diff options
Diffstat (limited to 'fs/btrfs/relocation.c')
| -rw-r--r-- | fs/btrfs/relocation.c | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c index a3f75b8926d4..5471eea1c0fd 100644 --- a/fs/btrfs/relocation.c +++ b/fs/btrfs/relocation.c @@ -4223,6 +4223,7 @@ static void describe_relocation(struct btrfs_fs_info *fs_info, */ int btrfs_relocate_block_group(struct btrfs_fs_info *fs_info, u64 group_start) { + struct btrfs_block_group_cache *bg; struct btrfs_root *extent_root = fs_info->extent_root; struct reloc_control *rc; struct inode *inode; @@ -4231,14 +4232,23 @@ int btrfs_relocate_block_group(struct btrfs_fs_info *fs_info, u64 group_start) int rw = 0; int err = 0; + bg = btrfs_lookup_block_group(fs_info, group_start); + if (!bg) + return -ENOENT; + + if (btrfs_pinned_by_swapfile(fs_info, bg)) { + btrfs_put_block_group(bg); + return -ETXTBSY; + } + rc = alloc_reloc_control(); - if (!rc) + if (!rc) { + btrfs_put_block_group(bg); return -ENOMEM; + } rc->extent_root = extent_root; - - rc->block_group = btrfs_lookup_block_group(fs_info, group_start); - BUG_ON(!rc->block_group); + rc->block_group = bg; ret = btrfs_inc_block_group_ro(rc->block_group); if (ret) { |