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authorSamuel Thibault <samuel.thibault@ens-lyon.org>2013-07-27 22:07:53 +0000
committerSamuel Thibault <samuel.thibault@ens-lyon.org>2013-07-27 22:07:53 +0000
commit4fbe7358c7747a9165f776eb19addbb9baf7def2 (patch)
treebc7076b4f6d10c2cc2942539bb666e50f0b66954 /libdde_linux26/contrib/include/linux/rmap.h
parent21adb5284111190057db245cfc2b54091920c373 (diff)
rename libdde_linux26 into libdde-linux26 to make dpkg-source happy
Diffstat (limited to 'libdde_linux26/contrib/include/linux/rmap.h')
-rw-r--r--libdde_linux26/contrib/include/linux/rmap.h146
1 files changed, 0 insertions, 146 deletions
diff --git a/libdde_linux26/contrib/include/linux/rmap.h b/libdde_linux26/contrib/include/linux/rmap.h
deleted file mode 100644
index b35bc0e1..00000000
--- a/libdde_linux26/contrib/include/linux/rmap.h
+++ /dev/null
@@ -1,146 +0,0 @@
-#ifndef _LINUX_RMAP_H
-#define _LINUX_RMAP_H
-/*
- * Declarations for Reverse Mapping functions in mm/rmap.c
- */
-
-#include <linux/list.h>
-#include <linux/slab.h>
-#include <linux/mm.h>
-#include <linux/spinlock.h>
-#include <linux/memcontrol.h>
-
-/*
- * The anon_vma heads a list of private "related" vmas, to scan if
- * an anonymous page pointing to this anon_vma needs to be unmapped:
- * the vmas on the list will be related by forking, or by splitting.
- *
- * Since vmas come and go as they are split and merged (particularly
- * in mprotect), the mapping field of an anonymous page cannot point
- * directly to a vma: instead it points to an anon_vma, on whose list
- * the related vmas can be easily linked or unlinked.
- *
- * After unlinking the last vma on the list, we must garbage collect
- * the anon_vma object itself: we're guaranteed no page can be
- * pointing to this anon_vma once its vma list is empty.
- */
-struct anon_vma {
- spinlock_t lock; /* Serialize access to vma list */
- /*
- * NOTE: the LSB of the head.next is set by
- * mm_take_all_locks() _after_ taking the above lock. So the
- * head must only be read/written after taking the above lock
- * to be sure to see a valid next pointer. The LSB bit itself
- * is serialized by a system wide lock only visible to
- * mm_take_all_locks() (mm_all_locks_mutex).
- */
- struct list_head head; /* List of private "related" vmas */
-};
-
-#ifdef CONFIG_MMU
-
-static inline void anon_vma_lock(struct vm_area_struct *vma)
-{
- struct anon_vma *anon_vma = vma->anon_vma;
- if (anon_vma)
- spin_lock(&anon_vma->lock);
-}
-
-static inline void anon_vma_unlock(struct vm_area_struct *vma)
-{
- struct anon_vma *anon_vma = vma->anon_vma;
- if (anon_vma)
- spin_unlock(&anon_vma->lock);
-}
-
-/*
- * anon_vma helper functions.
- */
-void anon_vma_init(void); /* create anon_vma_cachep */
-int anon_vma_prepare(struct vm_area_struct *);
-void __anon_vma_merge(struct vm_area_struct *, struct vm_area_struct *);
-void anon_vma_unlink(struct vm_area_struct *);
-void anon_vma_link(struct vm_area_struct *);
-void __anon_vma_link(struct vm_area_struct *);
-
-/*
- * rmap interfaces called when adding or removing pte of page
- */
-void page_add_anon_rmap(struct page *, struct vm_area_struct *, unsigned long);
-void page_add_new_anon_rmap(struct page *, struct vm_area_struct *, unsigned long);
-void page_add_file_rmap(struct page *);
-void page_remove_rmap(struct page *);
-
-#ifdef CONFIG_DEBUG_VM
-void page_dup_rmap(struct page *page, struct vm_area_struct *vma, unsigned long address);
-#else
-static inline void page_dup_rmap(struct page *page, struct vm_area_struct *vma, unsigned long address)
-{
- atomic_inc(&page->_mapcount);
-}
-#endif
-
-/*
- * Called from mm/vmscan.c to handle paging out
- */
-int page_referenced(struct page *, int is_locked, struct mem_cgroup *cnt);
-int try_to_unmap(struct page *, int ignore_refs);
-
-/*
- * Called from mm/filemap_xip.c to unmap empty zero page
- */
-pte_t *page_check_address(struct page *, struct mm_struct *,
- unsigned long, spinlock_t **, int);
-
-/*
- * Used by swapoff to help locate where page is expected in vma.
- */
-unsigned long page_address_in_vma(struct page *, struct vm_area_struct *);
-
-/*
- * Cleans the PTEs of shared mappings.
- * (and since clean PTEs should also be readonly, write protects them too)
- *
- * returns the number of cleaned PTEs.
- */
-int page_mkclean(struct page *);
-
-#ifdef CONFIG_UNEVICTABLE_LRU
-/*
- * called in munlock()/munmap() path to check for other vmas holding
- * the page mlocked.
- */
-int try_to_munlock(struct page *);
-#else
-static inline int try_to_munlock(struct page *page)
-{
- return 0; /* a.k.a. SWAP_SUCCESS */
-}
-#endif
-
-#else /* !CONFIG_MMU */
-
-#define anon_vma_init() do {} while (0)
-#define anon_vma_prepare(vma) (0)
-#define anon_vma_link(vma) do {} while (0)
-
-#define page_referenced(page,l,cnt) TestClearPageReferenced(page)
-#define try_to_unmap(page, refs) SWAP_FAIL
-
-static inline int page_mkclean(struct page *page)
-{
- return 0;
-}
-
-
-#endif /* CONFIG_MMU */
-
-/*
- * Return values of try_to_unmap
- */
-#define SWAP_SUCCESS 0
-#define SWAP_AGAIN 1
-#define SWAP_FAIL 2
-#define SWAP_MLOCK 3
-
-#endif /* _LINUX_RMAP_H */