Miao Xie edd1400be9 Btrfs: fix several potential problems in copy_nocow_pages_for_inode ...

- It makes no sense that we deal with a inode in the dead tree.
- fix the race between dio and page copy by waiting the dio completion
- avoid the page copy vs truncate/punch hole
- check if the page is in the page cache or not

Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>

2013-07-02 11:50:58 -04:00

90 KiB

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