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btrfs: qgroup: Add function qgroup_update_refcnt().
authorQu Wenruo <quwenruo@cn.fujitsu.com>
Sun, 12 Apr 2015 08:52:34 +0000 (16:52 +0800)
committerChris Mason <clm@fb.com>
Wed, 10 Jun 2015 16:25:24 +0000 (09:25 -0700)
commitd810ef2be5b8b15c9b6f88f9a09b1b4b16e30871
treefbcfdbe9d7fadc5abcc6dbcc173ca3568a11d681tree | snapshot (tar.gz zip)
parentc682f9b3c2e091f3211ca68585be39f2a2beb8d0commit | diff
btrfs: qgroup: Add function qgroup_update_refcnt().

This function is used to update refcnt for qgroups.
And is one of the two core functions used in the new qgroup implement.

This is based on the old update_old/new_refcnt, but provides a unified
logic and behavior.

Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: Chris Mason <clm@fb.com>
fs/btrfs/qgroup.c diff | blob | blame | history