From: Volker Lendecke <vlendec@samba.org>
Date: Sun, 27 May 2007 09:22:11 +0000 (+0000)
Subject: r23161: Add TDB_VOLATILE as open_flag to activate the per-hashchain dead record
X-Git-Tag: samba-misc-tags/initial-v3-0-unstable~350
X-Git-Url: http://git.samba.org/samba.git/?p=sfrench%2Fsamba-autobuild%2F.git;a=commitdiff_plain;h=945f73fa39ba6f2b637379ac20d52b4d0306d77f

r23161: Add TDB_VOLATILE as open_flag to activate the per-hashchain dead record
optimization.
---

diff --git a/source/lib/tdb/common/open.c b/source/lib/tdb/common/open.c
index c7fd3f66564..798395cba22 100644
--- a/source/lib/tdb/common/open.c
+++ b/source/lib/tdb/common/open.c
@@ -165,6 +165,10 @@ struct tdb_context *tdb_open_ex(const char *name, int hash_size, int tdb_flags,
 		tdb->page_size = 0x2000;
 	}
 
+	if (open_flags & TDB_VOLATILE) {
+		tdb->max_dead_records = 5;
+	}
+
 	if ((open_flags & O_ACCMODE) == O_WRONLY) {
 		TDB_LOG((tdb, TDB_DEBUG_ERROR, "tdb_open_ex: can't open tdb %s write-only\n",
 			 name));
diff --git a/source/lib/tdb/include/tdb.h b/source/lib/tdb/include/tdb.h
index dafe2a130ec..3268a3bfa04 100644
--- a/source/lib/tdb/include/tdb.h
+++ b/source/lib/tdb/include/tdb.h
@@ -47,6 +47,7 @@ extern "C" {
 #define TDB_BIGENDIAN 32 /* header is big-endian (internal use) */
 #define TDB_NOSYNC   64 /* don't use synchronous transactions */
 #define TDB_SEQNUM   128 /* maintain a sequence number */
+#define TDB_VOLATILE   256 /* Activate the per-hashchain freelist, default 5 */
 
 #define TDB_ERRCODE(code, ret) ((tdb->ecode = (code)), ret)