diff options
author | Tejun Heo <tj@kernel.org> | 2015-05-22 17:13:41 -0400 |
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committer | Jens Axboe <axboe@fb.com> | 2015-06-02 08:33:35 -0600 |
commit | ec8a6f2643923ee5b74d24fa8d134240379f436b (patch) | |
tree | 4188866bc98fb571c3c872d0ad972c5ccc974ee4 /block/blk-core.c | |
parent | dfb8ae567835425d27db8acc6c9fc5db88d38e2b (diff) |
writeback: make congestion functions per bdi_writeback
Currently, all congestion functions take bdi (backing_dev_info) and
always operate on the root wb (bdi->wb) and the congestion state from
the block layer is propagated only for the root blkcg. This patch
introduces {set|clear}_wb_congested() and wb_congested() which take a
bdi_writeback_congested and bdi_writeback respectively. The bdi
counteparts are now wrappers invoking the wb based functions on
@bdi->wb.
While converting clear_bdi_congested() to clear_wb_congested(), the
local variable declaration order between @wqh and @bit is swapped for
cosmetic reason.
This patch just adds the new wb based functions. The following
patches will apply them.
v2: Updated for bdi_writeback_congested.
Signed-off-by: Tejun Heo <tj@kernel.org>
Reviewed-by: Jan Kara <jack@suse.cz>
Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'block/blk-core.c')
0 files changed, 0 insertions, 0 deletions