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1da177e4 | 1 | /* |
7b718769 NS |
2 | * Copyright (c) 2000-2005 Silicon Graphics, Inc. |
3 | * All Rights Reserved. | |
1da177e4 | 4 | * |
7b718769 NS |
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 | |
1da177e4 LT |
7 | * published by the Free Software Foundation. |
8 | * | |
7b718769 NS |
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. | |
1da177e4 | 13 | * |
7b718769 NS |
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 | |
1da177e4 | 17 | */ |
1da177e4 LT |
18 | #ifndef __XFS_BUF_H__ |
19 | #define __XFS_BUF_H__ | |
20 | ||
1da177e4 LT |
21 | #include <linux/list.h> |
22 | #include <linux/types.h> | |
23 | #include <linux/spinlock.h> | |
24 | #include <asm/system.h> | |
25 | #include <linux/mm.h> | |
26 | #include <linux/fs.h> | |
27 | #include <linux/buffer_head.h> | |
28 | #include <linux/uio.h> | |
29 | ||
30 | /* | |
31 | * Base types | |
32 | */ | |
33 | ||
ce8e922c NS |
34 | #define XFS_BUF_DADDR_NULL ((xfs_daddr_t) (-1LL)) |
35 | ||
36 | #define xfs_buf_ctob(pp) ((pp) * PAGE_CACHE_SIZE) | |
37 | #define xfs_buf_btoc(dd) (((dd) + PAGE_CACHE_SIZE-1) >> PAGE_CACHE_SHIFT) | |
38 | #define xfs_buf_btoct(dd) ((dd) >> PAGE_CACHE_SHIFT) | |
39 | #define xfs_buf_poff(aa) ((aa) & ~PAGE_CACHE_MASK) | |
40 | ||
41 | typedef enum { | |
42 | XBRW_READ = 1, /* transfer into target memory */ | |
43 | XBRW_WRITE = 2, /* transfer from target memory */ | |
44 | XBRW_ZERO = 3, /* Zero target memory */ | |
45 | } xfs_buf_rw_t; | |
46 | ||
807cbbdb CH |
47 | #define XBF_READ (1 << 0) /* buffer intended for reading from device */ |
48 | #define XBF_WRITE (1 << 1) /* buffer intended for writing to device */ | |
49 | #define XBF_MAPPED (1 << 2) /* buffer mapped (b_addr valid) */ | |
50 | #define XBF_ASYNC (1 << 4) /* initiator will not wait for completion */ | |
51 | #define XBF_DONE (1 << 5) /* all pages in the buffer uptodate */ | |
52 | #define XBF_DELWRI (1 << 6) /* buffer has dirty pages */ | |
53 | #define XBF_STALE (1 << 7) /* buffer has been staled, do not find it */ | |
807cbbdb CH |
54 | #define XBF_ORDERED (1 << 11)/* use ordered writes */ |
55 | #define XBF_READ_AHEAD (1 << 12)/* asynchronous read-ahead */ | |
56 | #define XBF_LOG_BUFFER (1 << 13)/* this is a buffer used for the log */ | |
1da177e4 | 57 | |
807cbbdb CH |
58 | /* flags used only as arguments to access routines */ |
59 | #define XBF_LOCK (1 << 14)/* lock requested */ | |
60 | #define XBF_TRYLOCK (1 << 15)/* lock requested, but do not wait */ | |
61 | #define XBF_DONT_BLOCK (1 << 16)/* do not block in current thread */ | |
1da177e4 | 62 | |
807cbbdb | 63 | /* flags used only internally */ |
807cbbdb CH |
64 | #define _XBF_PAGES (1 << 18)/* backed by refcounted pages */ |
