diff --git a/libraries/liblmdb/CHANGES b/libraries/liblmdb/CHANGES
index 2b81d4afbb..68c1637279 100644
--- a/libraries/liblmdb/CHANGES
+++ b/libraries/liblmdb/CHANGES
@@ -1,5 +1,10 @@
 LMDB 0.9 Change Log
 
+LMDB 0.9.30 Release (2022/10/19)
+	ITS#9919 - Mark infrequently used functions as cold
+	ITS#9723 - clear C_EOF on cursor with MDB_FIRST_DUP
+	ITS#9030 - Use sys/cachectl.h rather than asm/cachectl.h on mips
+
 LMDB 0.9.29 Release (2021/03/16)
 	ITS#9461 refix ITS#9376
 	ITS#9500 fix regression from ITS#8662
diff --git a/libraries/liblmdb/lmdb.h b/libraries/liblmdb/lmdb.h
index 69aa2751a2..30491cd04f 100644
--- a/libraries/liblmdb/lmdb.h
+++ b/libraries/liblmdb/lmdb.h
@@ -200,7 +200,7 @@ typedef int mdb_filehandle_t;
 /** Library minor version */
 #define MDB_VERSION_MINOR	9
 /** Library patch version */
-#define MDB_VERSION_PATCH	29
+#define MDB_VERSION_PATCH	30
 
 /** Combine args a,b,c into a single integer for easy version comparisons */
 #define MDB_VERINT(a,b,c)	(((a) << 24) | ((b) << 16) | (c))
@@ -210,7 +210,7 @@ typedef int mdb_filehandle_t;
 	MDB_VERINT(MDB_VERSION_MAJOR,MDB_VERSION_MINOR,MDB_VERSION_PATCH)
 
 /** The release date of this library version */
-#define MDB_VERSION_DATE	"March 16, 2021"
+#define MDB_VERSION_DATE	"October 19, 2021"
 
 /** A stringifier for the version info */
 #define MDB_VERSTR(a,b,c,d)	"LMDB " #a "." #b "." #c ": (" d ")"
diff --git a/libraries/liblmdb/mdb.c b/libraries/liblmdb/mdb.c
index 8cecdb2e69..b64e3a60d6 100644
--- a/libraries/liblmdb/mdb.c
+++ b/libraries/liblmdb/mdb.c
@@ -77,8 +77,7 @@
 
 #if defined(__mips) && defined(__linux)
 /* MIPS has cache coherency issues, requires explicit cache control */
-#include <asm/cachectl.h>
-extern int cacheflush(char *addr, int nbytes, int cache);
+#include <sys/cachectl.h>
 #define CACHEFLUSH(addr, bytes, cache)	cacheflush(addr, bytes, cache)
 #else
 #define CACHEFLUSH(addr, bytes, cache)
@@ -200,15 +199,21 @@ typedef SSIZE_T	ssize_t;
 # error "Two's complement, reasonably sized integer types, please"
 #endif
 
-#ifdef __GNUC__
-/** Put infrequently used env functions in separate section */
-# ifdef __APPLE__
-#  define	ESECT	__attribute__ ((section("__TEXT,text_env")))
-# else
-#  define	ESECT	__attribute__ ((section("text_env")))
-# endif
+#if (((__clang_major__ << 8) | __clang_minor__) >= 0x0302) || (((__GNUC__ << 8) | __GNUC_MINOR__) >= 0x0403)
+/** Mark infrequently used env functions as cold. This puts them in a separate
+ *  section, and optimizes them for size */
+#define ESECT __attribute__ ((cold))
 #else
-#define ESECT
+/* On older compilers, use a separate section */
+# ifdef __GNUC__
+#  ifdef __APPLE__
+#   define      ESECT   __attribute__ ((section("__TEXT,text_env")))
+#  else
+#   define      ESECT   __attribute__ ((section("text_env")))
+#  endif
+# else
+#  define ESECT
+# endif
 #endif
 
 #ifdef _WIN32
@@ -1517,6 +1522,8 @@ mdb_strerror(int err)
 		NULL, err, 0, ptr, MSGSIZE, (va_list *)buf+MSGSIZE);
 	return ptr;
 #else
+	if (err < 0)
+		return "Invalid error code";
 	return strerror(err);
 #endif
 }
@@ -6477,6 +6484,7 @@ fetchm:
 			rc = MDB_NOTFOUND;
 			break;
 		}
+		mc->mc_flags &= ~C_EOF;
 		{
 			MDB_node *leaf = NODEPTR(mc->mc_pg[mc->mc_top], mc->mc_ki[mc->mc_top]);
 			if (!F_ISSET(leaf->mn_flags, F_DUPDATA)) {
diff --git a/libraries/liblmdb/mdb_dump.c b/libraries/liblmdb/mdb_dump.c
index 671ec574d0..7ea72e8a9a 100644
--- a/libraries/liblmdb/mdb_dump.c
+++ b/libraries/liblmdb/mdb_dump.c
@@ -192,7 +192,7 @@ int main(int argc, char *argv[])
 			break;
 		case 'l':
 			list = 1;
-			/*FALLTHROUGH*/;
+			/*FALLTHROUGH*/
 		case 'a':
 			if (subname)
 				usage(prog);