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Commit 6d4a8ecb344bddbbb8c71deb4dcea0be6955cfc3

Authored by Dave Chinner
Committed by Dave Chinner
1 parent 5348778699
Exists in master and in 7 other branches imx_3.0.35_4.1.0, imx_3.10.17_1.0.1_ga, imx_3.10.53_1.1.0_ga, imx_3.14.28_1.0.0_ga, smarc-imx_3.10.53_1.1.0_ga, smarc-imx_3.14.28_1.0.0_ga, smarc-l5.0.0_1.0.0-ga

xfs: rename xfs_cmn_err_fsblock_zero() 

The "cmn_err" part of the function name is no longer relevant. Rename
the function to xfs_alert_fsblock_zero() to match the new logging
API.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Alex Elder <aelder@sgi.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>

Showing 1 changed file with 5 additions and 5 deletions Inline Diff

1 /* 1 /*
2 * Copyright (c) 2000-2006 Silicon Graphics, Inc. 2 * Copyright (c) 2000-2006 Silicon Graphics, Inc.
3 * All Rights Reserved. 3 * All Rights Reserved.
4 * 4 *
5 * This program is free software; you can redistribute it and/or 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 6 * modify it under the terms of the GNU General Public License as
7 * published by the Free Software Foundation. 7 * published by the Free Software Foundation.
8 * 8 *
9 * This program is distributed in the hope that it would be useful, 9 * This program is distributed in the hope that it would be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details. 12 * GNU General Public License for more details.
13 * 13 *
14 * You should have received a copy of the GNU General Public License 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, 15 * along with this program; if not, write the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
17 */ 17 */
18 #include "xfs.h" 18 #include "xfs.h"
19 #include "xfs_fs.h" 19 #include "xfs_fs.h"
20 #include "xfs_bit.h" 20 #include "xfs_bit.h"
21 #include "xfs_log.h" 21 #include "xfs_log.h"
22 #include "xfs_inum.h" 22 #include "xfs_inum.h"
23 #include "xfs_trans.h" 23 #include "xfs_trans.h"
24 #include "xfs_sb.h" 24 #include "xfs_sb.h"
25 #include "xfs_ag.h" 25 #include "xfs_ag.h"
26 #include "xfs_alloc.h" 26 #include "xfs_alloc.h"
27 #include "xfs_quota.h" 27 #include "xfs_quota.h"
28 #include "xfs_mount.h" 28 #include "xfs_mount.h"
29 #include "xfs_bmap_btree.h" 29 #include "xfs_bmap_btree.h"
30 #include "xfs_alloc_btree.h" 30 #include "xfs_alloc_btree.h"
31 #include "xfs_ialloc_btree.h" 31 #include "xfs_ialloc_btree.h"
32 #include "xfs_dinode.h" 32 #include "xfs_dinode.h"
33 #include "xfs_inode.h" 33 #include "xfs_inode.h"
34 #include "xfs_btree.h" 34 #include "xfs_btree.h"
35 #include "xfs_bmap.h" 35 #include "xfs_bmap.h"
36 #include "xfs_rtalloc.h" 36 #include "xfs_rtalloc.h"
37 #include "xfs_error.h" 37 #include "xfs_error.h"
38 #include "xfs_itable.h" 38 #include "xfs_itable.h"
39 #include "xfs_rw.h" 39 #include "xfs_rw.h"
40 #include "xfs_attr.h" 40 #include "xfs_attr.h"
41 #include "xfs_buf_item.h" 41 #include "xfs_buf_item.h"
42 #include "xfs_trans_space.h" 42 #include "xfs_trans_space.h"
43 #include "xfs_utils.h" 43 #include "xfs_utils.h"
44 #include "xfs_iomap.h" 44 #include "xfs_iomap.h"
45 #include "xfs_trace.h" 45 #include "xfs_trace.h"
46 46
47 47
48 #define XFS_WRITEIO_ALIGN(mp,off) (((off) >> mp->m_writeio_log) \ 48 #define XFS_WRITEIO_ALIGN(mp,off) (((off) >> mp->m_writeio_log) \
49 << mp->m_writeio_log) 49 << mp->m_writeio_log)
50 #define XFS_WRITE_IMAPS XFS_BMAP_MAX_NMAP 50 #define XFS_WRITE_IMAPS XFS_BMAP_MAX_NMAP
51 51
52 STATIC int 52 STATIC int
53 xfs_iomap_eof_align_last_fsb( 53 xfs_iomap_eof_align_last_fsb(
54 xfs_mount_t *mp, 54 xfs_mount_t *mp,
55 xfs_inode_t *ip, 55 xfs_inode_t *ip,
56 xfs_extlen_t extsize, 56 xfs_extlen_t extsize,
57 xfs_fileoff_t *last_fsb) 57 xfs_fileoff_t *last_fsb)
58 { 58 {
59 xfs_fileoff_t new_last_fsb = 0; 59 xfs_fileoff_t new_last_fsb = 0;
60 xfs_extlen_t align; 60 xfs_extlen_t align;
61 int eof, error; 61 int eof, error;
62 62
63 if (XFS_IS_REALTIME_INODE(ip)) 63 if (XFS_IS_REALTIME_INODE(ip))
64 ; 64 ;
65 /* 65 /*
66 * If mounted with the "-o swalloc" option, roundup the allocation 66 * If mounted with the "-o swalloc" option, roundup the allocation
67 * request to a stripe width boundary if the file size is >= 67 * request to a stripe width boundary if the file size is >=
68 * stripe width and we are allocating past the allocation eof. 68 * stripe width and we are allocating past the allocation eof.
69 */ 69 */
70 else if (mp->m_swidth && (mp->m_flags & XFS_MOUNT_SWALLOC) && 70 else if (mp->m_swidth && (mp->m_flags & XFS_MOUNT_SWALLOC) &&
71 (ip->i_size >= XFS_FSB_TO_B(mp, mp->m_swidth))) 71 (ip->i_size >= XFS_FSB_TO_B(mp, mp->m_swidth)))
72 new_last_fsb = roundup_64(*last_fsb, mp->m_swidth); 72 new_last_fsb = roundup_64(*last_fsb, mp->m_swidth);
73 /* 73 /*
74 * Roundup the allocation request to a stripe unit (m_dalign) boundary 74 * Roundup the allocation request to a stripe unit (m_dalign) boundary
75 * if the file size is >= stripe unit size, and we are allocating past 75 * if the file size is >= stripe unit size, and we are allocating past
76 * the allocation eof. 76 * the allocation eof.
77 */ 77 */
78 else if (mp->m_dalign && (ip->i_size >= XFS_FSB_TO_B(mp, mp->m_dalign))) 78 else if (mp->m_dalign && (ip->i_size >= XFS_FSB_TO_B(mp, mp->m_dalign)))
79 new_last_fsb = roundup_64(*last_fsb, mp->m_dalign); 79 new_last_fsb = roundup_64(*last_fsb, mp->m_dalign);
80 80
81 /* 81 /*
82 * Always round up the allocation request to an extent boundary 82 * Always round up the allocation request to an extent boundary
83 * (when file on a real-time subvolume or has di_extsize hint). 83 * (when file on a real-time subvolume or has di_extsize hint).
