From: Filipe Manana <fdmanana@suse.com>
Date: Thu, 31 Dec 2015 18:16:29 +0000 (+0000)
Subject: Btrfs: fix number of transaction units required to create symlink
X-Git-Tag: v4.1.22~170
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a1f535acffbd95ae6ae81656e8bba39af094c3f0;p=thirdparty%2Fkernel%2Fstable.git

Btrfs: fix number of transaction units required to create symlink

[ Upstream commit 9269d12b2d57d9e3d13036bb750762d1110d425c ]

We weren't accounting for the insertion of an inline extent item for the
symlink inode nor that we need to update the parent inode item (through
the call to btrfs_add_nondir()). So fix this by including two more
transaction units.

Signed-off-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
---

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 2e9ffa42b1cf2..62af0d3b0e4f7 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -9518,9 +9518,11 @@ static int btrfs_symlink(struct inode *dir, struct dentry *dentry,
 	/*
 	 * 2 items for inode item and ref
 	 * 2 items for dir items
+	 * 1 item for updating parent inode item
+	 * 1 item for the inline extent item
 	 * 1 item for xattr if selinux is on
 	 */
-	trans = btrfs_start_transaction(root, 5);
+	trans = btrfs_start_transaction(root, 7);
 	if (IS_ERR(trans))
 		return PTR_ERR(trans);