tree 984505e8c99a6965453819651ff0ea91a4ca8d4b
parent db804f23a72bada58f083dfad6a65d019ddb3bd4
author Li Zefan <lizf@cn.fujitsu.com> 1326090462 +0800
committer Li Zefan <lizf@cn.fujitsu.com> 1326248794 +0800

Btrfs: avoid possible NULL deref in io_ctl_drop_pages()

If we run into some failure path in io_ctl_prepare_pages(),
io_ctl->pages[] array may have some NULL pointers.

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>