Update. cvs/libc-ud-970827

1997-08-10 19:17  Philip Blundell  <Philip.Blundell@pobox.com>

	* nss/nss_db/db-XXX.c: Include <db_185.h> not <db.h>.  Somebody
	should update this to use the new db API.
	* nss/nss_db/db-netgrp.c: Likewise.
	* nss/nss_db/db-alias.c: Likewise.
	* db2/Makefile: Makefile for db-2.x in glibc.

1997-08-27 21:20  Ulrich Drepper  <drepper@cygnus.com>

	* csu/Makefile (before-compile): New goal.  Make sure abi-tag.h
	is generated.
	[$(elf)=yes] (asm-CPPFLAGS): Make sure abi-tag.h file can be found.

	* Makeconfig [$(build-omitfp)=yes] (CFLAGS-.o): Add
	-D__USE_STRING_INLINES.
	* string/string.f: Move strnlen optimization after inclusion of
	<bits/string.h>.  Include <bits/string.h> only if __USE_STRING_INLINES
	is defined.
	* sysdeps/generic/memcpy.c: Undef memcpy to allow macro of this name
	in <bits/string.h>.
	* sysdeps/generic/memset.c: Likewise.
	* sysdeps/i386/string.h: i386 optimized string functions.
	* sysdeps/i386/i486string.h: i486+ optimized string functions.

