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Commit | Line | Data |
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b3b94faa DT |
1 | /* |
2 | * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. | |
3a8a9a10 | 3 | * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved. |
b3b94faa DT |
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 | |
e9fc2aa0 | 7 | * of the GNU General Public License version 2. |
b3b94faa DT |
8 | */ |
9 | ||
b3b94faa DT |
10 | #include <linux/slab.h> |
11 | #include <linux/spinlock.h> | |
12 | #include <linux/completion.h> | |
13 | #include <linux/buffer_head.h> | |
14 | #include <linux/pagemap.h> | |
15 | #include <linux/uio.h> | |
16 | #include <linux/blkdev.h> | |
17 | #include <linux/mm.h> | |
f58ba889 | 18 | #include <linux/mount.h> |
18ec7d5c | 19 | #include <linux/fs.h> |
5c676f6d | 20 | #include <linux/gfs2_ondisk.h> |
71b86f56 | 21 | #include <linux/ext2_fs.h> |
2fe17c10 CH |
22 | #include <linux/falloc.h> |
23 | #include <linux/swap.h> | |
71b86f56 | 24 | #include <linux/crc32.h> |
33c3de32 | 25 | #include <linux/writeback.h> |
b3b94faa | 26 | #include <asm/uaccess.h> |
f057f6cd SW |
27 | #include <linux/dlm.h> |
28 | #include <linux/dlm_plock.h> | |
b3b94faa DT |
29 | |
30 | #include "gfs2.h" | |
5c676f6d | 31 | #include "incore.h" |
b3b94faa DT |
32 | #include "bmap.h" |
33 | #include "dir.h" | |
34 | #include "glock.h" | |
35 | #include "glops.h" | |
36 | #include "inode.h" | |
b3b94faa DT |
37 | #include "log.h" |
38 | #include "meta_io.h" | |
b3b94faa DT |
39 | #include "quota.h" |
40 | #include "rgrp.h" | |
41 | #include "trans.h" | |
5c676f6d | 42 | #include "util.h" |
b3b94faa | 43 | |
b3b94faa DT |
44 | /** |
45 | * gfs2_llseek - seek to a location in a file | |
46 | * @file: the file | |
47 | * @offset: the offset | |
48 | * @origin: Where to seek from (SEEK_SET, SEEK_CUR, or SEEK_END) | |
49 | * | |
50 | * SEEK_END requires the glock for the file because it references the | |
51 | * file's size. | |
52 | * | |
53 | * Returns: The new offset, or errno | |
54 | */ | |
55 | ||
56 | static loff_t gfs2_llseek(struct file *file, loff_t offset, int origin) | |
57 | { | |
feaa7bba | 58 | struct gfs2_inode *ip = GFS2_I(file->f_mapping->host); |
b3b94faa DT |
59 | struct gfs2_holder i_gh; |
60 | loff_t error; | |
61 | ||
b3b94faa DT |
62 | if (origin == 2) { |
63 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, | |
64 | &i_gh); | |
65 | if (!error) { | |
9465efc9 | 66 | error = generic_file_llseek_unlocked(file, offset, origin); |
b3b94faa DT |
67 | gfs2_glock_dq_uninit(&i_gh); |
68 | } | |
69 | } else | |
9465efc9 | 70 | error = generic_file_llseek_unlocked(file, offset, origin); |
b3b94faa DT |
71 | |
72 | return error; | |
73 | } | |
74 | ||
b3b94faa | 75 | /** |
f0e522a9 | 76 | * gfs2_readdir - Read directory entries from a directory |
b3b94faa DT |
77 | * @file: The directory to read from |
78 | * @dirent: Buffer for dirents | |
79 | * @filldir: Function used to do the copying | |
80 | * | |
81 | * Returns: errno | |
82 | */ | |
83 | ||
f0e522a9 | 84 | static int gfs2_readdir(struct file *file, void *dirent, filldir_t filldir) |
b3b94faa | 85 | { |
71b86f56 | 86 | struct inode *dir = file->f_mapping->host; |
feaa7bba | 87 | struct gfs2_inode *dip = GFS2_I(dir); |
b3b94faa | 88 | struct gfs2_holder d_gh; |
cd915493 | 89 | u64 offset = file->f_pos; |
b3b94faa DT |
90 | int error; |
91 | ||
719ee344 SW |
92 | gfs2_holder_init(dip->i_gl, LM_ST_SHARED, 0, &d_gh); |
93 | error = gfs2_glock_nq(&d_gh); | |
b3b94faa DT |
94 | if (error) { |
95 | gfs2_holder_uninit(&d_gh); | |
96 | return error; | |
97 | } | |
98 | ||
3699e3a4 | 99 | error = gfs2_dir_read(dir, &offset, dirent, filldir); |
b3b94faa DT |
100 | |
101 | gfs2_glock_dq_uninit(&d_gh); | |
102 | ||
b3b94faa DT |
103 | file->f_pos = offset; |
104 | ||
b3b94faa DT |
105 | return error; |
106 | } | |
107 | ||
128e5eba SW |
108 | /** |
109 | * fsflags_cvt | |
110 | * @table: A table of 32 u32 flags | |
111 | * @val: a 32 bit value to convert | |
112 | * | |
113 | * This function can be used to convert between fsflags values and | |
114 | * GFS2's own flags values. | |
115 | * | |
116 | * Returns: the converted flags | |
117 | */ | |
118 | static u32 fsflags_cvt(const u32 *table, u32 val) | |
119 | { | |
120 | u32 res = 0; | |
121 | while(val) { | |
122 | if (val & 1) | |
123 | res |= *table; | |
124 | table++; | |
125 | val >>= 1; | |
126 | } | |
127 | return res; | |
128 | } | |
b3b94faa | 129 | |
128e5eba SW |
130 | static const u32 fsflags_to_gfs2[32] = { |
131 | [3] = GFS2_DIF_SYNC, | |
132 | [4] = GFS2_DIF_IMMUTABLE, | |
133 | [5] = GFS2_DIF_APPENDONLY, | |
134 | [7] = GFS2_DIF_NOATIME, | |
135 | [12] = GFS2_DIF_EXHASH, | |
b9af7ca6 | 136 | [14] = GFS2_DIF_INHERIT_JDATA, |
71b86f56 SW |
137 | }; |
138 | ||
128e5eba SW |
139 | static const u32 gfs2_to_fsflags[32] = { |
140 | [gfs2fl_Sync] = FS_SYNC_FL, | |
141 | [gfs2fl_Immutable] = FS_IMMUTABLE_FL, | |
142 | [gfs2fl_AppendOnly] = FS_APPEND_FL, | |
143 | [gfs2fl_NoAtime] = FS_NOATIME_FL, | |
144 | [gfs2fl_ExHash] = FS_INDEX_FL, | |
128e5eba | 145 | [gfs2fl_InheritJdata] = FS_JOURNAL_DATA_FL, |
7ea9ea83 | 146 | }; |
71b86f56 | 147 | |
b09e593d | 148 | static int gfs2_get_flags(struct file *filp, u32 __user *ptr) |
71b86f56 | 149 | { |
81454098 | 150 | struct inode *inode = filp->f_path.dentry->d_inode; |
feaa7bba | 151 | struct gfs2_inode *ip = GFS2_I(inode); |
71b86f56 SW |
152 | struct gfs2_holder gh; |
153 | int error; | |
128e5eba | 154 | u32 fsflags; |
71b86f56 | 155 | |
719ee344 SW |
156 | gfs2_holder_init(ip->i_gl, LM_ST_SHARED, 0, &gh); |
157 | error = gfs2_glock_nq(&gh); | |
71b86f56 SW |
158 | if (error) |
159 | return error; | |
907b9bce | 160 | |
383f01fb SW |
161 | fsflags = fsflags_cvt(gfs2_to_fsflags, ip->i_diskflags); |
162 | if (!S_ISDIR(inode->i_mode) && ip->i_diskflags & GFS2_DIF_JDATA) | |
c9f6a6bb | 163 | fsflags |= FS_JOURNAL_DATA_FL; |
128e5eba | 164 | if (put_user(fsflags, ptr)) |
71b86f56 SW |
165 | error = -EFAULT; |
166 | ||
3cc3f710 | 167 | gfs2_glock_dq(&gh); |
71b86f56 SW |
168 | gfs2_holder_uninit(&gh); |
169 | return error; | |
170 | } | |
171 | ||
6b124d8d SW |
172 | void gfs2_set_inode_flags(struct inode *inode) |
173 | { | |
174 | struct gfs2_inode *ip = GFS2_I(inode); | |
6b124d8d SW |
175 | unsigned int flags = inode->i_flags; |
176 | ||
177 | flags &= ~(S_SYNC|S_APPEND|S_IMMUTABLE|S_NOATIME|S_DIRSYNC); | |
383f01fb | 178 | if (ip->i_diskflags & GFS2_DIF_IMMUTABLE) |
6b124d8d | 179 | flags |= S_IMMUTABLE; |
383f01fb | 180 | if (ip->i_diskflags & GFS2_DIF_APPENDONLY) |
6b124d8d | 181 | flags |= S_APPEND; |
383f01fb | 182 | if (ip->i_diskflags & GFS2_DIF_NOATIME) |
6b124d8d | 183 | flags |= S_NOATIME; |
383f01fb | 184 | if (ip->i_diskflags & GFS2_DIF_SYNC) |
6b124d8d SW |
185 | flags |= S_SYNC; |
186 | inode->i_flags = flags; | |
187 | } | |
188 | ||
71b86f56 SW |
189 | /* Flags that can be set by user space */ |
190 | #define GFS2_FLAGS_USER_SET (GFS2_DIF_JDATA| \ | |
71b86f56 SW |
191 | GFS2_DIF_IMMUTABLE| \ |
192 | GFS2_DIF_APPENDONLY| \ | |
193 | GFS2_DIF_NOATIME| \ | |
194 | GFS2_DIF_SYNC| \ | |
195 | GFS2_DIF_SYSTEM| \ | |
71b86f56 SW |
196 | GFS2_DIF_INHERIT_JDATA) |
197 | ||
198 | /** | |
199 | * gfs2_set_flags - set flags on an inode | |
200 | * @inode: The inode | |
201 | * @flags: The flags to set | |
202 | * @mask: Indicates which flags are valid | |
203 | * | |
204 | */ | |
b09e593d | 205 | static int do_gfs2_set_flags(struct file *filp, u32 reqflags, u32 mask) |
71b86f56 | 206 | { |
81454098 | 207 | struct inode *inode = filp->f_path.dentry->d_inode; |
feaa7bba SW |
208 | struct gfs2_inode *ip = GFS2_I(inode); |
209 | struct gfs2_sbd *sdp = GFS2_SB(inode); | |
71b86f56 SW |
210 | struct buffer_head *bh; |
211 | struct gfs2_holder gh; | |
212 | int error; | |
55eccc6d | 213 | u32 new_flags, flags; |
71b86f56 | 214 | |
f58ba889 | 215 | error = mnt_want_write(filp->f_path.mnt); |
52f341cf | 216 | if (error) |
71b86f56 SW |
217 | return error; |
218 | ||
f58ba889 MS |
219 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &gh); |
220 | if (error) | |
221 | goto out_drop_write; | |
222 | ||
7df0e039 SW |
223 | error = -EACCES; |
224 | if (!is_owner_or_cap(inode)) | |
225 | goto out; | |
226 | ||
227 | error = 0; | |
383f01fb | 228 | flags = ip->i_diskflags; |
55eccc6d | 229 | new_flags = (flags & ~mask) | (reqflags & mask); |
71b86f56 SW |
230 | if ((new_flags ^ flags) == 0) |
231 | goto out; | |
232 | ||
233 | error = -EINVAL; | |
234 | if ((new_flags ^ flags) & ~GFS2_FLAGS_USER_SET) | |
235 | goto out; | |
236 | ||
71b86f56 SW |
237 | error = -EPERM; |
238 | if (IS_IMMUTABLE(inode) && (new_flags & GFS2_DIF_IMMUTABLE)) | |
239 | goto out; | |
240 | if (IS_APPEND(inode) && (new_flags & GFS2_DIF_APPENDONLY)) | |
241 | goto out; | |
907b9bce | 242 | if (((new_flags ^ flags) & GFS2_DIF_IMMUTABLE) && |
b9cb9813 | 243 | !capable(CAP_LINUX_IMMUTABLE)) |
71b86f56 | 244 | goto out; |
b9cb9813 | 245 | if (!IS_IMMUTABLE(inode)) { |
b74c79e9 | 246 | error = gfs2_permission(inode, MAY_WRITE, 0); |
b9cb9813 SW |
247 | if (error) |
248 | goto out; | |
249 | } | |
5561093e SW |
250 | if ((flags ^ new_flags) & GFS2_DIF_JDATA) { |
251 | if (flags & GFS2_DIF_JDATA) | |
252 | gfs2_log_flush(sdp, ip->i_gl); | |
253 | error = filemap_fdatawrite(inode->i_mapping); | |
254 | if (error) | |
255 | goto out; | |
256 | error = filemap_fdatawait(inode->i_mapping); | |
257 | if (error) | |
258 | goto out; | |
259 | } | |
55eccc6d | 260 | error = gfs2_trans_begin(sdp, RES_DINODE, 0); |
71b86f56 SW |
261 | if (error) |
262 | goto out; | |
55eccc6d SW |
263 | error = gfs2_meta_inode_buffer(ip, &bh); |
264 | if (error) | |
265 | goto out_trans_end; | |
71b86f56 | 266 | gfs2_trans_add_bh(ip->i_gl, bh, 1); |
383f01fb | 267 | ip->i_diskflags = new_flags; |
539e5d6b | 268 | gfs2_dinode_out(ip, bh->b_data); |
71b86f56 | 269 | brelse(bh); |
6b124d8d | 270 | gfs2_set_inode_flags(inode); |
5561093e | 271 | gfs2_set_aops(inode); |
55eccc6d SW |
272 | out_trans_end: |
273 | gfs2_trans_end(sdp); | |
71b86f56 SW |
274 | out: |
275 | gfs2_glock_dq_uninit(&gh); | |
f58ba889 MS |
276 | out_drop_write: |
277 | mnt_drop_write(filp->f_path.mnt); | |
71b86f56 SW |
278 | return error; |
279 | } | |
280 | ||
b09e593d | 281 | static int gfs2_set_flags(struct file *filp, u32 __user *ptr) |
71b86f56 | 282 | { |
b9af7ca6 | 283 | struct inode *inode = filp->f_path.dentry->d_inode; |
128e5eba | 284 | u32 fsflags, gfsflags; |
7df0e039 | 285 | |
128e5eba | 286 | if (get_user(fsflags, ptr)) |
71b86f56 | 287 | return -EFAULT; |
7df0e039 | 288 | |
128e5eba | 289 | gfsflags = fsflags_cvt(fsflags_to_gfs2, fsflags); |
b9af7ca6 SW |
290 | if (!S_ISDIR(inode->i_mode)) { |
291 | if (gfsflags & GFS2_DIF_INHERIT_JDATA) | |
292 | gfsflags ^= (GFS2_DIF_JDATA | GFS2_DIF_INHERIT_JDATA); | |
b9af7ca6 SW |
293 | return do_gfs2_set_flags(filp, gfsflags, ~0); |
294 | } | |
295 | return do_gfs2_set_flags(filp, gfsflags, ~GFS2_DIF_JDATA); | |
71b86f56 SW |
296 | } |
297 | ||
b09e593d | 298 | static long gfs2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) |
71b86f56 SW |
299 | { |
300 | switch(cmd) { | |
128e5eba | 301 | case FS_IOC_GETFLAGS: |
b09e593d | 302 | return gfs2_get_flags(filp, (u32 __user *)arg); |
128e5eba | 303 | case FS_IOC_SETFLAGS: |
b09e593d | 304 | return gfs2_set_flags(filp, (u32 __user *)arg); |
71b86f56 SW |
305 | } |
306 | return -ENOTTY; | |
307 | } | |
308 | ||
3cc3f710 SW |
309 | /** |
310 | * gfs2_allocate_page_backing - Use bmap to allocate blocks | |
311 | * @page: The (locked) page to allocate backing for | |
312 | * | |
313 | * We try to allocate all the blocks required for the page in | |
314 | * one go. This might fail for various reasons, so we keep | |
315 | * trying until all the blocks to back this page are allocated. | |
316 | * If some of the blocks are already allocated, thats ok too. | |
317 | */ | |
318 | ||
319 | static int gfs2_allocate_page_backing(struct page *page) | |
320 | { | |
321 | struct inode *inode = page->mapping->host; | |
322 | struct buffer_head bh; | |
323 | unsigned long size = PAGE_CACHE_SIZE; | |
324 | u64 lblock = page->index << (PAGE_CACHE_SHIFT - inode->i_blkbits); | |
325 | ||
326 | do { | |
327 | bh.b_state = 0; | |
328 | bh.b_size = size; | |
e9e1ef2b | 329 | gfs2_block_map(inode, lblock, &bh, 1); |
3cc3f710 SW |
330 | if (!buffer_mapped(&bh)) |
331 | return -EIO; | |
332 | size -= bh.b_size; | |
333 | lblock += (bh.b_size >> inode->i_blkbits); | |
334 | } while(size > 0); | |
335 | return 0; | |
336 | } | |
337 | ||
338 | /** | |
339 | * gfs2_page_mkwrite - Make a shared, mmap()ed, page writable | |
340 | * @vma: The virtual memory area | |
341 | * @page: The page which is about to become writable | |
342 | * | |
343 | * When the page becomes writable, we need to ensure that we have | |
344 | * blocks allocated on disk to back that page. | |
345 | */ | |
346 | ||
c2ec175c | 347 | static int gfs2_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf) |
3cc3f710 | 348 | { |
c2ec175c | 349 | struct page *page = vmf->page; |
3cc3f710 SW |
350 | struct inode *inode = vma->vm_file->f_path.dentry->d_inode; |
351 | struct gfs2_inode *ip = GFS2_I(inode); | |
352 | struct gfs2_sbd *sdp = GFS2_SB(inode); | |
353 | unsigned long last_index; | |
c8f554b9 | 354 | u64 pos = page->index << PAGE_CACHE_SHIFT; |
3cc3f710 | 355 | unsigned int data_blocks, ind_blocks, rblocks; |
3cc3f710 SW |
356 | struct gfs2_holder gh; |
357 | struct gfs2_alloc *al; | |
358 | int ret; | |
359 | ||
719ee344 SW |
360 | gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &gh); |
361 | ret = gfs2_glock_nq(&gh); | |
3cc3f710 SW |
362 | if (ret) |
363 | goto out; | |
364 | ||
9c538837 SW |
365 | set_bit(GLF_DIRTY, &ip->i_gl->gl_flags); |
366 | set_bit(GIF_SW_PAGED, &ip->i_flags); | |
367 | ||
461cb419 | 368 | if (!gfs2_write_alloc_required(ip, pos, PAGE_CACHE_SIZE)) |
3cc3f710 | 369 | goto out_unlock; |
6dbd8224 | 370 | ret = -ENOMEM; |
3cc3f710 | 371 | al = gfs2_alloc_get(ip); |
6dbd8224 SW |
372 | if (al == NULL) |
373 | goto out_unlock; | |
374 | ||
d82661d9 | 375 | ret = gfs2_quota_lock_check(ip); |
3cc3f710 SW |
376 | if (ret) |
377 | goto out_alloc_put; | |
7ed122e4 | 378 | gfs2_write_calc_reserv(ip, PAGE_CACHE_SIZE, &data_blocks, &ind_blocks); |
3cc3f710 SW |
379 | al->al_requested = data_blocks + ind_blocks; |
380 | ret = gfs2_inplace_reserve(ip); | |