84 */ 84 */
85 if (extsize) { 85 if (extsize) {
86 if (new_last_fsb) 86 if (new_last_fsb)
87 align = roundup_64(new_last_fsb, extsize); 87 align = roundup_64(new_last_fsb, extsize);
88 else 88 else
89 align = extsize; 89 align = extsize;
90 new_last_fsb = roundup_64(*last_fsb, align); 90 new_last_fsb = roundup_64(*last_fsb, align);
91 } 91 }
92 92
93 if (new_last_fsb) { 93 if (new_last_fsb) {
94 error = xfs_bmap_eof(ip, new_last_fsb, XFS_DATA_FORK, &eof); 94 error = xfs_bmap_eof(ip, new_last_fsb, XFS_DATA_FORK, &eof);
95 if (error) 95 if (error)
96 return error; 96 return error;
97 if (eof) 97 if (eof)
98 *last_fsb = new_last_fsb; 98 *last_fsb = new_last_fsb;
99 } 99 }
100 return 0; 100 return 0;
101 } 101 }
102 102
103 STATIC int 103 STATIC int
104 xfs_cmn_err_fsblock_zero( 104 xfs_alert_fsblock_zero(
105 xfs_inode_t *ip, 105 xfs_inode_t *ip,
106 xfs_bmbt_irec_t *imap) 106 xfs_bmbt_irec_t *imap)
107 { 107 {
108 xfs_alert_tag(ip->i_mount, XFS_PTAG_FSBLOCK_ZERO, 108 xfs_alert_tag(ip->i_mount, XFS_PTAG_FSBLOCK_ZERO,
109 "Access to block zero in inode %llu " 109 "Access to block zero in inode %llu "
110 "start_block: %llx start_off: %llx " 110 "start_block: %llx start_off: %llx "
111 "blkcnt: %llx extent-state: %x\n", 111 "blkcnt: %llx extent-state: %x\n",
112 (unsigned long long)ip->i_ino, 112 (unsigned long long)ip->i_ino,
113 (unsigned long long)imap->br_startblock, 113 (unsigned long long)imap->br_startblock,
114 (unsigned long long)imap->br_startoff, 114 (unsigned long long)imap->br_startoff,
115 (unsigned long long)imap->br_blockcount, 115 (unsigned long long)imap->br_blockcount,
116 imap->br_state); 116 imap->br_state);
117 return EFSCORRUPTED; 117 return EFSCORRUPTED;
118 } 118 }
119 119
120 int 120 int
121 xfs_iomap_write_direct( 121 xfs_iomap_write_direct(
122 xfs_inode_t *ip, 122 xfs_inode_t *ip,
123 xfs_off_t offset, 123 xfs_off_t offset,
124 size_t count, 124 size_t count,
125 xfs_bmbt_irec_t *imap, 125 xfs_bmbt_irec_t *imap,
126 int nmaps) 126 int nmaps)
127 { 127 {
128 xfs_mount_t *mp = ip->i_mount; 128 xfs_mount_t *mp = ip->i_mount;
129 xfs_fileoff_t offset_fsb; 129 xfs_fileoff_t offset_fsb;
130 xfs_fileoff_t last_fsb; 130 xfs_fileoff_t last_fsb;
131 xfs_filblks_t count_fsb, resaligned; 131 xfs_filblks_t count_fsb, resaligned;
132 xfs_fsblock_t firstfsb; 132 xfs_fsblock_t firstfsb;
133 xfs_extlen_t extsz, temp; 133 xfs_extlen_t extsz, temp;
134 int nimaps; 134 int nimaps;
135 int bmapi_flag; 135 int bmapi_flag;
136 int quota_flag; 136 int quota_flag;
137 int rt; 137 int rt;
138 xfs_trans_t *tp; 138 xfs_trans_t *tp;
139 xfs_bmap_free_t free_list; 139 xfs_bmap_free_t free_list;
140 uint qblocks, resblks, resrtextents; 140 uint qblocks, resblks, resrtextents;
141 int committed; 141 int committed;
142 int error; 142 int error;
143 143
144 /* 144 /*
145 * Make sure that the dquots are there. This doesn't hold 145 * Make sure that the dquots are there. This doesn't hold
146 * the ilock across a disk read. 146 * the ilock across a disk read.
147 */ 147 */
148 error = xfs_qm_dqattach_locked(ip, 0); 148 error = xfs_qm_dqattach_locked(ip, 0);
149 if (error) 149 if (error)
150 return XFS_ERROR(error); 150 return XFS_ERROR(error);
151 151
152 rt = XFS_IS_REALTIME_INODE(ip); 152 rt = XFS_IS_REALTIME_INODE(ip);
153 extsz = xfs_get_extsz_hint(ip); 153 extsz = xfs_get_extsz_hint(ip);
154 154
155 offset_fsb = XFS_B_TO_FSBT(mp, offset); 155 offset_fsb = XFS_B_TO_FSBT(mp, offset);
156 last_fsb = XFS_B_TO_FSB(mp, ((xfs_ufsize_t)(offset + count))); 156 last_fsb = XFS_B_TO_FSB(mp, ((xfs_ufsize_t)(offset + count)));
157 if ((offset + count) > ip->i_size) { 157 if ((offset + count) > ip->i_size) {
158 error = xfs_iomap_eof_align_last_fsb(mp, ip, extsz, &last_fsb); 158 error = xfs_iomap_eof_align_last_fsb(mp, ip, extsz, &last_fsb);
159 if (error) 159 if (error)
160 goto error_out; 160 goto error_out;
161 } else { 161 } else {
162 if (nmaps && (imap->br_startblock == HOLESTARTBLOCK)) 162 if (nmaps && (imap->br_startblock == HOLESTARTBLOCK))
163 last_fsb = MIN(last_fsb, (xfs_fileoff_t) 163 last_fsb = MIN(last_fsb, (xfs_fileoff_t)
164 imap->br_blockcount + 164 imap->br_blockcount +
165 imap->br_startoff); 165 imap->br_startoff);
166 } 166 }
167 count_fsb = last_fsb - offset_fsb; 167 count_fsb = last_fsb - offset_fsb;
168 ASSERT(count_fsb > 0); 168 ASSERT(count_fsb > 0);
169 169
170 resaligned = count_fsb; 170 resaligned = count_fsb;
171 if (unlikely(extsz)) { 171 if (unlikely(extsz)) {
172 if ((temp = do_mod(offset_fsb, extsz))) 172 if ((temp = do_mod(offset_fsb, extsz)))
173 resaligned += temp; 173 resaligned += temp;
174 if ((temp = do_mod(resaligned, extsz))) 174 if ((temp = do_mod(resaligned, extsz)))
175 resaligned += extsz - temp; 175 resaligned += extsz - temp;
176 } 176 }
177 177
178 if (unlikely(rt)) { 178 if (unlikely(rt)) {
179 resrtextents = qblocks = resaligned; 179 resrtextents = qblocks = resaligned;
180 resrtextents /= mp->m_sb.sb_rextsize; 180 resrtextents /= mp->m_sb.sb_rextsize;
181 resblks = XFS_DIOSTRAT_SPACE_RES(mp, 0); 181 resblks = XFS_DIOSTRAT_SPACE_RES(mp, 0);
