wireguard-linux/fs/btrfs/super.c, branch jd/unified-crypt-queue

btrfs: adjust message level for unrecognized mount option

2020-03-23T16:01:45Z

An unrecognized option is a failure that should get user/administrator attention, the info level is often below what gets logged, so make it error. Reviewed-by: Johannes Thumshirn Signed-off-by: David Sterba

btrfs: export helpers for subvolume name/id resolution

2020-03-23T16:01:42Z

The functions will be used outside of export.c and super.c to allow resolving subvolume name from a given id, eg. for subvolume deletion by id ioctl. Signed-off-by: Marcos Paulo de Souza Reviewed-by: David Sterba [ split from the next patch ] Signed-off-by: David Sterba

btrfs: add wrapper for transaction abort predicate

2020-03-23T16:01:34Z

The status of aborted transaction can change between calls and it needs to be accessed by READ_ONCE. Add a helper that also wraps the unlikely hint. Reviewed-by: Josef Bacik Signed-off-by: David Sterba

btrfs: rename btrfs_put_fs_root and btrfs_grab_fs_root

2020-03-23T16:01:33Z

We are now using these for all roots, rename them to btrfs_put_root() and btrfs_grab_root(); Reviewed-by: Nikolay Borisov Signed-off-by: Josef Bacik Reviewed-by: David Sterba Signed-off-by: David Sterba

btrfs: make the init of static elements in fs_info separate

2020-03-23T16:01:33Z

In adding things like eb leak checking and root leak checking there were a lot of weird corner cases that come from the fact that 1) We do not init the fs_info until we get to open_ctree time in the normal case and 2) The test infrastructure half-init's the fs_info for things that it needs. This makes it really annoying to make changes because you have to add init in two different places, have special cases for testing fs_info's that may not have certain things initialized, and cases for fs_info's that didn't make it to open_ctree and thus are not fully set up. Fix this by extracting out the non-allocating init of the fs info into it's own public function and use that to make sure we're all getting consistent views of an allocated fs_info. Signed-off-by: Josef Bacik Reviewed-by: David Sterba Signed-off-by: David Sterba

btrfs: push btrfs_grab_fs_root into btrfs_get_fs_root

2020-03-23T16:01:32Z

Now that all callers of btrfs_get_fs_root are subsequently calling btrfs_grab_fs_root and handling dropping the ref when they are done appropriately, go ahead and push btrfs_grab_fs_root up into btrfs_get_fs_root. Signed-off-by: Josef Bacik Reviewed-by: David Sterba Signed-off-by: David Sterba

btrfs: export and rename free_fs_info

2020-03-23T16:01:32Z

We're going to start freeing roots and doing other complicated things in free_fs_info, so we need to move it to disk-io.c and export it in order to use things lik btrfs_put_fs_root(). Reviewed-by: Nikolay Borisov Signed-off-by: Josef Bacik Reviewed-by: David Sterba Signed-off-by: David Sterba

btrfs: hold a ref on the root in get_subvol_name_from_objectid

2020-03-23T16:01:31Z

We lookup the name of a subvol which means we'll cross into different roots. Hold a ref while we're doing the look ups in the fs_root we're searching. Signed-off-by: Josef Bacik Reviewed-by: David Sterba Signed-off-by: David Sterba

btrfs: open code btrfs_read_fs_root_no_name

2020-03-23T16:01:26Z

All this does is call btrfs_get_fs_root() with check_ref == true. Just use btrfs_get_fs_root() so we don't have a bunch of different helpers that do the same thing. Reviewed-by: Nikolay Borisov Signed-off-by: Josef Bacik Reviewed-by: David Sterba Signed-off-by: David Sterba

btrfs: update the comment of btrfs_control_ioctl()

2020-03-23T16:01:23Z

Btrfsctl was removed in 2012, now the function btrfs_control_ioctl() is only used for devices ioctls. So update the comment. Reviewed-by: Nikolay Borisov Signed-off-by: Su Yue Reviewed-by: David Sterba Signed-off-by: David Sterba