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mm: bdi: move statistics to debugfs

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Move BDI statistics to debugfs:

   /sys/kernel/debug/bdi/<bdi>/stats

Use postcore_initcall() to initialize the sysfs class and debugfs,
because debugfs is initialized in core_initcall().

Update descriptions in ABI documentation.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Miklos Szeredi 2008-04-30 00:54:36 -07:00 • committed by Linus Torvalds
parent a42dde0415
commit 76f1418b48
3 changed files with 99 additions and 48 deletions
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6
include/linux/backing-dev.h
View file

@ -16,6 +16,7 @@
struct page;
struct device;
struct dentry;
/*
* Bits in backing_dev_info.state
@ -55,6 +56,11 @@ struct backing_dev_info {
unsigned int max_ratio, max_prop_frac;
struct device *dev;
#ifdef CONFIG_DEBUG_FS
struct dentry *debug_dir;
struct dentry *debug_stats;
#endif
};
int bdi_init(struct backing_dev_info *bdi);