btrfs: use correct offset for reloc_inode in prealloc_file_extent_cluster()

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In prealloc_file_extent_cluster(), btrfs_check_data_free_space() uses
wrong file offset for reloc_inode, it uses cluster->start and cluster->end,
which indeed are extent's bytenr. The correct value should be
cluster->[start|end] minus block group's start bytenr.

start bytenr   cluster->start
|              |     extent      |   extent   | ...| extent |
|----------------------------------------------------------------|
|                block group reloc_inode                         |

Signed-off-by: Wang Xiaoguang <wangxg.fnst@cn.fujitsu.com>
Reviewed-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Chris Mason <clm@fb.com>

...

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Wang Xiaoguang 2016-07-25 15:51:38 +08:00 • committed by Chris Mason

parent df2c95f33e

commit dcb40c196f

1 changed files with 6 additions and 4 deletions

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fs/btrfs/relocation.c

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