182 quota_flag = XFS_QMOPT_RES_RTBLKS; 182 quota_flag = XFS_QMOPT_RES_RTBLKS;
183 } else { 183 } else {
184 resrtextents = 0; 184 resrtextents = 0;
185 resblks = qblocks = XFS_DIOSTRAT_SPACE_RES(mp, resaligned); 185 resblks = qblocks = XFS_DIOSTRAT_SPACE_RES(mp, resaligned);
186 quota_flag = XFS_QMOPT_RES_REGBLKS; 186 quota_flag = XFS_QMOPT_RES_REGBLKS;
187 } 187 }
188 188
189 /* 189 /*
190 * Allocate and setup the transaction 190 * Allocate and setup the transaction
191 */ 191 */
192 xfs_iunlock(ip, XFS_ILOCK_EXCL); 192 xfs_iunlock(ip, XFS_ILOCK_EXCL);
193 tp = xfs_trans_alloc(mp, XFS_TRANS_DIOSTRAT); 193 tp = xfs_trans_alloc(mp, XFS_TRANS_DIOSTRAT);
194 error = xfs_trans_reserve(tp, resblks, 194 error = xfs_trans_reserve(tp, resblks,
195 XFS_WRITE_LOG_RES(mp), resrtextents, 195 XFS_WRITE_LOG_RES(mp), resrtextents,
196 XFS_TRANS_PERM_LOG_RES, 196 XFS_TRANS_PERM_LOG_RES,
197 XFS_WRITE_LOG_COUNT); 197 XFS_WRITE_LOG_COUNT);
198 /* 198 /*
199 * Check for running out of space, note: need lock to return 199 * Check for running out of space, note: need lock to return
200 */ 200 */
201 if (error) 201 if (error)
202 xfs_trans_cancel(tp, 0); 202 xfs_trans_cancel(tp, 0);
203 xfs_ilock(ip, XFS_ILOCK_EXCL); 203 xfs_ilock(ip, XFS_ILOCK_EXCL);
204 if (error) 204 if (error)
205 goto error_out; 205 goto error_out;
206 206
207 error = xfs_trans_reserve_quota_nblks(tp, ip, qblocks, 0, quota_flag); 207 error = xfs_trans_reserve_quota_nblks(tp, ip, qblocks, 0, quota_flag);
208 if (error) 208 if (error)
209 goto error1; 209 goto error1;
210 210
211 xfs_trans_ijoin(tp, ip); 211 xfs_trans_ijoin(tp, ip);
212 212
213 bmapi_flag = XFS_BMAPI_WRITE; 213 bmapi_flag = XFS_BMAPI_WRITE;
214 if (offset < ip->i_size || extsz) 214 if (offset < ip->i_size || extsz)
215 bmapi_flag |= XFS_BMAPI_PREALLOC; 215 bmapi_flag |= XFS_BMAPI_PREALLOC;
216 216
217 /* 217 /*
218 * Issue the xfs_bmapi() call to allocate the blocks. 218 * Issue the xfs_bmapi() call to allocate the blocks.
219 * 219 *
220 * From this point onwards we overwrite the imap pointer that the 220 * From this point onwards we overwrite the imap pointer that the
221 * caller gave to us. 221 * caller gave to us.
222 */ 222 */
223 xfs_bmap_init(&free_list, &firstfsb); 223 xfs_bmap_init(&free_list, &firstfsb);
224 nimaps = 1; 224 nimaps = 1;
225 error = xfs_bmapi(tp, ip, offset_fsb, count_fsb, bmapi_flag, 225 error = xfs_bmapi(tp, ip, offset_fsb, count_fsb, bmapi_flag,
226 &firstfsb, 0, imap, &nimaps, &free_list); 226 &firstfsb, 0, imap, &nimaps, &free_list);
227 if (error) 227 if (error)
228 goto error0; 228 goto error0;
229 229
230 /* 230 /*
231 * Complete the transaction 231 * Complete the transaction
232 */ 232 */
233 error = xfs_bmap_finish(&tp, &free_list, &committed); 233 error = xfs_bmap_finish(&tp, &free_list, &committed);
234 if (error) 234 if (error)
235 goto error0; 235 goto error0;
236 error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES); 236 error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES);
237 if (error) 237 if (error)
238 goto error_out; 238 goto error_out;
239 239
240 /* 240 /*
241 * Copy any maps to caller's array and return any error. 241 * Copy any maps to caller's array and return any error.
242 */ 242 */
243 if (nimaps == 0) { 243 if (nimaps == 0) {
244 error = ENOSPC; 244 error = ENOSPC;
245 goto error_out; 245 goto error_out;
246 } 246 }
247 247
248 if (!(imap->br_startblock || XFS_IS_REALTIME_INODE(ip))) { 248 if (!(imap->br_startblock || XFS_IS_REALTIME_INODE(ip))) {
249 error = xfs_cmn_err_fsblock_zero(ip, imap); 249 error = xfs_alert_fsblock_zero(ip, imap);
250 goto error_out; 250 goto error_out;
251 } 251 }
252 252
253 return 0; 253 return 0;
254 254
255 error0: /* Cancel bmap, unlock inode, unreserve quota blocks, cancel trans */ 255 error0: /* Cancel bmap, unlock inode, unreserve quota blocks, cancel trans */
256 xfs_bmap_cancel(&free_list); 256 xfs_bmap_cancel(&free_list);
257 xfs_trans_unreserve_quota_nblks(tp, ip, qblocks, 0, quota_flag); 257 xfs_trans_unreserve_quota_nblks(tp, ip, qblocks, 0, quota_flag);
258 258
259 error1: /* Just cancel transaction */ 259 error1: /* Just cancel transaction */
260 xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES | XFS_TRANS_ABORT); 260 xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES | XFS_TRANS_ABORT);
261 261
262 error_out: 262 error_out:
263 return XFS_ERROR(error); 263 return XFS_ERROR(error);
264 } 264 }
265 265
266 /* 266 /*
267 * If the caller is doing a write at the end of the file, then extend the 267 * If the caller is doing a write at the end of the file, then extend the
268 * allocation out to the file system's write iosize. We clean up any extra 268 * allocation out to the file system's write iosize. We clean up any extra
269 * space left over when the file is closed in xfs_inactive(). 269 * space left over when the file is closed in xfs_inactive().
270 * 270 *
271 * If we find we already have delalloc preallocation beyond EOF, don't do more 271 * If we find we already have delalloc preallocation beyond EOF, don't do more
272 * preallocation as it it not needed. 272 * preallocation as it it not needed.
