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authorJan Kara <jack@suse.cz>2019-10-21 10:37:59 +0200
committerJens Axboe <axboe@kernel.dk>2019-11-03 07:53:49 -0700
commit731dc4868311ee097757b8746eaa1b4f8b2b4f1c (patch)
tree0d63e4ae0a1c2917e0ddb1363de26db7705018c9 /fs/block_dev.c
parent8962842ca5abdcf98e22ab3b2b45a103f0408b95 (diff)
downloadlinux-731dc4868311ee097757b8746eaa1b4f8b2b4f1c.tar.bz2
bdev: Factor out bdev revalidation into a common helper
Factor out code handling revalidation of bdev on disk change into a common helper. Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'fs/block_dev.c')
-rw-r--r--fs/block_dev.c26
1 files changed, 14 insertions, 12 deletions
diff --git a/fs/block_dev.c b/fs/block_dev.c
index 9c073dbdc1b0..88c6d35ec71d 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -1512,6 +1512,14 @@ EXPORT_SYMBOL(bd_set_size);
static void __blkdev_put(struct block_device *bdev, fmode_t mode, int for_part);
+static void bdev_disk_changed(struct block_device *bdev, bool invalidate)
+{
+ if (invalidate)
+ invalidate_partitions(bdev->bd_disk, bdev);
+ else
+ rescan_partitions(bdev->bd_disk, bdev);
+}
+
/*
* bd_mutex locking:
*
@@ -1594,12 +1602,9 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part)
* The latter is necessary to prevent ghost
* partitions on a removed medium.
*/
- if (bdev->bd_invalidated) {
- if (!ret)
- rescan_partitions(disk, bdev);
- else if (ret == -ENOMEDIUM)
- invalidate_partitions(disk, bdev);
- }
+ if (bdev->bd_invalidated &&
+ (!ret || ret == -ENOMEDIUM))
+ bdev_disk_changed(bdev, ret == -ENOMEDIUM);
if (ret)
goto out_clear;
@@ -1632,12 +1637,9 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part)
if (bdev->bd_disk->fops->open)
ret = bdev->bd_disk->fops->open(bdev, mode);
/* the same as first opener case, read comment there */
- if (bdev->bd_invalidated) {
- if (!ret)
- rescan_partitions(bdev->bd_disk, bdev);
- else if (ret == -ENOMEDIUM)
- invalidate_partitions(bdev->bd_disk, bdev);
- }
+ if (bdev->bd_invalidated &&
+ (!ret || ret == -ENOMEDIUM))
+ bdev_disk_changed(bdev, ret == -ENOMEDIUM);
if (ret)
goto out_unlock_bdev;
}