	* Makefile (subdirs): Change db to db2.
	* shlib-versions: Bump libdb verion number to 3.
	* include/db.h: Include from db2 directory.
	* include/db_185.h: New file.
	* sysdeps/i386/Makefile [$(subdirs)=db2] (CPPFLAGS): Add macros
	to provide spinlock information for db2.
	* sysdeps/m68k/m68020/Makefile: New file.  Likewise.
	* sysdeps/sparc/Makefile: New file.  Likewise.
	* sysdeps/unix/sysv/linux/Makefile [$(subdirs)=db2] (CPPFLAGS):
	Add -DHAVE_LLSEEK.
	* db2/config.h: Hand-edited config file for db2 in glibc.
	* db2/compat.h: New file from db-2.3.4.
	* db2/db.h: Likewise.
	* db2/db_185.h: Likewise.
	* db2/db_int.h: Likewise.
	* db2/makedb.c: Likewise.
	* db2/btree/bt_close.c: Likewise.
	* db2/btree/bt_compare.c: Likewise.
	* db2/btree/bt_conv.c: Likewise.
	* db2/btree/bt_cursor.c: Likewise.
	* db2/btree/bt_delete.c: Likewise.
	* db2/btree/bt_open.c: Likewise.
	* db2/btree/bt_page.c: Likewise.
	* db2/btree/bt_put.c: Likewise.
	* db2/btree/bt_rec.c: Likewise.
	* db2/btree/bt_recno.c: Likewise.
	* db2/btree/btree_auto.c: Likewise.
	* db2/btree/bt_rsearch.c: Likewise.
	* db2/btree/bt_search.c: Likewise.
	* db2/btree/bt_split.c: Likewise.
	* db2/btree/bt_stat.c: Likewise.
	* db2/btree/btree.src: Likewise.
	* db2/common/db_appinit.c: Likewise.
	* db2/common/db_err.c: Likewise.
	* db2/common/db_byteorder.c: Likewise.
	* db2/common/db_apprec.c: Likewise.
	* db2/common/db_salloc.c: Likewise.
	* db2/common/db_log2.c: Likewise.
	* db2/common/db_region.c: Likewise.
	* db2/common/db_shash.c: Likewise.
	* db2/db/db.c: Likewise.
	* db2/db/db.src: Likewise.
	* db2/db/db_conv.c: Likewise.
	* db2/db/db_dispatch.c: Likewise.
	* db2/db/db_dup.c: Likewise.
	* db2/db/db_overflow.c: Likewise.
	* db2/db/db_pr.c: Likewise.
	* db2/db/db_rec.c: Likewise.
	* db2/db/db_ret.c: Likewise.
	* db2/db/db_thread.c: Likewise.
	* db2/db/db_auto.c: Likewise.
	* db2/db185/db185.c: Likewise.
	* db2/db185/db185_int.h: Likewise.
	* db2/dbm/dbm.c: Likewise.
	* db2/hash/hash.c: Likewise.
	* db2/hash/hash.src: Likewise.
	* db2/hash/hash_page.c: Likewise.
	* db2/hash/hash_conv.c: Likewise.
	* db2/hash/hash_debug.c: Likewise.
	* db2/hash/hash_stat.c: Likewise.
	* db2/hash/hash_rec.c: Likewise.
	* db2/hash/hash_dup.c: Likewise.
	* db2/hash/hash_func.c: Likewise.
	* db2/hash/hash_auto.c: Likewise.
	* db2/include/mp.h: Likewise.
	* db2/include/btree.h: Likewise.
	* db2/include/db.h.src: Likewise.
	* db2/include/db_int.h.src: Likewise.
	* db2/include/db_shash.h: Likewise.
	* db2/include/db_swap.h: Likewise.
	* db2/include/db_185.h.src: Likewise.
	* db2/include/txn.h: Likewise.
	* db2/include/db_am.h: Likewise.
	* db2/include/shqueue.h: Likewise.
	* db2/include/hash.h: Likewise.
	* db2/include/db_dispatch.h: Likewise.
	* db2/include/lock.h: Likewise.
	* db2/include/db_page.h: Likewise.
	* db2/include/log.h: Likewise.
	* db2/include/db_auto.h: Likewise.
	* db2/include/btree_auto.h: Likewise.
	* db2/include/hash_auto.h: Likewise.
	* db2/include/log_auto.h: Likewise.
	* db2/include/txn_auto.h: Likewise.
	* db2/include/db_ext.h: Likewise.
	* db2/include/btree_ext.h: Likewise.
	* db2/include/clib_ext.h: Likewise.
	* db2/include/common_ext.h: Likewise.
	* db2/include/hash_ext.h: Likewise.
	* db2/include/lock_ext.h: Likewise.
	* db2/include/log_ext.h: Likewise.
	* db2/include/mp_ext.h: Likewise.
	* db2/include/mutex_ext.h: Likewise.
	* db2/include/os_ext.h: Likewise.
	* db2/include/txn_ext.h: Likewise.
	* db2/include/cxx_int.h: Likewise.
	* db2/include/db_cxx.h: Likewise.
	* db2/include/queue.h: Likewise.
	* db2/lock/lock.c: Likewise.
	* db2/lock/lock_conflict.c: Likewise.
	* db2/lock/lock_util.c: Likewise.
	* db2/lock/lock_deadlock.c: Likewise.
	* db2/log/log.c: Likewise.
	* db2/log/log_get.c: Likewise.
	* db2/log/log.src: Likewise.
	* db2/log/log_compare.c: Likewise.
	* db2/log/log_put.c: Likewise.
	* db2/log/log_rec.c: Likewise.
	* db2/log/log_archive.c: Likewise.
	* db2/log/log_register.c: Likewise.
	* db2/log/log_auto.c: Likewise.
	* db2/log/log_findckp.c: Likewise.
	* db2/mp/mp_bh.c: Likewise.
	* db2/mp/mp_fget.c: Likewise.
	* db2/mp/mp_fopen.c: Likewise.
	* db2/mp/mp_fput.c: Likewise.
	* db2/mp/mp_fset.c: Likewise.
	* db2/mp/mp_open.c: Likewise.
	* db2/mp/mp_region.c: Likewise.
	* db2/mp/mp_pr.c: Likewise.
	* db2/mp/mp_sync.c: Likewise.
	* db2/mutex/68020.gcc: Likewise.
	* db2/mutex/mutex.c: Likewise.
	* db2/mutex/README: Likewise.
	* db2/mutex/x86.gcc: Likewise.
	* db2/mutex/sparc.gcc: Likewise.
	* db2/mutex/uts4.cc.s: Likewise.
	* db2/mutex/alpha.dec: Likewise.
	* db2/mutex/alpha.gcc: Likewise.
	* db2/mutex/parisc.gcc: Likewise.
	* db2/mutex/parisc.hp: Likewise.
	* db2/os/db_os_abs.c: Likewise.
	* db2/os/db_os_dir.c: Likewise.
	* db2/os/db_os_fid.c: Likewise.
	* db2/os/db_os_lseek.c: Likewise.
	* db2/os/db_os_mmap.c: Likewise.
	* db2/os/db_os_open.c: Likewise.
	* db2/os/db_os_rw.c: Likewise.
	* db2/os/db_os_sleep.c: Likewise.
	* db2/os/db_os_stat.c: Likewise.
	* db2/os/db_os_unlink.c: Likewise.
	* db2/txn/txn.c: Likewise.
	* db2/txn/txn.src: Likewise.
	* db2/txn/txn_rec.c: Likewise.
	* db2/txn/txn_auto.c: Likewise.
	* db2/clib/getlong.c: Likewise.
	* db2/progs/db_archive/db_archive.c: Likewise.
	* db2/progs/db_checkpoint/db_checkpoint.c: Likewise.
	* db2/progs/db_deadlock/db_deadlock.c: Likewise.
	* db2/progs/db_dump/db_dump.c: Likewise.
	* db2/progs/db_dump185/db_dump185.c: Likewise.
	* db2/progs/db_load/db_load.c: Likewise.
	* db2/progs/db_printlog/db_printlog.c: Likewise.
	* db2/progs/db_recover/db_recover.c: Likewise.
	* db2/progs/db_stat/db_stat.c: Likewise.

