writeback: trace event writeback_single_inode

[deliverable/linux.git] / fs / fs-writeback.c

diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index f43c479feee9b54efe001da166efb29d9de2d16e..5185fad48b62d825cd12961eff191556f9eb5930 100644 (file)
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -346,6 +346,7 @@ writeback_single_inode(struct inode *inode, struct bdi_writeback *wb,
                       struct writeback_control *wbc)
 {
        struct address_space *mapping = inode->i_mapping;
+       long nr_to_write = wbc->nr_to_write;
        unsigned dirty;
        int ret;
 
@@ -368,6 +369,8 @@ writeback_single_inode(struct inode *inode, struct bdi_writeback *wb,
                 */
                if (wbc->sync_mode != WB_SYNC_ALL) {
                        requeue_io(inode, wb);
+                       trace_writeback_single_inode_requeue(inode, wbc,
+                                                            nr_to_write);
                        return 0;
                }
 
@@ -467,6 +470,7 @@ writeback_single_inode(struct inode *inode, struct bdi_writeback *wb,
                }
        }
        inode_sync_complete(inode);
+       trace_writeback_single_inode(inode, wbc, nr_to_write);
        return ret;
 }