Btrfs: Use btrfs_update_inode_fallback when creating a snapshot

On a really full file system I was getting ENOSPC back from
btrfs_update_inode when trying to update the parent inode when creating a
snapshot.  Just use the fallback method so we can update the inode and not
have to worry about having a delayed ref.  Thanks,

Signed-off-by: Josef Bacik <jbacik@fusionio.com>

diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 1630be8..8a92ab1 100644 (file)
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -3338,6 +3338,8 @@ struct extent_map *btrfs_get_extent(struct inode *inode, struct page *page,
 int btrfs_update_inode(struct btrfs_trans_handle *trans,
                              struct btrfs_root *root,
                              struct inode *inode);
+int btrfs_update_inode_fallback(struct btrfs_trans_handle *trans,
+                               struct btrfs_root *root, struct inode *inode);
 int btrfs_orphan_add(struct btrfs_trans_handle *trans, struct inode *inode);
 int btrfs_orphan_del(struct btrfs_trans_handle *trans, struct inode *inode);
 int btrfs_orphan_cleanup(struct btrfs_root *root);

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index f92def2..5fc0990 100644 (file)
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -94,8 +94,6 @@ static noinline int cow_file_range(struct inode *inode,
                                   struct page *locked_page,
                                   u64 start, u64 end, int *page_started,
                                   unsigned long *nr_written, int unlock);
-static noinline int btrfs_update_inode_fallback(struct btrfs_trans_handle *trans,
-                               struct btrfs_root *root, struct inode *inode);
 
 static int btrfs_init_inode_security(struct btrfs_trans_handle *trans,
                                     struct inode *inode,  struct inode *dir,
@@ -2746,8 +2744,9 @@ noinline int btrfs_update_inode(struct btrfs_trans_handle *trans,
        return btrfs_update_inode_item(trans, root, inode);
 }
 
-static noinline int btrfs_update_inode_fallback(struct btrfs_trans_handle *trans,
-                               struct btrfs_root *root, struct inode *inode)
+noinline int btrfs_update_inode_fallback(struct btrfs_trans_handle *trans,
+                                        struct btrfs_root *root,
+                                        struct inode *inode)
 {
        int ret;
 

diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
index 77db875..04bbfb1 100644 (file)
--- a/fs/btrfs/transaction.c
+++ b/fs/btrfs/transaction.c
@@ -1200,7 +1200,7 @@ static noinline int create_pending_snapshot(struct btrfs_trans_handle *trans,
        btrfs_i_size_write(parent_inode, parent_inode->i_size +
                                         dentry->d_name.len * 2);
        parent_inode->i_mtime = parent_inode->i_ctime = CURRENT_TIME;
-       ret = btrfs_update_inode(trans, parent_root, parent_inode);
+       ret = btrfs_update_inode_fallback(trans, parent_root, parent_inode);
        if (ret)
                btrfs_abort_transaction(trans, root, ret);
 fail: