Miao Xie 4a001071d3 Btrfs: fix loop device on top of btrfs
We cannot use the loop device which has been connected to a file in the btrf

The reproduce steps is following:
 # dd if=/dev/zero of=vdev0 bs=1M count=1024
 # losetup /dev/loop0 vdev0
 # mkfs.btrfs /dev/loop0
 ...
 failed to zero device start -5

The reason is that the btrfs don't implement either ->write_begin or ->write
the VFS API, so we fix it by setting ->write to do_sync_write().

Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2010-06-11 11:46:11 -04:00
..
2010-04-22 11:42:00 +02:00
2010-05-15 07:16:34 -04:00
2010-05-15 07:16:33 -04:00
2010-04-26 15:39:08 -04:00
2010-05-03 07:36:01 -07:00
2010-01-26 22:22:26 -05:00
2010-05-15 07:16:33 -04:00
2010-04-08 15:35:20 +02:00
2010-03-12 15:52:35 -08:00
2009-12-16 07:20:13 -08:00
2010-03-06 11:26:29 -08:00
2010-03-19 08:05:10 +01:00
2009-09-24 07:21:03 -07:00
2010-03-03 14:13:08 -05:00
2010-03-06 11:26:29 -08:00
2010-03-06 11:26:29 -08:00
2010-03-03 14:07:59 -05:00
2010-04-23 10:39:48 -07:00
2010-03-08 16:55:37 +01:00
2009-12-17 10:51:40 -05:00
2010-03-12 15:52:32 -08:00
2010-04-25 08:54:42 +02:00
2009-12-16 12:16:49 -05:00