btrfs: qgroup: Switch to new extent-oriented qgroup mechanism.

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Switch from old ref_node based qgroup to extent based qgroup mechanism
for normal operations.

The new mechanism should hugely reduce the overhead of btrfs quota
system, and further more, the codes and logic should be more clean and
easier to maintain.

Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: Chris Mason <clm@fb.com>

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Qu Wenruo 2015-04-16 16:55:08 +08:00 • committed by Chris Mason

parent 9d220c95f5

commit 0ed4792af0

2 changed files with 28 additions and 100 deletions

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110

fs/btrfs/extent-tree.c

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18

fs/btrfs/transaction.c

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