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3d3c10f2ce
GFS2 now has three new mount options, statfs_quantum, quota_quantum and statfs_percent. statfs_quantum and quota_quantum simply allow you to set the tunables of the same name. Setting setting statfs_quantum to 0 will also turn on the statfs_slow tunable. statfs_percent accepts an integer between 0 and 100. Numbers between 1 and 100 will cause GFS2 to do any early sync when the local number of blocks free changes by at least statfs_percent from the totoal number of blocks free. Setting statfs_percent to 0 disables this. Signed-off-by: Benjamin Marzinski <bmarzins@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
57 lines
1.7 KiB
C
57 lines
1.7 KiB
C
/*
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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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* This copyrighted material is made available to anyone wishing to use,
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* modify, copy, or redistribute it subject to the terms and conditions
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* of the GNU General Public License version 2.
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*/
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#ifndef __QUOTA_DOT_H__
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#define __QUOTA_DOT_H__
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struct gfs2_inode;
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struct gfs2_sbd;
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#define NO_QUOTA_CHANGE ((u32)-1)
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extern int gfs2_quota_hold(struct gfs2_inode *ip, u32 uid, u32 gid);
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extern void gfs2_quota_unhold(struct gfs2_inode *ip);
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extern int gfs2_quota_lock(struct gfs2_inode *ip, u32 uid, u32 gid);
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extern void gfs2_quota_unlock(struct gfs2_inode *ip);
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extern int gfs2_quota_check(struct gfs2_inode *ip, u32 uid, u32 gid);
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extern void gfs2_quota_change(struct gfs2_inode *ip, s64 change,
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u32 uid, u32 gid);
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extern int gfs2_quota_sync(struct super_block *sb, int type);
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extern int gfs2_quota_refresh(struct gfs2_sbd *sdp, int user, u32 id);
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extern int gfs2_quota_init(struct gfs2_sbd *sdp);
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extern void gfs2_quota_cleanup(struct gfs2_sbd *sdp);
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extern int gfs2_quotad(void *data);
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extern void gfs2_wake_up_statfs(struct gfs2_sbd *sdp);
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static inline int gfs2_quota_lock_check(struct gfs2_inode *ip)
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{
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struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
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int ret;
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if (sdp->sd_args.ar_quota == GFS2_QUOTA_OFF)
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return 0;
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ret = gfs2_quota_lock(ip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
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if (ret)
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return ret;
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if (sdp->sd_args.ar_quota != GFS2_QUOTA_ON)
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return 0;
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ret = gfs2_quota_check(ip, ip->i_inode.i_uid, ip->i_inode.i_gid);
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if (ret)
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gfs2_quota_unlock(ip);
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return ret;
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}
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extern int gfs2_shrink_qd_memory(int nr, gfp_t gfp_mask);
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extern const struct quotactl_ops gfs2_quotactl_ops;
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#endif /* __QUOTA_DOT_H__ */
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