btrfs: make close_ctree return void

There's no user of the return value and we can get rid of the comment in
put_super.

Signed-off-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Chris Mason <clm@fb.com>

diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 354cc3f..ec32bea 100644 (file)
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -3623,7 +3623,7 @@ int btrfs_commit_super(struct btrfs_root *root)
        return btrfs_commit_transaction(trans, root);
 }
 
-int close_ctree(struct btrfs_root *root)
+void close_ctree(struct btrfs_root *root)
 {
        struct btrfs_fs_info *fs_info = root->fs_info;
        int ret;
@@ -3711,8 +3711,6 @@ int close_ctree(struct btrfs_root *root)
 
        btrfs_free_block_rsv(root, root->orphan_block_rsv);
        root->orphan_block_rsv = NULL;
-
-       return 0;
 }
 
 int btrfs_buffer_uptodate(struct extent_buffer *buf, u64 parent_transid,

diff --git a/fs/btrfs/disk-io.h b/fs/btrfs/disk-io.h
index 23ce3ce..52a17db 100644 (file)
--- a/fs/btrfs/disk-io.h
+++ b/fs/btrfs/disk-io.h
@@ -56,7 +56,7 @@ void clean_tree_block(struct btrfs_trans_handle *trans,
 int open_ctree(struct super_block *sb,
               struct btrfs_fs_devices *fs_devices,
               char *options);
-int close_ctree(struct btrfs_root *root);
+void close_ctree(struct btrfs_root *root);
 int write_ctree_super(struct btrfs_trans_handle *trans,
                      struct btrfs_root *root, int max_mirrors);
 struct buffer_head *btrfs_read_dev_super(struct block_device *bdev);

diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index c4124de..568ddc1 100644 (file)
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -307,13 +307,7 @@ void __btrfs_panic(struct btrfs_fs_info *fs_info, const char *function,
 
 static void btrfs_put_super(struct super_block *sb)
 {
-       (void)close_ctree(btrfs_sb(sb)->tree_root);
-       /* FIXME: need to fix VFS to return error? */
-       /* AV: return it _where_?  ->put_super() can be triggered by any number
-        * of async events, up to and including delivery of SIGKILL to the
-        * last process that kept it busy.  Or segfault in the aforementioned
-        * process...  Whom would you report that to?
-        */
+       close_ctree(btrfs_sb(sb)->tree_root);
 }
 
 enum {