381 | if (ret) | |
382 | goto out_quota_unlock; | |
383 | ||
384 | rblocks = RES_DINODE + ind_blocks; | |
385 | if (gfs2_is_jdata(ip)) | |
386 | rblocks += data_blocks ? data_blocks : 1; | |
bf97b673 | 387 | if (ind_blocks || data_blocks) { |
3cc3f710 | 388 | rblocks += RES_STATFS + RES_QUOTA; |
bf97b673 BM |
389 | rblocks += gfs2_rg_blocks(al); |
390 | } | |
3cc3f710 SW |
391 | ret = gfs2_trans_begin(sdp, rblocks, 0); |
392 | if (ret) | |
393 | goto out_trans_fail; | |
394 | ||
395 | lock_page(page); | |
396 | ret = -EINVAL; | |
397 | last_index = ip->i_inode.i_size >> PAGE_CACHE_SHIFT; | |
398 | if (page->index > last_index) | |
399 | goto out_unlock_page; | |
b7fe2e39 | 400 | ret = 0; |
3cc3f710 SW |
401 | if (!PageUptodate(page) || page->mapping != ip->i_inode.i_mapping) |
402 | goto out_unlock_page; | |
403 | if (gfs2_is_stuffed(ip)) { | |
404 | ret = gfs2_unstuff_dinode(ip, page); | |
405 | if (ret) | |
406 | goto out_unlock_page; | |
407 | } | |
408 | ret = gfs2_allocate_page_backing(page); | |
409 | ||
410 | out_unlock_page: | |
411 | unlock_page(page); | |
412 | gfs2_trans_end(sdp); | |
413 | out_trans_fail: | |
414 | gfs2_inplace_release(ip); | |
415 | out_quota_unlock: | |
416 | gfs2_quota_unlock(ip); | |
417 | out_alloc_put: | |
418 | gfs2_alloc_put(ip); | |
419 | out_unlock: | |
420 | gfs2_glock_dq(&gh); | |
421 | out: | |
422 | gfs2_holder_uninit(&gh); | |
e56985da SW |
423 | if (ret == -ENOMEM) |
424 | ret = VM_FAULT_OOM; | |
425 | else if (ret) | |
c2ec175c | 426 | ret = VM_FAULT_SIGBUS; |
3cc3f710 SW |
427 | return ret; |
428 | } | |
429 | ||
f0f37e2f | 430 | static const struct vm_operations_struct gfs2_vm_ops = { |
3cc3f710 SW |
431 | .fault = filemap_fault, |
432 | .page_mkwrite = gfs2_page_mkwrite, | |
433 | }; | |
434 | ||
b3b94faa DT |
435 | /** |
436 | * gfs2_mmap - | |
437 | * @file: The file to map | |
438 | * @vma: The VMA which described the mapping | |
439 | * | |
48bf2b17 SW |
440 | * There is no need to get a lock here unless we should be updating |
441 | * atime. We ignore any locking errors since the only consequence is | |
442 | * a missed atime update (which will just be deferred until later). | |
443 | * | |
444 | * Returns: 0 | |
b3b94faa DT |
445 | */ |
446 | ||
447 | static int gfs2_mmap(struct file *file, struct vm_area_struct *vma) | |
448 | { | |
feaa7bba | 449 | struct gfs2_inode *ip = GFS2_I(file->f_mapping->host); |
b3b94faa | 450 | |
48bf2b17 SW |
451 | if (!(file->f_flags & O_NOATIME)) { |
452 | struct gfs2_holder i_gh; | |
453 | int error; | |
b3b94faa | 454 | |
48bf2b17 SW |
455 | gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &i_gh); |
456 | error = gfs2_glock_nq(&i_gh); | |
457 | file_accessed(file); | |
458 | if (error == 0) | |
459 | gfs2_glock_dq_uninit(&i_gh); | |
460 | } | |
3cc3f710 | 461 | vma->vm_ops = &gfs2_vm_ops; |
48bf2b17 | 462 | vma->vm_flags |= VM_CAN_NONLINEAR; |
b3b94faa | 463 | |
48bf2b17 | 464 | return 0; |
b3b94faa DT |
465 | } |
466 | ||
467 | /** | |
468 | * gfs2_open - open a file | |
469 | * @inode: the inode to open | |
470 | * @file: the struct file for this opening | |
471 | * | |
472 | * Returns: errno | |
473 | */ | |
474 | ||
475 | static int gfs2_open(struct inode *inode, struct file *file) | |
476 | { | |
feaa7bba | 477 | struct gfs2_inode *ip = GFS2_I(inode); |
b3b94faa DT |
478 | struct gfs2_holder i_gh; |
479 | struct gfs2_file *fp; | |
480 | int error; | |
481 | ||
b3b94faa DT |
482 | fp = kzalloc(sizeof(struct gfs2_file), GFP_KERNEL); |
483 | if (!fp) | |
484 | return -ENOMEM; | |
485 | ||
f55ab26a | 486 | mutex_init(&fp->f_fl_mutex); |
b3b94faa | 487 | |
feaa7bba | 488 | gfs2_assert_warn(GFS2_SB(inode), !file->private_data); |
5c676f6d | 489 | file->private_data = fp; |
b3b94faa | 490 | |
b60623c2 | 491 | if (S_ISREG(ip->i_inode.i_mode)) { |
b3b94faa DT |
492 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, |
493 | &i_gh); | |
494 | if (error) | |
495 | goto fail; | |
496 | ||
497 | if (!(file->f_flags & O_LARGEFILE) && | |
a2e0f799 | 498 | i_size_read(inode) > MAX_NON_LFS) { |
a9c62a18 | 499 | error = -EOVERFLOW; |
b3b94faa DT |
500 | goto fail_gunlock; |
501 | } | |
502 | ||
b3b94faa DT |
503 | gfs2_glock_dq_uninit(&i_gh); |
504 | } | |
505 | ||
506 | return 0; | |
507 | ||
420b9e5e | 508 | fail_gunlock: |
b3b94faa | 509 | gfs2_glock_dq_uninit(&i_gh); |
420b9e5e | 510 | fail: |
5c676f6d | 511 | file->private_data = NULL; |
b3b94faa | 512 | kfree(fp); |
b3b94faa DT |
513 | return error; |
514 | } | |
515 | ||
516 | /** | |
517 | * gfs2_close - called to close a struct file | |
518 | * @inode: the inode the struct file belongs to | |
519 | * @file: the struct file being closed | |
520 | * | |
521 | * Returns: errno | |
522 | */ | |
523 | ||
524 | static int gfs2_close(struct inode *inode, struct file *file) | |
