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authorWarner Losh <imp@FreeBSD.org>2019-06-25 04:50:09 +0000
committerWarner Losh <imp@FreeBSD.org>2019-06-25 04:50:09 +0000
commitf5a95d9a07941650493461c255408f5727d0638b (patch)
treeec681c8739341d8c1e8ff3b891e07a31c0fb3ace /sys/fs/nandfs/nandfs_buffer.c
parente861dab451869582008237a8c11e97348d2440ce (diff)
downloadsrc-f5a95d9a0794.tar.gz
src-f5a95d9a0794.zip
Remove NAND and NANDFS support
NANDFS has been broken for years. Remove it. The NAND drivers that remain are for ancient parts that are no longer relevant. They are polled, have terrible performance and just for ancient arm hardware. NAND parts have evolved significantly from this early work and little to none of it would be relevant should someone need to update to support raw nand. This code has been off by default for years and has violated the vnode protocol leading to panics since it was committed. Numerous posts to arch@ and other locations have found no actual users for this software. Relnotes: Yes No Objection From: arch@ Differential Revision: https://reviews.freebsd.org/D20745
Notes
Notes: svn path=/head/; revision=349352
Diffstat (limited to 'sys/fs/nandfs/nandfs_buffer.c')
-rw-r--r--sys/fs/nandfs/nandfs_buffer.c85
1 files changed, 0 insertions, 85 deletions
diff --git a/sys/fs/nandfs/nandfs_buffer.c b/sys/fs/nandfs/nandfs_buffer.c
deleted file mode 100644
index 57089718554f..000000000000
--- a/sys/fs/nandfs/nandfs_buffer.c
+++ /dev/null
@@ -1,85 +0,0 @@
-/*-
- * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
- *
- * Copyright (c) 2010-2012 Semihalf.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
-
-#include <sys/param.h>
-#include <sys/systm.h>
-#include <sys/conf.h>
-#include <sys/kernel.h>
-#include <sys/lock.h>
-#include <sys/malloc.h>
-#include <sys/mount.h>
-#include <sys/mutex.h>
-#include <sys/buf.h>
-#include <sys/namei.h>
-#include <sys/vnode.h>
-#include <sys/bio.h>
-
-#include <fs/nandfs/nandfs_mount.h>
-#include <fs/nandfs/nandfs.h>
-#include <fs/nandfs/nandfs_subr.h>
-
-struct buf *
-nandfs_geteblk(int size, int flags)
-{
- struct buf *bp;
-
- /*
- * XXX
- * Right now we can call geteblk with GB_NOWAIT_BD flag, which means
- * it can return NULL. But we cannot afford to get NULL, hence this panic.
- */
- bp = geteblk(size, flags);
- if (bp == NULL)
- panic("geteblk returned NULL");
-
- return (bp);
-}
-
-void
-nandfs_dirty_bufs_increment(struct nandfs_device *fsdev)
-{
-
- mtx_lock(&fsdev->nd_mutex);
- KASSERT(fsdev->nd_dirty_bufs >= 0, ("negative nd_dirty_bufs"));
- fsdev->nd_dirty_bufs++;
- mtx_unlock(&fsdev->nd_mutex);
-}
-
-void
-nandfs_dirty_bufs_decrement(struct nandfs_device *fsdev)
-{
-
- mtx_lock(&fsdev->nd_mutex);
- KASSERT(fsdev->nd_dirty_bufs > 0,
- ("decrementing not-positive nd_dirty_bufs"));
- fsdev->nd_dirty_bufs--;
- mtx_unlock(&fsdev->nd_mutex);
-}