273 */ 273 */
274 STATIC int 274 STATIC int
275 xfs_iomap_eof_want_preallocate( 275 xfs_iomap_eof_want_preallocate(
276 xfs_mount_t *mp, 276 xfs_mount_t *mp,
277 xfs_inode_t *ip, 277 xfs_inode_t *ip,
278 xfs_off_t offset, 278 xfs_off_t offset,
279 size_t count, 279 size_t count,
280 xfs_bmbt_irec_t *imap, 280 xfs_bmbt_irec_t *imap,
281 int nimaps, 281 int nimaps,
282 int *prealloc) 282 int *prealloc)
283 { 283 {
284 xfs_fileoff_t start_fsb; 284 xfs_fileoff_t start_fsb;
285 xfs_filblks_t count_fsb; 285 xfs_filblks_t count_fsb;
286 xfs_fsblock_t firstblock; 286 xfs_fsblock_t firstblock;
287 int n, error, imaps; 287 int n, error, imaps;
288 int found_delalloc = 0; 288 int found_delalloc = 0;
289 289
290 *prealloc = 0; 290 *prealloc = 0;
291 if ((offset + count) <= ip->i_size) 291 if ((offset + count) <= ip->i_size)
292 return 0; 292 return 0;
293 293
294 /* 294 /*
295 * If there are any real blocks past eof, then don't 295 * If there are any real blocks past eof, then don't
296 * do any speculative allocation. 296 * do any speculative allocation.
297 */ 297 */
298 start_fsb = XFS_B_TO_FSBT(mp, ((xfs_ufsize_t)(offset + count - 1))); 298 start_fsb = XFS_B_TO_FSBT(mp, ((xfs_ufsize_t)(offset + count - 1)));
299 count_fsb = XFS_B_TO_FSB(mp, (xfs_ufsize_t)XFS_MAXIOFFSET(mp)); 299 count_fsb = XFS_B_TO_FSB(mp, (xfs_ufsize_t)XFS_MAXIOFFSET(mp));
300 while (count_fsb > 0) { 300 while (count_fsb > 0) {
301 imaps = nimaps; 301 imaps = nimaps;
302 firstblock = NULLFSBLOCK; 302 firstblock = NULLFSBLOCK;
303 error = xfs_bmapi(NULL, ip, start_fsb, count_fsb, 0, 303 error = xfs_bmapi(NULL, ip, start_fsb, count_fsb, 0,
304 &firstblock, 0, imap, &imaps, NULL); 304 &firstblock, 0, imap, &imaps, NULL);
305 if (error) 305 if (error)
306 return error; 306 return error;
307 for (n = 0; n < imaps; n++) { 307 for (n = 0; n < imaps; n++) {
308 if ((imap[n].br_startblock != HOLESTARTBLOCK) && 308 if ((imap[n].br_startblock != HOLESTARTBLOCK) &&
309 (imap[n].br_startblock != DELAYSTARTBLOCK)) 309 (imap[n].br_startblock != DELAYSTARTBLOCK))
310 return 0; 310 return 0;
311 start_fsb += imap[n].br_blockcount; 311 start_fsb += imap[n].br_blockcount;
312 count_fsb -= imap[n].br_blockcount; 312 count_fsb -= imap[n].br_blockcount;
313 313
314 if (imap[n].br_startblock == DELAYSTARTBLOCK) 314 if (imap[n].br_startblock == DELAYSTARTBLOCK)
315 found_delalloc = 1; 315 found_delalloc = 1;
316 } 316 }
317 } 317 }
318 if (!found_delalloc) 318 if (!found_delalloc)
319 *prealloc = 1; 319 *prealloc = 1;
320 return 0; 320 return 0;
321 } 321 }
322 322
323 /* 323 /*
324 * If we don't have a user specified preallocation size, dynamically increase 324 * If we don't have a user specified preallocation size, dynamically increase
325 * the preallocation size as the size of the file grows. Cap the maximum size 325 * the preallocation size as the size of the file grows. Cap the maximum size
326 * at a single extent or less if the filesystem is near full. The closer the 326 * at a single extent or less if the filesystem is near full. The closer the
327 * filesystem is to full, the smaller the maximum prealocation. 327 * filesystem is to full, the smaller the maximum prealocation.
328 */ 328 */
329 STATIC xfs_fsblock_t 329 STATIC xfs_fsblock_t
330 xfs_iomap_prealloc_size( 330 xfs_iomap_prealloc_size(
331 struct xfs_mount *mp, 331 struct xfs_mount *mp,
332 struct xfs_inode *ip) 332 struct xfs_inode *ip)
333 { 333 {
334 xfs_fsblock_t alloc_blocks = 0; 334 xfs_fsblock_t alloc_blocks = 0;
335 335
336 if (!(mp->m_flags & XFS_MOUNT_DFLT_IOSIZE)) { 336 if (!(mp->m_flags & XFS_MOUNT_DFLT_IOSIZE)) {
337 int shift = 0; 337 int shift = 0;
338 int64_t freesp; 338 int64_t freesp;
339 339
340 /* 340 /*
341 * rounddown_pow_of_two() returns an undefined result 341 * rounddown_pow_of_two() returns an undefined result
342 * if we pass in alloc_blocks = 0. Hence the "+ 1" to 342 * if we pass in alloc_blocks = 0. Hence the "+ 1" to
343 * ensure we always pass in a non-zero value. 343 * ensure we always pass in a non-zero value.
