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authorNick Piggin <npiggin@suse.de>2008-04-28 02:12:10 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-04-28 08:58:18 -0700
commit3c18ddd160d1fcd46d1131d9ad6c594dd8e9af99 (patch)
tree7307ba1ae4bdb99d1363eb59b1ebefcf5295c8ef /mm
parent4d3d5b41a72b52555d43efbfc4ccde6ba6e5444f (diff)
downloadvexpress-lsk-3c18ddd160d1fcd46d1131d9ad6c594dd8e9af99.tar.gz
mm: remove nopage
Nothing in the tree uses nopage any more. Remove support for it in the core mm code and documentation (and a few stray references to it in comments). Signed-off-by: Nick Piggin <npiggin@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
-rw-r--r--mm/memory.c22
-rw-r--r--mm/mincore.c2
-rw-r--r--mm/rmap.c1
3 files changed, 6 insertions, 19 deletions
diff --git a/mm/memory.c b/mm/memory.c
index 0d14d1e58a5..46958fb97c2 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -1057,8 +1057,7 @@ int get_user_pages(struct task_struct *tsk, struct mm_struct *mm,
if (pages)
foll_flags |= FOLL_GET;
if (!write && !(vma->vm_flags & VM_LOCKED) &&
- (!vma->vm_ops || (!vma->vm_ops->nopage &&
- !vma->vm_ops->fault)))
+ (!vma->vm_ops || !vma->vm_ops->fault))
foll_flags |= FOLL_ANON;
do {
@@ -2199,20 +2198,9 @@ static int __do_fault(struct mm_struct *mm, struct vm_area_struct *vma,
BUG_ON(vma->vm_flags & VM_PFNMAP);
- if (likely(vma->vm_ops->fault)) {
- ret = vma->vm_ops->fault(vma, &vmf);
- if (unlikely(ret & (VM_FAULT_ERROR | VM_FAULT_NOPAGE)))
- return ret;
- } else {
- /* Legacy ->nopage path */
- ret = 0;
- vmf.page = vma->vm_ops->nopage(vma, address & PAGE_MASK, &ret);
- /* no page was available -- either SIGBUS or OOM */
- if (unlikely(vmf.page == NOPAGE_SIGBUS))
- return VM_FAULT_SIGBUS;
- else if (unlikely(vmf.page == NOPAGE_OOM))
- return VM_FAULT_OOM;
- }
+ ret = vma->vm_ops->fault(vma, &vmf);
+ if (unlikely(ret & (VM_FAULT_ERROR | VM_FAULT_NOPAGE)))
+ return ret;
/*
* For consistency in subsequent calls, make the faulted page always
@@ -2458,7 +2446,7 @@ static inline int handle_pte_fault(struct mm_struct *mm,
if (!pte_present(entry)) {
if (pte_none(entry)) {
if (vma->vm_ops) {
- if (vma->vm_ops->fault || vma->vm_ops->nopage)
+ if (likely(vma->vm_ops->fault))
return do_linear_fault(mm, vma, address,
pte, pmd, write_access, entry);
if (unlikely(vma->vm_ops->nopfn))
diff --git a/mm/mincore.c b/mm/mincore.c
index 5efe0ded69b..5178800bc12 100644
--- a/mm/mincore.c
+++ b/mm/mincore.c
@@ -33,7 +33,7 @@ static unsigned char mincore_page(struct address_space *mapping, pgoff_t pgoff)
* When tmpfs swaps out a page from a file, any process mapping that
* file will not get a swp_entry_t in its pte, but rather it is like
* any other file mapping (ie. marked !present and faulted in with
- * tmpfs's .nopage). So swapped out tmpfs mappings are tested here.
+ * tmpfs's .fault). So swapped out tmpfs mappings are tested here.
*
* However when tmpfs moves the page from pagecache and into swapcache,
* it is still in core, but the find_get_page below won't find it.
diff --git a/mm/rmap.c b/mm/rmap.c
index e9bb6b1093f..bf0a5b7cfb8 100644
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -662,7 +662,6 @@ void page_remove_rmap(struct page *page, struct vm_area_struct *vma)
printk (KERN_EMERG " page->mapping = %p\n", page->mapping);
print_symbol (KERN_EMERG " vma->vm_ops = %s\n", (unsigned long)vma->vm_ops);
if (vma->vm_ops) {
- print_symbol (KERN_EMERG " vma->vm_ops->nopage = %s\n", (unsigned long)vma->vm_ops->nopage);
print_symbol (KERN_EMERG " vma->vm_ops->fault = %s\n", (unsigned long)vma->vm_ops->fault);
}
if (vma->vm_file && vma->vm_file->f_op)