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authorTejun Heo <tj@kernel.org>2015-05-23 01:23:22 +0300
committerJens Axboe <axboe@fb.com>2015-06-02 17:38:12 +0300
commitdcc25ae76eb7b8ff883eaaab57e30e8f2f085be3 (patch)
tree7fb1d01278ad2b16a1c21ead3e567a3bb7d00c25 /fs/fs-writeback.c
parent380c27ca33ebecc9da35aa90c8b3a9154f90aac2 (diff)
downloadlinux-dcc25ae76eb7b8ff883eaaab57e30e8f2f085be3.tar.xz
writeback: move global_dirty_limit into wb_domain
This patch is a part of the series to define wb_domain which represents a domain that wb's (bdi_writeback's) belong to and are measured against each other in. This will enable IO backpressure propagation for cgroup writeback. global_dirty_limit exists to regulate the global dirty threshold which is a property of the wb_domain. This patch moves hard_dirty_limit, dirty_lock, and update_time into wb_domain. This is pure reorganization and doesn't introduce any behavioral changes. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Jens Axboe <axboe@kernel.dk> Cc: Jan Kara <jack@suse.cz> Cc: Wu Fengguang <fengguang.wu@intel.com> Cc: Greg Thelen <gthelen@google.com> Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'fs/fs-writeback.c')
-rw-r--r--fs/fs-writeback.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index cd89484486f6..51c8a5b14cdf 100644
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -887,7 +887,7 @@ static long writeback_chunk_size(struct bdi_writeback *wb,
pages = LONG_MAX;
else {
pages = min(wb->avg_write_bandwidth / 2,
- global_dirty_limit / DIRTY_SCOPE);
+ global_wb_domain.dirty_limit / DIRTY_SCOPE);
pages = min(pages, work->nr_pages);
pages = round_down(pages + MIN_WRITEBACK_PAGES,
MIN_WRITEBACK_PAGES);