meta_io.h (d585a021c0b10b0477d6b608c53e1feb8cde0507) meta_io.h (009d851837ab26cab18adda6169a813f70b0b21b)
1/*
2 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
3 * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
4 *
5 * This copyrighted material is made available to anyone wishing to use,
6 * modify, copy, or redistribute it subject to the terms and conditions
7 * of the GNU General Public License version 2.
8 */

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32{
33 BUG_ON(from_head < to_head);
34 memcpy(to_bh->b_data + to_head, from_bh->b_data + from_head,
35 from_bh->b_size - from_head);
36 memset(to_bh->b_data + to_bh->b_size + to_head - from_head,
37 0, from_head - to_head);
38}
39
1/*
2 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
3 * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
4 *
5 * This copyrighted material is made available to anyone wishing to use,
6 * modify, copy, or redistribute it subject to the terms and conditions
7 * of the GNU General Public License version 2.
8 */

--- 23 unchanged lines hidden (view full) ---

32{
33 BUG_ON(from_head < to_head);
34 memcpy(to_bh->b_data + to_head, from_bh->b_data + from_head,
35 from_bh->b_size - from_head);
36 memset(to_bh->b_data + to_bh->b_size + to_head - from_head,
37 0, from_head - to_head);
38}
39
40struct inode *gfs2_aspace_get(struct gfs2_sbd *sdp);
41void gfs2_aspace_put(struct inode *aspace);
40extern const struct address_space_operations gfs2_meta_aops;
42
41
42static inline struct gfs2_sbd *gfs2_mapping2sbd(struct address_space *mapping)
43{
44 struct inode *inode = mapping->host;
45 if (mapping->a_ops == &gfs2_meta_aops)
46 return (((struct gfs2_glock *)mapping) - 1)->gl_sbd;
47 else
48 return inode->i_sb->s_fs_info;
49}
50
43void gfs2_meta_sync(struct gfs2_glock *gl);
44
45struct buffer_head *gfs2_meta_new(struct gfs2_glock *gl, u64 blkno);
46int gfs2_meta_read(struct gfs2_glock *gl, u64 blkno,
47 int flags, struct buffer_head **bhp);
48int gfs2_meta_wait(struct gfs2_sbd *sdp, struct buffer_head *bh);
49struct buffer_head *gfs2_getbuf(struct gfs2_glock *gl, u64 blkno, int create);
50

--- 26 unchanged lines hidden --- 		51void gfs2_meta_sync(struct gfs2_glock *gl);
52
53struct buffer_head *gfs2_meta_new(struct gfs2_glock *gl, u64 blkno);
54int gfs2_meta_read(struct gfs2_glock *gl, u64 blkno,
55 int flags, struct buffer_head **bhp);
56int gfs2_meta_wait(struct gfs2_sbd *sdp, struct buffer_head *bh);
57struct buffer_head *gfs2_getbuf(struct gfs2_glock *gl, u64 blkno, int create);
58

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