From 7fbdea32328312c65870c397a0a436c3226c8631 Mon Sep 17 00:00:00 2001 From: Wu Fengguang Date: Wed, 23 Sep 2009 20:33:41 +0800 Subject: [PATCH] writeback: kupdate writeback shall not stop when more io is possible Fix the kupdate case, which disregards wbc.more_io and stop writeback prematurely even when there are more inodes to be synced. wbc.more_io should always be respected. Also remove the pages_skipped check. It will set when some page(s) of some inode(s) cannot be written for now. Such inodes will be delayed for a while. This variable has nothing to do with whether there are other writeable inodes. CC: Jan Kara CC: Dave Chinner CC: Peter Zijlstra Signed-off-by: Wu Fengguang Signed-off-by: Jens Axboe --- fs/fs-writeback.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c index 476be9b..551684d 100644 --- a/fs/fs-writeback.c +++ b/fs/fs-writeback.c @@ -753,8 +753,8 @@ static long wb_writeback(struct bdi_writeback *wb, /* * If we ran out of stuff to write, bail unless more_io got set */ - if (wbc.nr_to_write > 0 || wbc.pages_skipped > 0) { - if (wbc.more_io && !wbc.for_kupdate) { + if (wbc.nr_to_write > 0) { + if (wbc.more_io) { if (wbc.nr_to_write < MAX_WRITEBACK_PAGES) continue; /* -- 2.7.4