diff options
| author | Andrew Morton <akpm@digeo.com> | 2002-09-15 08:50:24 -0700 |
|---|---|---|
| committer | Christoph Hellwig <hch@hera.kernel.org> | 2002-09-15 08:50:24 -0700 |
| commit | fca174ccac67746acd88af0ce8f9f4178ea303b2 (patch) | |
| tree | 71ba72c4326113e3fc1b22131353badc2e0dfff4 /include/linux/blkdev.h | |
| parent | e572ef2ea320724ba32094c4b4817dfde4a4bef3 (diff) | |
[PATCH] resurrect /proc/meminfo:Buffers
The /proc/meminfo:Buffers statistic is quite useful - it tells us
how effective we are being at caching filesystem metadata.
For example, increases in this figure are a measure of success of the
slablru and buffer_head-limitation patches.
The patch resurrects buffermem accounting. The metric is calculated
on-demand, via a walk of the blockdev hashtable.
Diffstat (limited to 'include/linux/blkdev.h')
| -rw-r--r-- | include/linux/blkdev.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 7ef082f9462f..70781c985caa 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -327,7 +327,7 @@ extern struct backing_dev_info *blk_get_backing_dev_info(struct block_device *bd extern int blk_rq_map_sg(request_queue_t *, struct request *, struct scatterlist *); extern void blk_dump_rq_flags(struct request *, char *); extern void generic_unplug_device(void *); - +extern long nr_blockdev_pages(void); /* * tag stuff |