344 */ 344 */
345 alloc_blocks = XFS_B_TO_FSB(mp, ip->i_size) + 1; 345 alloc_blocks = XFS_B_TO_FSB(mp, ip->i_size) + 1;
346 alloc_blocks = XFS_FILEOFF_MIN(MAXEXTLEN, 346 alloc_blocks = XFS_FILEOFF_MIN(MAXEXTLEN,
347 rounddown_pow_of_two(alloc_blocks)); 347 rounddown_pow_of_two(alloc_blocks));
348 348
349 xfs_icsb_sync_counters(mp, XFS_ICSB_LAZY_COUNT); 349 xfs_icsb_sync_counters(mp, XFS_ICSB_LAZY_COUNT);
350 freesp = mp->m_sb.sb_fdblocks; 350 freesp = mp->m_sb.sb_fdblocks;
351 if (freesp < mp->m_low_space[XFS_LOWSP_5_PCNT]) { 351 if (freesp < mp->m_low_space[XFS_LOWSP_5_PCNT]) {
352 shift = 2; 352 shift = 2;
353 if (freesp < mp->m_low_space[XFS_LOWSP_4_PCNT]) 353 if (freesp < mp->m_low_space[XFS_LOWSP_4_PCNT])
354 shift++; 354 shift++;
355 if (freesp < mp->m_low_space[XFS_LOWSP_3_PCNT]) 355 if (freesp < mp->m_low_space[XFS_LOWSP_3_PCNT])
356 shift++; 356 shift++;
357 if (freesp < mp->m_low_space[XFS_LOWSP_2_PCNT]) 357 if (freesp < mp->m_low_space[XFS_LOWSP_2_PCNT])
358 shift++; 358 shift++;
359 if (freesp < mp->m_low_space[XFS_LOWSP_1_PCNT]) 359 if (freesp < mp->m_low_space[XFS_LOWSP_1_PCNT])
360 shift++; 360 shift++;
361 } 361 }
362 if (shift) 362 if (shift)
363 alloc_blocks >>= shift; 363 alloc_blocks >>= shift;
364 } 364 }
365 365
366 if (alloc_blocks < mp->m_writeio_blocks) 366 if (alloc_blocks < mp->m_writeio_blocks)
367 alloc_blocks = mp->m_writeio_blocks; 367 alloc_blocks = mp->m_writeio_blocks;
368 368
369 return alloc_blocks; 369 return alloc_blocks;
370 } 370 }
371 371
372 int 372 int
373 xfs_iomap_write_delay( 373 xfs_iomap_write_delay(
374 xfs_inode_t *ip, 374 xfs_inode_t *ip,
375 xfs_off_t offset, 375 xfs_off_t offset,
376 size_t count, 376 size_t count,
377 xfs_bmbt_irec_t *ret_imap) 377 xfs_bmbt_irec_t *ret_imap)
378 { 378 {
379 xfs_mount_t *mp = ip->i_mount; 379 xfs_mount_t *mp = ip->i_mount;
380 xfs_fileoff_t offset_fsb; 380 xfs_fileoff_t offset_fsb;
381 xfs_fileoff_t last_fsb; 381 xfs_fileoff_t last_fsb;
382 xfs_off_t aligned_offset; 382 xfs_off_t aligned_offset;
383 xfs_fileoff_t ioalign; 383 xfs_fileoff_t ioalign;
384 xfs_fsblock_t firstblock; 384 xfs_fsblock_t firstblock;
385 xfs_extlen_t extsz; 385 xfs_extlen_t extsz;
386 int nimaps; 386 int nimaps;
387 xfs_bmbt_irec_t imap[XFS_WRITE_IMAPS]; 387 xfs_bmbt_irec_t imap[XFS_WRITE_IMAPS];
388 int prealloc, flushed = 0; 388 int prealloc, flushed = 0;
389 int error; 389 int error;
390 390
391 ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); 391 ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
392 392
393 /* 393 /*
394 * Make sure that the dquots are there. This doesn't hold 394 * Make sure that the dquots are there. This doesn't hold
395 * the ilock across a disk read. 395 * the ilock across a disk read.
396 */ 396 */
397 error = xfs_qm_dqattach_locked(ip, 0); 397 error = xfs_qm_dqattach_locked(ip, 0);
398 if (error) 398 if (error)
399 return XFS_ERROR(error); 399 return XFS_ERROR(error);
400 400
401 extsz = xfs_get_extsz_hint(ip); 401 extsz = xfs_get_extsz_hint(ip);
402 offset_fsb = XFS_B_TO_FSBT(mp, offset); 402 offset_fsb = XFS_B_TO_FSBT(mp, offset);
403 403
404 404
405 error = xfs_iomap_eof_want_preallocate(mp, ip, offset, count, 405 error = xfs_iomap_eof_want_preallocate(mp, ip, offset, count,
406 imap, XFS_WRITE_IMAPS, &prealloc); 406 imap, XFS_WRITE_IMAPS, &prealloc);
407 if (error) 407 if (error)
408 return error; 408 return error;
409 409
410 retry: 410 retry:
411 if (prealloc) { 411 if (prealloc) {
412 xfs_fsblock_t alloc_blocks = xfs_iomap_prealloc_size(mp, ip); 412 xfs_fsblock_t alloc_blocks = xfs_iomap_prealloc_size(mp, ip);
413 413
414 aligned_offset = XFS_WRITEIO_ALIGN(mp, (offset + count - 1)); 414 aligned_offset = XFS_WRITEIO_ALIGN(mp, (offset + count - 1));
415 ioalign = XFS_B_TO_FSBT(mp, aligned_offset); 415 ioalign = XFS_B_TO_FSBT(mp, aligned_offset);
416 last_fsb = ioalign + alloc_blocks; 416 last_fsb = ioalign + alloc_blocks;
417 } else { 417 } else {
418 last_fsb = XFS_B_TO_FSB(mp, ((xfs_ufsize_t)(offset + count))); 418 last_fsb = XFS_B_TO_FSB(mp, ((xfs_ufsize_t)(offset + count)));
419 } 419 }
420 420
421 if (prealloc || extsz) { 421 if (prealloc || extsz) {
422 error = xfs_iomap_eof_align_last_fsb(mp, ip, extsz, &last_fsb); 422 error = xfs_iomap_eof_align_last_fsb(mp, ip, extsz, &last_fsb);
423 if (error) 423 if (error)
424 return error; 424 return error;
425 } 425 }
426 426
427 nimaps = XFS_WRITE_IMAPS; 427 nimaps = XFS_WRITE_IMAPS;
428 firstblock = NULLFSBLOCK; 428 firstblock = NULLFSBLOCK;
429 error = xfs_bmapi(NULL, ip, offset_fsb, 429 error = xfs_bmapi(NULL, ip, offset_fsb,
430 (xfs_filblks_t)(last_fsb - offset_fsb), 430 (xfs_filblks_t)(last_fsb - offset_fsb),
431 XFS_BMAPI_DELAY | XFS_BMAPI_WRITE | 431 XFS_BMAPI_DELAY | XFS_BMAPI_WRITE |
432 XFS_BMAPI_ENTIRE, &firstblock, 1, imap, 432 XFS_BMAPI_ENTIRE, &firstblock, 1, imap,
433 &nimaps, NULL); 433 &nimaps, NULL);
434 switch (error) { 434 switch (error) {
435 case 0: 435 case 0:
436 case ENOSPC: 436 case ENOSPC:
437 case EDQUOT: 437 case EDQUOT:
438 break; 438 break;
439 default: 439 default:
440 return XFS_ERROR(error); 440 return XFS_ERROR(error);
441 } 441 }
442 442
443 /* 443 /*
444 * If bmapi returned us nothing, we got either ENOSPC or EDQUOT. For 444 * If bmapi returned us nothing, we got either ENOSPC or EDQUOT. For
445 * ENOSPC, * flush all other inodes with delalloc blocks to free up 445 * ENOSPC, * flush all other inodes with delalloc blocks to free up
446 * some of the excess reserved metadata space. For both cases, retry 446 * some of the excess reserved metadata space. For both cases, retry
447 * without EOF preallocation. 447 * without EOF preallocation.
448 */ 448 */
449 if (nimaps == 0) { 449 if (nimaps == 0) {
450 trace_xfs_delalloc_enospc(ip, offset, count); 450 trace_xfs_delalloc_enospc(ip, offset, count);
451 if (flushed) 451 if (flushed)
452 return XFS_ERROR(error ? error : ENOSPC); 452 return XFS_ERROR(error ? error : ENOSPC);
453 453
454 if (error == ENOSPC) { 454 if (error == ENOSPC) {
455 xfs_iunlock(ip, XFS_ILOCK_EXCL); 455 xfs_iunlock(ip, XFS_ILOCK_EXCL);
456 xfs_flush_inodes(ip); 456 xfs_flush_inodes(ip);
457 xfs_ilock(ip, XFS_ILOCK_EXCL); 457 xfs_ilock(ip, XFS_ILOCK_EXCL);
458 } 458 }
459 459
460 flushed = 1; 460 flushed = 1;
461 error = 0; 461 error = 0;
462 prealloc = 0; 462 prealloc = 0;
463 goto retry; 463 goto retry;
464 } 464 }
465 465
466 if (!(imap[0].br_startblock || XFS_IS_REALTIME_INODE(ip))) 466 if (!(imap[0].br_startblock || XFS_IS_REALTIME_INODE(ip)))
467 return xfs_cmn_err_fsblock_zero(ip, &imap[0]); 467 return xfs_alert_fsblock_zero(ip, &imap[0]);
468 468
469 *ret_imap = imap[0]; 469 *ret_imap = imap[0];
470 return 0; 470 return 0;
471 } 471 }
472 472
473 /* 473 /*
474 * Pass in a delayed allocate extent, convert it to real extents; 474 * Pass in a delayed allocate extent, convert it to real extents;
475 * return to the caller the extent we create which maps on top of 475 * return to the caller the extent we create which maps on top of
476 * the originating callers request. 476 * the originating callers request.
