forked from Minki/linux
70c11ba8f2
Before this patch, several functions in gfs2 related to the updating of the statfs file used a newly acquired/read buffer_head for the local statfs file. This is completely unnecessary, because other nodes should never update it. Recreating the buffer is a waste of time. This patch allows gfs2 to read in the local statefs buffer_head at mount time and keep it around until unmount time. Signed-off-by: Bob Peterson <rpeterso@redhat.com>
66 lines
2.2 KiB
C
66 lines
2.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
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* Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
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*/
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#ifndef __SUPER_DOT_H__
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#define __SUPER_DOT_H__
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#include <linux/fs.h>
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#include <linux/dcache.h>
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#include "incore.h"
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/* Supported fs format version range */
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#define GFS2_FS_FORMAT_MIN (1801)
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#define GFS2_FS_FORMAT_MAX (1802)
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extern void gfs2_lm_unmount(struct gfs2_sbd *sdp);
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static inline unsigned int gfs2_jindex_size(struct gfs2_sbd *sdp)
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{
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unsigned int x;
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spin_lock(&sdp->sd_jindex_spin);
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x = sdp->sd_journals;
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spin_unlock(&sdp->sd_jindex_spin);
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return x;
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}
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extern void gfs2_jindex_free(struct gfs2_sbd *sdp);
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extern struct gfs2_jdesc *gfs2_jdesc_find(struct gfs2_sbd *sdp, unsigned int jid);
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extern int gfs2_jdesc_check(struct gfs2_jdesc *jd);
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extern int gfs2_lookup_in_master_dir(struct gfs2_sbd *sdp, char *filename,
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struct gfs2_inode **ipp);
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extern int gfs2_make_fs_rw(struct gfs2_sbd *sdp);
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extern void gfs2_make_fs_ro(struct gfs2_sbd *sdp);
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extern void gfs2_online_uevent(struct gfs2_sbd *sdp);
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extern int gfs2_statfs_init(struct gfs2_sbd *sdp);
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extern void gfs2_statfs_change(struct gfs2_sbd *sdp, s64 total, s64 free,
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s64 dinodes);
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extern void gfs2_statfs_change_in(struct gfs2_statfs_change_host *sc,
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const void *buf);
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extern void gfs2_statfs_change_out(const struct gfs2_statfs_change_host *sc,
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void *buf);
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extern void update_statfs(struct gfs2_sbd *sdp, struct buffer_head *m_bh);
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extern int gfs2_statfs_sync(struct super_block *sb, int type);
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extern void gfs2_freeze_func(struct work_struct *work);
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extern void free_local_statfs_inodes(struct gfs2_sbd *sdp);
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extern struct inode *find_local_statfs_inode(struct gfs2_sbd *sdp,
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unsigned int index);
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extern void free_sbd(struct gfs2_sbd *sdp);
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extern struct file_system_type gfs2_fs_type;
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extern struct file_system_type gfs2meta_fs_type;
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extern const struct export_operations gfs2_export_ops;
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extern const struct super_operations gfs2_super_ops;
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extern const struct dentry_operations gfs2_dops;
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extern const struct xattr_handler *gfs2_xattr_handlers_max[];
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extern const struct xattr_handler **gfs2_xattr_handlers_min;
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#endif /* __SUPER_DOT_H__ */
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