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authorWu Fengguang <fengguang.wu@intel.com>2009-09-23 20:33:41 +0800
committerJens Axboe <jens.axboe@oracle.com>2009-09-25 18:08:25 +0200
commit7fbdea32328312c65870c397a0a436c3226c8631 (patch)
treea92cbf127bca8925afd7c2b22b372d02b32e48f3
parentd3ddec7635b6fb37cb49e3553bdeea59642be653 (diff)
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 <jack@suse.cz> CC: Dave Chinner <david@fromorbit.com> CC: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Wu Fengguang <fengguang.wu@intel.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
-rw-r--r--fs/fs-writeback.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index 476be9b1088..551684de139 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;
/*