65 | #define _XBF_RUN_QUEUES (1 << 19)/* run block device task queue */ | |
0e6e847f | 66 | #define _XBF_KMEM (1 << 20)/* backed by heap memory */ |
807cbbdb | 67 | #define _XBF_DELWRI_Q (1 << 21)/* buffer on delwri queue */ |
6ab455ee | 68 | |
807cbbdb | 69 | typedef unsigned int xfs_buf_flags_t; |
1da177e4 | 70 | |
0b1b213f CH |
71 | #define XFS_BUF_FLAGS \ |
72 | { XBF_READ, "READ" }, \ | |
73 | { XBF_WRITE, "WRITE" }, \ | |
74 | { XBF_MAPPED, "MAPPED" }, \ | |
75 | { XBF_ASYNC, "ASYNC" }, \ | |
76 | { XBF_DONE, "DONE" }, \ | |
77 | { XBF_DELWRI, "DELWRI" }, \ | |
78 | { XBF_STALE, "STALE" }, \ | |
0b1b213f CH |
79 | { XBF_ORDERED, "ORDERED" }, \ |
80 | { XBF_READ_AHEAD, "READ_AHEAD" }, \ | |
81 | { XBF_LOCK, "LOCK" }, /* should never be set */\ | |
82 | { XBF_TRYLOCK, "TRYLOCK" }, /* ditto */\ | |
83 | { XBF_DONT_BLOCK, "DONT_BLOCK" }, /* ditto */\ | |
0b1b213f CH |
84 | { _XBF_PAGES, "PAGES" }, \ |
85 | { _XBF_RUN_QUEUES, "RUN_QUEUES" }, \ | |
0e6e847f DC |
86 | { _XBF_KMEM, "KMEM" }, \ |
87 | { _XBF_DELWRI_Q, "DELWRI_Q" } | |
0b1b213f | 88 | |
ce8e922c | 89 | typedef enum { |
5e6a07df DC |
90 | XBT_FORCE_SLEEP = 0, |
91 | XBT_FORCE_FLUSH = 1, | |
ce8e922c | 92 | } xfs_buftarg_flags_t; |
1da177e4 | 93 | |
1da177e4 | 94 | typedef struct xfs_buftarg { |
ce8e922c NS |
95 | dev_t bt_dev; |
96 | struct block_device *bt_bdev; | |
0e6e847f | 97 | struct backing_dev_info *bt_bdi; |
ebad861b | 98 | struct xfs_mount *bt_mount; |
ce8e922c NS |
99 | unsigned int bt_bsize; |
100 | unsigned int bt_sshift; | |
101 | size_t bt_smask; | |
102 | ||
a6867a68 DC |
103 | /* per device delwri queue */ |
104 | struct task_struct *bt_task; | |
a6867a68 DC |
105 | struct list_head bt_delwrite_queue; |
106 | spinlock_t bt_delwrite_lock; | |
ce8e922c | 107 | unsigned long bt_flags; |
ff57ab21 DC |
108 | |
109 | /* LRU control structures */ | |
110 | struct shrinker bt_shrinker; | |
430cbeb8 DC |
111 | struct list_head bt_lru; |
112 | spinlock_t bt_lru_lock; | |
113 | unsigned int bt_lru_nr; | |
1da177e4 LT |
114 | } xfs_buftarg_t; |
115 | ||
1da177e4 | 116 | struct xfs_buf; |
ce8e922c | 117 | typedef void (*xfs_buf_iodone_t)(struct xfs_buf *); |
1da177e4 | 118 | |
ce8e922c | 119 | #define XB_PAGES 2 |
1da177e4 LT |
120 | |
121 | typedef struct xfs_buf { | |
50f59e8e DC |
122 | /* |
123 | * first cacheline holds all the fields needed for an uncontended cache | |
124 | * hit to be fully processed. The semaphore straddles the cacheline | |
125 | * boundary, but the counter and lock sits on the first cacheline, | |
126 | * which is the only bit that is touched if we hit the semaphore | |
127 | * fast-path on locking. | |
128 | */ | |
129 | struct rb_node b_rbnode; /* rbtree node */ | |
130 | xfs_off_t b_file_offset; /* offset in file */ | |
131 | size_t b_buffer_length;/* size of buffer in bytes */ | |
