From 0f77b29ad14e34a89961f32edc87b92db623bb37 Mon Sep 17 00:00:00 2001 From: Yu Kuai Date: Fri, 17 Feb 2023 10:21:59 +0800 Subject: block: Revert "block: Do not reread partition table on exclusively open device" This reverts commit 36369f46e91785688a5f39d7a5590e3f07981316. This patch can't fix the problem in a corner case that device can be opened exclusively after the checking and before blkdev_get_by_dev(). We'll use a new solution to fix the problem in the next patch, and the new solution doesn't need to change apis. Signed-off-by: Yu Kuai Acked-by: Jan Kara Link: https://lore.kernel.org/r/20230217022200.3092987-2-yukuai1@huaweicloud.com Signed-off-by: Jens Axboe --- block/ioctl.c | 13 ++++++------- 1 file changed, 6 insertions(+), 7 deletions(-) (limited to 'block/ioctl.c') diff --git a/block/ioctl.c b/block/ioctl.c index 96617512982e..6dd49d877584 100644 --- a/block/ioctl.c +++ b/block/ioctl.c @@ -467,10 +467,10 @@ static int blkdev_bszset(struct block_device *bdev, fmode_t mode, * user space. Note the separate arg/argp parameters that are needed * to deal with the compat_ptr() conversion. */ -static int blkdev_common_ioctl(struct file *file, fmode_t mode, unsigned cmd, - unsigned long arg, void __user *argp) +static int blkdev_common_ioctl(struct block_device *bdev, fmode_t mode, + unsigned int cmd, unsigned long arg, + void __user *argp) { - struct block_device *bdev = I_BDEV(file->f_mapping->host); unsigned int max_sectors; switch (cmd) { @@ -528,8 +528,7 @@ static int blkdev_common_ioctl(struct file *file, fmode_t mode, unsigned cmd, return -EACCES; if (bdev_is_partition(bdev)) return -EINVAL; - return disk_scan_partitions(bdev->bd_disk, mode & ~FMODE_EXCL, - file); + return disk_scan_partitions(bdev->bd_disk, mode & ~FMODE_EXCL); case BLKTRACESTART: case BLKTRACESTOP: case BLKTRACETEARDOWN: @@ -607,7 +606,7 @@ long blkdev_ioctl(struct file *file, unsigned cmd, unsigned long arg) break; } - ret = blkdev_common_ioctl(file, mode, cmd, arg, argp); + ret = blkdev_common_ioctl(bdev, mode, cmd, arg, argp); if (ret != -ENOIOCTLCMD) return ret; @@ -676,7 +675,7 @@ long compat_blkdev_ioctl(struct file *file, unsigned cmd, unsigned long arg) break; } - ret = blkdev_common_ioctl(file, mode, cmd, arg, argp); + ret = blkdev_common_ioctl(bdev, mode, cmd, arg, argp); if (ret == -ENOIOCTLCMD && disk->fops->compat_ioctl) ret = disk->fops->compat_ioctl(bdev, mode, cmd, arg); -- cgit v1.2.3