This is a note to let you know that I've just added the patch titled PM: hibernate: remove the bogus call to get_gendisk() in software_resume() to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: pm-hibernate-remove-the-bogus-call-to-get_gendisk-in.patch and it can be found in the queue-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 6997c5a070d184a0c7f36d380c06a9dacb43fabb Author: Christoph Hellwig <hch@xxxxxx> Date: Fri Sep 25 18:14:47 2020 +0200 PM: hibernate: remove the bogus call to get_gendisk() in software_resume() [ Upstream commit 428805c0c5e76ef643b1fbc893edfb636b3d8aef ] get_gendisk grabs a reference on the disk and file operation, so this code will leak both of them while having absolutely no use for the gendisk itself. This effectively reverts commit 2df83fa4bce421f ("PM / Hibernate: Use get_gendisk to verify partition if resume_file is integer format") Signed-off-by: Christoph Hellwig <hch@xxxxxx> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/kernel/power/hibernate.c b/kernel/power/hibernate.c index 3124cebaec31e..7d73b30c55ccd 100644 --- a/kernel/power/hibernate.c +++ b/kernel/power/hibernate.c @@ -779,17 +779,6 @@ static int software_resume(void) /* Check if the device is there */ swsusp_resume_device = name_to_dev_t(resume_file); - - /* - * name_to_dev_t is ineffective to verify parition if resume_file is in - * integer format. (e.g. major:minor) - */ - if (isdigit(resume_file[0]) && resume_wait) { - int partno; - while (!get_gendisk(swsusp_resume_device, &partno)) - msleep(10); - } - if (!swsusp_resume_device) { /* * Some device discovery might still be in progress; we need