	* libio/stdio.h [__cplusplus] (__STDIO_INLINE): Define as inline.

	* po/de.po, po/sv.po: Update from 2.0.5 translations.

	* sysdeps/unix/sysv/linux/netinet/tcp.h: Pretty print.

	* sunrpc/rpc/xdr.h (XDR): Don't define argument of x_destroy callback
	as const.
	* sunrpc/xdr_mem.c (xdrmem_destroy): Don't define argument as const.
	* sunrpx/xdr_rec.c (xdrrec_destroy): Likewise.
	* sunrpx/xdr_stdio.c (xdrstdio_destroy): Likewise.

1997-08-27 18:47  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/unix/sysv/linux/if_index.c: Include <errno.h>.
	Reported by Benjamin Kosnik <bkoz@cygnus.com>.

1997-08-27 02:27  Roland McGrath  <roland@baalperazim.frob.com>

	* abi-tags: New file.
	* csu/Makefile (distribute): Remove abi-tag.h.
	($(objpfx)abi-tag.h): New target.
	* Makefile (distribute): Add abi-tags.
	* sysdeps/unix/sysv/linux/abi-tag.h: File removed.
	* sysdeps/mach/hurd/abi-tag.h: File removed.
	* sysdeps/stub/abi-tag.h: File removed.

1997-08-25  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* sysdeps/unix/make-syscalls.sh: Change output so that it
	generates compilation rules only for the currently selected object
	suffixes.

1997-08-25  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* sysdeps/m68k/dl-machine.h (RTLD_START): Switch back to previous
	section to avoid confusing the compiler.
	* sysdeps/alpha/dl-machine.h (RTLD_START): Likewise.
	* sysdeps/i386/dl-machine.h (RTLD_START): Likewise.
	* sysdeps/mips/dl-machine.h (RTLD_START): Likewise.
	* sysdeps/mips/mips64/dl-machine.h (RTLD_START): Likewise.
	* sysdeps/sparc/sparc32/dl-machine.h (RTLD_START): Likewise.

	* sysdeps/m68k/dl-machine.h (elf_machine_load_address): Use a GOT
	relocation instead of a constant to avoid text relocation.
	(ELF_MACHINE_BEFORE_RTLD_RELOC): Removed.
	(RTLD_START): Declare global labels as functions and add size
	directive.

1997-08-25 17:01  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/i386/bits/select.h: Correct assembler versions to work even
	for descriptors >= 32.

	* stdlib/alloca.h: Don't define alloca to __alloca since if gcc
	is used __alloca is not defined to __builtin_alloca and so might
	not be available.
	Reported by Uwe Ohse <uwe@ohse.de>.

	* sysdeps/unix/sysv/linux/sys/sysmacros.h: Define macros in a special
	way if gcc is not used and so dev_t is an array.
	Reported by Uwe Ohse <uwe@ohse.de>.