132 | atomic_t b_hold; /* reference count */ | |
430cbeb8 | 133 | atomic_t b_lru_ref; /* lru reclaim ref count */ |
50f59e8e | 134 | xfs_buf_flags_t b_flags; /* status flags */ |
ce8e922c | 135 | struct semaphore b_sema; /* semaphore for lockables */ |
50f59e8e | 136 | |
430cbeb8 | 137 | struct list_head b_lru; /* lru list */ |
ce8e922c NS |
138 | wait_queue_head_t b_waiters; /* unpin waiters */ |
139 | struct list_head b_list; | |
74f75a0c | 140 | struct xfs_perag *b_pag; /* contains rbtree root */ |
ce8e922c | 141 | xfs_buftarg_t *b_target; /* buffer target (device) */ |
ce8e922c | 142 | xfs_daddr_t b_bn; /* block number for I/O */ |
ce8e922c NS |
143 | size_t b_count_desired;/* desired transfer size */ |
144 | void *b_addr; /* virtual address of buffer */ | |
145 | struct work_struct b_iodone_work; | |
ce8e922c | 146 | xfs_buf_iodone_t b_iodone; /* I/O completion function */ |
b4dd330b | 147 | struct completion b_iowait; /* queue for I/O waiters */ |
ce8e922c NS |
148 | void *b_fspriv; |
149 | void *b_fspriv2; | |
ce8e922c NS |
150 | struct page **b_pages; /* array of page pointers */ |
151 | struct page *b_page_array[XB_PAGES]; /* inline pages */ | |
50f59e8e DC |
152 | unsigned long b_queuetime; /* time buffer was queued */ |
153 | atomic_t b_pin_count; /* pin count */ | |
154 | atomic_t b_io_remaining; /* #outstanding I/O requests */ | |
155 | unsigned int b_page_count; /* size of page array */ | |
156 | unsigned int b_offset; /* page offset in first page */ | |
157 | unsigned short b_error; /* error code on I/O */ | |
ce8e922c NS |
158 | #ifdef XFS_BUF_LOCK_TRACKING |
159 | int b_last_holder; | |
1da177e4 LT |
160 | #endif |
161 | } xfs_buf_t; | |
162 | ||
163 | ||
164 | /* Finding and Reading Buffers */ | |
ce8e922c NS |
165 | extern xfs_buf_t *_xfs_buf_find(xfs_buftarg_t *, xfs_off_t, size_t, |
166 | xfs_buf_flags_t, xfs_buf_t *); | |
1da177e4 | 167 | #define xfs_incore(buftarg,blkno,len,lockit) \ |
ce8e922c | 168 | _xfs_buf_find(buftarg, blkno ,len, lockit, NULL) |
1da177e4 | 169 | |
6ad112bf | 170 | extern xfs_buf_t *xfs_buf_get(xfs_buftarg_t *, xfs_off_t, size_t, |
ce8e922c | 171 | xfs_buf_flags_t); |
6ad112bf | 172 | extern xfs_buf_t *xfs_buf_read(xfs_buftarg_t *, xfs_off_t, size_t, |
ce8e922c | 173 | xfs_buf_flags_t); |
1da177e4 | 174 | |
ce8e922c | 175 | extern xfs_buf_t *xfs_buf_get_empty(size_t, xfs_buftarg_t *); |
44396476 | 176 | extern void xfs_buf_set_empty(struct xfs_buf *bp, size_t len); |
686865f7 | 177 | extern xfs_buf_t *xfs_buf_get_uncached(struct xfs_buftarg *, size_t, int); |
ce8e922c NS |
178 | extern int xfs_buf_associate_memory(xfs_buf_t *, void *, size_t); |
179 | extern void xfs_buf_hold(xfs_buf_t *); | |
1a1a3e97 | 180 | extern void xfs_buf_readahead(xfs_buftarg_t *, xfs_off_t, size_t); |
