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author | Tejun Heo <tj@kernel.org> | 2015-05-22 21:13:46 (GMT) |
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committer | Jens Axboe <axboe@fb.com> | 2015-06-02 14:33:35 (GMT) |
commit | 766a9d6e60578f1ef6de71f89f022084f8bffc82 (patch) | |
tree | c14261a70cdc790ffca5e82fa006fa8adf663319 /mm/kasan | |
parent | d6c10f1fc8626dc55946f4768ae322b4c57b07dd (diff) | |
download | linux-766a9d6e60578f1ef6de71f89f022084f8bffc82.tar.xz |
writeback: implement backing_dev_info->tot_write_bandwidth
cgroup writeback support needs to keep track of the sum of
avg_write_bandwidth of all wb's (bdi_writeback's) with dirty inodes to
distribute write workload. This patch adds bdi->tot_write_bandwidth
and updates inode_wb_list_move_locked(), inode_wb_list_del_locked()
and wb_update_write_bandwidth() to adjust it as wb's gain and lose
dirty inodes and its avg_write_bandwidth gets updated.
As the update events are not synchronized with each other,
bdi->tot_write_bandwidth is an atomic_long_t.
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Jan Kara <jack@suse.cz>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'mm/kasan')
0 files changed, 0 insertions, 0 deletions