6.1-stable review patch. If anyone has any objections, please let me know.
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From: Li Chen chenl311@chinatelecom.cn
commit 3179a5f7f86bcc3acd5d6fb2a29f891ef5615852 upstream.
loop devices under heavy stress-ng loop streessor can trigger many capacity change events in a short time. Each event prints an info message from set_capacity_and_notify(), flooding the console and contributing to soft lockups on slow consoles.
Switch the printk in set_capacity_and_notify() to pr_info_ratelimited() so frequent capacity changes do not spam the log while still reporting occasional changes.
Cc: stable@vger.kernel.org Signed-off-by: Li Chen chenl311@chinatelecom.cn Reviewed-by: Chaitanya Kulkarni kch@nvidia.com Reviewed-by: Bart Van Assche bvanassche@acm.org Signed-off-by: Jens Axboe axboe@kernel.dk Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- block/genhd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/block/genhd.c +++ b/block/genhd.c @@ -88,7 +88,7 @@ bool set_capacity_and_notify(struct gend (disk->flags & GENHD_FL_HIDDEN)) return false;
- pr_info("%s: detected capacity change from %lld to %lld\n", + pr_info_ratelimited("%s: detected capacity change from %lld to %lld\n", disk->disk_name, capacity, size);
/*