blob: f4c0086655c4bf448d76e017d2d6e47e0f2f6de4 [file] [log] [blame]
Jaegeuk Kim0a8165d2012-11-29 13:28:09 +09001/*
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +09002 * fs/f2fs/file.c
3 *
4 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
5 * http://www.samsung.com/
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 */
11#include <linux/fs.h>
12#include <linux/f2fs_fs.h>
13#include <linux/stat.h>
14#include <linux/buffer_head.h>
15#include <linux/writeback.h>
Jaegeuk Kimae51fb32013-03-16 11:13:04 +090016#include <linux/blkdev.h>
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +090017#include <linux/falloc.h>
18#include <linux/types.h>
Namjae Jeone9750822013-02-04 23:41:41 +090019#include <linux/compat.h>
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +090020#include <linux/uaccess.h>
21#include <linux/mount.h>
Jaegeuk Kim7f7670f2014-04-28 18:12:36 +090022#include <linux/pagevec.h>
Andy Shevchenko8da4b8c2016-05-20 17:01:00 -070023#include <linux/uuid.h>
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +090024
25#include "f2fs.h"
26#include "node.h"
27#include "segment.h"
28#include "xattr.h"
29#include "acl.h"
Chao Yuc1c1b582015-07-10 18:08:10 +080030#include "gc.h"
Jaegeuk Kimdb9f7c12014-12-17 20:04:08 -080031#include "trace.h"
Namjae Jeona2a4a7e2013-04-20 01:28:40 +090032#include <trace/events/f2fs.h>
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +090033
34static int f2fs_vm_page_mkwrite(struct vm_area_struct *vma,
35 struct vm_fault *vmf)
36{
37 struct page *page = vmf->page;
Al Viro6131ffa2013-02-27 16:59:05 -050038 struct inode *inode = file_inode(vma->vm_file);
Jaegeuk Kim40813632014-09-02 15:31:18 -070039 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +090040 struct dnode_of_data dn;
Gu Zhenge4795562013-09-27 18:08:30 +080041 int err;
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +090042
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +090043 sb_start_pagefault(inode->i_sb);
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -070044
45 f2fs_bug_on(sbi, f2fs_has_inline_data(inode));
Jaegeuk Kimb067ba12014-08-07 16:32:25 -070046
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +090047 /* block allocation */
Gu Zhenge4795562013-09-27 18:08:30 +080048 f2fs_lock_op(sbi);
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -070049 set_new_dnode(&dn, inode, NULL, NULL, 0);
Jaegeuk Kim9ba69cf2014-10-17 20:33:55 -070050 err = f2fs_reserve_block(&dn, page->index);
51 if (err) {
52 f2fs_unlock_op(sbi);
53 goto out;
54 }
55 f2fs_put_dnode(&dn);
56 f2fs_unlock_op(sbi);
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +090057
Jaegeuk Kim2c4db1a2016-01-07 14:15:04 -080058 f2fs_balance_fs(sbi, dn.node_changed);
Jaegeuk Kim2a340762015-12-22 13:23:35 -080059
Namjae Jeon9851e6e2013-04-28 09:04:18 +090060 file_update_time(vma->vm_file);
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +090061 lock_page(page);
Jaegeuk Kim6bacf522013-12-06 15:00:58 +090062 if (unlikely(page->mapping != inode->i_mapping ||
Namjae Jeon9851e6e2013-04-28 09:04:18 +090063 page_offset(page) > i_size_read(inode) ||
Jaegeuk Kim6bacf522013-12-06 15:00:58 +090064 !PageUptodate(page))) {
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +090065 unlock_page(page);
66 err = -EFAULT;
67 goto out;
68 }
69
70 /*
71 * check to see if the page is mapped already (no holes)
72 */
73 if (PageMappedToDisk(page))
Namjae Jeon9851e6e2013-04-28 09:04:18 +090074 goto mapped;
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +090075
76 /* page is wholly or partially inside EOF */
Kirill A. Shutemov09cbfea2016-04-01 15:29:47 +030077 if (((loff_t)(page->index + 1) << PAGE_SHIFT) >
Chao Yu9edcdab2015-09-11 14:43:52 +080078 i_size_read(inode)) {
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +090079 unsigned offset;
Kirill A. Shutemov09cbfea2016-04-01 15:29:47 +030080 offset = i_size_read(inode) & ~PAGE_MASK;
81 zero_user_segment(page, offset, PAGE_SIZE);
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +090082 }
