diff options
| author | Felix Blyakher <felixb@sgi.com> | 2009-02-09 09:34:45 -0600 |
|---|---|---|
| committer | Felix Blyakher <felixb@sgi.com> | 2009-02-09 09:34:45 -0600 |
| commit | d41d4113f49e16bfab02eff0248282200be21807 (patch) | |
| tree | ae84803c22a09f138023ef62de73712f324bc62d /mm | |
| parent | b58a4cc51f4f569c6a86979890f9b237a504ab6b (diff) | |
| parent | d5b562330ec766292a3ac54ae5e0673610bd5b3d (diff) | |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/memory.c | 2 | ||||
| -rw-r--r-- | mm/mlock.c | 5 | ||||
| -rw-r--r-- | mm/page-writeback.c | 21 |
3 files changed, 20 insertions, 8 deletions
diff --git a/mm/memory.c b/mm/memory.c index 22bfa7a47a0b..baa999e87cd2 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -1999,7 +1999,7 @@ gotten: * Don't let another task, with possibly unlocked vma, * keep the mlocked page. */ - if (vma->vm_flags & VM_LOCKED) { + if ((vma->vm_flags & VM_LOCKED) && old_page) { lock_page(old_page); /* for LRU manipulation */ clear_page_mlock(old_page); unlock_page(old_page); diff --git a/mm/mlock.c b/mm/mlock.c index 028ec482fdd4..037161d61b4e 100644 --- a/mm/mlock.c +++ b/mm/mlock.c @@ -311,7 +311,10 @@ long mlock_vma_pages_range(struct vm_area_struct *vma, is_vm_hugetlb_page(vma) || vma == get_gate_vma(current))) { - return __mlock_vma_pages_range(vma, start, end, 1); + __mlock_vma_pages_range(vma, start, end, 1); + + /* Hide errors from mmap() and other callers */ + return 0; } /* diff --git a/mm/page-writeback.c b/mm/page-writeback.c index b493db7841dc..dc32dae01e5f 100644 --- a/mm/page-writeback.c +++ b/mm/page-writeback.c @@ -1051,13 +1051,22 @@ continue_unlock: } } - if (wbc->sync_mode == WB_SYNC_NONE) { - wbc->nr_to_write--; - if (wbc->nr_to_write <= 0) { - done = 1; - break; - } + if (nr_to_write > 0) + nr_to_write--; + else if (wbc->sync_mode == WB_SYNC_NONE) { + /* + * We stop writing back only if we are not + * doing integrity sync. In case of integrity + * sync we have to keep going because someone + * may be concurrently dirtying pages, and we + * might have synced a lot of newly appeared + * dirty pages, but have not synced all of the + * old dirty pages. + */ + done = 1; + break; } + if (wbc->nonblocking && bdi_write_congested(bdi)) { wbc->encountered_congestion = 1; done = 1; |