feaa7bba02
This patch fixes the way we have been dealing with unlinked, but still open files. It removes all limits (other than memory for inodes, as per every other filesystem) on numbers of these which we can support on GFS2. It also means that (like other fs) its the responsibility of the last process to close the file to deallocate the storage, rather than the person who did the unlinking. Note that with GFS2, those two events might take place on different nodes. Also there are a number of other changes: o We use the Linux inode subsystem as it was intended to be used, wrt allocating GFS2 inodes o The Linux inode cache is now the point which we use for local enforcement of only holding one copy of the inode in core at once (previous to this we used the glock layer). o We no longer use the unlinked "special" file. We just ignore it completely. This makes unlinking more efficient. o We now use the 4th block allocation state. The previously unused state is used to track unlinked but still open inodes. o gfs2_inoded is no longer needed o Several fields are now no longer needed (and removed) from the in core struct gfs2_inode o Several fields are no longer needed (and removed) from the in core superblock There are a number of future possible optimisations and clean ups which have been made possible by this patch. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
34 lines
1 KiB
C
34 lines
1 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 v.2.
|
|
*/
|
|
|
|
#ifndef __TRANS_DOT_H__
|
|
#define __TRANS_DOT_H__
|
|
|
|
#define RES_DINODE 1
|
|
#define RES_INDIRECT 1
|
|
#define RES_JDATA 1
|
|
#define RES_DATA 1
|
|
#define RES_LEAF 1
|
|
#define RES_RG_BIT 2
|
|
#define RES_EATTR 1
|
|
#define RES_STATFS 1
|
|
#define RES_QUOTA 2
|
|
|
|
int gfs2_trans_begin(struct gfs2_sbd *sdp,
|
|
unsigned int blocks, unsigned int revokes);
|
|
|
|
void gfs2_trans_end(struct gfs2_sbd *sdp);
|
|
|
|
void gfs2_trans_add_gl(struct gfs2_glock *gl);
|
|
void gfs2_trans_add_bh(struct gfs2_glock *gl, struct buffer_head *bh, int meta);
|
|
void gfs2_trans_add_revoke(struct gfs2_sbd *sdp, uint64_t blkno);
|
|
void gfs2_trans_add_unrevoke(struct gfs2_sbd *sdp, uint64_t blkno);
|
|
void gfs2_trans_add_rg(struct gfs2_rgrpd *rgd);
|
|
|
|
#endif /* __TRANS_DOT_H__ */
|