83 set_page_dirty(page);
84 SetPageUptodate(page);
85
Jaegeuk Kime943a102013-10-25 14:26:31 +090086 trace_f2fs_vm_page_mkwrite(page, DATA);
Namjae Jeon9851e6e2013-04-28 09:04:18 +090087mapped:
88 /* fill the page */
Jaegeuk Kimfec1d652016-01-20 23:43:51 +080089 f2fs_wait_on_page_writeback(page, DATA, false);
Chao Yu08b39fb2015-10-08 13:27:34 +080090
91 /* wait for GCed encrypted page writeback */
92 if (f2fs_encrypted_inode(inode) && S_ISREG(inode->i_mode))
93 f2fs_wait_on_encrypted_page_writeback(sbi, dn.data_blkaddr);
94
Chao Yu5b339122015-07-13 17:43:19 +080095 /* if gced page is attached, don't write to cold segment */
96 clear_cold_data(page);
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +090097out:
98 sb_end_pagefault(inode->i_sb);
Jaegeuk Kimd0239e12016-01-08 16:57:48 -080099 f2fs_update_time(sbi, REQ_TIME);
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900100 return block_page_mkwrite_return(err);
101}
102
103static const struct vm_operations_struct f2fs_file_vm_ops = {
Jaegeuk Kim692bb552013-01-17 18:37:41 +0900104 .fault = filemap_fault,
Kirill A. Shutemovf1820362014-04-07 15:37:19 -0700105 .map_pages = filemap_map_pages,
Jaegeuk Kim692bb552013-01-17 18:37:41 +0900106 .page_mkwrite = f2fs_vm_page_mkwrite,
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900107};
108
Jaegeuk Kim354a3392013-06-14 08:52:35 +0900109static int get_parent_ino(struct inode *inode, nid_t *pino)
110{
111 struct dentry *dentry;
112
113 inode = igrab(inode);
114 dentry = d_find_any_alias(inode);
115 iput(inode);
116 if (!dentry)
117 return 0;
118
Jaegeuk Kime7d55452015-04-29 17:02:18 -0700119 if (update_dent_inode(inode, inode, &dentry->d_name)) {
Jaegeuk Kimf0947e52013-07-22 22:12:56 +0900120 dput(dentry);
121 return 0;
122 }
Jaegeuk Kim354a3392013-06-14 08:52:35 +0900123
Jaegeuk Kimf0947e52013-07-22 22:12:56 +0900124 *pino = parent_ino(dentry);
125 dput(dentry);
Jaegeuk Kim354a3392013-06-14 08:52:35 +0900126 return 1;
127}
128
Chao Yu9d1589e2014-08-20 18:37:35 +0800129static inline bool need_do_checkpoint(struct inode *inode)
130{
Jaegeuk Kim40813632014-09-02 15:31:18 -0700131 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
Chao Yu9d1589e2014-08-20 18:37:35 +0800132 bool need_cp = false;
133
134 if (!S_ISREG(inode->i_mode) || inode->i_nlink != 1)
135 need_cp = true;
Jaegeuk Kime7d55452015-04-29 17:02:18 -0700136 else if (file_enc_name(inode) && need_dentry_mark(sbi, inode->i_ino))
137 need_cp = true;
Chao Yu9d1589e2014-08-20 18:37:35 +0800138 else if (file_wrong_pino(inode))
139 need_cp = true;
140 else if (!space_for_roll_forward(sbi))
141 need_cp = true;
142 else if (!is_checkpointed_node(sbi, F2FS_I(inode)->i_pino))
143 need_cp = true;
144 else if (F2FS_I(inode)->xattr_ver == cur_cp_version(F2FS_CKPT(sbi)))
145 need_cp = true;
Jaegeuk Kimd5053a342014-10-30 22:47:03 -0700146 else if (test_opt(sbi, FASTBOOT))
147 need_cp = true;
Jaegeuk Kima344b9f2014-11-05 20:05:53 -0800148 else if (sbi->active_logs == 2)
149 need_cp = true;
Chao Yu9d1589e2014-08-20 18:37:35 +0800150
151 return need_cp;
152}
153
Changman Lee9c7bb702014-12-08 15:29:40 +0900154static bool need_inode_page_update(struct f2fs_sb_info *sbi, nid_t ino)
155{
156 struct page *i = find_get_page(NODE_MAPPING(sbi), ino);
157 bool ret = false;
158 /* But we need to avoid that there are some inode updates */
159 if ((i && PageDirty(i)) || need_inode_block_update(sbi, ino))
160 ret = true;
161 f2fs_put_page(i, 0);
162 return ret;
163}
164
Changman Lee51455b12014-12-08 15:29:41 +0900165static void try_to_fix_pino(struct inode *inode)
166{
167 struct f2fs_inode_info *fi = F2FS_I(inode);
168 nid_t pino;
169
170 down_write(&fi->i_sem);
171 fi->xattr_ver = 0;
172 if (file_wrong_pino(inode) && inode->i_nlink == 1 &&
173 get_parent_ino(inode, &pino)) {
174 fi->i_pino = pino;
175 file_got_pino(inode);
176 up_write(&fi->i_sem);
177
178 mark_inode_dirty_sync(inode);
179 f2fs_write_inode(inode, NULL);
180 } else {
181 up_write(&fi->i_sem);
