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linux-next/fs/gfs2/quota.h
Ying Han 1495f230fa vmscan: change shrinker API by passing shrink_control struct
Change each shrinker's API by consolidating the existing parameters into
shrink_control struct.  This will simplify any further features added w/o
touching each file of shrinker.

[akpm@linux-foundation.org: fix build]
[akpm@linux-foundation.org: fix warning]
[kosaki.motohiro@jp.fujitsu.com: fix up new shrinker API]
[akpm@linux-foundation.org: fix xfs warning]
[akpm@linux-foundation.org: update gfs2]
Signed-off-by: Ying Han <yinghan@google.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Minchan Kim <minchan.kim@gmail.com>
Acked-by: Pavel Emelyanov <xemul@openvz.org>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Acked-by: Rik van Riel <riel@redhat.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Hugh Dickins <hughd@google.com>
Cc: Dave Hansen <dave@linux.vnet.ibm.com>
Cc: Steven Whitehouse <swhiteho@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-05-25 08:39:26 -07:00

60 lines
1.8 KiB
C

/*
* Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
* Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
*
* This copyrighted material is made available to anyone wishing to use,
* modify, copy, or redistribute it subject to the terms and conditions
* of the GNU General Public License version 2.
*/
#ifndef __QUOTA_DOT_H__
#define __QUOTA_DOT_H__
struct gfs2_inode;
struct gfs2_sbd;
struct shrink_control;
#define NO_QUOTA_CHANGE ((u32)-1)
extern int gfs2_quota_hold(struct gfs2_inode *ip, u32 uid, u32 gid);
extern void gfs2_quota_unhold(struct gfs2_inode *ip);
extern int gfs2_quota_lock(struct gfs2_inode *ip, u32 uid, u32 gid);
extern void gfs2_quota_unlock(struct gfs2_inode *ip);
extern int gfs2_quota_check(struct gfs2_inode *ip, u32 uid, u32 gid);
extern void gfs2_quota_change(struct gfs2_inode *ip, s64 change,
u32 uid, u32 gid);
extern int gfs2_quota_sync(struct super_block *sb, int type, int wait);
extern int gfs2_quota_refresh(struct gfs2_sbd *sdp, int user, u32 id);
extern int gfs2_quota_init(struct gfs2_sbd *sdp);
extern void gfs2_quota_cleanup(struct gfs2_sbd *sdp);
extern int gfs2_quotad(void *data);
extern void gfs2_wake_up_statfs(struct gfs2_sbd *sdp);
static inline int gfs2_quota_lock_check(struct gfs2_inode *ip)
{
struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
int ret;
if (sdp->sd_args.ar_quota == GFS2_QUOTA_OFF)
return 0;
ret = gfs2_quota_lock(ip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
if (ret)
return ret;
if (sdp->sd_args.ar_quota != GFS2_QUOTA_ON)
return 0;
ret = gfs2_quota_check(ip, ip->i_inode.i_uid, ip->i_inode.i_gid);
if (ret)
gfs2_quota_unlock(ip);
return ret;
}
extern int gfs2_shrink_qd_memory(struct shrinker *shrink,
struct shrink_control *sc);
extern const struct quotactl_ops gfs2_quotactl_ops;
#endif /* __QUOTA_DOT_H__ */