[PATCH v2 1/5] btrfs: remove unused drop_on_err in btrfs_mkdir()

[Johannes Thumshirn <jthumshirn@suse.de>]

Up to commit 32955c5422a8 (btrfs: switch to discard_new_inode()) the
drop_on_err variable in btrfs_mkdir() was used to check whether the inode had
to be dropped via iput().

After commit 32955c5422a8 (btrfs: switch to discard_new_inode())
discard_new_inode() is called when err is set and inode is non NULL. Therefore
drop_on_err is not used anymore and thus causes a warning when building with
-Wunused-but-set-variable.

Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Omar Sandoval <osandov@fb.com>
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: Qu Wenruo <wqu@suse.com>
---
 fs/btrfs/inode.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 2585200cb43a..9becf8543489 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -6645,7 +6645,6 @@ static int btrfs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
 	struct btrfs_trans_handle *trans;
 	struct btrfs_root *root = BTRFS_I(dir)->root;
 	int err = 0;
-	int drop_on_err = 0;
 	u64 objectid = 0;
 	u64 index = 0;
 
@@ -6671,7 +6670,6 @@ static int btrfs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
 		goto out_fail;
 	}
 
-	drop_on_err = 1;
 	/* these must be set before we unlock the inode */
 	inode->i_op = &btrfs_dir_inode_operations;
 	inode->i_fop = &btrfs_dir_file_operations;
@@ -6692,7 +6690,6 @@ static int btrfs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
 		goto out_fail;
 
 	d_instantiate_new(dentry, inode);
-	drop_on_err = 0;
 
 out_fail:
 	btrfs_end_transaction(trans);
-- 
2.16.4