GFS2: Use resizable hash table for glocks
This patch changes the glock hash table from a normal hash table to
a resizable hash table, which scales better. This also simplifies
a lot of code.
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Acked-by: Steven Whitehouse <swhiteho@redhat.com>
diff --git a/fs/gfs2/incore.h b/fs/gfs2/incore.h
index 35a55f3..e300f74 100644
--- a/fs/gfs2/incore.h
+++ b/fs/gfs2/incore.h
@@ -22,6 +22,7 @@
#include <linux/ktime.h>
#include <linux/percpu.h>
#include <linux/lockref.h>
+#include <linux/rhashtable.h>
#define DIO_WAIT 0x00000010
#define DIO_METADATA 0x00000020
@@ -342,7 +343,6 @@
gl_req:2, /* State in last dlm request */
gl_reply:8; /* Last reply from the dlm */
- unsigned int gl_hash;
unsigned long gl_demote_time; /* time of first demote request */
long gl_hold_time;
struct list_head gl_holders;
@@ -368,7 +368,7 @@
loff_t end;
} gl_vm;
};
- struct rcu_head gl_rcu;
+ struct rhash_head gl_node;
};
#define GFS2_MIN_LVB_SIZE 32 /* Min size of LVB that gfs2 supports */