Btrfs: use a slab for the free space entries
Since we alloc/free free space entries a whole lot, lets use a slab to keep
track of them. This makes some of my tests slightly faster. Thanks,
Signed-off-by: Josef Bacik <josef@redhat.com>
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index d97b69a..2d2e079 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -50,6 +50,7 @@
#include "tree-log.h"
#include "compression.h"
#include "locking.h"
+#include "free-space-cache.h"
struct btrfs_iget_args {
u64 ino;
@@ -70,6 +71,7 @@
struct kmem_cache *btrfs_trans_handle_cachep;
struct kmem_cache *btrfs_transaction_cachep;
struct kmem_cache *btrfs_path_cachep;
+struct kmem_cache *btrfs_free_space_cachep;
#define S_SHIFT 12
static unsigned char btrfs_type_by_mode[S_IFMT >> S_SHIFT] = {
@@ -6761,6 +6763,8 @@
kmem_cache_destroy(btrfs_transaction_cachep);
if (btrfs_path_cachep)
kmem_cache_destroy(btrfs_path_cachep);
+ if (btrfs_free_space_cachep)
+ kmem_cache_destroy(btrfs_free_space_cachep);
}
int btrfs_init_cachep(void)
@@ -6789,6 +6793,12 @@
if (!btrfs_path_cachep)
goto fail;
+ btrfs_free_space_cachep = kmem_cache_create("btrfs_free_space_cache",
+ sizeof(struct btrfs_free_space), 0,
+ SLAB_RECLAIM_ACCOUNT | SLAB_MEM_SPREAD, NULL);
+ if (!btrfs_free_space_cachep)
+ goto fail;
+
return 0;
fail:
btrfs_destroy_cachep();