1997-08-23  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* manual/libc.texinfo: Reorder chapters to match logical order.

1997-08-25 12:22  Ulrich Drepper  <drepper@cygnus.com>

	* sunrpc/rpc/xdr.h: Change name of parameters in prototypes of
	xdr_reference, xdrmem_create, and xdrstdio_create because of clash
	with g++ internal symbols.
	Patch by Sudish Joseph <sj@eng.mindspring.net>.

	* elf/dl-deps.c: Implement handling of DT_FILTER.

1 files changed, 437 insertions, 0 deletions

diff --git a/db2/mp/mp_bh.c b/db2/mp/mp_bh.c
new file mode 100644
index 0000000000..e1b68ce450
--- /dev/null
+++ b/db2/mp/mp_bh.c
@@ -0,0 +1,437 @@
+/*-
+ * See the file LICENSE for redistribution information.
+ *
+ * Copyright (c) 1996, 1997
+ *	Sleepycat Software.  All rights reserved.
+ */
+#include "config.h"
+
+#ifndef lint
+static const char sccsid[] = "@(#)mp_bh.c	10.12 (Sleepycat) 8/20/97";
+#endif /* not lint */
+
+#ifndef NO_SYSTEM_INCLUDES
+#include <sys/types.h>
+
+#include <errno.h>
+#include <string.h>
+#include <unistd.h>
+#endif
+
+#include "db_int.h"
+#include "shqueue.h"
+#include "db_shash.h"
+#include "mp.h"
+#include "common_ext.h"
+
+/*
+ * __memp_bhwrite --
+ *	Write the page associated with a given bucket header.
+ *
+ * PUBLIC: int __memp_bhwrite
+ * PUBLIC:     __P((DB_MPOOL *, MPOOLFILE *, BH *, int *, int *));
+ */
+int
+__memp_bhwrite(dbmp, mfp, bhp, restartp, wrotep)
+	DB_MPOOL *dbmp;
+	MPOOLFILE *mfp;
+	BH *bhp;
+	int *restartp, *wrotep;
+{
+	DBT dbt;
+	DB_MPOOLFILE *dbmfp;
+	DB_MPREG *mpreg;
+
+	if (restartp != NULL)
+		*restartp = 0;
+	if (wrotep != NULL)
+		*wrotep = 0;
+
+	/*
+	 * Walk the process' DB_MPOOLFILE list and try and find a file
+	 * descriptor for this file.
+	 */
+	LOCKHANDLE(dbmp, &dbmp->mutex);
+	for (dbmfp = TAILQ_FIRST(&dbmp->dbmfq);
+	    dbmfp != NULL; dbmfp = TAILQ_NEXT(dbmfp, q))
+		if (dbmfp->mfp == mfp)
+			break;
+	UNLOCKHANDLE(dbmp, &dbmp->mutex);
+	if (dbmfp != NULL)
+		goto found;
+
+	/*
+	 * It's not a page from a file we've opened.  If the file requires
+	 * input/output processing, see if this process has ever registered
+	 * information as to how to write this type of file.  If not, there's
+	 * nothing we can do.
+	 */
+	if (mfp->ftype != 0) {
+		LOCKHANDLE(dbmp, &dbmp->mutex);
+		for (mpreg = LIST_FIRST(&dbmp->dbregq);
+		    mpreg != NULL; mpreg = LIST_NEXT(mpreg, q))
+			if (mpreg->ftype == mfp->ftype)
+				break;
+		UNLOCKHANDLE(dbmp, &dbmp->mutex);
+		if (mpreg == NULL)
+			return (0);
+	}
+
+	/*
+	 * Try and open the file; ignore any error, assume it's a permissions
+	 * problem.
+	 */
+	dbt.size = mfp->pgcookie_len;
+	dbt.data = ADDR(dbmp, mfp->pgcookie_off);
+	if (__memp_fopen(dbmp, ADDR(dbmp, mfp->path_off),
