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| author | Jens Axboe <jens.axboe@oracle.com> | 2009-09-02 09:19:46 +0200 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2009-09-11 09:20:25 +0200 |
| commit | 66f3b8e2e103a0b93b945764d98e9ba46cb926dd (patch) | |
| tree | 442bf5664214f0a1448e4010b09868cc58fdd3d1 /include/linux/backing-dev.h | |
| parent | d8a8559cd7a9ccac98d5f6f13297a2ff68a43627 (diff) | |
| download | op-kernel-dev-66f3b8e2e103a0b93b945764d98e9ba46cb926dd.zip op-kernel-dev-66f3b8e2e103a0b93b945764d98e9ba46cb926dd.tar.gz | |
writeback: move dirty inodes from super_block to backing_dev_info
This is a first step at introducing per-bdi flusher threads. We should
have no change in behaviour, although sb_has_dirty_inodes() is now
ridiculously expensive, as there's no easy way to answer that question.
Not a huge problem, since it'll be deleted in subsequent patches.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'include/linux/backing-dev.h')
| -rw-r--r-- | include/linux/backing-dev.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/linux/backing-dev.h b/include/linux/backing-dev.h index 1d52425..928cd54 100644 --- a/include/linux/backing-dev.h +++ b/include/linux/backing-dev.h @@ -40,6 +40,8 @@ enum bdi_stat_item { #define BDI_STAT_BATCH (8*(1+ilog2(nr_cpu_ids))) struct backing_dev_info { + struct list_head bdi_list; + unsigned long ra_pages; /* max readahead in PAGE_CACHE_SIZE units */ unsigned long state; /* Always use atomic bitops on this */ unsigned int capabilities; /* Device capabilities */ @@ -58,6 +60,10 @@ struct backing_dev_info { struct device *dev; + struct list_head b_dirty; /* dirty inodes */ + struct list_head b_io; /* parked for writeback */ + struct list_head b_more_io; /* parked for more writeback */ + #ifdef CONFIG_DEBUG_FS struct dentry *debug_dir; struct dentry *debug_stats; @@ -72,6 +78,9 @@ int bdi_register(struct backing_dev_info *bdi, struct device *parent, int bdi_register_dev(struct backing_dev_info *bdi, dev_t dev); void bdi_unregister(struct backing_dev_info *bdi); +extern struct mutex bdi_lock; +extern struct list_head bdi_list; + static inline void __add_bdi_stat(struct backing_dev_info *bdi, enum bdi_stat_item item, s64 amount) { |
