[DLM] Look for "nodir" in the lockspace mount options

[powerpc.git] / mm / readahead.c

diff --git a/mm/readahead.c b/mm/readahead.c
index 72e7adb..9f0b982 100644 (file)
--- a/mm/readahead.c
+++ b/mm/readahead.c
@@ -38,6 +38,7 @@ file_ra_state_init(struct file_ra_state *ra, struct address_space *mapping)
        ra->ra_pages = mapping->backing_dev_info->ra_pages;
        ra->prev_page = -1;
 }
+EXPORT_SYMBOL_GPL(file_ra_state_init);
 
 /*
  * Return max readahead size for this inode in number-of-pages.
@@ -158,7 +159,7 @@ static int read_pages(struct address_space *mapping, struct file *filp,
 {
        unsigned page_idx;
        struct pagevec lru_pvec;
-       int ret = 0;
+       int ret;
 
        if (mapping->a_ops->readpages) {
                ret = mapping->a_ops->readpages(filp, mapping, pages, nr_pages);
@@ -171,14 +172,17 @@ static int read_pages(struct address_space *mapping, struct file *filp,
                list_del(&page->lru);
                if (!add_to_page_cache(page, mapping,
                                        page->index, GFP_KERNEL)) {
-                       mapping->a_ops->readpage(filp, page);
-                       if (!pagevec_add(&lru_pvec, page))
-                               __pagevec_lru_add(&lru_pvec);
-               } else {
-                       page_cache_release(page);
+                       ret = mapping->a_ops->readpage(filp, page);
+                       if (ret != AOP_TRUNCATED_PAGE) {
+                               if (!pagevec_add(&lru_pvec, page))
+                                       __pagevec_lru_add(&lru_pvec);
+                               continue;
+                       } /* else fall through to release */
                }
+               page_cache_release(page);
        }
        pagevec_lru_add(&lru_pvec);
+       ret = 0;
 out:
        return ret;
 }