2 * Copyright (c) 2000-2003 Silicon Graphics, Inc. All Rights Reserved.
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms of version 2 of the GNU General Public License as
6 * published by the Free Software Foundation.
8 * This program is distributed in the hope that it would be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
12 * Further, this software is distributed without any warranty that it is
13 * free of the rightful claim of any third person regarding infringement
14 * or the like. Any license provided herein, whether implied or
15 * otherwise, applies only to this software file. Patent licenses, if
16 * any, provided herein do not apply to combinations of this program with
17 * other software, or any other product whatsoever.
19 * You should have received a copy of the GNU General Public License along
20 * with this program; if not, write the Free Software Foundation, Inc., 59
21 * Temple Place - Suite 330, Boston MA 02111-1307, USA.
23 * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
24 * Mountain View, CA 94043, or:
28 * For further information regarding this notice, see:
30 * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
35 /* These are just for xfs_syncsub... it sets an internal variable
36 * then passes it to VOP_FLUSH_PAGES or adds the flags to a newly gotten buf_t
38 #define XFS_B_ASYNC PBF_ASYNC
39 #define XFS_B_DELWRI PBF_DELWRI
40 #define XFS_B_READ PBF_READ
41 #define XFS_B_WRITE PBF_WRITE
42 #define XFS_B_STALE PBF_STALE
44 #define XFS_BUF_TRYLOCK PBF_TRYLOCK
45 #define XFS_INCORE_TRYLOCK PBF_TRYLOCK
46 #define XFS_BUF_LOCK PBF_LOCK
47 #define XFS_BUF_MAPPED PBF_MAPPED
49 #define BUF_BUSY PBF_DONT_BLOCK
51 #define XFS_BUF_BFLAGS(x) ((x)->pb_flags)
52 #define XFS_BUF_ZEROFLAGS(x) \
53 ((x)->pb_flags &= ~(PBF_READ|PBF_WRITE|PBF_ASYNC|PBF_SYNC|PBF_DELWRI))
55 #define XFS_BUF_STALE(x) ((x)->pb_flags |= XFS_B_STALE)
56 #define XFS_BUF_UNSTALE(x) ((x)->pb_flags &= ~XFS_B_STALE)
57 #define XFS_BUF_ISSTALE(x) ((x)->pb_flags & XFS_B_STALE)
58 #define XFS_BUF_SUPER_STALE(x) do { \
64 #define XFS_BUF_MANAGE PBF_FS_MANAGED
65 #define XFS_BUF_UNMANAGE(x) ((x)->pb_flags &= ~PBF_FS_MANAGED)
67 static inline void xfs_buf_undelay(page_buf_t *pb)
69 if (pb->pb_flags & PBF_DELWRI) {
70 if (pb->pb_list.next != &pb->pb_list) {
71 pagebuf_delwri_dequeue(pb);
74 pb->pb_flags &= ~PBF_DELWRI;
79 #define XFS_BUF_DELAYWRITE(x) ((x)->pb_flags |= PBF_DELWRI)
80 #define XFS_BUF_UNDELAYWRITE(x) xfs_buf_undelay(x)
81 #define XFS_BUF_ISDELAYWRITE(x) ((x)->pb_flags & PBF_DELWRI)
83 #define XFS_BUF_ERROR(x,no) pagebuf_ioerror(x,no)
84 #define XFS_BUF_GETERROR(x) pagebuf_geterror(x)
85 #define XFS_BUF_ISERROR(x) (pagebuf_geterror(x)?1:0)
87 #define XFS_BUF_DONE(x) ((x)->pb_flags &= ~(PBF_PARTIAL|PBF_NONE))
88 #define XFS_BUF_UNDONE(x) ((x)->pb_flags |= PBF_PARTIAL|PBF_NONE)
89 #define XFS_BUF_ISDONE(x) (!(PBF_NOT_DONE(x)))
91 #define XFS_BUF_BUSY(x) ((x)->pb_flags |= PBF_FORCEIO)
92 #define XFS_BUF_UNBUSY(x) ((x)->pb_flags &= ~PBF_FORCEIO)
93 #define XFS_BUF_ISBUSY(x) (1)
95 #define XFS_BUF_ASYNC(x) ((x)->pb_flags |= PBF_ASYNC)
96 #define XFS_BUF_UNASYNC(x) ((x)->pb_flags &= ~PBF_ASYNC)
97 #define XFS_BUF_ISASYNC(x) ((x)->pb_flags & PBF_ASYNC)
99 #define XFS_BUF_FLUSH(x) ((x)->pb_flags |= PBF_FLUSH)
