7e20694d91
xfssyncd triggers the logging of superblock counters every 30s if the filesystem is made with lazy-count=1. This will prevent disks from idling and spinning down as there will be a log write every 30s. With the way counter recovery works for lazy-count=1, this code is unnecessary and provides no real benefit, so just remove it. SGI-PV: 980145 SGI-Modid: xfs-linux-melb:xfs-kern:30840a Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Barry Naujok <bnaujok@sgi.com> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
77 lines
3.1 KiB
C
77 lines
3.1 KiB
C
/*
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* Copyright (c) 2000-2006 Silicon Graphics, Inc.
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* All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it would be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef __XFS_VFS_H__
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#define __XFS_VFS_H__
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#include <linux/vfs.h>
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#include "xfs_fs.h"
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struct inode;
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struct fid;
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struct cred;
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struct seq_file;
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struct super_block;
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struct xfs_inode;
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struct xfs_mount;
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struct xfs_mount_args;
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typedef struct kstatfs bhv_statvfs_t;
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typedef struct bhv_vfs_sync_work {
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struct list_head w_list;
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struct xfs_mount *w_mount;
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void *w_data; /* syncer routine argument */
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void (*w_syncer)(struct xfs_mount *, void *);
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} bhv_vfs_sync_work_t;
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#define SYNC_ATTR 0x0001 /* sync attributes */
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#define SYNC_CLOSE 0x0002 /* close file system down */
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#define SYNC_DELWRI 0x0004 /* look at delayed writes */
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#define SYNC_WAIT 0x0008 /* wait for i/o to complete */
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#define SYNC_BDFLUSH 0x0010 /* BDFLUSH is calling -- don't block */
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#define SYNC_FSDATA 0x0020 /* flush fs data (e.g. superblocks) */
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#define SYNC_REFCACHE 0x0040 /* prune some of the nfs ref cache */
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#define SYNC_REMOUNT 0x0080 /* remount readonly, no dummy LRs */
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#define SYNC_IOWAIT 0x0100 /* wait for all I/O to complete */
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/*
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* When remounting a filesystem read-only or freezing the filesystem,
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* we have two phases to execute. This first phase is syncing the data
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* before we quiesce the fielsystem, and the second is flushing all the
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* inodes out after we've waited for all the transactions created by
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* the first phase to complete. The second phase uses SYNC_INODE_QUIESCE
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* to ensure that the inodes are written to their location on disk
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* rather than just existing in transactions in the log. This means
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* after a quiesce there is no log replay required to write the inodes
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* to disk (this is the main difference between a sync and a quiesce).
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*/
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#define SYNC_DATA_QUIESCE (SYNC_DELWRI|SYNC_FSDATA|SYNC_WAIT|SYNC_IOWAIT)
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#define SYNC_INODE_QUIESCE (SYNC_REMOUNT|SYNC_ATTR|SYNC_WAIT)
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#define SHUTDOWN_META_IO_ERROR 0x0001 /* write attempt to metadata failed */
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#define SHUTDOWN_LOG_IO_ERROR 0x0002 /* write attempt to the log failed */
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#define SHUTDOWN_FORCE_UMOUNT 0x0004 /* shutdown from a forced unmount */
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#define SHUTDOWN_CORRUPT_INCORE 0x0008 /* corrupt in-memory data structures */
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#define SHUTDOWN_REMOTE_REQ 0x0010 /* shutdown came from remote cell */
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#define SHUTDOWN_DEVICE_REQ 0x0020 /* failed all paths to the device */
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#define xfs_test_for_freeze(mp) ((mp)->m_super->s_frozen)
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#define xfs_wait_for_freeze(mp,l) vfs_check_frozen((mp)->m_super, (l))
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#endif /* __XFS_VFS_H__ */
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