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| author |   Tejun Heo <tj@kernel.org> | 2015-05-22 17:13:53 -0400 |
|---|---|---|
| committer |   Jens Axboe <axboe@fb.com> | 2015-06-02 08:33:36 -0600 |
| commit | bc05873dccd27d75d6acdf812c3edfb181f1ba17 (patch) | |
| tree | e281a65c0688c6d4987ea621263dc69d99d51bd2 /include/linux/backing-dev.h | |
| parent | writeback: make laptop_mode_timer_fn() handle multiple bdi_writeback's (diff) | |
| download | linux-dev-bc05873dccd27d75d6acdf812c3edfb181f1ba17.tar.xz linux-dev-bc05873dccd27d75d6acdf812c3edfb181f1ba17.zip | |
writeback: make writeback_in_progress() take bdi_writeback instead of backing_dev_info
writeback_in_progress() currently takes @bdi and returns whether
writeback is in progress on its root wb (bdi_writeback). In
preparation for cgroup writeback support, make it take wb instead.
While at it, make it an inline function.
This patch doesn't make any functional difference.
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 'include/linux/backing-dev.h')
| -rw-r--r-- | include/linux/backing-dev.h | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/include/linux/backing-dev.h b/include/linux/backing-dev.h index 0ff40c228bee..f04956c900ec 100644 --- a/include/linux/backing-dev.h +++ b/include/linux/backing-dev.h @@ -156,7 +156,17 @@ int bdi_set_max_ratio(struct backing_dev_info *bdi, unsigned int max_ratio); extern struct backing_dev_info noop_backing_dev_info; -int writeback_in_progress(struct backing_dev_info *bdi); +/** + * writeback_in_progress - determine whether there is writeback in progress + * @wb: bdi_writeback of interest + * + * Determine whether there is writeback waiting to be handled against a + * bdi_writeback. + */ +static inline bool writeback_in_progress(struct bdi_writeback *wb) +{ + return test_bit(WB_writeback_running, &wb->state); +} static inline struct backing_dev_info *inode_to_bdi(struct inode *inode) { |