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btrfs: qgroup: Introduce helpers to update and access new qgroup rsv
authorQu Wenruo <wqu@suse.com>
Tue, 12 Dec 2017 07:34:24 +0000 (15:34 +0800)
committerDavid Sterba <dsterba@suse.com>
Fri, 30 Mar 2018 23:41:13 +0000 (01:41 +0200)
commitf9368049d8ed058581c5d0f4d2c703bec5f75561
tree526802d8f61876cde2d2ebe69e34e6fef633bda6tree | snapshot
parent63ef0a5050b839b3951e36a04d940531533c0baccommit | diff
btrfs: qgroup: Introduce helpers to update and access new qgroup rsv

Introduce helpers to:

1) Get total reserved space
   For limit calculation
2) Add/release reserved space for given type
   With underflow detection and warning
3) Add/release reserved space according to child qgroup

Signed-off-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
fs/btrfs/qgroup.c diff | blob | history
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