mmap: handle mlocked pages during map, remap, unmap
[linux-2.6.git] / mm / truncate.c
index e83e4b1..1229211 100644 (file)
@@ -18,6 +18,7 @@
 #include <linux/task_io_accounting_ops.h>
 #include <linux/buffer_head.h> /* grr. try_to_release_page,
                                   do_invalidatepage */
+#include "internal.h"
 
 
 /**
@@ -103,6 +104,7 @@ truncate_complete_page(struct address_space *mapping, struct page *page)
 
        cancel_dirty_page(page, PAGE_CACHE_SIZE);
 
+       clear_page_mlock(page);
        remove_from_page_cache(page);
        ClearPageMappedToDisk(page);
        page_cache_release(page);       /* pagecache ref */
@@ -127,6 +129,7 @@ invalidate_complete_page(struct address_space *mapping, struct page *page)
        if (PagePrivate(page) && !try_to_release_page(page, 0))
                return 0;
 
+       clear_page_mlock(page);
        ret = remove_mapping(mapping, page);
 
        return ret;
@@ -352,6 +355,7 @@ invalidate_complete_page2(struct address_space *mapping, struct page *page)
        if (PageDirty(page))
                goto failed;
 
+       clear_page_mlock(page);
        BUG_ON(PagePrivate(page));
        __remove_from_page_cache(page);
        spin_unlock_irq(&mapping->tree_lock);