diff options
| author | Christoph Hellwig <hch@lst.de> | 2023-08-11 13:08:26 +0300 |
|---|---|---|
| committer | Christian Brauner <brauner@kernel.org> | 2023-08-21 15:35:32 +0300 |
| commit | 2142b88c37a3e49fbca4a36b8674626917d9bf40 (patch) | |
| tree | 29c2476d72b5c8fe1a6b8040bba770d81c3d9b71 /block | |
| parent | d8530de5a6e82be0ce17a5fdf727a394bcf6444c (diff) | |
| download | linux-2142b88c37a3e49fbca4a36b8674626917d9bf40.tar.xz | |
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')
| -rw-r--r-- | block/bdev.c | 16 | ||||
| -rw-r--r-- | block/ioctl.c | 9 |
2 files changed, 8 insertions, 17 deletions
diff --git a/block/bdev.c b/block/bdev.c index 4d580083a114..a20263fa27a4 100644 --- a/block/bdev.c +++ b/block/bdev.c @@ -206,22 +206,6 @@ int sync_blockdev_range(struct block_device *bdev, loff_t lstart, loff_t lend) } EXPORT_SYMBOL(sync_blockdev_range); -/* - * Write out and wait upon all dirty data associated with this - * device. Filesystem data as well as the underlying block - * device. Takes the superblock lock. - */ -int fsync_bdev(struct block_device *bdev) -{ - struct super_block *sb = get_super(bdev); - if (sb) { - int res = sync_filesystem(sb); - drop_super(sb); - return res; - } - return sync_blockdev(bdev); -} - /** * freeze_bdev - lock a filesystem and force it into a consistent state * @bdev: blockdevice to lock 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; } |