Merge git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable

* git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable:
  Btrfs: fix balancing oops when invalidate_inode_pages2 returns EBUSY
  Btrfs: correct error-handling zlib error handling
  Btrfs: remove superfluous NULL pointer check in btrfs_rename()
  Btrfs: make sure the async caching thread advances the key
  Btrfs: fix btrfs_remove_from_free_space corner case

1 files changed, 3 insertions, 3 deletions

diff --git a/fs/btrfs/zlib.c b/fs/btrfs/zlib.c
index ecfbce836d32..3e2b90eaa239 100644
--- a/fs/btrfs/zlib.c
+++ b/fs/btrfs/zlib.c
@@ -208,7 +208,7 @@ int btrfs_zlib_compress_pages(struct address_space *mapping,
         *total_in = 0;
 
         workspace = find_zlib_workspace();
-        if (!workspace)
+        if (IS_ERR(workspace))
                 return -1;
 
         if (Z_OK != zlib_deflateInit(&workspace->def_strm, 3)) {
@@ -366,7 +366,7 @@ int btrfs_zlib_decompress_biovec(struct page **pages_in,
         char *kaddr;
 
         workspace = find_zlib_workspace();
-        if (!workspace)
+        if (IS_ERR(workspace))
                 return -ENOMEM;
 
         data_in = kmap(pages_in[page_in_index]);
@@ -547,7 +547,7 @@ int btrfs_zlib_decompress(unsigned char *data_in,
                 return -ENOMEM;
 
         workspace = find_zlib_workspace();
-        if (!workspace)
+        if (IS_ERR(workspace))
                 return -ENOMEM;
 
         workspace->inf_strm.next_in = data_in;