Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next

[pandora-kernel.git] / fs / fscache / page.c

diff --git a/fs/fscache/page.c b/fs/fscache/page.c
index a2a5d19..3f7a59b 100644 (file)
--- a/fs/fscache/page.c
+++ b/fs/fscache/page.c
@@ -954,3 +954,43 @@ void fscache_mark_pages_cached(struct fscache_retrieval *op,
        pagevec_reinit(pagevec);
 }
 EXPORT_SYMBOL(fscache_mark_pages_cached);
+
+/*
+ * Uncache all the pages in an inode that are marked PG_fscache, assuming them
+ * to be associated with the given cookie.
+ */
+void __fscache_uncache_all_inode_pages(struct fscache_cookie *cookie,
+                                      struct inode *inode)
+{
+       struct address_space *mapping = inode->i_mapping;
+       struct pagevec pvec;
+       pgoff_t next;
+       int i;
+
+       _enter("%p,%p", cookie, inode);
+
+       if (!mapping || mapping->nrpages == 0) {
+               _leave(" [no pages]");
+               return;
+       }
+
+       pagevec_init(&pvec, 0);
+       next = 0;
+       do {
+               if (!pagevec_lookup(&pvec, mapping, next, PAGEVEC_SIZE))
+                       break;
+               for (i = 0; i < pagevec_count(&pvec); i++) {
+                       struct page *page = pvec.pages[i];
+                       next = page->index;
+                       if (PageFsCache(page)) {
+                               __fscache_wait_on_page_write(cookie, page);
+                               __fscache_uncache_page(cookie, page);
+                       }
+               }
+               pagevec_release(&pvec);
+               cond_resched();
+       } while (++next);
+
+       _leave("");
+}
+EXPORT_SYMBOL(__fscache_uncache_all_inode_pages);