525 | { | |
5c676f6d | 526 | struct gfs2_sbd *sdp = inode->i_sb->s_fs_info; |
b3b94faa DT |
527 | struct gfs2_file *fp; |
528 | ||
5c676f6d SW |
529 | fp = file->private_data; |
530 | file->private_data = NULL; | |
b3b94faa DT |
531 | |
532 | if (gfs2_assert_warn(sdp, fp)) | |
533 | return -EIO; | |
534 | ||
535 | kfree(fp); | |
536 | ||
537 | return 0; | |
538 | } | |
539 | ||
540 | /** | |
541 | * gfs2_fsync - sync the dirty data for a file (across the cluster) | |
542 | * @file: the file that points to the dentry (we ignore this) | |
543 | * @dentry: the dentry that points to the inode to sync | |
544 | * | |
33c3de32 SW |
545 | * The VFS will flush "normal" data for us. We only need to worry |
546 | * about metadata here. For journaled data, we just do a log flush | |
547 | * as we can't avoid it. Otherwise we can just bale out if datasync | |
548 | * is set. For stuffed inodes we must flush the log in order to | |
549 | * ensure that all data is on disk. | |
550 | * | |
34126f9f SW |
551 | * The call to write_inode_now() is there to write back metadata and |
552 | * the inode itself. It does also try and write the data, but thats | |
553 | * (hopefully) a no-op due to the VFS having already called filemap_fdatawrite() | |
554 | * for us. | |
555 | * | |
b3b94faa DT |
556 | * Returns: errno |
557 | */ | |
558 | ||
7ea80859 | 559 | static int gfs2_fsync(struct file *file, int datasync) |
b3b94faa | 560 | { |
7ea80859 | 561 | struct inode *inode = file->f_mapping->host; |
33c3de32 SW |
562 | int sync_state = inode->i_state & (I_DIRTY_SYNC|I_DIRTY_DATASYNC); |
563 | int ret = 0; | |
33c3de32 SW |
564 | |
565 | if (gfs2_is_jdata(GFS2_I(inode))) { | |
566 | gfs2_log_flush(GFS2_SB(inode), GFS2_I(inode)->i_gl); | |
567 | return 0; | |
568 | } | |
b3b94faa | 569 | |
33c3de32 SW |
570 | if (sync_state != 0) { |
571 | if (!datasync) | |
34126f9f | 572 | ret = write_inode_now(inode, 0); |
b3b94faa | 573 | |
33c3de32 SW |
574 | if (gfs2_is_stuffed(GFS2_I(inode))) |
575 | gfs2_log_flush(GFS2_SB(inode), GFS2_I(inode)->i_gl); | |
576 | } | |
577 | ||
578 | return ret; | |
b3b94faa DT |
579 | } |
580 | ||
56aa616a SW |
581 | /** |
582 | * gfs2_file_aio_write - Perform a write to a file | |
583 | * @iocb: The io context | |
584 | * @iov: The data to write | |
585 | * @nr_segs: Number of @iov segments | |
586 | * @pos: The file position | |
587 | * | |
588 | * We have to do a lock/unlock here to refresh the inode size for | |
589 | * O_APPEND writes, otherwise we can land up writing at the wrong | |
590 | * offset. There is still a race, but provided the app is using its | |
591 | * own file locking, this will make O_APPEND work as expected. | |
592 | * | |
593 | */ | |
594 | ||
595 | static ssize_t gfs2_file_aio_write(struct kiocb *iocb, const struct iovec *iov, | |
596 | unsigned long nr_segs, loff_t pos) | |
597 | { | |
598 | struct file *file = iocb->ki_filp; | |
599 | ||
600 | if (file->f_flags & O_APPEND) { | |
601 | struct dentry *dentry = file->f_dentry; | |
602 | struct gfs2_inode *ip = GFS2_I(dentry->d_inode); | |
603 | struct gfs2_holder gh; | |
604 | int ret; | |
605 | ||
606 | ret = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, 0, &gh); | |
607 | if (ret) | |
608 | return ret; | |
609 | gfs2_glock_dq_uninit(&gh); | |
610 | } | |
611 | ||
612 | return generic_file_aio_write(iocb, iov, nr_segs, pos); | |
613 | } | |
614 | ||
2fe17c10 CH |
615 | static void empty_write_end(struct page *page, unsigned from, |
616 | unsigned to) | |
617 | { | |
618 | struct gfs2_inode *ip = GFS2_I(page->mapping->host); | |
619 | ||
620 | page_zero_new_buffers(page, from, to); | |
621 | flush_dcache_page(page); | |
622 | mark_page_accessed(page); | |
623 | ||
624 | if (!gfs2_is_writeback(ip)) | |
625 | gfs2_page_add_databufs(ip, page, from, to); | |
626 | ||
627 | block_commit_write(page, from, to); | |
628 | } | |
629 | ||
630 | static int write_empty_blocks(struct page *page, unsigned from, unsigned to) | |
631 | { | |
632 | unsigned start, end, next; | |
633 | struct buffer_head *bh, *head; | |
634 | int error; | |
635 | ||
636 | if (!page_has_buffers(page)) { | |
637 | error = __block_write_begin(page, from, to - from, gfs2_block_map); | |
638 | if (unlikely(error)) | |
639 | return error; | |
640 | ||
641 | empty_write_end(page, from, to); | |
642 | return 0; | |
643 | } | |
644 | ||
645 | bh = head = page_buffers(page); | |
646 | next = end = 0; | |
647 | while (next < from) { | |
648 | next += bh->b_size; | |
649 | bh = bh->b_this_page; | |
650 | } | |
651 | start = next; | |
652 | do { | |
653 | next += bh->b_size; | |
654 | if (buffer_mapped(bh)) { | |
655 | if (end) { | |
656 | error = __block_write_begin(page, start, end - start, | |
657 | gfs2_block_map); | |
658 | if (unlikely(error)) | |