5adc94c2 DC |
181 | struct xfs_buf *xfs_buf_read_uncached(struct xfs_mount *mp, |
182 | struct xfs_buftarg *target, | |
183 | xfs_daddr_t daddr, size_t length, int flags); | |
1da177e4 LT |
184 | |
185 | /* Releasing Buffers */ | |
ce8e922c NS |
186 | extern void xfs_buf_free(xfs_buf_t *); |
187 | extern void xfs_buf_rele(xfs_buf_t *); | |
1da177e4 LT |
188 | |
189 | /* Locking and Unlocking Buffers */ | |
ce8e922c NS |
190 | extern int xfs_buf_cond_lock(xfs_buf_t *); |
191 | extern int xfs_buf_lock_value(xfs_buf_t *); | |
192 | extern void xfs_buf_lock(xfs_buf_t *); | |
193 | extern void xfs_buf_unlock(xfs_buf_t *); | |
1da177e4 LT |
194 | |
195 | /* Buffer Read and Write Routines */ | |
64e0bc7d | 196 | extern int xfs_bwrite(struct xfs_mount *mp, struct xfs_buf *bp); |
5d765b97 | 197 | extern void xfs_bdwrite(void *mp, xfs_buf_t *bp); |
4e23471a CH |
198 | |
199 | extern void xfsbdstrat(struct xfs_mount *, struct xfs_buf *); | |
200 | extern int xfs_bdstrat_cb(struct xfs_buf *); | |
201 | ||
ce8e922c NS |
202 | extern void xfs_buf_ioend(xfs_buf_t *, int); |
203 | extern void xfs_buf_ioerror(xfs_buf_t *, int); | |
ce8e922c NS |
204 | extern int xfs_buf_iorequest(xfs_buf_t *); |
205 | extern int xfs_buf_iowait(xfs_buf_t *); | |
b9c48649 | 206 | extern void xfs_buf_iomove(xfs_buf_t *, size_t, size_t, void *, |
ce8e922c | 207 | xfs_buf_rw_t); |
1a1a3e97 CH |
208 | #define xfs_buf_zero(bp, off, len) \ |
209 | xfs_buf_iomove((bp), (off), (len), NULL, XBRW_ZERO) | |
ce8e922c | 210 | |
ce8e922c | 211 | static inline int xfs_buf_geterror(xfs_buf_t *bp) |
1da177e4 | 212 | { |
ce8e922c | 213 | return bp ? bp->b_error : ENOMEM; |
1da177e4 LT |
214 | } |
215 | ||
216 | /* Buffer Utility Routines */ | |
ce8e922c | 217 | extern xfs_caddr_t xfs_buf_offset(xfs_buf_t *, size_t); |
1da177e4 | 218 | |
1da177e4 | 219 | /* Delayed Write Buffer Routines */ |
ce8e922c | 220 | extern void xfs_buf_delwri_dequeue(xfs_buf_t *); |
d808f617 | 221 | extern void xfs_buf_delwri_promote(xfs_buf_t *); |
1da177e4 LT |
222 | |
223 | /* Buffer Daemon Setup Routines */ | |
ce8e922c NS |
224 | extern int xfs_buf_init(void); |
225 | extern void xfs_buf_terminate(void); | |
1da177e4 | 226 | |
ce8e922c NS |
227 | #define xfs_buf_target_name(target) \ |
228 | ({ char __b[BDEVNAME_SIZE]; bdevname((target)->bt_bdev, __b); __b; }) | |
1da177e4 LT |
229 | |
230 | ||
ce8e922c | 231 | #define XFS_BUF_BFLAGS(bp) ((bp)->b_flags) |
f5faad79 NS |
232 | #define XFS_BUF_ZEROFLAGS(bp) ((bp)->b_flags &= \ |
233 | ~(XBF_READ|XBF_WRITE|XBF_ASYNC|XBF_DELWRI|XBF_ORDERED)) | |
ce8e922c | 234 | |
430cbeb8 DC |
235 | void xfs_buf_stale(struct xfs_buf *bp); |
236 | #define XFS_BUF_STALE(bp) xfs_buf_stale(bp); | |
0cadda1c CH |
237 | #define XFS_BUF_UNSTALE(bp) ((bp)->b_flags &= ~XBF_STALE) |
