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| author | Kent Overstreet <kmo@daterainc.com> | 2013-09-11 06:07:00 +0400 |
|---|---|---|
| committer | Kent Overstreet <kmo@daterainc.com> | 2013-11-11 09:56:37 +0400 |
| commit | a1f0358b2bf69be216cb6e4ea40fe7ae4d38b8a6 (patch) | |
| tree | 287cf5c3daa6ae4ec2ffc55b33b6df52c617f7f7 /drivers/md/bcache/sysfs.c | |
| parent | 8835c1234dd9a838993a2d5cb7572f57992ebbee (diff) | |
| download | linux-a1f0358b2bf69be216cb6e4ea40fe7ae4d38b8a6.tar.xz | |
bcache: Incremental gc
Big garbage collection rewrite; now, garbage collection uses the same
mechanisms as used elsewhere for inserting/updating btree node pointers,
instead of rewriting interior btree nodes in place.
This makes the code significantly cleaner and less fragile, and means we
can now make garbage collection incremental - it doesn't have to hold a
write lock on the root of the btree for the entire duration of garbage
collection.
This means that there's less of a latency hit for doing garbage
collection, which means we can gc more frequently (and do a better job
of reclaiming from the cache), and we can coalesce across more btree
nodes (improving our space efficiency).
Signed-off-by: Kent Overstreet <kmo@daterainc.com>
Diffstat (limited to 'drivers/md/bcache/sysfs.c')
| -rw-r--r-- | drivers/md/bcache/sysfs.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/drivers/md/bcache/sysfs.c b/drivers/md/bcache/sysfs.c index 9687771ec6f3..c5f73e34d016 100644 --- a/drivers/md/bcache/sysfs.c +++ b/drivers/md/bcache/sysfs.c @@ -489,7 +489,6 @@ lock_root: sysfs_print(btree_used_percent, btree_used(c)); sysfs_print(btree_nodes, c->gc_stats.nodes); - sysfs_hprint(dirty_data, c->gc_stats.dirty); sysfs_hprint(average_key_size, average_key_size(c)); sysfs_print(cache_read_races, @@ -642,7 +641,6 @@ static struct attribute *bch_cache_set_files[] = { &sysfs_cache_available_percent, &sysfs_average_key_size, - &sysfs_dirty_data, &sysfs_errors, &sysfs_io_error_limit, |