This avoids delaying writeback for an expired (XFS) inode with lots of dirty pages, but no active dirtier at the moment. Previously we only do that for the kupdate case. CC: Dave Chinner CC: Christoph Hellwig Acked-by: Jan Kara Signed-off-by: Wu Fengguang --- fs/fs-writeback.c | 20 +++++++------------- 1 file changed, 7 insertions(+), 13 deletions(-) --- linux-next.orig/fs/fs-writeback.c 2010-07-11 08:53:44.000000000 +0800 +++ linux-next/fs/fs-writeback.c 2010-07-11 08:57:35.000000000 +0800 @@ -367,18 +367,7 @@ writeback_single_inode(struct inode *ino spin_lock(&inode_lock); inode->i_state &= ~I_SYNC; if (!(inode->i_state & I_FREEING)) { - 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) { - /* - * 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)) { + if (mapping_tagged(mapping, PAGECACHE_TAG_DIRTY)) { /* * We didn't write back all the pages. nfs_writepages() * sometimes bales out without doing anything. Redirty @@ -400,7 +389,6 @@ writeback_single_inode(struct inode *ino * 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 @@ -423,6 +411,12 @@ select_queue: inode->i_state |= I_DIRTY_PAGES; redirty_tail(inode); } + } else if (inode->i_state & I_DIRTY) { + /* + * At least XFS will redirty the inode during the + * writeback (delalloc) and on io completion (isize). + */ + redirty_tail(inode); } else if (atomic_read(&inode->i_count)) { /* * The inode is clean, inuse -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/