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| author | Qu Wenruo <quwenruo@cn.fujitsu.com> | 2015-10-13 09:53:10 +0800 |
|---|---|---|
| committer | Chris Mason <clm@fb.com> | 2015-10-21 18:41:10 -0700 |
| commit | 56fa9d0762ed17153c1bdff3c0aeeecbe522b504 (patch) | |
| tree | 8a71bc780898b0fd8a8504187dd78be09a3ff948 /fs/btrfs | |
| parent | 51773bec7ea352f3b9afa11ecfc72324c7977335 (diff) | |
| download | linux-56fa9d0762ed17153c1bdff3c0aeeecbe522b504.tar.gz linux-56fa9d0762ed17153c1bdff3c0aeeecbe522b504.tar.bz2 linux-56fa9d0762ed17153c1bdff3c0aeeecbe522b504.zip | |
btrfs: qgroup: Check if qgroup reserved space leaked
Add check at btrfs_destroy_inode() time to detect qgroup reserved space
leak.
Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: Chris Mason <clm@fb.com>
Diffstat (limited to 'fs/btrfs')
| -rw-r--r-- | fs/btrfs/inode.c | 1 | ||||
| -rw-r--r-- | fs/btrfs/qgroup.c | 32 | ||||
| -rw-r--r-- | fs/btrfs/qgroup.h | 1 |
3 files changed, 34 insertions, 0 deletions
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 3229c1346ea2..df6b93f6b393 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -9108,6 +9108,7 @@ void btrfs_destroy_inode(struct inode *inode) btrfs_put_ordered_extent(ordered); } } + btrfs_qgroup_check_reserved_leak(inode); inode_tree_del(inode); btrfs_drop_extent_cache(inode, 0, (u64)-1, 0); free: diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c index 879343c959d9..158633c9bbd9 100644 --- a/fs/btrfs/qgroup.c +++ b/fs/btrfs/qgroup.c @@ -2645,3 +2645,35 @@ void btrfs_qgroup_free_meta(struct btrfs_root *root, int num_bytes) atomic_sub(num_bytes, &root->qgroup_meta_rsv); qgroup_free(root, num_bytes); } + +/* + * Check qgroup reserved space leaking, normally at destory inode + * time + */ +void btrfs_qgroup_check_reserved_leak(struct inode *inode) +{ + struct extent_changeset changeset; + struct ulist_node *unode; + struct ulist_iterator iter; + int ret; + + changeset.bytes_changed = 0; + changeset.range_changed = ulist_alloc(GFP_NOFS); + if (WARN_ON(!changeset.range_changed)) + return; + + ret = clear_record_extent_bits(&BTRFS_I(inode)->io_tree, 0, (u64)-1, + EXTENT_QGROUP_RESERVED, GFP_NOFS, &changeset); + + WARN_ON(ret < 0); + if (WARN_ON(changeset.bytes_changed)) { + ULIST_ITER_INIT(&iter); + while ((unode = ulist_next(changeset.range_changed, &iter))) { + btrfs_warn(BTRFS_I(inode)->root->fs_info, + "leaking qgroup reserved space, ino: %lu, start: %llu, end: %llu", + inode->i_ino, unode->val, unode->aux); + } + qgroup_free(BTRFS_I(inode)->root, changeset.bytes_changed); + } + ulist_free(changeset.range_changed); +} diff --git a/fs/btrfs/qgroup.h b/fs/btrfs/qgroup.h index 686b60f60b61..ecb2c143ef75 100644 --- a/fs/btrfs/qgroup.h +++ b/fs/btrfs/qgroup.h @@ -105,4 +105,5 @@ int btrfs_qgroup_free_data(struct inode *inode, u64 start, u64 len); int btrfs_qgroup_reserve_meta(struct btrfs_root *root, int num_bytes); void btrfs_qgroup_free_meta_all(struct btrfs_root *root); void btrfs_qgroup_free_meta(struct btrfs_root *root, int num_bytes); +void btrfs_qgroup_check_reserved_leak(struct inode *inode); #endif /* __BTRFS_QGROUP__ */ |