+	    mfp->ftype, 0, 0, mfp->stat.st_pagesize,
+	    mfp->lsn_off, &dbt, ADDR(dbmp, mfp->fileid_off), 0, &dbmfp) != 0)
+		return (0);
+
+found:	return (__memp_pgwrite(dbmfp, bhp, restartp, wrotep));
+}
+
+/*
+ * __memp_pgread --
+ *	Read a page from a file.
+ *
+ * PUBLIC: int __memp_pgread __P((DB_MPOOLFILE *, BH *, int));
+ */
+int
+__memp_pgread(dbmfp, bhp, can_create)
+	DB_MPOOLFILE *dbmfp;
+	BH *bhp;
+	int can_create;
+{
+	DB_MPOOL *dbmp;
+	MPOOLFILE *mfp;
+	size_t pagesize;
+	ssize_t nr;
+	int ret;
+
+	dbmp = dbmfp->dbmp;
+	mfp = dbmfp->mfp;
+	pagesize = mfp->stat.st_pagesize;
+
+	F_SET(bhp, BH_LOCKED | BH_TRASH);
+	LOCKBUFFER(dbmp, bhp);
+	UNLOCKREGION(dbmp);
+
+	/*
+	 * Temporary files may not yet have been created.
+	 *
+	 * Seek to the page location.
+	 */
+	ret = 0;
+	LOCKHANDLE(dbmp, &dbmfp->mutex);
+	if (dbmfp->fd == -1 || (ret =
+	    __db_lseek(dbmfp->fd, pagesize, bhp->pgno, 0, SEEK_SET)) != 0) {
+		if (!can_create) {
+			if (dbmfp->fd == -1)
+				ret = EINVAL;
+			UNLOCKHANDLE(dbmp, &dbmfp->mutex);
+			__db_err(dbmp->dbenv,
+			    "%s: page %lu doesn't exist, create flag not set",
+			    dbmfp->path, (u_long)bhp->pgno);
+			goto err;
+		}
+		UNLOCKHANDLE(dbmp, &dbmfp->mutex);
+
+		/* Clear any uninitialized data. */
+		memset(bhp->buf, 0, pagesize);
+		goto pgin;
+	}
+
+	/*
+	 * Read the page; short reads are treated like creates, although
+	 * any valid data is preserved.
+	 */
+	ret = __db_read(dbmfp->fd, bhp->buf, pagesize, &nr);
+	UNLOCKHANDLE(dbmp, &dbmfp->mutex);
+	if (ret != 0)
+		goto err;
+
+	if (nr == (ssize_t)pagesize)
+		can_create = 0;
+	else {
+		if (!can_create) {
+			ret = EINVAL;
+			goto err;
+		}
+
+		/* Clear any uninitialized data. */
+		memset(bhp->buf + nr, 0, pagesize - nr);
+	}
+
+	/* Call any pgin function. */
+pgin:	ret = mfp->ftype == 0 ? 0 : __memp_pg(dbmfp, bhp, 1);
+
+	/* Reacquire the region lock. */
+	LOCKREGION(dbmp);
+
+	/* If the pgin function succeeded, the data is now valid. */
+	if (ret == 0)
+		F_CLR(bhp, BH_TRASH);
+
+	/* Update the statistics. */
+	if (can_create) {
+		++dbmp->mp->stat.st_page_create;
+		++mfp->stat.st_page_create;
+	} else {
+		++dbmp->mp->stat.st_page_in;
+		++mfp->stat.st_page_in;
+	}
+
+	if (0) {
+err:		LOCKREGION(dbmp);
+	}
+
+	/* Release the buffer. */
+	F_CLR(bhp, BH_LOCKED);
+	UNLOCKBUFFER(dbmp, bhp);
+
+	return (ret);
+}
+
+/*
+ * __memp_pgwrite --
+ *	Write a page to a file.
+ *
+ * PUBLIC: int __memp_pgwrite __P((DB_MPOOLFILE *, BH *, int *, int *));
+ */
+int
+__memp_pgwrite(dbmfp, bhp, restartp, wrotep)
+	DB_MPOOLFILE *dbmfp;
+	BH *bhp;
+	int *restartp, *wrotep;
+{
+	DB_ENV *dbenv;
+	DB_LOG *lg_info;
+	DB_LSN lsn;
+	DB_MPOOL *dbmp;
+	MPOOL *mp;