659 | return error; | |
660 | empty_write_end(page, start, end); | |
661 | end = 0; | |
662 | } | |
663 | start = next; | |
664 | } | |
665 | else | |
666 | end = next; | |
667 | bh = bh->b_this_page; | |
668 | } while (next < to); | |
669 | ||
670 | if (end) { | |
671 | error = __block_write_begin(page, start, end - start, gfs2_block_map); | |
672 | if (unlikely(error)) | |
673 | return error; | |
674 | empty_write_end(page, start, end); | |
675 | } | |
676 | ||
677 | return 0; | |
678 | } | |
679 | ||
680 | static int fallocate_chunk(struct inode *inode, loff_t offset, loff_t len, | |
681 | int mode) | |
682 | { | |
683 | struct gfs2_inode *ip = GFS2_I(inode); | |
684 | struct buffer_head *dibh; | |
685 | int error; | |
686 | u64 start = offset >> PAGE_CACHE_SHIFT; | |
687 | unsigned int start_offset = offset & ~PAGE_CACHE_MASK; | |
688 | u64 end = (offset + len - 1) >> PAGE_CACHE_SHIFT; | |
689 | pgoff_t curr; | |
690 | struct page *page; | |
691 | unsigned int end_offset = (offset + len) & ~PAGE_CACHE_MASK; | |
692 | unsigned int from, to; | |
693 | ||
694 | if (!end_offset) | |
695 | end_offset = PAGE_CACHE_SIZE; | |
696 | ||
697 | error = gfs2_meta_inode_buffer(ip, &dibh); | |
698 | if (unlikely(error)) | |
699 | goto out; | |
700 | ||
701 | gfs2_trans_add_bh(ip->i_gl, dibh, 1); | |
702 | ||
703 | if (gfs2_is_stuffed(ip)) { | |
704 | error = gfs2_unstuff_dinode(ip, NULL); | |
705 | if (unlikely(error)) | |
706 | goto out; | |
707 | } | |
708 | ||
709 | curr = start; | |
710 | offset = start << PAGE_CACHE_SHIFT; | |
711 | from = start_offset; | |
712 | to = PAGE_CACHE_SIZE; | |
713 | while (curr <= end) { | |
714 | page = grab_cache_page_write_begin(inode->i_mapping, curr, | |
715 | AOP_FLAG_NOFS); | |
716 | if (unlikely(!page)) { | |
717 | error = -ENOMEM; | |
718 | goto out; | |
719 | } | |
720 | ||
721 | if (curr == end) | |
722 | to = end_offset; | |
723 | error = write_empty_blocks(page, from, to); | |
724 | if (!error && offset + to > inode->i_size && | |
725 | !(mode & FALLOC_FL_KEEP_SIZE)) { | |
726 | i_size_write(inode, offset + to); | |
727 | } | |
728 | unlock_page(page); | |
729 | page_cache_release(page); | |
730 | if (error) | |
731 | goto out; | |
732 | curr++; | |
733 | offset += PAGE_CACHE_SIZE; | |
734 | from = 0; | |
735 | } | |
736 | ||
737 | gfs2_dinode_out(ip, dibh->b_data); | |
738 | mark_inode_dirty(inode); | |
739 | ||
740 | brelse(dibh); | |
741 | ||
742 | out: | |
743 | return error; | |
744 | } | |
745 | ||
746 | static void calc_max_reserv(struct gfs2_inode *ip, loff_t max, loff_t *len, | |
747 | unsigned int *data_blocks, unsigned int *ind_blocks) | |
748 | { | |
749 | const struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); | |
750 | unsigned int max_blocks = ip->i_alloc->al_rgd->rd_free_clone; | |
751 | unsigned int tmp, max_data = max_blocks - 3 * (sdp->sd_max_height - 1); | |
752 | ||
753 | for (tmp = max_data; tmp > sdp->sd_diptrs;) { | |
754 | tmp = DIV_ROUND_UP(tmp, sdp->sd_inptrs); | |
755 | max_data -= tmp; | |
756 | } | |
757 | /* This calculation isn't the exact reverse of gfs2_write_calc_reserve, | |
758 | so it might end up with fewer data blocks */ | |
759 | if (max_data <= *data_blocks) | |
760 | return; | |
761 | *data_blocks = max_data; | |
762 | *ind_blocks = max_blocks - max_data; | |
763 | *len = ((loff_t)max_data - 3) << sdp->sd_sb.sb_bsize_shift; | |
764 | if (*len > max) { | |
765 | *len = max; | |
766 | gfs2_write_calc_reserv(ip, max, data_blocks, ind_blocks); | |
767 | } | |
768 | } | |
769 | ||
770 | static long gfs2_fallocate(struct file *file, int mode, loff_t offset, | |
771 | loff_t len) | |
772 | { | |
773 | struct inode *inode = file->f_path.dentry->d_inode; | |
774 | struct gfs2_sbd *sdp = GFS2_SB(inode); | |
775 | struct gfs2_inode *ip = GFS2_I(inode); | |
776 | unsigned int data_blocks = 0, ind_blocks = 0, rblocks; | |
777 | loff_t bytes, max_bytes; | |
778 | struct gfs2_alloc *al; | |
779 | int error; | |
780 | loff_t next = (offset + len - 1) >> sdp->sd_sb.sb_bsize_shift; | |
781 | next = (next + 1) << sdp->sd_sb.sb_bsize_shift; | |
782 | ||
783 | /* We only support the FALLOC_FL_KEEP_SIZE mode */ | |
784 | if (mode & ~FALLOC_FL_KEEP_SIZE) | |
785 | return -EOPNOTSUPP; | |
786 | ||
787 | offset = (offset >> sdp->sd_sb.sb_bsize_shift) << | |
788 | sdp->sd_sb.sb_bsize_shift; | |
789 | ||
790 | len = next - offset; | |
791 | bytes = sdp->sd_max_rg_data * sdp->sd_sb.sb_bsize / 2; | |
792 | if (!bytes) | |
793 | bytes = UINT_MAX; | |
794 | ||
795 | gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &ip->i_gh); | |
796 | error = gfs2_glock_nq(&ip->i_gh); | |
797 | if (unlikely(error)) | |
798 | goto out_uninit; | |
799 | ||
800 | if (!gfs2_write_alloc_required(ip, offset, len)) | |
801 | goto out_unlock; | |
802 | ||