477 * 477 *
478 * Called without a lock on the inode. 478 * Called without a lock on the inode.
479 * 479 *
480 * We no longer bother to look at the incoming map - all we have to 480 * We no longer bother to look at the incoming map - all we have to
481 * guarantee is that whatever we allocate fills the required range. 481 * guarantee is that whatever we allocate fills the required range.
482 */ 482 */
483 int 483 int
484 xfs_iomap_write_allocate( 484 xfs_iomap_write_allocate(
485 xfs_inode_t *ip, 485 xfs_inode_t *ip,
486 xfs_off_t offset, 486 xfs_off_t offset,
487 size_t count, 487 size_t count,
488 xfs_bmbt_irec_t *imap) 488 xfs_bmbt_irec_t *imap)
489 { 489 {
490 xfs_mount_t *mp = ip->i_mount; 490 xfs_mount_t *mp = ip->i_mount;
491 xfs_fileoff_t offset_fsb, last_block; 491 xfs_fileoff_t offset_fsb, last_block;
492 xfs_fileoff_t end_fsb, map_start_fsb; 492 xfs_fileoff_t end_fsb, map_start_fsb;
493 xfs_fsblock_t first_block; 493 xfs_fsblock_t first_block;
494 xfs_bmap_free_t free_list; 494 xfs_bmap_free_t free_list;
495 xfs_filblks_t count_fsb; 495 xfs_filblks_t count_fsb;
496 xfs_trans_t *tp; 496 xfs_trans_t *tp;
497 int nimaps, committed; 497 int nimaps, committed;
498 int error = 0; 498 int error = 0;
499 int nres; 499 int nres;
500 500
501 /* 501 /*
502 * Make sure that the dquots are there. 502 * Make sure that the dquots are there.
503 */ 503 */
504 error = xfs_qm_dqattach(ip, 0); 504 error = xfs_qm_dqattach(ip, 0);
505 if (error) 505 if (error)
506 return XFS_ERROR(error); 506 return XFS_ERROR(error);
507 507
508 offset_fsb = XFS_B_TO_FSBT(mp, offset); 508 offset_fsb = XFS_B_TO_FSBT(mp, offset);
509 count_fsb = imap->br_blockcount; 509 count_fsb = imap->br_blockcount;
510 map_start_fsb = imap->br_startoff; 510 map_start_fsb = imap->br_startoff;
511 511
512 XFS_STATS_ADD(xs_xstrat_bytes, XFS_FSB_TO_B(mp, count_fsb)); 512 XFS_STATS_ADD(xs_xstrat_bytes, XFS_FSB_TO_B(mp, count_fsb));
513 513
514 while (count_fsb != 0) { 514 while (count_fsb != 0) {
515 /* 515 /*
516 * Set up a transaction with which to allocate the 516 * Set up a transaction with which to allocate the
517 * backing store for the file. Do allocations in a 517 * backing store for the file. Do allocations in a
518 * loop until we get some space in the range we are 518 * loop until we get some space in the range we are
519 * interested in. The other space that might be allocated 519 * interested in. The other space that might be allocated
520 * is in the delayed allocation extent on which we sit 520 * is in the delayed allocation extent on which we sit
521 * but before our buffer starts. 521 * but before our buffer starts.
522 */ 522 */
523 523
524 nimaps = 0; 524 nimaps = 0;
525 while (nimaps == 0) { 525 while (nimaps == 0) {
526 tp = xfs_trans_alloc(mp, XFS_TRANS_STRAT_WRITE); 526 tp = xfs_trans_alloc(mp, XFS_TRANS_STRAT_WRITE);
527 tp->t_flags |= XFS_TRANS_RESERVE; 527 tp->t_flags |= XFS_TRANS_RESERVE;
528 nres = XFS_EXTENTADD_SPACE_RES(mp, XFS_DATA_FORK); 528 nres = XFS_EXTENTADD_SPACE_RES(mp, XFS_DATA_FORK);
529 error = xfs_trans_reserve(tp, nres, 529 error = xfs_trans_reserve(tp, nres,
530 XFS_WRITE_LOG_RES(mp), 530 XFS_WRITE_LOG_RES(mp),
531 0, XFS_TRANS_PERM_LOG_RES, 531 0, XFS_TRANS_PERM_LOG_RES,
532 XFS_WRITE_LOG_COUNT); 532 XFS_WRITE_LOG_COUNT);
533 if (error) { 533 if (error) {
534 xfs_trans_cancel(tp, 0); 534 xfs_trans_cancel(tp, 0);
535 return XFS_ERROR(error); 535 return XFS_ERROR(error);
536 } 536 }
537 xfs_ilock(ip, XFS_ILOCK_EXCL); 537 xfs_ilock(ip, XFS_ILOCK_EXCL);
538 xfs_trans_ijoin(tp, ip); 538 xfs_trans_ijoin(tp, ip);
539 539
540 xfs_bmap_init(&free_list, &first_block); 540 xfs_bmap_init(&free_list, &first_block);
541 541
542 /* 542 /*
543 * it is possible that the extents have changed since 543 * it is possible that the extents have changed since
544 * we did the read call as we dropped the ilock for a 544 * we did the read call as we dropped the ilock for a
545 * while. We have to be careful about truncates or hole 545 * while. We have to be careful about truncates or hole
546 * punchs here - we are not allowed to allocate 546 * punchs here - we are not allowed to allocate
547 * non-delalloc blocks here. 547 * non-delalloc blocks here.
548 * 548 *
549 * The only protection against truncation is the pages 549 * The only protection against truncation is the pages
550 * for the range we are being asked to convert are 550 * for the range we are being asked to convert are
551 * locked and hence a truncate will block on them 551 * locked and hence a truncate will block on them
552 * first. 552 * first.
553 * 553 *
554 * As a result, if we go beyond the range we really 554 * As a result, if we go beyond the range we really
555 * need and hit an delalloc extent boundary followed by 555 * need and hit an delalloc extent boundary followed by
556 * a hole while we have excess blocks in the map, we 556 * a hole while we have excess blocks in the map, we
557 * will fill the hole incorrectly and overrun the 557 * will fill the hole incorrectly and overrun the
558 * transaction reservation. 558 * transaction reservation.
