| David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. |
| Steven Whitehouse | 3a8a9a1 | 2006-05-18 15:09:15 -0400 | [diff] [blame] | 3 | * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved. |
| David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 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 v.2. |
| 8 | */ |
| 9 | |
| 10 | #ifndef __DIO_DOT_H__ |
| 11 | #define __DIO_DOT_H__ |
| 12 | |
| 13 | static inline void gfs2_buffer_clear(struct buffer_head *bh) |
| 14 | { |
| 15 | memset(bh->b_data, 0, bh->b_size); |
| 16 | } |
| 17 | |
| 18 | static inline void gfs2_buffer_clear_tail(struct buffer_head *bh, int head) |
| 19 | { |
| Steven Whitehouse | 420b9e5 | 2006-07-31 15:42:17 -0400 | [diff] [blame^] | 20 | BUG_ON(head > bh->b_size); |
| David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 21 | memset(bh->b_data + head, 0, bh->b_size - head); |
| 22 | } |
| 23 | |
| David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 24 | static inline void gfs2_buffer_copy_tail(struct buffer_head *to_bh, |
| 25 | int to_head, |
| 26 | struct buffer_head *from_bh, |
| 27 | int from_head) |
| 28 | { |
| Steven Whitehouse | 420b9e5 | 2006-07-31 15:42:17 -0400 | [diff] [blame^] | 29 | BUG_ON(from_head < to_head); |
| 30 | memcpy(to_bh->b_data + to_head, from_bh->b_data + from_head, |
| David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 31 | from_bh->b_size - from_head); |
| 32 | memset(to_bh->b_data + to_bh->b_size + to_head - from_head, |
| Steven Whitehouse | 420b9e5 | 2006-07-31 15:42:17 -0400 | [diff] [blame^] | 33 | 0, from_head - to_head); |
| David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 34 | } |
| 35 | |
| 36 | struct inode *gfs2_aspace_get(struct gfs2_sbd *sdp); |
| 37 | void gfs2_aspace_put(struct inode *aspace); |
| 38 | |
| 39 | void gfs2_ail1_start_one(struct gfs2_sbd *sdp, struct gfs2_ail *ai); |
| 40 | int gfs2_ail1_empty_one(struct gfs2_sbd *sdp, struct gfs2_ail *ai, int flags); |
| 41 | void gfs2_ail2_empty_one(struct gfs2_sbd *sdp, struct gfs2_ail *ai); |
| 42 | void gfs2_ail_empty_gl(struct gfs2_glock *gl); |
| 43 | |
| 44 | void gfs2_meta_inval(struct gfs2_glock *gl); |
| 45 | void gfs2_meta_sync(struct gfs2_glock *gl, int flags); |
| 46 | |
| 47 | struct buffer_head *gfs2_meta_new(struct gfs2_glock *gl, uint64_t blkno); |
| 48 | int gfs2_meta_read(struct gfs2_glock *gl, uint64_t blkno, |
| 49 | int flags, struct buffer_head **bhp); |
| 50 | int gfs2_meta_reread(struct gfs2_sbd *sdp, struct buffer_head *bh, int flags); |
| 51 | |
| Steven Whitehouse | 568f4c9 | 2006-02-27 12:00:42 -0500 | [diff] [blame] | 52 | void gfs2_attach_bufdata(struct gfs2_glock *gl, struct buffer_head *bh, |
| 53 | int meta); |
| Steven Whitehouse | a98ab22 | 2006-01-18 13:38:44 +0000 | [diff] [blame] | 54 | void gfs2_pin(struct gfs2_sbd *sdp, struct buffer_head *bh); |
| 55 | void gfs2_unpin(struct gfs2_sbd *sdp, struct buffer_head *bh, |
| 56 | struct gfs2_ail *ai); |
| David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 57 | |
| 58 | void gfs2_meta_wipe(struct gfs2_inode *ip, uint64_t bstart, uint32_t blen); |
| 59 | |
| 60 | void gfs2_meta_cache_flush(struct gfs2_inode *ip); |
| 61 | int gfs2_meta_indirect_buffer(struct gfs2_inode *ip, int height, uint64_t num, |
| 62 | int new, struct buffer_head **bhp); |
| 63 | |
| 64 | static inline int gfs2_meta_inode_buffer(struct gfs2_inode *ip, |
| 65 | struct buffer_head **bhp) |
| 66 | { |
| 67 | return gfs2_meta_indirect_buffer(ip, 0, ip->i_num.no_addr, 0, bhp); |
| 68 | } |
| 69 | |
| 70 | void gfs2_meta_ra(struct gfs2_glock *gl, uint64_t dblock, uint32_t extlen); |
| 71 | void gfs2_meta_syncfs(struct gfs2_sbd *sdp); |
| 72 | |
| 73 | #endif /* __DIO_DOT_H__ */ |
| 74 | |