forked from luck/tmp_suning_uos_patched
1a59d1b8e0
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 59 temple place suite 330 boston ma 02111 1307 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 1334 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.113240726@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
156 lines
3.3 KiB
C
156 lines
3.3 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (C) International Business Machines Corp., 2000-2004
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*/
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/*
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* jfs_umount.c
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*
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* note: file system in transition to aggregate/fileset:
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* (ref. jfs_mount.c)
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*
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* file system unmount is interpreted as mount of the single/only
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* fileset in the aggregate and, if unmount of the last fileset,
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* as unmount of the aggerate;
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*/
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#include <linux/fs.h>
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#include "jfs_incore.h"
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#include "jfs_filsys.h"
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#include "jfs_superblock.h"
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#include "jfs_dmap.h"
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#include "jfs_imap.h"
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#include "jfs_metapage.h"
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#include "jfs_debug.h"
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/*
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* NAME: jfs_umount(vfsp, flags, crp)
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*
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* FUNCTION: vfs_umount()
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*
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* PARAMETERS: vfsp - virtual file system pointer
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* flags - unmount for shutdown
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* crp - credential
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*
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* RETURN : EBUSY - device has open files
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*/
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int jfs_umount(struct super_block *sb)
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{
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struct jfs_sb_info *sbi = JFS_SBI(sb);
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struct inode *ipbmap = sbi->ipbmap;
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struct inode *ipimap = sbi->ipimap;
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struct inode *ipaimap = sbi->ipaimap;
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struct inode *ipaimap2 = sbi->ipaimap2;
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struct jfs_log *log;
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int rc = 0;
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jfs_info("UnMount JFS: sb:0x%p", sb);
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/*
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* update superblock and close log
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*
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* if mounted read-write and log based recovery was enabled
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*/
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if ((log = sbi->log))
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/*
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* Wait for outstanding transactions to be written to log:
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*/
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jfs_flush_journal(log, 2);
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/*
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* close fileset inode allocation map (aka fileset inode)
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*/
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diUnmount(ipimap, 0);
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diFreeSpecial(ipimap);
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sbi->ipimap = NULL;
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/*
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* close secondary aggregate inode allocation map
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*/
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ipaimap2 = sbi->ipaimap2;
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if (ipaimap2) {
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diUnmount(ipaimap2, 0);
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diFreeSpecial(ipaimap2);
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sbi->ipaimap2 = NULL;
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}
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/*
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* close aggregate inode allocation map
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*/
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ipaimap = sbi->ipaimap;
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diUnmount(ipaimap, 0);
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diFreeSpecial(ipaimap);
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sbi->ipaimap = NULL;
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/*
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* close aggregate block allocation map
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*/
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dbUnmount(ipbmap, 0);
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diFreeSpecial(ipbmap);
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sbi->ipimap = NULL;
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/*
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* Make sure all metadata makes it to disk before we mark
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* the superblock as clean
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*/
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filemap_write_and_wait(sbi->direct_inode->i_mapping);
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/*
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* ensure all file system file pages are propagated to their
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* home blocks on disk (and their in-memory buffer pages are
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* invalidated) BEFORE updating file system superblock state
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* (to signify file system is unmounted cleanly, and thus in
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* consistent state) and log superblock active file system
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* list (to signify skip logredo()).
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*/
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if (log) { /* log = NULL if read-only mount */
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updateSuper(sb, FM_CLEAN);
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/*
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* close log:
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*
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* remove file system from log active file system list.
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*/
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rc = lmLogClose(sb);
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}
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jfs_info("UnMount JFS Complete: rc = %d", rc);
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return rc;
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}
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int jfs_umount_rw(struct super_block *sb)
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{
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struct jfs_sb_info *sbi = JFS_SBI(sb);
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struct jfs_log *log = sbi->log;
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if (!log)
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return 0;
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/*
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* close log:
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*
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* remove file system from log active file system list.
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*/
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jfs_flush_journal(log, 2);
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/*
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* Make sure all metadata makes it to disk
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*/
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dbSync(sbi->ipbmap);
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diSync(sbi->ipimap);
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/*
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* Note that we have to do this even if sync_blockdev() will
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* do exactly the same a few instructions later: We can't
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* mark the superblock clean before everything is flushed to
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* disk.
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*/
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filemap_write_and_wait(sbi->direct_inode->i_mapping);
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updateSuper(sb, FM_CLEAN);
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return lmLogClose(sb);
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}
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