559 * 559 *
560 * Using a single map prevents this as we are forced to 560 * Using a single map prevents this as we are forced to
561 * check each map we look for overlap with the desired 561 * check each map we look for overlap with the desired
562 * range and abort as soon as we find it. Also, given 562 * range and abort as soon as we find it. Also, given
563 * that we only return a single map, having one beyond 563 * that we only return a single map, having one beyond
564 * what we can return is probably a bit silly. 564 * what we can return is probably a bit silly.
565 * 565 *
566 * We also need to check that we don't go beyond EOF; 566 * We also need to check that we don't go beyond EOF;
567 * this is a truncate optimisation as a truncate sets 567 * this is a truncate optimisation as a truncate sets
568 * the new file size before block on the pages we 568 * the new file size before block on the pages we
569 * currently have locked under writeback. Because they 569 * currently have locked under writeback. Because they
570 * are about to be tossed, we don't need to write them 570 * are about to be tossed, we don't need to write them
571 * back.... 571 * back....
572 */ 572 */
573 nimaps = 1; 573 nimaps = 1;
574 end_fsb = XFS_B_TO_FSB(mp, ip->i_size); 574 end_fsb = XFS_B_TO_FSB(mp, ip->i_size);
575 error = xfs_bmap_last_offset(NULL, ip, &last_block, 575 error = xfs_bmap_last_offset(NULL, ip, &last_block,
576 XFS_DATA_FORK); 576 XFS_DATA_FORK);
577 if (error) 577 if (error)
578 goto trans_cancel; 578 goto trans_cancel;
579 579
580 last_block = XFS_FILEOFF_MAX(last_block, end_fsb); 580 last_block = XFS_FILEOFF_MAX(last_block, end_fsb);
581 if ((map_start_fsb + count_fsb) > last_block) { 581 if ((map_start_fsb + count_fsb) > last_block) {
582 count_fsb = last_block - map_start_fsb; 582 count_fsb = last_block - map_start_fsb;
583 if (count_fsb == 0) { 583 if (count_fsb == 0) {
584 error = EAGAIN; 584 error = EAGAIN;
585 goto trans_cancel; 585 goto trans_cancel;
586 } 586 }
587 } 587 }
588 588
589 /* 589 /*
590 * Go get the actual blocks. 590 * Go get the actual blocks.
591 * 591 *
592 * From this point onwards we overwrite the imap 592 * From this point onwards we overwrite the imap
593 * pointer that the caller gave to us. 593 * pointer that the caller gave to us.
594 */ 594 */
595 error = xfs_bmapi(tp, ip, map_start_fsb, count_fsb, 595 error = xfs_bmapi(tp, ip, map_start_fsb, count_fsb,
596 XFS_BMAPI_WRITE, &first_block, 1, 596 XFS_BMAPI_WRITE, &first_block, 1,
597 imap, &nimaps, &free_list); 597 imap, &nimaps, &free_list);
598 if (error) 598 if (error)
599 goto trans_cancel; 599 goto trans_cancel;
600 600
601 error = xfs_bmap_finish(&tp, &free_list, &committed); 601 error = xfs_bmap_finish(&tp, &free_list, &committed);
602 if (error) 602 if (error)
603 goto trans_cancel; 603 goto trans_cancel;
604 604
605 error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES); 605 error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES);
606 if (error) 606 if (error)
607 goto error0; 607 goto error0;
608 608
609 xfs_iunlock(ip, XFS_ILOCK_EXCL); 609 xfs_iunlock(ip, XFS_ILOCK_EXCL);
610 } 610 }
611 611
612 /* 612 /*
613 * See if we were able to allocate an extent that 613 * See if we were able to allocate an extent that
614 * covers at least part of the callers request 614 * covers at least part of the callers request
615 */ 615 */
616 if (!(imap->br_startblock || XFS_IS_REALTIME_INODE(ip))) 616 if (!(imap->br_startblock || XFS_IS_REALTIME_INODE(ip)))
617 return xfs_cmn_err_fsblock_zero(ip, imap); 617 return xfs_alert_fsblock_zero(ip, imap);
618 618
619 if ((offset_fsb >= imap->br_startoff) && 619 if ((offset_fsb >= imap->br_startoff) &&
620 (offset_fsb < (imap->br_startoff + 620 (offset_fsb < (imap->br_startoff +
621 imap->br_blockcount))) { 621 imap->br_blockcount))) {
622 XFS_STATS_INC(xs_xstrat_quick); 622 XFS_STATS_INC(xs_xstrat_quick);
623 return 0; 623 return 0;
624 } 624 }
625 625
626 /* 626 /*
627 * So far we have not mapped the requested part of the 627 * So far we have not mapped the requested part of the
628 * file, just surrounding data, try again. 628 * file, just surrounding data, try again.
629 */ 629 */
630 count_fsb -= imap->br_blockcount; 630 count_fsb -= imap->br_blockcount;
631 map_start_fsb = imap->br_startoff + imap->br_blockcount; 631 map_start_fsb = imap->br_startoff + imap->br_blockcount;
632 } 632 }
633 633
634 trans_cancel: 634 trans_cancel:
635 xfs_bmap_cancel(&free_list); 635 xfs_bmap_cancel(&free_list);
636 xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES | XFS_TRANS_ABORT); 636 xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES | XFS_TRANS_ABORT);
637 error0: 637 error0:
638 xfs_iunlock(ip, XFS_ILOCK_EXCL); 638 xfs_iunlock(ip, XFS_ILOCK_EXCL);
639 return XFS_ERROR(error); 639 return XFS_ERROR(error);
640 } 640 }
641 641
642 int 642 int
643 xfs_iomap_write_unwritten( 643 xfs_iomap_write_unwritten(
644 xfs_inode_t *ip, 644 xfs_inode_t *ip,
645 xfs_off_t offset, 645 xfs_off_t offset,
646 size_t count) 646 size_t count)
647 { 647 {
648 xfs_mount_t *mp = ip->i_mount; 648 xfs_mount_t *mp = ip->i_mount;
649 xfs_fileoff_t offset_fsb; 649 xfs_fileoff_t offset_fsb;
650 xfs_filblks_t count_fsb; 650 xfs_filblks_t count_fsb;
651 xfs_filblks_t numblks_fsb; 651 xfs_filblks_t numblks_fsb;
652 xfs_fsblock_t firstfsb; 652 xfs_fsblock_t firstfsb;
653 int nimaps; 653 int nimaps;
654 xfs_trans_t *tp; 654 xfs_trans_t *tp;
655 xfs_bmbt_irec_t imap; 655 xfs_bmbt_irec_t imap;
656 xfs_bmap_free_t free_list; 656 xfs_bmap_free_t free_list;
657 uint resblks; 657 uint resblks;
658 int committed; 658 int committed;
659 int error; 659 int error;
660 660
661 trace_xfs_unwritten_convert(ip, offset, count); 661 trace_xfs_unwritten_convert(ip, offset, count);
662 662
663 offset_fsb = XFS_B_TO_FSBT(mp, offset); 663 offset_fsb = XFS_B_TO_FSBT(mp, offset);
664 count_fsb = XFS_B_TO_FSB(mp, (xfs_ufsize_t)offset + count); 664 count_fsb = XFS_B_TO_FSB(mp, (xfs_ufsize_t)offset + count);
665 count_fsb = (xfs_filblks_t)(count_fsb - offset_fsb); 665 count_fsb = (xfs_filblks_t)(count_fsb - offset_fsb);
666 666
667 /* 667 /*
668 * Reserve enough blocks in this transaction for two complete extent 668 * Reserve enough blocks in this transaction for two complete extent
669 * btree splits. We may be converting the middle part of an unwritten 669 * btree splits. We may be converting the middle part of an unwritten
670 * extent and in this case we will insert two new extents in the btree 670 * extent and in this case we will insert two new extents in the btree
671 * each of which could cause a full split. 671 * each of which could cause a full split.
