pata_ali: trivial fix of a very frequent spelling mistake
[safe/jmp/linux-2.6] / fs / fs-writeback.c
index c6bf775..9d5360c 100644 (file)
@@ -250,9 +250,11 @@ static void bdi_sync_writeback(struct backing_dev_info *bdi,
  *   completion. Caller need not hold sb s_umount semaphore.
  *
  */
-void bdi_start_writeback(struct backing_dev_info *bdi, long nr_pages)
+void bdi_start_writeback(struct backing_dev_info *bdi, struct super_block *sb,
+                        long nr_pages)
 {
        struct wb_writeback_args args = {
+               .sb             = sb,
                .sync_mode      = WB_SYNC_NONE,
                .nr_pages       = nr_pages,
                .range_cyclic   = 1,
@@ -474,10 +476,15 @@ writeback_single_inode(struct inode *inode, struct writeback_control *wbc)
        spin_lock(&inode_lock);
        inode->i_state &= ~I_SYNC;
        if (!(inode->i_state & (I_FREEING | I_CLEAR))) {
-               if (inode->i_state & I_DIRTY) {
+               if ((inode->i_state & I_DIRTY_PAGES) && wbc->for_kupdate) {
+                       /*
+                        * More pages get dirtied by a fast dirtier.
+                        */
+                       goto select_queue;
+               } else if (inode->i_state & I_DIRTY) {
                        /*
-                        * Someone redirtied the inode while were writing back
-                        * the pages.
+                        * At least XFS will redirty the inode during the
+                        * writeback (delalloc) and on io completion (isize).
                         */
                        redirty_tail(inode);
                } else if (mapping_tagged(mapping, PAGECACHE_TAG_DIRTY)) {
@@ -502,6 +509,7 @@ writeback_single_inode(struct inode *inode, struct writeback_control *wbc)
                                 * soon as the queue becomes uncongested.
                                 */
                                inode->i_state |= I_DIRTY_PAGES;
+select_queue:
                                if (wbc->nr_to_write <= 0) {
                                        /*
                                         * slice used up: queue for next turn
@@ -1200,7 +1208,7 @@ void writeback_inodes_sb(struct super_block *sb)
        nr_to_write = nr_dirty + nr_unstable +
                        (inodes_stat.nr_inodes - inodes_stat.nr_unused);
 
-       bdi_writeback_all(sb, nr_to_write);
+       bdi_start_writeback(sb->s_bdi, sb, nr_to_write);
 }
 EXPORT_SYMBOL(writeback_inodes_sb);