The patch titled Subject: zram-idle-writeback-fixes-and-cleanup-fix has been removed from the -mm tree. Its filename was zram-idle-writeback-fixes-and-cleanup-fix.patch This patch was dropped because it was folded into zram-idle-writeback-fixes-and-cleanup.patch ------------------------------------------------------ From: Minchan Kim <minchan@xxxxxxxxxx> Subject: zram-idle-writeback-fixes-and-cleanup-fix Srinivas reported to me that I missed spin_lock_init in this patch although I have that one in internal tree. Link: http://lkml.kernel.org/r/20190103001601.GA255139@xxxxxxxxxx Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- --- a/drivers/block/zram/zram_drv.c~zram-idle-writeback-fixes-and-cleanup-fix +++ a/drivers/block/zram/zram_drv.c @@ -1907,7 +1907,9 @@ static int zram_add(void) device_id = ret; init_rwsem(&zram->init_lock); - +#ifdef CONFIG_ZRAM_WRITEBACK + spin_lock_init(&zram->wb_limit_lock); +#endif queue = blk_alloc_queue(GFP_KERNEL); if (!queue) { pr_err("Error allocating disk queue for device %d\n", _ Patches currently in -mm which might be from minchan@xxxxxxxxxx are zram-idle-writeback-fixes-and-cleanup.patch