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btrfs: qgroup: inherit limit info from srcgroup in creating snapshot. 

Currently, when we snapshot a subvol, snapshot will not copy the limits
from srcqgroup.

This patch make the qgroup in snapshot inherit the limit info when create
a snapshot.

Signed-off-by: Dongsheng Yang <yangds.fnst@cn.fujitsu.com>
Signed-off-by: Chris Mason <clm@fb.com>
This commit is contained in:
Dongsheng Yang 2014-11-20 20:14:38 -05:00 committed by Chris Mason
parent c99f1b0c6c
commit 3eeb4d597e
1 changed files with 8 additions and 0 deletions
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8
fs/btrfs/qgroup.c
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@ -2302,6 +2302,14 @@ int btrfs_qgroup_inherit(struct btrfs_trans_handle *trans,
dstgroup->excl_cmpr = level_size; dstgroup->excl_cmpr = level_size;
srcgroup->excl = level_size; srcgroup->excl = level_size;
srcgroup->excl_cmpr = level_size; srcgroup->excl_cmpr = level_size;
/* inherit the limit info */
dstgroup->lim_flags = srcgroup->lim_flags;
dstgroup->max_rfer = srcgroup->max_rfer;
dstgroup->max_excl = srcgroup->max_excl;
dstgroup->rsv_rfer = srcgroup->rsv_rfer;
dstgroup->rsv_excl = srcgroup->rsv_excl;
qgroup_dirty(fs_info, dstgroup); qgroup_dirty(fs_info, dstgroup);
qgroup_dirty(fs_info, srcgroup); qgroup_dirty(fs_info, srcgroup);
} }