+	MPOOLFILE *mfp;
+	size_t pagesize;
+	ssize_t nw;
+	int callpgin, ret;
+	const char *fail;
+
+	dbmp = dbmfp->dbmp;
+	dbenv = dbmp->dbenv;
+	mfp = dbmfp->mfp;
+
+	if (restartp != NULL)
+		*restartp = 0;
+	if (wrotep != NULL)
+		*wrotep = 0;
+	callpgin = 0;
+	pagesize = mfp->stat.st_pagesize;
+
+	F_SET(bhp, BH_LOCKED);
+	LOCKBUFFER(dbmp, bhp);
+	UNLOCKREGION(dbmp);
+
+	if (restartp != NULL)
+		*restartp = 1;
+
+	/* Copy the LSN off the page if we're going to need it. */
+	lg_info = dbenv->lg_info;
+	if (lg_info != NULL || F_ISSET(bhp, BH_WRITE))
+		memcpy(&lsn, bhp->buf + mfp->lsn_off, sizeof(DB_LSN));
+
+	/* Ensure the appropriate log records are on disk. */
+	if (lg_info != NULL && (ret = log_flush(lg_info, &lsn)) != 0)
+		goto err;
+
+	/*
+	 * Call any pgout function.  We set the callpgin flag so that on
+	 * error we flag that the contents of the buffer may be trash.
+	 */
+	if (mfp->ftype == 0)
+		ret = 0;
+	else {
+		callpgin = 1;
+		if ((ret = __memp_pg(dbmfp, bhp, 0)) != 0)
+			goto err;
+	}
+
+	/* Temporary files may not yet have been created. */
+	LOCKHANDLE(dbmp, &dbmfp->mutex);
+	if (dbmfp->fd == -1 && ((ret = __db_appname(dbenv, DB_APP_TMP,
+	    NULL, NULL, &dbmfp->fd, NULL)) != 0 || dbmfp->fd == -1)) {
+		UNLOCKHANDLE(dbmp, &dbmfp->mutex);
+		__db_err(dbenv, "unable to create temporary backing file");
+		goto err;
+	}
+
+	/* Write the page out. */
+	if ((ret =
+	    __db_lseek(dbmfp->fd, pagesize, bhp->pgno, 0, SEEK_SET)) != 0)
+		fail = "seek";
+	else if ((ret = __db_write(dbmfp->fd, bhp->buf, pagesize, &nw)) != 0)
+		fail = "write";
+	UNLOCKHANDLE(dbmp, &dbmfp->mutex);
+	if (ret != 0) {
+		/*
+		 * XXX
+		 * Shut the compiler up; it doesn't understand the correlation
+		 * between the failing clauses to __db_lseek and __db_write and
+		 * this ret != 0.
+		 */
+		fail = NULL;
+		goto syserr;
+	}
+
+	if (nw != (ssize_t)pagesize) {
+		ret = EIO;
+		fail = "write";
+		goto syserr;
+	}
+
+	if (wrotep != NULL)
+		*wrotep = 1;
+
+	/* Reacquire the region lock. */
+	LOCKREGION(dbmp);
+
+	/* Clean up the flags based on a successful write. */
+	F_SET(bhp, BH_CALLPGIN);
+	F_CLR(bhp, BH_DIRTY | BH_LOCKED);
+	UNLOCKBUFFER(dbmp, bhp);
+
+	/*
+	 * If we wrote a buffer which a checkpoint is waiting for, update
+	 * the count of pending buffers (both in the mpool as a whole and
+	 * for this file).  If the count for this file goes to zero, flush
+	 * the writes.
+	 *
+	 * XXX:
+	 * We ignore errors from the sync -- it makes no sense to return an
+	 * error to the calling process, so set a flag causing the sync to
+	 * be retried later.
+	 *
+	 * If the buffer we wrote has a LSN larger than the current largest
+	 * we've written for this checkpoint, update the saved value.