803 | while (len > 0) { | |
804 | if (len < bytes) | |
805 | bytes = len; | |
806 | al = gfs2_alloc_get(ip); | |
807 | if (!al) { | |
808 | error = -ENOMEM; | |
809 | goto out_unlock; | |
810 | } | |
811 | ||
812 | error = gfs2_quota_lock_check(ip); | |
813 | if (error) | |
814 | goto out_alloc_put; | |
815 | ||
816 | retry: | |
817 | gfs2_write_calc_reserv(ip, bytes, &data_blocks, &ind_blocks); | |
818 | ||
819 | al->al_requested = data_blocks + ind_blocks; | |
820 | error = gfs2_inplace_reserve(ip); | |
821 | if (error) { | |
822 | if (error == -ENOSPC && bytes > sdp->sd_sb.sb_bsize) { | |
823 | bytes >>= 1; | |
824 | goto retry; | |
825 | } | |
826 | goto out_qunlock; | |
827 | } | |
828 | max_bytes = bytes; | |
829 | calc_max_reserv(ip, len, &max_bytes, &data_blocks, &ind_blocks); | |
830 | al->al_requested = data_blocks + ind_blocks; | |
831 | ||
832 | rblocks = RES_DINODE + ind_blocks + RES_STATFS + RES_QUOTA + | |
833 | RES_RG_HDR + gfs2_rg_blocks(al); | |
834 | if (gfs2_is_jdata(ip)) | |
835 | rblocks += data_blocks ? data_blocks : 1; | |
836 | ||
837 | error = gfs2_trans_begin(sdp, rblocks, | |
838 | PAGE_CACHE_SIZE/sdp->sd_sb.sb_bsize); | |
839 | if (error) | |
840 | goto out_trans_fail; | |
841 | ||
842 | error = fallocate_chunk(inode, offset, max_bytes, mode); | |
843 | gfs2_trans_end(sdp); | |
844 | ||
845 | if (error) | |
846 | goto out_trans_fail; | |
847 | ||
848 | len -= max_bytes; | |
849 | offset += max_bytes; | |
850 | gfs2_inplace_release(ip); | |
851 | gfs2_quota_unlock(ip); | |
852 | gfs2_alloc_put(ip); | |
853 | } | |
854 | goto out_unlock; | |
855 | ||
856 | out_trans_fail: | |
857 | gfs2_inplace_release(ip); | |
858 | out_qunlock: | |
859 | gfs2_quota_unlock(ip); | |
860 | out_alloc_put: | |
861 | gfs2_alloc_put(ip); | |
862 | out_unlock: | |
863 | gfs2_glock_dq(&ip->i_gh); | |
864 | out_uninit: | |
865 | gfs2_holder_uninit(&ip->i_gh); | |
866 | return error; | |
867 | } | |
868 | ||
f057f6cd SW |
869 | #ifdef CONFIG_GFS2_FS_LOCKING_DLM |
870 | ||
60446067 ME |
871 | /** |
872 | * gfs2_setlease - acquire/release a file lease | |
873 | * @file: the file pointer | |
874 | * @arg: lease type | |
875 | * @fl: file lock | |
876 | * | |
f057f6cd SW |
877 | * We don't currently have a way to enforce a lease across the whole |
878 | * cluster; until we do, disable leases (by just returning -EINVAL), | |
879 | * unless the administrator has requested purely local locking. | |
880 | * | |
b89f4321 AB |
881 | * Locking: called under lock_flocks |
882 | * | |
60446067 ME |
883 | * Returns: errno |
884 | */ | |
885 | ||
886 | static int gfs2_setlease(struct file *file, long arg, struct file_lock **fl) | |
887 | { | |
f057f6cd | 888 | return -EINVAL; |
da755fdb SW |
889 | } |
890 | ||
b3b94faa DT |
891 | /** |
892 | * gfs2_lock - acquire/release a posix lock on a file | |
893 | * @file: the file pointer | |
894 | * @cmd: either modify or retrieve lock state, possibly wait | |
895 | * @fl: type and range of lock | |
896 | * | |
897 | * Returns: errno | |
898 | */ | |
899 | ||
900 | static int gfs2_lock(struct file *file, int cmd, struct file_lock *fl) | |
901 | { | |
feaa7bba SW |
902 | struct gfs2_inode *ip = GFS2_I(file->f_mapping->host); |
903 | struct gfs2_sbd *sdp = GFS2_SB(file->f_mapping->host); | |
f057f6cd | 904 | struct lm_lockstruct *ls = &sdp->sd_lockstruct; |
b3b94faa | 905 | |
b3b94faa DT |
906 | if (!(fl->fl_flags & FL_POSIX)) |
907 | return -ENOLCK; | |
720e7749 | 908 | if (__mandatory_lock(&ip->i_inode) && fl->fl_type != F_UNLCK) |
b3b94faa DT |
909 | return -ENOLCK; |
910 | ||
586759f0 ME |
911 | if (cmd == F_CANCELLK) { |
912 | /* Hack: */ | |
913 | cmd = F_SETLK; | |
914 | fl->fl_type = F_UNLCK; | |
915 | } | |
f057f6cd SW |
916 | if (unlikely(test_bit(SDF_SHUTDOWN, &sdp->sd_flags))) |
917 | return -EIO; | |
b3b94faa | 918 | if (IS_GETLK(cmd)) |
f057f6cd | 919 | return dlm_posix_get(ls->ls_dlm, ip->i_no_addr, file, fl); |
b3b94faa | 920 | else if (fl->fl_type == F_UNLCK) |
f057f6cd | 921 | return dlm_posix_unlock(ls->ls_dlm, ip->i_no_addr, file, fl); |
b3b94faa | 922 | else |
f057f6cd | 923 | return dlm_posix_lock(ls->ls_dlm, ip->i_no_addr, file, cmd, fl); |
b3b94faa DT |
924 | } |
925 | ||
b3b94faa DT |
926 | static int do_flock(struct file *file, int cmd, struct file_lock *fl) |
927 | { | |
5c676f6d | 928 | struct gfs2_file *fp = file->private_data; |
b3b94faa | 929 | struct gfs2_holder *fl_gh = &fp->f_fl_gh; |
81454098 | 930 | struct gfs2_inode *ip = GFS2_I(file->f_path.dentry->d_inode); |
b3b94faa DT |
931 | struct gfs2_glock *gl; |
932 | unsigned int state; | |
933 | int flags; | |
934 | int error = 0; | |
935 | ||
936 | state = (fl->fl_type == F_WRLCK) ? LM_ST_EXCLUSIVE : LM_ST_SHARED; | |
6802e340 | 937 | flags = (IS_SETLKW(cmd) ? 0 : LM_FLAG_TRY) | GL_EXACT | GL_NOCACHE; |
