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| author | Jens Axboe <jens.axboe@oracle.com> | 2009-06-25 09:35:01 +0200 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2009-06-25 12:36:33 +0200 |
| commit | 3336a136d7ae49d91f4da35250feffb886f85344 (patch) | |
| tree | 3829c54f9fd654f932904170d8d54c521466e051 /include | |
| parent | f5a0e4626031b61e1ebb20b2d6c643788847aa3b (diff) | |
writeback: allow sleepy exit of default writeback task
Since we do lazy create of default writeback tasks for a bdi, we can
allow sleepy exit if it has been completely idle for 5 minutes.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/backing-dev.h | 5 | ||||
| -rw-r--r-- | include/linux/writeback.h | 2 |
2 files changed, 6 insertions, 1 deletions
diff --git a/include/linux/backing-dev.h b/include/linux/backing-dev.h index 210207cd1246..7256f736e570 100644 --- a/include/linux/backing-dev.h +++ b/include/linux/backing-dev.h @@ -110,6 +110,11 @@ int bdi_has_dirty_io(struct backing_dev_info *bdi); extern spinlock_t bdi_lock; extern struct list_head bdi_list; +static inline int wb_is_default_task(struct bdi_writeback *wb) +{ + return wb == &wb->bdi->wb; +} + static inline int bdi_wblist_needs_lock(struct backing_dev_info *bdi) { return test_bit(BDI_wblist_lock, &bdi->state); diff --git a/include/linux/writeback.h b/include/linux/writeback.h index 588a44972bad..e070b91905d6 100644 --- a/include/linux/writeback.h +++ b/include/linux/writeback.h @@ -68,7 +68,7 @@ struct writeback_control { void writeback_inodes(struct writeback_control *wbc); int inode_wait(void *); void sync_inodes_sb(struct super_block *, int wait); -void wb_do_writeback(struct bdi_writeback *wb, int force_wait); +long wb_do_writeback(struct bdi_writeback *wb, int force_wait); /* writeback.h requires fs.h; it, too, is not included from here. */ static inline void wait_on_inode(struct inode *inode) |