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-Url: http://git.hungrycats.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2921d73bd3bf65afb19e8e423ad80586717c63da;p=linux

Btrfs: fix number of transaction units required to create symlink

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>
(cherry picked from commit 9269d12b2d57d9e3d13036bb750762d1110d425c)
(cherry picked from commit 668584fd5d1cfb883a4d1b4f1902612e9d12bab1)
---

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 34199c1d64cc..645c5749b7ec 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -9527,9 +9527,11 @@ 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);