]> err.no Git - linux-2.6/blobdiff - mm/vmscan.c
[PATCH] More page migration: use migration entries for file pages
[linux-2.6] / mm / vmscan.c
index 46be8a02280e70f1526e518a820340977a3afc69..71a02e2950379626001ea4d7d87f46a875ee7c45 100644 (file)
@@ -290,11 +290,23 @@ static void handle_write_error(struct address_space *mapping,
        unlock_page(page);
 }
 
+/* possible outcome of pageout() */
+typedef enum {
+       /* failed to write page out, page is locked */
+       PAGE_KEEP,
+       /* move page to the active list, page is locked */
+       PAGE_ACTIVATE,
+       /* page has been sent to the disk successfully, page is unlocked */
+       PAGE_SUCCESS,
+       /* page is clean and locked */
+       PAGE_CLEAN,
+} pageout_t;
+
 /*
  * pageout is called by shrink_page_list() for each dirty page.
  * Calls ->writepage().
  */
-pageout_t pageout(struct page *page, struct address_space *mapping)
+static pageout_t pageout(struct page *page, struct address_space *mapping)
 {
        /*
         * If the page is dirty, only perform writeback if that write
@@ -339,6 +351,8 @@ pageout_t pageout(struct page *page, struct address_space *mapping)
                struct writeback_control wbc = {
                        .sync_mode = WB_SYNC_NONE,
                        .nr_to_write = SWAP_CLUSTER_MAX,
+                       .range_start = 0,
+                       .range_end = LLONG_MAX,
                        .nonblocking = 1,
                        .for_reclaim = 1,
                };