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authorDaniel Vetter <daniel.vetter@ffwll.ch>2014-09-11 08:46:53 -0400
committerDaniel Vetter <daniel.vetter@ffwll.ch>2014-09-11 08:46:53 -0400
commit336879b1da97fffc097f77c6d6f818660f2826f0 (patch)
tree4ddb4d1c5d2b67fb096c72e41d2a03b01a605041 /fs/xfs/libxfs/xfs_alloc_btree.h
parent3d3cbd84300e7be1e53083cac0f6f9c12978ecb4 (diff)
parentfdcaa1dbb7c6ed419b10fb8cdb5001ab0a00538f (diff)
Merge remote-tracking branch 'airlied/drm-next' into topic/vblank-rework
Dave asked me to do the backmerge before sending him the revised pull request, so here we go. Nothing fancy in the conflicts, just a few things changed right next to each another. Conflicts: drivers/gpu/drm/drm_irq.c Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Diffstat (limited to 'fs/xfs/libxfs/xfs_alloc_btree.h')
-rw-r--r--fs/xfs/libxfs/xfs_alloc_btree.h65
1 files changed, 65 insertions, 0 deletions
diff --git a/fs/xfs/libxfs/xfs_alloc_btree.h b/fs/xfs/libxfs/xfs_alloc_btree.h
new file mode 100644
index 000000000000..45e189e7e81c
--- /dev/null
+++ b/fs/xfs/libxfs/xfs_alloc_btree.h
@@ -0,0 +1,65 @@
1/*
2 * Copyright (c) 2000,2005 Silicon Graphics, Inc.
3 * All Rights Reserved.
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
7 * published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it would be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18#ifndef __XFS_ALLOC_BTREE_H__
19#define __XFS_ALLOC_BTREE_H__
20
21/*
22 * Freespace on-disk structures
23 */
24
25struct xfs_buf;
26struct xfs_btree_cur;
27struct xfs_mount;
28
29/*
30 * Btree block header size depends on a superblock flag.
31 */
32#define XFS_ALLOC_BLOCK_LEN(mp) \
33 (xfs_sb_version_hascrc(&((mp)->m_sb)) ? \
34 XFS_BTREE_SBLOCK_CRC_LEN : XFS_BTREE_SBLOCK_LEN)
35
36/*
37 * Record, key, and pointer address macros for btree blocks.
38 *
39 * (note that some of these may appear unused, but they are used in userspace)
40 */
41#define XFS_ALLOC_REC_ADDR(mp, block, index) \
42 ((xfs_alloc_rec_t *) \
43 ((char *)(block) + \
44 XFS_ALLOC_BLOCK_LEN(mp) + \
45 (((index) - 1) * sizeof(xfs_alloc_rec_t))))
46
47#define XFS_ALLOC_KEY_ADDR(mp, block, index) \
48 ((xfs_alloc_key_t *) \
49 ((char *)(block) + \
50 XFS_ALLOC_BLOCK_LEN(mp) + \
51 ((index) - 1) * sizeof(xfs_alloc_key_t)))
52
53#define XFS_ALLOC_PTR_ADDR(mp, block, index, maxrecs) \
54 ((xfs_alloc_ptr_t *) \
55 ((char *)(block) + \
56 XFS_ALLOC_BLOCK_LEN(mp) + \
57 (maxrecs) * sizeof(xfs_alloc_key_t) + \
58 ((index) - 1) * sizeof(xfs_alloc_ptr_t)))
59
60extern struct xfs_btree_cur *xfs_allocbt_init_cursor(struct xfs_mount *,
61 struct xfs_trans *, struct xfs_buf *,
62 xfs_agnumber_t, xfs_btnum_t);
63extern int xfs_allocbt_maxrecs(struct xfs_mount *, int, int);
64
65#endif /* __XFS_ALLOC_BTREE_H__ */