100 #define XFS_BUF_UNFLUSH(x) ((x)->pb_flags &= ~PBF_FLUSH)
101 #define XFS_BUF_ISFLUSH(x) ((x)->pb_flags & PBF_FLUSH)
103 #define XFS_BUF_SHUT(x) printk("XFS_BUF_SHUT not implemented yet\n")
104 #define XFS_BUF_UNSHUT(x) printk("XFS_BUF_UNSHUT not implemented yet\n")
105 #define XFS_BUF_ISSHUT(x) (0)
107 #define XFS_BUF_HOLD(x) pagebuf_hold(x)
108 #define XFS_BUF_READ(x) ((x)->pb_flags |= PBF_READ)
109 #define XFS_BUF_UNREAD(x) ((x)->pb_flags &= ~PBF_READ)
110 #define XFS_BUF_ISREAD(x) ((x)->pb_flags & PBF_READ)
112 #define XFS_BUF_WRITE(x) ((x)->pb_flags |= PBF_WRITE)
113 #define XFS_BUF_UNWRITE(x) ((x)->pb_flags &= ~PBF_WRITE)
114 #define XFS_BUF_ISWRITE(x) ((x)->pb_flags & PBF_WRITE)
116 #define XFS_BUF_ISUNINITIAL(x) (0)
117 #define XFS_BUF_UNUNINITIAL(x) (0)
119 #define XFS_BUF_BP_ISMAPPED(bp) 1
121 typedef struct page_buf_s xfs_buf_t;
122 #define xfs_buf page_buf_s
124 typedef struct pb_target xfs_buftarg_t;
125 #define xfs_buftarg pb_target
127 #define XFS_BUF_DATAIO(x) ((x)->pb_flags |= PBF_FS_DATAIOD)
128 #define XFS_BUF_UNDATAIO(x) ((x)->pb_flags &= ~PBF_FS_DATAIOD)
130 #define XFS_BUF_IODONE_FUNC(buf) (buf)->pb_iodone
131 #define XFS_BUF_SET_IODONE_FUNC(buf, func) \
132 (buf)->pb_iodone = (func)
133 #define XFS_BUF_CLR_IODONE_FUNC(buf) \
134 (buf)->pb_iodone = NULL
135 #define XFS_BUF_SET_BDSTRAT_FUNC(buf, func) \
136 (buf)->pb_strat = (func)
137 #define XFS_BUF_CLR_BDSTRAT_FUNC(buf) \
138 (buf)->pb_strat = NULL
140 #define XFS_BUF_FSPRIVATE(buf, type) \
141 ((type)(buf)->pb_fspriv)
142 #define XFS_BUF_SET_FSPRIVATE(buf, value) \
143 (buf)->pb_fspriv = (void *)(value)
144 #define XFS_BUF_FSPRIVATE2(buf, type) \
145 ((type)(buf)->pb_fspriv2)
146 #define XFS_BUF_SET_FSPRIVATE2(buf, value) \
147 (buf)->pb_fspriv2 = (void *)(value)
148 #define XFS_BUF_FSPRIVATE3(buf, type) \
149 ((type)(buf)->pb_fspriv3)
150 #define XFS_BUF_SET_FSPRIVATE3(buf, value) \
151 (buf)->pb_fspriv3 = (void *)(value)
152 #define XFS_BUF_SET_START(buf)
154 #define XFS_BUF_SET_BRELSE_FUNC(buf, value) \
155 (buf)->pb_relse = (value)
157 #define XFS_BUF_PTR(bp) (xfs_caddr_t)((bp)->pb_addr)
159 extern inline xfs_caddr_t xfs_buf_offset(page_buf_t *bp, size_t offset)
161 if (bp->pb_flags & PBF_MAPPED)
162 return XFS_BUF_PTR(bp) + offset;
163 return (xfs_caddr_t) pagebuf_offset(bp, offset);
166 #define XFS_BUF_SET_PTR(bp, val, count) \
167 pagebuf_associate_memory(bp, val, count)
168 #define XFS_BUF_ADDR(bp) ((bp)->pb_bn)
169 #define XFS_BUF_SET_ADDR(bp, blk) \
170 ((bp)->pb_bn = (page_buf_daddr_t)(blk))
171 #define XFS_BUF_OFFSET(bp) ((bp)->pb_file_offset)
172 #define XFS_BUF_SET_OFFSET(bp, off) \
173 ((bp)->pb_file_offset = (off))
174 #define XFS_BUF_COUNT(bp) ((bp)->pb_count_desired)
175 #define XFS_BUF_SET_COUNT(bp, cnt) \
176 ((bp)->pb_count_desired = (cnt))
177 #define XFS_BUF_SIZE(bp) ((bp)->pb_buffer_length)
178 #define XFS_BUF_SET_SIZE(bp, cnt) \
179 ((bp)->pb_buffer_length = (cnt))
180 #define XFS_BUF_SET_VTYPE_REF(bp, type, ref)
181 #define XFS_BUF_SET_VTYPE(bp, type)
182 #define XFS_BUF_SET_REF(bp, ref)
184 #define XFS_BUF_ISPINNED(bp) pagebuf_ispin(bp)
186 #define XFS_BUF_VALUSEMA(bp) pagebuf_lock_value(bp)
187 #define XFS_BUF_CPSEMA(bp) (pagebuf_cond_lock(bp) == 0)
188 #define XFS_BUF_VSEMA(bp) pagebuf_unlock(bp)
189 #define XFS_BUF_PSEMA(bp,x) pagebuf_lock(bp)