238 | #define XFS_BUF_ISSTALE(bp) ((bp)->b_flags & XBF_STALE) | |
ce8e922c NS |
239 | #define XFS_BUF_SUPER_STALE(bp) do { \ |
240 | XFS_BUF_STALE(bp); \ | |
241 | xfs_buf_delwri_dequeue(bp); \ | |
242 | XFS_BUF_DONE(bp); \ | |
243 | } while (0) | |
1da177e4 | 244 | |
ce8e922c NS |
245 | #define XFS_BUF_DELAYWRITE(bp) ((bp)->b_flags |= XBF_DELWRI) |
246 | #define XFS_BUF_UNDELAYWRITE(bp) xfs_buf_delwri_dequeue(bp) | |
247 | #define XFS_BUF_ISDELAYWRITE(bp) ((bp)->b_flags & XBF_DELWRI) | |
248 | ||
249 | #define XFS_BUF_ERROR(bp,no) xfs_buf_ioerror(bp,no) | |
250 | #define XFS_BUF_GETERROR(bp) xfs_buf_geterror(bp) | |
251 | #define XFS_BUF_ISERROR(bp) (xfs_buf_geterror(bp) ? 1 : 0) | |
252 | ||
253 | #define XFS_BUF_DONE(bp) ((bp)->b_flags |= XBF_DONE) | |
254 | #define XFS_BUF_UNDONE(bp) ((bp)->b_flags &= ~XBF_DONE) | |
255 | #define XFS_BUF_ISDONE(bp) ((bp)->b_flags & XBF_DONE) | |
256 | ||
257 | #define XFS_BUF_BUSY(bp) do { } while (0) | |
258 | #define XFS_BUF_UNBUSY(bp) do { } while (0) | |
259 | #define XFS_BUF_ISBUSY(bp) (1) | |
260 | ||
261 | #define XFS_BUF_ASYNC(bp) ((bp)->b_flags |= XBF_ASYNC) | |
262 | #define XFS_BUF_UNASYNC(bp) ((bp)->b_flags &= ~XBF_ASYNC) | |
263 | #define XFS_BUF_ISASYNC(bp) ((bp)->b_flags & XBF_ASYNC) | |
264 | ||
265 | #define XFS_BUF_ORDERED(bp) ((bp)->b_flags |= XBF_ORDERED) | |
266 | #define XFS_BUF_UNORDERED(bp) ((bp)->b_flags &= ~XBF_ORDERED) | |
267 | #define XFS_BUF_ISORDERED(bp) ((bp)->b_flags & XBF_ORDERED) | |
ce8e922c NS |
268 | |
269 | #define XFS_BUF_HOLD(bp) xfs_buf_hold(bp) | |
270 | #define XFS_BUF_READ(bp) ((bp)->b_flags |= XBF_READ) | |
271 | #define XFS_BUF_UNREAD(bp) ((bp)->b_flags &= ~XBF_READ) | |
272 | #define XFS_BUF_ISREAD(bp) ((bp)->b_flags & XBF_READ) | |
273 | ||
274 | #define XFS_BUF_WRITE(bp) ((bp)->b_flags |= XBF_WRITE) | |
275 | #define XFS_BUF_UNWRITE(bp) ((bp)->b_flags &= ~XBF_WRITE) | |
276 | #define XFS_BUF_ISWRITE(bp) ((bp)->b_flags & XBF_WRITE) | |
277 | ||
ce8e922c NS |
278 | #define XFS_BUF_IODONE_FUNC(bp) ((bp)->b_iodone) |
279 | #define XFS_BUF_SET_IODONE_FUNC(bp, func) ((bp)->b_iodone = (func)) | |
280 | #define XFS_BUF_CLR_IODONE_FUNC(bp) ((bp)->b_iodone = NULL) | |
ce8e922c NS |
281 | |
282 | #define XFS_BUF_FSPRIVATE(bp, type) ((type)(bp)->b_fspriv) | |
283 | #define XFS_BUF_SET_FSPRIVATE(bp, val) ((bp)->b_fspriv = (void*)(val)) | |
284 | #define XFS_BUF_FSPRIVATE2(bp, type) ((type)(bp)->b_fspriv2) | |
285 | #define XFS_BUF_SET_FSPRIVATE2(bp, val) ((bp)->b_fspriv2 = (void*)(val)) | |
ce8e922c | 286 | #define XFS_BUF_SET_START(bp) do { } while (0) |
ce8e922c NS |
287 | |
288 | #define XFS_BUF_PTR(bp) (xfs_caddr_t)((bp)->b_addr) | |
289 | #define XFS_BUF_SET_PTR(bp, val, cnt) xfs_buf_associate_memory(bp, val, cnt) | |
290 | #define XFS_BUF_ADDR(bp) ((bp)->b_bn) | |
