tree 8bc79f75d754f5d32e373a9bdf18d01729e24e6e
parent 2022b5e614e63926461029cbe1fe74a1cac1abe6
author Ming Lei <ming.lei@redhat.com> 1572856013 +0800
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1576921338 +0100

blk-mq: make sure that line break can be printed

commit d2c9be89f8ebe7ebcc97676ac40f8dec1cf9b43a upstream.

8962842ca5ab ("blk-mq: avoid sysfs buffer overflow with too many CPU cores")
avoids sysfs buffer overflow, and reserves one character for line break.
However, the last snprintf() doesn't get correct 'size' parameter passed
in, so fixed it.

Fixes: 8962842ca5ab ("blk-mq: avoid sysfs buffer overflow with too many CPU cores")
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Cc: Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@toshiba.co.jp>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>