b3b94faa | 938 | |
f55ab26a | 939 | mutex_lock(&fp->f_fl_mutex); |
b3b94faa DT |
940 | |
941 | gl = fl_gh->gh_gl; | |
942 | if (gl) { | |
943 | if (fl_gh->gh_state == state) | |
944 | goto out; | |
b3b94faa | 945 | flock_lock_file_wait(file, |
907b9bce | 946 | &(struct file_lock){.fl_type = F_UNLCK}); |
b4c20166 AD |
947 | gfs2_glock_dq_wait(fl_gh); |
948 | gfs2_holder_reinit(state, flags, fl_gh); | |
b3b94faa | 949 | } else { |
6802e340 SW |
950 | error = gfs2_glock_get(GFS2_SB(&ip->i_inode), ip->i_no_addr, |
951 | &gfs2_flock_glops, CREATE, &gl); | |
b3b94faa DT |
952 | if (error) |
953 | goto out; | |
b4c20166 AD |
954 | gfs2_holder_init(gl, state, flags, fl_gh); |
955 | gfs2_glock_put(gl); | |
b3b94faa | 956 | } |
b3b94faa DT |
957 | error = gfs2_glock_nq(fl_gh); |
958 | if (error) { | |
959 | gfs2_holder_uninit(fl_gh); | |
960 | if (error == GLR_TRYFAILED) | |
961 | error = -EAGAIN; | |
962 | } else { | |
963 | error = flock_lock_file_wait(file, fl); | |
feaa7bba | 964 | gfs2_assert_warn(GFS2_SB(&ip->i_inode), !error); |
b3b94faa DT |
965 | } |
966 | ||
420b9e5e | 967 | out: |
f55ab26a | 968 | mutex_unlock(&fp->f_fl_mutex); |
b3b94faa DT |
969 | return error; |
970 | } | |
971 | ||
972 | static void do_unflock(struct file *file, struct file_lock *fl) | |
973 | { | |
5c676f6d | 974 | struct gfs2_file *fp = file->private_data; |
b3b94faa DT |
975 | struct gfs2_holder *fl_gh = &fp->f_fl_gh; |
976 | ||
f55ab26a | 977 | mutex_lock(&fp->f_fl_mutex); |
b3b94faa DT |
978 | flock_lock_file_wait(file, fl); |
979 | if (fl_gh->gh_gl) | |
980 | gfs2_glock_dq_uninit(fl_gh); | |
f55ab26a | 981 | mutex_unlock(&fp->f_fl_mutex); |
b3b94faa DT |
982 | } |
983 | ||
984 | /** | |
985 | * gfs2_flock - acquire/release a flock lock on a file | |
986 | * @file: the file pointer | |
987 | * @cmd: either modify or retrieve lock state, possibly wait | |
988 | * @fl: type and range of lock | |
989 | * | |
990 | * Returns: errno | |
991 | */ | |
992 | ||
993 | static int gfs2_flock(struct file *file, int cmd, struct file_lock *fl) | |
994 | { | |
b3b94faa DT |
995 | if (!(fl->fl_flags & FL_FLOCK)) |
996 | return -ENOLCK; | |
a12af1eb AD |
997 | if (fl->fl_type & LOCK_MAND) |
998 | return -EOPNOTSUPP; | |
b3b94faa | 999 | |
b3b94faa DT |
1000 | if (fl->fl_type == F_UNLCK) { |
1001 | do_unflock(file, fl); | |
1002 | return 0; | |
d00223f1 | 1003 | } else { |
b3b94faa | 1004 | return do_flock(file, cmd, fl); |
d00223f1 | 1005 | } |
b3b94faa DT |
1006 | } |
1007 | ||
10d21988 | 1008 | const struct file_operations gfs2_file_fops = { |
26c1a574 | 1009 | .llseek = gfs2_llseek, |
d00223f1 | 1010 | .read = do_sync_read, |
26c1a574 | 1011 | .aio_read = generic_file_aio_read, |
d00223f1 | 1012 | .write = do_sync_write, |
56aa616a | 1013 | .aio_write = gfs2_file_aio_write, |
26c1a574 SW |
1014 | .unlocked_ioctl = gfs2_ioctl, |
1015 | .mmap = gfs2_mmap, | |
1016 | .open = gfs2_open, | |
1017 | .release = gfs2_close, | |
1018 | .fsync = gfs2_fsync, | |
1019 | .lock = gfs2_lock, | |
26c1a574 SW |
1020 | .flock = gfs2_flock, |
1021 | .splice_read = generic_file_splice_read, | |
1022 | .splice_write = generic_file_splice_write, | |
60446067 | 1023 | .setlease = gfs2_setlease, |
2fe17c10 | 1024 | .fallocate = gfs2_fallocate, |
b3b94faa DT |
1025 | }; |
1026 | ||
10d21988 | 1027 | const struct file_operations gfs2_dir_fops = { |
26c1a574 SW |
1028 | .readdir = gfs2_readdir, |
1029 | .unlocked_ioctl = gfs2_ioctl, | |
1030 | .open = gfs2_open, | |
1031 | .release = gfs2_close, | |
1032 | .fsync = gfs2_fsync, | |
1033 | .lock = gfs2_lock, | |
1034 | .flock = gfs2_flock, | |
6038f373 | 1035 | .llseek = default_llseek, |
b3b94faa DT |
1036 | }; |
1037 | ||
f057f6cd SW |
1038 | #endif /* CONFIG_GFS2_FS_LOCKING_DLM */ |
1039 | ||
10d21988 | 1040 | const struct file_operations gfs2_file_fops_nolock = { |
c97bfe43 WC |
1041 | .llseek = gfs2_llseek, |
1042 | .read = do_sync_read, | |
1043 | .aio_read = generic_file_aio_read, | |
1044 | .write = do_sync_write, | |
56aa616a | 1045 | .aio_write = gfs2_file_aio_write, |
c97bfe43 WC |
1046 | .unlocked_ioctl = gfs2_ioctl, |
1047 | .mmap = gfs2_mmap, | |
1048 | .open = gfs2_open, | |
1049 | .release = gfs2_close, | |
1050 | .fsync = gfs2_fsync, | |
1051 | .splice_read = generic_file_splice_read, | |
1052 | .splice_write = generic_file_splice_write, | |
f057f6cd | 1053 | .setlease = generic_setlease, |
2fe17c10 | 1054 | .fallocate = gfs2_fallocate, |
c97bfe43 WC |
1055 | }; |
1056 | ||
10d21988 | 1057 | const struct file_operations gfs2_dir_fops_nolock = { |
c97bfe43 WC |
1058 | .readdir = gfs2_readdir, |
1059 | .unlocked_ioctl = gfs2_ioctl, | |
1060 | .open = gfs2_open, | |
1061 | .release = gfs2_close, | |
1062 | .fsync = gfs2_fsync, | |
6038f373 | 1063 | .llseek = default_llseek, |
c97bfe43 WC |
1064 | }; |
1065 |