The patch titled writeback: elevate queue_io() into wb_writeback() has been removed from the -mm tree. Its filename was writeback-elevate-queue_io-into-wb_writeback.patch This patch was dropped because it was merged into mainline or a subsystem tree The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/ ------------------------------------------------------ Subject: writeback: elevate queue_io() into wb_writeback() From: Wu Fengguang <fengguang.wu@xxxxxxxxx> Code refactor for more logical code layout. No behavior change. - remove the mis-named __writeback_inodes_sb() - wb_writeback()/writeback_inodes_wb() will decide when to queue_io() before calling __writeback_inodes_wb() Signed-off-by: Wu Fengguang <fengguang.wu@xxxxxxxxx> Cc: Christoph Hellwig <hch@xxxxxx> Cc: Jan Kara <jack@xxxxxxx> Cc: Mel Gorman <mel@xxxxxxxxxxxxxxxxxx> Cc: Dave Chinner <david@xxxxxxxxxxxxx> Cc: Trond Myklebust <Trond.Myklebust@xxxxxxxxxx> Cc: Itaru Kitayama <kitayama@xxxxxxxxxxxxx> Cc: Minchan Kim <minchan.kim@xxxxxxxxx> Cc: Nick Piggin <npiggin@xxxxxxxxx> Cc: Jens Axboe <axboe@xxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- fs/fs-writeback.c | 27 ++++++++++++--------------- 1 file changed, 12 insertions(+), 15 deletions(-) diff -puN fs/fs-writeback.c~writeback-elevate-queue_io-into-wb_writeback fs/fs-writeback.c --- a/fs/fs-writeback.c~writeback-elevate-queue_io-into-wb_writeback +++ a/fs/fs-writeback.c @@ -570,17 +570,13 @@ static int writeback_sb_inodes(struct su return 1; } -void writeback_inodes_wb(struct bdi_writeback *wb, - struct writeback_control *wbc) +static void __writeback_inodes_wb(struct bdi_writeback *wb, + struct writeback_control *wbc) { int ret = 0; if (!wbc->wb_start) wbc->wb_start = jiffies; /* livelock avoidance */ - spin_lock(&wb->list_lock); - - if (list_empty(&wb->b_io)) - queue_io(wb, wbc); while (!list_empty(&wb->b_io)) { struct inode *inode = wb_inode(wb->b_io.prev); @@ -596,19 +592,16 @@ void writeback_inodes_wb(struct bdi_writ if (ret) break; } - spin_unlock(&wb->list_lock); /* Leave any unwritten inodes on b_io */ } -static void __writeback_inodes_sb(struct super_block *sb, - struct bdi_writeback *wb, struct writeback_control *wbc) +void writeback_inodes_wb(struct bdi_writeback *wb, + struct writeback_control *wbc) { - WARN_ON(!rwsem_is_locked(&sb->s_umount)); - spin_lock(&wb->list_lock); if (list_empty(&wb->b_io)) queue_io(wb, wbc); - writeback_sb_inodes(sb, wb, wbc, true); + __writeback_inodes_wb(wb, wbc); spin_unlock(&wb->list_lock); } @@ -674,7 +667,7 @@ static long wb_writeback(struct bdi_writ * The intended call sequence for WB_SYNC_ALL writeback is: * * wb_writeback() - * __writeback_inodes_sb() <== called only once + * writeback_sb_inodes() <== called only once * write_cache_pages() <== called once for each inode * (quickly) tag currently dirty pages * (maybe slowly) sync all tagged pages @@ -722,10 +715,14 @@ static long wb_writeback(struct bdi_writ retry: trace_wbc_writeback_start(&wbc, wb->bdi); + spin_lock(&wb->list_lock); + if (list_empty(&wb->b_io)) + queue_io(wb, &wbc); if (work->sb) - __writeback_inodes_sb(work->sb, wb, &wbc); + writeback_sb_inodes(work->sb, wb, &wbc, true); else - writeback_inodes_wb(wb, &wbc); + __writeback_inodes_wb(wb, &wbc); + spin_unlock(&wb->list_lock); trace_wbc_writeback_written(&wbc, wb->bdi); work->nr_pages -= write_chunk - wbc.nr_to_write; _ Patches currently in -mm which might be from fengguang.wu@xxxxxxxxx are linux-next.patch bdi_min_ratio-never-shrinks-ultimately-preventing-valid-setting-of-min_ratio.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html