c')
| -rw-r--r-- | mm/fremap.c | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/mm/fremap.c b/mm/fremap.c index 048659c0c03..3899a86851c 100644 --- a/mm/fremap.c +++ b/mm/fremap.c @@ -5,6 +5,7 @@ * * started by Ingo Molnar, Copyright (C) 2002, 2003 */ +#include <linux/export.h> #include <linux/backing-dev.h> #include <linux/mm.h> #include <linux/swap.h> @@ -80,9 +81,10 @@ out: return err; } -static int populate_range(struct mm_struct *mm, struct vm_area_struct *vma, - unsigned long addr, unsigned long size, pgoff_t pgoff) +int generic_file_remap_pages(struct vm_area_struct *vma, unsigned long addr, + unsigned long size, pgoff_t pgoff) { + struct mm_struct *mm = vma->vm_mm; int err; do { @@ -95,9 +97,9 @@ static int populate_range(struct mm_struct *mm, struct vm_area_struct *vma, pgoff++; } while (size); - return 0; - + return 0; } +EXPORT_SYMBOL(generic_file_remap_pages); /** * sys_remap_file_pages - remap arbitrary pages of an existing VM_SHARED vma @@ -167,7 +169,7 @@ SYSCALL_DEFINE5(remap_file_pages, unsigned long, start, unsigned long, size, if (vma->vm_private_data && !(vma->vm_flags & VM_NONLINEAR)) goto out; - if (!(vma->vm_flags & VM_CAN_NONLINEAR)) + if (!vma->vm_ops->remap_pages) goto out; if (start < vma->vm_start || start + size > vma->vm_end) @@ -212,7 +214,7 @@ SYSCALL_DEFINE5(remap_file_pages, unsigned long, start, unsigned long, size, mutex_lock(&mapping->i_mmap_mutex); flush_dcache_mmap_lock(mapping); vma->vm_flags |= VM_NONLINEAR; - vma_prio_tree_remove(vma, &mapping->i_mmap); + vma_interval_tree_remove(vma, &mapping->i_mmap); vma_nonlinear_insert(vma, &mapping->i_mmap_nonlinear); flush_dcache_mmap_unlock(mapping); mutex_unlock(&mapping->i_mmap_mutex); @@ -228,7 +230,7 @@ SYSCALL_DEFINE5(remap_file_pages, unsigned long, start, unsigned long, size, } mmu_notifier_invalidate_range_start(mm, start, start + size); - err = populate_range(mm, vma, start, size, pgoff); + err = vma->vm_ops->remap_pages(vma, start, size, pgoff); mmu_notifier_invalidate_range_end(mm, start, start + size); if (!err && !(flags & MAP_NONBLOCK)) { if (vma->vm_flags & VM_LOCKED) { |