>From the code of 'register_blkdev(...)', the major number range should be in [1..BLKDEV_MAJOR_HASH_SIZE-1] while not [1..BLKDEV_MAJOR_MAX]
in case of calling 'register_blkdev(...) with @major = 0, so correct the wrong info of the function's comments Signed-off-by: Richard Clark <richard.xnu.cl...@gmail.com> Cc: Jens Axboe <ax...@kernel.dk> Cc: xuesong chen <xuesong....@alibaba-inc.com> --- block/genhd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/block/genhd.c b/block/genhd.c index 8b1e9f48957c..db73aa852434 100644 --- a/block/genhd.c +++ b/block/genhd.c @@ -429,7 +429,7 @@ void blkdev_show(struct seq_file *seqf, off_t offset) * then the function returns zero on success, or a negative error code * - if any unused major number was requested with @major = 0 parameter * then the return value is the allocated major number in range - * [1..BLKDEV_MAJOR_MAX-1] or a negative error code otherwise + * [1..BLKDEV_MAJOR_HASH_SIZE-1] or a negative error code otherwise * * See Documentation/admin-guide/devices.txt for the list of allocated * major numbers. -- 2.17.1