672 * 672 *
673 * This reservation amount will be used in the first call to 673 * This reservation amount will be used in the first call to
674 * xfs_bmbt_split() to select an AG with enough space to satisfy the 674 * xfs_bmbt_split() to select an AG with enough space to satisfy the
675 * rest of the operation. 675 * rest of the operation.
676 */ 676 */
677 resblks = XFS_DIOSTRAT_SPACE_RES(mp, 0) << 1; 677 resblks = XFS_DIOSTRAT_SPACE_RES(mp, 0) << 1;
678 678
679 do { 679 do {
680 /* 680 /*
681 * set up a transaction to convert the range of extents 681 * set up a transaction to convert the range of extents
682 * from unwritten to real. Do allocations in a loop until 682 * from unwritten to real. Do allocations in a loop until
683 * we have covered the range passed in. 683 * we have covered the range passed in.
684 * 684 *
685 * Note that we open code the transaction allocation here 685 * Note that we open code the transaction allocation here
686 * to pass KM_NOFS--we can't risk to recursing back into 686 * to pass KM_NOFS--we can't risk to recursing back into
687 * the filesystem here as we might be asked to write out 687 * the filesystem here as we might be asked to write out
688 * the same inode that we complete here and might deadlock 688 * the same inode that we complete here and might deadlock
689 * on the iolock. 689 * on the iolock.
690 */ 690 */
691 xfs_wait_for_freeze(mp, SB_FREEZE_TRANS); 691 xfs_wait_for_freeze(mp, SB_FREEZE_TRANS);
692 tp = _xfs_trans_alloc(mp, XFS_TRANS_STRAT_WRITE, KM_NOFS); 692 tp = _xfs_trans_alloc(mp, XFS_TRANS_STRAT_WRITE, KM_NOFS);
693 tp->t_flags |= XFS_TRANS_RESERVE; 693 tp->t_flags |= XFS_TRANS_RESERVE;
694 error = xfs_trans_reserve(tp, resblks, 694 error = xfs_trans_reserve(tp, resblks,
695 XFS_WRITE_LOG_RES(mp), 0, 695 XFS_WRITE_LOG_RES(mp), 0,
696 XFS_TRANS_PERM_LOG_RES, 696 XFS_TRANS_PERM_LOG_RES,
697 XFS_WRITE_LOG_COUNT); 697 XFS_WRITE_LOG_COUNT);
698 if (error) { 698 if (error) {
699 xfs_trans_cancel(tp, 0); 699 xfs_trans_cancel(tp, 0);
700 return XFS_ERROR(error); 700 return XFS_ERROR(error);
701 } 701 }
702 702
703 xfs_ilock(ip, XFS_ILOCK_EXCL); 703 xfs_ilock(ip, XFS_ILOCK_EXCL);
704 xfs_trans_ijoin(tp, ip); 704 xfs_trans_ijoin(tp, ip);
705 705
706 /* 706 /*
707 * Modify the unwritten extent state of the buffer. 707 * Modify the unwritten extent state of the buffer.
708 */ 708 */
709 xfs_bmap_init(&free_list, &firstfsb); 709 xfs_bmap_init(&free_list, &firstfsb);
710 nimaps = 1; 710 nimaps = 1;
711 error = xfs_bmapi(tp, ip, offset_fsb, count_fsb, 711 error = xfs_bmapi(tp, ip, offset_fsb, count_fsb,
712 XFS_BMAPI_WRITE|XFS_BMAPI_CONVERT, &firstfsb, 712 XFS_BMAPI_WRITE|XFS_BMAPI_CONVERT, &firstfsb,
713 1, &imap, &nimaps, &free_list); 713 1, &imap, &nimaps, &free_list);
714 if (error) 714 if (error)
715 goto error_on_bmapi_transaction; 715 goto error_on_bmapi_transaction;
716 716
717 error = xfs_bmap_finish(&(tp), &(free_list), &committed); 717 error = xfs_bmap_finish(&(tp), &(free_list), &committed);
718 if (error) 718 if (error)
719 goto error_on_bmapi_transaction; 719 goto error_on_bmapi_transaction;
720 720
721 error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES); 721 error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES);
722 xfs_iunlock(ip, XFS_ILOCK_EXCL); 722 xfs_iunlock(ip, XFS_ILOCK_EXCL);
723 if (error) 723 if (error)
724 return XFS_ERROR(error); 724 return XFS_ERROR(error);
725 725
726 if (!(imap.br_startblock || XFS_IS_REALTIME_INODE(ip))) 726 if (!(imap.br_startblock || XFS_IS_REALTIME_INODE(ip)))
727 return xfs_cmn_err_fsblock_zero(ip, &imap); 727 return xfs_alert_fsblock_zero(ip, &imap);
728 728
729 if ((numblks_fsb = imap.br_blockcount) == 0) { 729 if ((numblks_fsb = imap.br_blockcount) == 0) {
730 /* 730 /*
731 * The numblks_fsb value should always get 731 * The numblks_fsb value should always get
732 * smaller, otherwise the loop is stuck. 732 * smaller, otherwise the loop is stuck.
733 */ 733 */
734 ASSERT(imap.br_blockcount); 734 ASSERT(imap.br_blockcount);
735 break; 735 break;
736 } 736 }
737 offset_fsb += numblks_fsb; 737 offset_fsb += numblks_fsb;
738 count_fsb -= numblks_fsb; 738 count_fsb -= numblks_fsb;
739 } while (count_fsb > 0); 739 } while (count_fsb > 0);
740 740
741 return 0; 741 return 0;
742 742
743 error_on_bmapi_transaction: 743 error_on_bmapi_transaction:
744 xfs_bmap_cancel(&free_list); 744 xfs_bmap_cancel(&free_list);
745 xfs_trans_cancel(tp, (XFS_TRANS_RELEASE_LOG_RES | XFS_TRANS_ABORT)); 745 xfs_trans_cancel(tp, (XFS_TRANS_RELEASE_LOG_RES | XFS_TRANS_ABORT));
746 xfs_iunlock(ip, XFS_ILOCK_EXCL); 746 xfs_iunlock(ip, XFS_ILOCK_EXCL);
747 return XFS_ERROR(error); 747 return XFS_ERROR(error);
748 } 748 }
749 749