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authorChristoph Hellwig2023-08-11 12:08:26 +0200
committerChristian Brauner2023-08-21 14:35:32 +0200
commit2142b88c37a3e49fbca4a36b8674626917d9bf40 (patch)
tree29c2476d72b5c8fe1a6b8040bba770d81c3d9b71 /block/ioctl.c
parentd8530de5a6e82be0ce17a5fdf727a394bcf6444c (diff)
block: call into the file system for ioctl BLKFLSBUF
BLKFLSBUF is a historic ioctl that is called on a file handle to a block device and syncs either the file system mounted on that block device if there is one, or otherwise the just the data on the block device. Replace the get_super based syncing with a holder operation to remove the last usage of get_super, and to also support syncing the file system if the block device is not the main block device stored in s_dev. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Josef Bacik <josef@toxicpanda.com> Message-Id: <20230811100828.1897174-16-hch@lst.de> Signed-off-by: Christian Brauner <brauner@kernel.org>
Diffstat (limited to 'block/ioctl.c')
-rw-r--r--block/ioctl.c9
1 files changed, 8 insertions, 1 deletions
diff --git a/block/ioctl.c b/block/ioctl.c
index 3be11941fb2d..648670ddb164 100644
--- a/block/ioctl.c
+++ b/block/ioctl.c
@@ -364,7 +364,14 @@ static int blkdev_flushbuf(struct block_device *bdev, unsigned cmd,
{
if (!capable(CAP_SYS_ADMIN))
return -EACCES;
- fsync_bdev(bdev);
+
+ mutex_lock(&bdev->bd_holder_lock);
+ if (bdev->bd_holder_ops && bdev->bd_holder_ops->sync)
+ bdev->bd_holder_ops->sync(bdev);
+ else
+ sync_blockdev(bdev);
+ mutex_unlock(&bdev->bd_holder_lock);
+
invalidate_bdev(bdev);
return 0;
}