From mboxrd@z Thu Jan 1 00:00:00 1970 From: Li Zefan Subject: [PATCH v2] Btrfs: reserve enough space for file clone Date: Fri, 29 Jul 2011 16:07:36 +0800 Message-ID: <4E326A48.107@cn.fujitsu.com> References: <4E32475E.2080404@cn.fujitsu.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 To: "linux-btrfs@vger.kernel.org" Return-path: In-Reply-To: <4E32475E.2080404@cn.fujitsu.com> List-ID: # mount -t btrfs /dev/sda7 /mnt # dd if=/dev/zero of=/mnt/src bs=10K count=1 # sync # clone 4K from /mnt/src to /mnt/dst kernel BUG at fs/btrfs/delayed-inode.c:1693! We should reserve space for both file extent item insertion and inode update. Signed-off-by: Li Zefan --- v2: - fix typo: s/reverse/reserve --- fs/btrfs/ioctl.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index 0b980af..05af14c 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -2314,7 +2314,7 @@ static noinline long btrfs_ioctl_clone(struct file *file, unsigned long srcfd, else new_key.offset = destoff; - trans = btrfs_start_transaction(root, 1); + trans = btrfs_start_transaction(root, 2); if (IS_ERR(trans)) { ret = PTR_ERR(trans); goto out; -- 1.7.3.1 --