apfs/linux-apfs
0
0
Fork 0
mirror of https://github.com/linux-apfs/linux-apfs.git synced 2026-05-01 15:00:59 -07:00
Code Issues Packages Projects Releases Wiki Activity

dm cache: wake the worker thread every time we free a migration object

Browse Source 
When the cache is idle, writeback work was only being issued every
second.  With this change outstanding writebacks are streamed
constantly.  This offers a writeback performance improvement.

Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
This commit is contained in:
Joe Thornber
2015-05-27 15:39:45 +01:00
committed by Mike Snitzer
parent 66a6363566
commit 88bf5184fa
1 changed files with 6 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/md/dm-cache-target.c
+6 -3
View File
@@ -418,10 +418,13 @@ static struct dm_cache_migration *alloc_migration(struct cache *cache)
static void free_migration(struct dm_cache_migration *mg) static void free_migration(struct dm_cache_migration *mg)
{ {
if (atomic_dec_and_test(&mg->cache->nr_allocated_migrations)) struct cache *cache = mg->cache;
wake_up(&mg->cache->migration_wait);
mempool_free(mg, mg->cache->migration_pool); if (atomic_dec_and_test(&cache->nr_allocated_migrations))
wake_up(&cache->migration_wait);
mempool_free(mg, cache->migration_pool);
wake_worker(cache);
} }
static int prealloc_data_structs(struct cache *cache, struct prealloc *p) static int prealloc_data_structs(struct cache *cache, struct prealloc *p)