291 | #define XFS_BUF_SET_ADDR(bp, bno) ((bp)->b_bn = (xfs_daddr_t)(bno)) | |
292 | #define XFS_BUF_OFFSET(bp) ((bp)->b_file_offset) | |
293 | #define XFS_BUF_SET_OFFSET(bp, off) ((bp)->b_file_offset = (off)) | |
294 | #define XFS_BUF_COUNT(bp) ((bp)->b_count_desired) | |
295 | #define XFS_BUF_SET_COUNT(bp, cnt) ((bp)->b_count_desired = (cnt)) | |
296 | #define XFS_BUF_SIZE(bp) ((bp)->b_buffer_length) | |
297 | #define XFS_BUF_SET_SIZE(bp, cnt) ((bp)->b_buffer_length = (cnt)) | |
298 | ||
821eb21d DC |
299 | static inline void |
300 | xfs_buf_set_ref( | |
301 | struct xfs_buf *bp, | |
302 | int lru_ref) | |
303 | { | |
304 | atomic_set(&bp->b_lru_ref, lru_ref); | |
305 | } | |
306 | #define XFS_BUF_SET_VTYPE_REF(bp, type, ref) xfs_buf_set_ref(bp, ref) | |
ce8e922c | 307 | #define XFS_BUF_SET_VTYPE(bp, type) do { } while (0) |
ce8e922c | 308 | |
4d16e924 | 309 | #define XFS_BUF_ISPINNED(bp) atomic_read(&((bp)->b_pin_count)) |
ce8e922c NS |
310 | |
311 | #define XFS_BUF_VALUSEMA(bp) xfs_buf_lock_value(bp) | |
312 | #define XFS_BUF_CPSEMA(bp) (xfs_buf_cond_lock(bp) == 0) | |
313 | #define XFS_BUF_VSEMA(bp) xfs_buf_unlock(bp) | |
314 | #define XFS_BUF_PSEMA(bp,x) xfs_buf_lock(bp) | |
b4dd330b | 315 | #define XFS_BUF_FINISH_IOWAIT(bp) complete(&bp->b_iowait); |
ce8e922c NS |
316 | |
317 | #define XFS_BUF_SET_TARGET(bp, target) ((bp)->b_target = (target)) | |
318 | #define XFS_BUF_TARGET(bp) ((bp)->b_target) | |
319 | #define XFS_BUFTARG_NAME(target) xfs_buf_target_name(target) | |
320 | ||
ce8e922c | 321 | static inline void xfs_buf_relse(xfs_buf_t *bp) |
1da177e4 | 322 | { |
bfc60177 | 323 | xfs_buf_unlock(bp); |
ce8e922c | 324 | xfs_buf_rele(bp); |
1da177e4 LT |
325 | } |
326 | ||
1da177e4 LT |
327 | /* |
328 | * Handling of buftargs. | |
329 | */ | |
ebad861b DC |
330 | extern xfs_buftarg_t *xfs_alloc_buftarg(struct xfs_mount *, |
331 | struct block_device *, int, const char *); | |
c141b292 | 332 | extern void xfs_free_buftarg(struct xfs_mount *, struct xfs_buftarg *); |
1da177e4 LT |
333 | extern void xfs_wait_buftarg(xfs_buftarg_t *); |
334 | extern int xfs_setsize_buftarg(xfs_buftarg_t *, unsigned int, unsigned int); | |
1da177e4 | 335 | extern int xfs_flush_buftarg(xfs_buftarg_t *, int); |
d808f617 | 336 | |
e6a0e9cd TS |
337 | #ifdef CONFIG_KDB_MODULES |
338 | extern struct list_head *xfs_get_buftarg_list(void); | |
339 | #endif | |
1da177e4 | 340 | |
ce8e922c NS |
341 | #define xfs_getsize_buftarg(buftarg) block_size((buftarg)->bt_bdev) |
342 | #define xfs_readonly_buftarg(buftarg) bdev_read_only((buftarg)->bt_bdev) | |
343 | ||
344 | #define xfs_binval(buftarg) xfs_flush_buftarg(buftarg, 1) | |
345 | #define XFS_bflush(buftarg) xfs_flush_buftarg(buftarg, 1) | |
1da177e4 LT |
346 | |
347 | #endif /* __XFS_BUF_H__ */ |