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authorWu Fengguang <fengguang.wu@intel.com>2011-04-23 21:26:07 +0400
committerWu Fengguang <fengguang.wu@intel.com>2011-06-08 04:25:22 +0400
commite185dda89d69cde142b48059413a03561f41f78a (patch)
tree505fa875bdf7968892882a1f93993c9114d768b0 /include/linux/writeback.h
parente8dfc30582995ae12454cda517b17d6294175b07 (diff)
downloadlinux-e185dda89d69cde142b48059413a03561f41f78a.tar.xz
writeback: avoid extra sync work at enqueue time
This removes writeback_control.wb_start and does more straightforward sync livelock prevention by setting .older_than_this to prevent extra inodes from being enqueued in the first place. Acked-by: Jan Kara <jack@suse.cz> Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Diffstat (limited to 'include/linux/writeback.h')
-rw-r--r--include/linux/writeback.h3
1 files changed, 0 insertions, 3 deletions
diff --git a/include/linux/writeback.h b/include/linux/writeback.h
index c2d957fb38d3..d8e96a480850 100644
--- a/include/linux/writeback.h
+++ b/include/linux/writeback.h
@@ -26,9 +26,6 @@ struct writeback_control {
enum writeback_sync_modes sync_mode;
unsigned long *older_than_this; /* If !NULL, only write back inodes
older than this */
- unsigned long wb_start; /* Time writeback_inodes_wb was
- called. This is needed to avoid
- extra jobs and livelock */
long nr_to_write; /* Write this many pages, and decrement
this for each page written */
long pages_skipped; /* Pages which were not written */