diff options
| author | Daniel Vetter <daniel.vetter@ffwll.ch> | 2013-03-19 09:47:30 +0100 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2013-03-19 09:47:30 +0100 |
| commit | 0d4a42f6bd298e826620585e766a154ab460617a (patch) | |
| tree | 406d8f7778691d858dbe3e48e4bbb10e99c0a58a /mm/rmap.c | |
| parent | d62b4892f3d9f7dd2002e5309be10719d6805b0f (diff) | |
| parent | a937536b868b8369b98967929045f1df54234323 (diff) | |
Merge tag 'v3.9-rc3' into drm-intel-next-queued
Backmerge so that I can merge Imre Deak's coalesced sg entries fixes,
which depend upon the new for_each_sg_page introduce in
commit a321e91b6d73ed011ffceed384c40d2785cf723b
Author: Imre Deak <imre.deak@intel.com>
Date: Wed Feb 27 17:02:56 2013 -0800
lib/scatterlist: add simple page iterator
The merge itself is just two trivial conflicts:
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'mm/rmap.c')
| -rw-r--r-- | mm/rmap.c | 30 |
1 files changed, 3 insertions, 27 deletions
diff --git a/mm/rmap.c b/mm/rmap.c index 2c78f8cadc9..807c96bf0dc 100644 --- a/mm/rmap.c +++ b/mm/rmap.c @@ -105,7 +105,7 @@ static inline void anon_vma_free(struct anon_vma *anon_vma) */ if (rwsem_is_locked(&anon_vma->root->rwsem)) { anon_vma_lock_write(anon_vma); - anon_vma_unlock(anon_vma); + anon_vma_unlock_write(anon_vma); } kmem_cache_free(anon_vma_cachep, anon_vma); @@ -191,7 +191,7 @@ int anon_vma_prepare(struct vm_area_struct *vma) avc = NULL; } spin_unlock(&mm->page_table_lock); - anon_vma_unlock(anon_vma); + anon_vma_unlock_write(anon_vma); if (unlikely(allocated)) put_anon_vma(allocated); @@ -308,7 +308,7 @@ int anon_vma_fork(struct vm_area_struct *vma, struct vm_area_struct *pvma) vma->anon_vma = anon_vma; anon_vma_lock_write(anon_vma); anon_vma_chain_link(vma, avc, anon_vma); - anon_vma_unlock(anon_vma); + anon_vma_unlock_write(anon_vma); return 0; @@ -1126,7 +1126,6 @@ void page_add_file_rmap(struct page *page) */ void page_remove_rmap(struct page *page) { - struct address_space *mapping = page_mapping(page); bool anon = PageAnon(page); bool locked; unsigned long flags; @@ -1144,29 +1143,6 @@ void page_remove_rmap(struct page *page) goto out; /* - * Now that the last pte has gone, s390 must transfer dirty - * flag from storage key to struct page. We can usually skip - * this if the page is anon, so about to be freed; but perhaps - * not if it's in swapcache - there might be another pte slot - * containing the swap entry, but page not yet written to swap. - * - * And we can skip it on file pages, so long as the filesystem - * participates in dirty tracking (note that this is not only an - * optimization but also solves problems caused by dirty flag in - * storage key getting set by a write from inside kernel); but need to - * catch shm and tmpfs and ramfs pages which have been modified since - * creation by read fault. - * - * Note that mapping must be decided above, before decrementing - * mapcount (which luckily provides a barrier): once page is unmapped, - * it could be truncated and page->mapping reset to NULL at any moment. - * Note also that we are relying on page_mapping(page) to set mapping - * to &swapper_space when PageSwapCache(page). - */ - if (mapping && !mapping_cap_account_dirty(mapping) && - page_test_and_clear_dirty(page_to_pfn(page), 1)) - set_page_dirty(page); - /* * Hugepages are not counted in NR_ANON_PAGES nor NR_FILE_MAPPED * and not charged by memcg for now. */ |