190 #define XFS_BUF_V_IODONESEMA(bp) up(&bp->pb_iodonesema);
192 /* setup the buffer target from a buftarg structure */
193 #define XFS_BUF_SET_TARGET(bp, target) \
194 (bp)->pb_target = (target)
196 #define XFS_BUF_TARGET(bp) ((bp)->pb_target)
197 #define XFS_BUF_TARGET_DEV(bp) ((bp)->pb_target->pbr_dev)
198 #define XFS_BUF_SET_VTYPE_REF(bp, type, ref)
199 #define XFS_BUF_SET_VTYPE(bp, type)
200 #define XFS_BUF_SET_REF(bp, ref)
202 #define xfs_buf_read(target, blkno, len, flags) \
203 pagebuf_get((target), (blkno), (len), \
204 PBF_LOCK | PBF_READ | PBF_MAPPED | PBF_MAPPABLE)
205 #define xfs_buf_get(target, blkno, len, flags) \
206 pagebuf_get((target), (blkno), (len), \
207 PBF_LOCK | PBF_MAPPED | PBF_MAPPABLE)
209 #define xfs_buf_read_flags(target, blkno, len, flags) \
210 pagebuf_get((target), (blkno), (len), \
211 PBF_READ | PBF_MAPPABLE | flags)
212 #define xfs_buf_get_flags(target, blkno, len, flags) \
213 pagebuf_get((target), (blkno), (len), \
214 PBF_MAPPABLE | flags)
216 static inline int xfs_bawrite(void *mp, page_buf_t *bp)
221 bp->pb_strat = xfs_bdstrat_cb;
223 if ((ret = pagebuf_iostart(bp, PBF_WRITE | PBF_ASYNC)) == 0)
224 pagebuf_run_queues(bp);
228 static inline void xfs_buf_relse(page_buf_t *bp)
230 if ((bp->pb_flags & _PBF_LOCKABLE) && !bp->pb_relse)
237 #define xfs_bpin(bp) pagebuf_pin(bp)
238 #define xfs_bunpin(bp) pagebuf_unpin(bp)
241 # define PB_DEFINE_TRACES
242 # include <pagebuf/page_buf_trace.h>
243 # define xfs_buftrace(id, bp) PB_TRACE(bp, PB_TRACE_REC(external), (void *)id)
245 # define xfs_buftrace(id, bp) do { } while (0)
249 #define xfs_biodone(pb) \
250 pagebuf_iodone(pb, (pb->pb_flags & PBF_FS_DATAIOD), 0)
252 #define xfs_incore(buftarg,blkno,len,lockit) \
253 pagebuf_find(buftarg, blkno ,len, lockit)
256 #define xfs_biomove(pb, off, len, data, rw) \
257 pagebuf_iomove((pb), (off), (len), (data), \
258 ((rw) == XFS_B_WRITE) ? PBRW_WRITE : PBRW_READ)
260 #define xfs_biozero(pb, off, len) \
261 pagebuf_iomove((pb), (off), (len), NULL, PBRW_ZERO)
264 static inline int XFS_bwrite(page_buf_t *pb)
266 int sync = (pb->pb_flags & PBF_ASYNC) == 0;
269 pb->pb_flags |= PBF_SYNC;
273 __pagebuf_iorequest(pb);
276 error = pagebuf_iowait(pb);
279 pagebuf_run_queues(pb);
286 #define XFS_bdwrite(pb) \
287 pagebuf_iostart(pb, PBF_DELWRI | PBF_ASYNC)
289 static inline int xfs_bdwrite(void *mp, page_buf_t *bp)
291 bp->pb_strat = xfs_bdstrat_cb;
294 return pagebuf_iostart(bp, PBF_DELWRI | PBF_ASYNC);
297 #define XFS_bdstrat(bp) pagebuf_iorequest(bp)
299 #define xfs_iowait(pb) pagebuf_iowait(pb)
303 * Go through all incore buffers, and release buffers
304 * if they belong to the given device. This is used in
305 * filesystem error handling to preserve the consistency
309 #define xfs_binval(buftarg) xfs_flush_buftarg(buftarg)
311 #define XFS_bflush(buftarg) xfs_flush_buftarg(buftarg)
313 #define xfs_incore_relse(buftarg,delwri_only,wait) \
314 xfs_relse_buftarg(buftarg)
316 #define xfs_baread(target, rablkno, ralen) \
317 pagebuf_readahead((target), (rablkno), (ralen), PBF_DONT_BLOCK)
319 #define XFS_getrbuf(sleep,mp) \
320 pagebuf_get_empty((mp)->m_ddev_targp)
321 #define XFS_ngetrbuf(len,mp) \
322 pagebuf_get_no_daddr(len,(mp)->m_ddev_targp)
323 #define XFS_freerbuf(bp) pagebuf_free(bp)
324 #define XFS_nfreerbuf(bp) pagebuf_free(bp)