diff options
| author | Curt Wohlgemuth <curtw@google.com> | 2011-10-08 05:51:56 +0200 |
|---|---|---|
| committer | Wu Fengguang <fengguang.wu@intel.com> | 2011-10-30 17:33:27 +0100 |
| commit | ad4e38dd6a33bb3a4882c487d7abe621e583b982 (patch) | |
| tree | 5b78b8929ade5372b2e24d4c1793f8cb39962146 | |
| parent | writeback: trace event balance_dirty_pages (diff) | |
| download | linux-ad4e38dd6a33bb3a4882c487d7abe621e583b982.tar.xz linux-ad4e38dd6a33bb3a4882c487d7abe621e583b982.zip | |
writeback: send work item to queue_io, move_expired_inodes
Instead of sending ->older_than_this to queue_io() and
move_expired_inodes(), send the entire wb_writeback_work
structure. There are other fields of a work item that are
useful in these routines and in tracepoints.
Acked-by: Jan Kara <jack@suse.cz>
Signed-off-by: Curt Wohlgemuth <curtw@google.com>
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
| -rw-r--r-- | fs/fs-writeback.c | 16 | ||||
| -rw-r--r-- | include/trace/events/writeback.h | 5 |
2 files changed, 11 insertions, 10 deletions
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c index 6401cd76f109..c51029693600 100644 --- a/fs/fs-writeback.c +++ b/fs/fs-writeback.c @@ -251,7 +251,7 @@ static bool inode_dirtied_after(struct inode *inode, unsigned long t) */ static int move_expired_inodes(struct list_head *delaying_queue, struct list_head *dispatch_queue, - unsigned long *older_than_this) + struct wb_writeback_work *work) { LIST_HEAD(tmp); struct list_head *pos, *node; @@ -262,8 +262,8 @@ static int move_expired_inodes(struct list_head *delaying_queue, while (!list_empty(delaying_queue)) { inode = wb_inode(delaying_queue->prev); - if (older_than_this && - inode_dirtied_after(inode, *older_than_this)) + if (work->older_than_this && + inode_dirtied_after(inode, *work->older_than_this)) break; if (sb && sb != inode->i_sb) do_sb_sort = 1; @@ -302,13 +302,13 @@ out: * | * +--> dequeue for IO */ -static void queue_io(struct bdi_writeback *wb, unsigned long *older_than_this) +static void queue_io(struct bdi_writeback *wb, struct wb_writeback_work *work) { int moved; assert_spin_locked(&wb->list_lock); list_splice_init(&wb->b_more_io, &wb->b_io); - moved = move_expired_inodes(&wb->b_dirty, &wb->b_io, older_than_this); - trace_writeback_queue_io(wb, older_than_this, moved); + moved = move_expired_inodes(&wb->b_dirty, &wb->b_io, work); + trace_writeback_queue_io(wb, work, moved); } static int write_inode(struct inode *inode, struct writeback_control *wbc) @@ -651,7 +651,7 @@ long writeback_inodes_wb(struct bdi_writeback *wb, long nr_pages) spin_lock(&wb->list_lock); if (list_empty(&wb->b_io)) - queue_io(wb, NULL); + queue_io(wb, &work); __writeback_inodes_wb(wb, &work); spin_unlock(&wb->list_lock); @@ -745,7 +745,7 @@ static long wb_writeback(struct bdi_writeback *wb, trace_writeback_start(wb->bdi, work); if (list_empty(&wb->b_io)) - queue_io(wb, work->older_than_this); + queue_io(wb, work); if (work->sb) progress = writeback_sb_inodes(work->sb, wb, work); else diff --git a/include/trace/events/writeback.h b/include/trace/events/writeback.h index 0ce9f06f58c2..1261db3916cc 100644 --- a/include/trace/events/writeback.h +++ b/include/trace/events/writeback.h @@ -157,9 +157,9 @@ DEFINE_WBC_EVENT(wbc_writepage); TRACE_EVENT(writeback_queue_io, TP_PROTO(struct bdi_writeback *wb, - unsigned long *older_than_this, + struct wb_writeback_work *work, int moved), - TP_ARGS(wb, older_than_this, moved), + TP_ARGS(wb, work, moved), TP_STRUCT__entry( __array(char, name, 32) __field(unsigned long, older) @@ -167,6 +167,7 @@ TRACE_EVENT(writeback_queue_io, __field(int, moved) ), TP_fast_assign( + unsigned long *older_than_this = work->older_than_this; strncpy(__entry->name, dev_name(wb->bdi->dev), 32); __entry->older = older_than_this ? *older_than_this : 0; __entry->age = older_than_this ? |