+	 */
+	mp = dbmp->mp;
+	if (F_ISSET(bhp, BH_WRITE)) {
+		if (log_compare(&lsn, &mp->lsn) > 0)
+			mp->lsn = lsn;
+		F_CLR(bhp, BH_WRITE);
+
+		--mp->lsn_cnt;
+		if (--mfp->lsn_cnt == 0) {
+			/*
+			 * Don't lock -- there are no atomicity issues for
+			 * fsync(2).
+			 */
+			if (__db_fsync(dbmfp->fd) != 0)
+				F_SET(mp, MP_LSN_RETRY);
+		}
+	}
+
+	/* Update I/O statistics. */
+	++mp->stat.st_page_out;
+	++mfp->stat.st_page_out;
+
+	return (0);
+
+syserr:	__db_err(dbenv,
+	    "%s: %s failed for page %lu", dbmfp->path, fail, (u_long)bhp->pgno);
+
+err:	UNLOCKBUFFER(dbmp, bhp);
+	LOCKREGION(dbmp);
+	if (callpgin)
+		F_SET(bhp, BH_CALLPGIN);
+	F_CLR(bhp, BH_LOCKED);
+	return (ret);
+}
+
+/*
+ * __memp_pg --
+ *	Call the pgin/pgout routine.
+ *
+ * PUBLIC: int __memp_pg __P((DB_MPOOLFILE *, BH *, int));
+ */
+int
+__memp_pg(dbmfp, bhp, is_pgin)
+	DB_MPOOLFILE *dbmfp;
+	BH *bhp;
+	int is_pgin;
+{
+	DBT dbt, *dbtp;
+	DB_MPOOL *dbmp;
+	DB_MPREG *mpreg;
+	MPOOLFILE *mfp;
+	int ftype, ret;
+
+	dbmp = dbmfp->dbmp;
+	mfp = dbmfp->mfp;
+
+	LOCKHANDLE(dbmp, &dbmp->mutex);
+
+	ftype = mfp->ftype;
+	for (mpreg = LIST_FIRST(&dbmp->dbregq);
+	    mpreg != NULL; mpreg = LIST_NEXT(mpreg, q)) {
+		if (ftype != mpreg->ftype)
+			continue;
+		if (mfp->pgcookie_len == 0)
+			dbtp = NULL;
+		else {
+			dbt.size = mfp->pgcookie_len;
+			dbt.data = ADDR(dbmp, mfp->pgcookie_off);
+			dbtp = &dbt;
+		}
+		UNLOCKHANDLE(dbmp, &dbmp->mutex);
+
+		if (is_pgin) {
+			if (mpreg->pgin != NULL && (ret =
+			    mpreg->pgin(bhp->pgno, bhp->buf, dbtp)) != 0)
+				goto err;
+		} else
+			if (mpreg->pgout != NULL && (ret =
+			    mpreg->pgout(bhp->pgno, bhp->buf, dbtp)) != 0)
+				goto err;
+		break;
+	}
+
+	if (mpreg == NULL)
+		UNLOCKHANDLE(dbmp, &dbmp->mutex);
+
+	return (0);
+
+err:	UNLOCKHANDLE(dbmp, &dbmp->mutex);
+	__db_err(dbmp->dbenv, "%s: %s failed for page %lu",
+	    dbmfp->path, is_pgin ? "pgin" : "pgout", (u_long)bhp->pgno);
+	return (ret);
+}
+
+/*
+ * __memp_bhfree --
+ *	Free a bucket header and its referenced data.
+ *
+ * PUBLIC: void __memp_bhfree __P((DB_MPOOL *, MPOOLFILE *, BH *, int));
+ */
+void
+__memp_bhfree(dbmp, mfp, bhp, free_mem)
+	DB_MPOOL *dbmp;
+	MPOOLFILE *mfp;
+	BH *bhp;
+	int free_mem;
+{
+	size_t off;
+
+	/* Delete the buffer header from the MPOOL hash list. */
+	off = BUCKET(dbmp->mp, OFFSET(dbmp, mfp), bhp->pgno);
+	SH_TAILQ_REMOVE(&dbmp->htab[off], bhp, mq, __bh);
+
+	/* Delete the buffer header from the LRU chain. */
+	SH_TAILQ_REMOVE(&dbmp->mp->bhq, bhp, q, __bh);
+
+	/*
+	 * If we're not reusing it immediately, free the buffer header
+	 * and data for real.
+	 */
+	if (free_mem)
+		__db_shalloc_free(dbmp->addr, bhp);
+}