diff options
| author | Jeff Mahoney <jeffm@suse.com> | 2018-03-20 20:25:25 +0100 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2018-03-31 01:41:12 +0200 |
| commit | dc2d3005d27da41247d6c42077e335a777afc79c (patch) | |
| tree | 87f3f93eeae85aa11b53f6e8d26652c27d4632e2 /fs/btrfs/extent-tree.c | |
| parent | Btrfs: replace: cache rbio when rebuild data on missing device (diff) | |
| download | linux-dc2d3005d27da41247d6c42077e335a777afc79c.tar.xz linux-dc2d3005d27da41247d6c42077e335a777afc79c.zip | |
btrfs: remove dead create_space_info calls
Since commit 2be12ef79 (btrfs: Separate space_info create/update), we've
separated out the creation and updating of the space info structures.
That commit was a straightforward refactoring of the two parts of
update_space_info, but we can go a step further. Since commits
c59021f84 (Btrfs: fix OOPS of empty filesystem after balance) and
b742bb82f (Btrfs: Link block groups of different raid types), we know
that the space_info structures will be created at mount and there will
only ever be, at most, three of them.
This patch cleans out the create_space_info calls after __find_space_info
returns NULL since __find_space_info *can't* return NULL.
The initial cause for reviewing this was the kobject_add calls from
create_space_info occuring in sites where fs-reclaim wasn't allowed. Now
we are certain they occur only early in the mount process and are safe.
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to '')
| -rw-r--r-- | fs/btrfs/extent-tree.c | 16 |
1 files changed, 2 insertions, 14 deletions
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index 1b54d9a9d938..e10f74dac493 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -4606,11 +4606,7 @@ static int do_chunk_alloc(struct btrfs_trans_handle *trans, return -ENOSPC; space_info = __find_space_info(fs_info, flags); - if (!space_info) { - ret = create_space_info(fs_info, flags, &space_info); - if (ret) - return ret; - } + ASSERT(space_info); again: spin_lock(&space_info->lock); @@ -10265,15 +10261,7 @@ int btrfs_make_block_group(struct btrfs_trans_handle *trans, * with its ->space_info set. */ cache->space_info = __find_space_info(fs_info, cache->flags); - if (!cache->space_info) { - ret = create_space_info(fs_info, cache->flags, - &cache->space_info); - if (ret) { - btrfs_remove_free_space_cache(cache); - btrfs_put_block_group(cache); - return ret; - } - } + ASSERT(cache->space_info); ret = btrfs_add_block_group_cache(fs_info, cache); if (ret) { |