[PATCH 4.14 45/95] btrfs: Split btrfs_del_delalloc_inode into 2 functions

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Nikolay Borisov <nbori...@suse.com>

commit 2b8773313494ede83a26fb372466e634564002ed upstream.

This is in preparation of fixing delalloc inodes leakage on transaction
abort. Also export the new function.

Signed-off-by: Nikolay Borisov <nbori...@suse.com>
Reviewed-by: David Sterba <dste...@suse.com>
Reviewed-by: Anand Jain <anand.j...@oracle.com>
Signed-off-by: David Sterba <dste...@suse.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>

---
 fs/btrfs/ctree.h |    2 ++
 fs/btrfs/inode.c |   13 ++++++++++---
 2 files changed, 12 insertions(+), 3 deletions(-)

--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -3150,6 +3150,8 @@ noinline int can_nocow_extent(struct ino
                              u64 *orig_start, u64 *orig_block_len,
                              u64 *ram_bytes);
 
+void __btrfs_del_delalloc_inode(struct btrfs_root *root,
+                               struct btrfs_inode *inode);
 struct inode *btrfs_lookup_dentry(struct inode *dir, struct dentry *dentry);
 int btrfs_set_inode_index(struct btrfs_inode *dir, u64 *index);
 int btrfs_unlink_inode(struct btrfs_trans_handle *trans,
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -1754,12 +1754,12 @@ static void btrfs_add_delalloc_inodes(st
        spin_unlock(&root->delalloc_lock);
 }
 
-static void btrfs_del_delalloc_inode(struct btrfs_root *root,
-                                    struct btrfs_inode *inode)
+
+void __btrfs_del_delalloc_inode(struct btrfs_root *root,
+                               struct btrfs_inode *inode)
 {
        struct btrfs_fs_info *fs_info = btrfs_sb(inode->vfs_inode.i_sb);
 
-       spin_lock(&root->delalloc_lock);
        if (!list_empty(&inode->delalloc_inodes)) {
                list_del_init(&inode->delalloc_inodes);
                clear_bit(BTRFS_INODE_IN_DELALLOC_LIST,
@@ -1772,6 +1772,13 @@ static void btrfs_del_delalloc_inode(str
                        spin_unlock(&fs_info->delalloc_root_lock);
                }
        }
+}
+
+static void btrfs_del_delalloc_inode(struct btrfs_root *root,
+                                    struct btrfs_inode *inode)
+{
+       spin_lock(&root->delalloc_lock);
+       __btrfs_del_delalloc_inode(root, inode);
        spin_unlock(&root->delalloc_lock);
 }