182 }
183}
184
Jaegeuk Kim608514d2016-04-15 09:43:17 -0700185static int f2fs_do_sync_file(struct file *file, loff_t start, loff_t end,
186 int datasync, bool atomic)
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900187{
188 struct inode *inode = file->f_mapping->host;
Jaegeuk Kimd928bfb2014-03-20 19:10:08 +0900189 struct f2fs_inode_info *fi = F2FS_I(inode);
Jaegeuk Kim40813632014-09-02 15:31:18 -0700190 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
Jaegeuk Kim2403c152014-09-10 14:58:18 -0700191 nid_t ino = inode->i_ino;
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900192 int ret = 0;
193 bool need_cp = false;
194 struct writeback_control wbc = {
Jaegeuk Kimc81bf1c2014-03-03 11:28:40 +0900195 .sync_mode = WB_SYNC_ALL,
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900196 .nr_to_write = LONG_MAX,
197 .for_reclaim = 0,
198 };
199
Jaegeuk Kim6bacf522013-12-06 15:00:58 +0900200 if (unlikely(f2fs_readonly(inode->i_sb)))
Namjae Jeon1fa95b02012-12-01 10:56:01 +0900201 return 0;
202
Namjae Jeona2a4a7e2013-04-20 01:28:40 +0900203 trace_f2fs_sync_file_enter(inode);
Jaegeuk Kimea1aa122014-07-24 19:11:43 -0700204
205 /* if fdatasync is triggered, let's do in-place-update */
Jaegeuk Kimc46a1552015-12-31 13:49:17 -0800206 if (datasync || get_dirty_pages(inode) <= SM_I(sbi)->min_fsync_blocks)
Jaegeuk Kimea1aa122014-07-24 19:11:43 -0700207 set_inode_flag(fi, FI_NEED_IPU);
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900208 ret = filemap_write_and_wait_range(inode->i_mapping, start, end);
Jaegeuk Kimc1ce1b02014-09-10 16:53:02 -0700209 clear_inode_flag(fi, FI_NEED_IPU);
210
Namjae Jeona2a4a7e2013-04-20 01:28:40 +0900211 if (ret) {
212 trace_f2fs_sync_file_exit(inode, need_cp, datasync, ret);
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900213 return ret;
Namjae Jeona2a4a7e2013-04-20 01:28:40 +0900214 }
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900215
Changman Lee9c7bb702014-12-08 15:29:40 +0900216 /* if the inode is dirty, let's recover all the time */
Jaegeuk Kim2286c022015-08-15 21:51:05 -0700217 if (!datasync) {
218 f2fs_write_inode(inode, NULL);
Changman Lee9c7bb702014-12-08 15:29:40 +0900219 goto go_write;
220 }
221
Jaegeuk Kim6d99ba412014-07-24 19:08:02 -0700222 /*
223 * if there is no written data, don't waste time to write recovery info.
224 */
225 if (!is_inode_flag_set(fi, FI_APPEND_WRITE) &&
Jaegeuk Kim2403c152014-09-10 14:58:18 -0700226 !exist_written_data(sbi, ino, APPEND_INO)) {
Jaegeuk Kim19c9c462014-09-10 15:04:03 -0700227
Changman Lee9c7bb702014-12-08 15:29:40 +0900228 /* it may call write_inode just prior to fsync */
229 if (need_inode_page_update(sbi, ino))
Jaegeuk Kim19c9c462014-09-10 15:04:03 -0700230 goto go_write;
Jaegeuk Kim19c9c462014-09-10 15:04:03 -0700231
Jaegeuk Kim6d99ba412014-07-24 19:08:02 -0700232 if (is_inode_flag_set(fi, FI_UPDATE_WRITE) ||
Jaegeuk Kim2403c152014-09-10 14:58:18 -0700233 exist_written_data(sbi, ino, UPDATE_INO))
Jaegeuk Kim6d99ba412014-07-24 19:08:02 -0700234 goto flush_out;
235 goto out;
236 }
Jaegeuk Kim19c9c462014-09-10 15:04:03 -0700237go_write:
Jaegeuk Kime5d23852013-07-03 10:55:52 +0900238 /*
239 * Both of fdatasync() and fsync() are able to be recovered from
240 * sudden-power-off.
241 */
Chao Yu9d1589e2014-08-20 18:37:35 +0800242 down_read(&fi->i_sem);
243 need_cp = need_do_checkpoint(inode);
Jaegeuk Kimd928bfb2014-03-20 19:10:08 +0900244 up_read(&fi->i_sem);
245
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900246 if (need_cp) {
247 /* all the dirty node pages should be flushed for POR */
248 ret = f2fs_sync_fs(inode->i_sb, 1);
Jaegeuk Kimd928bfb2014-03-20 19:10:08 +0900249
Changman Lee51455b12014-12-08 15:29:41 +0900250 /*
251 * We've secured consistency through sync_fs. Following pino
252 * will be used only for fsynced inodes after checkpoint.
253 */
254 try_to_fix_pino(inode);
Jaegeuk Kimcff28522015-03-02 10:48:56 -0800255 clear_inode_flag(fi, FI_APPEND_WRITE);
256 clear_inode_flag(fi, FI_UPDATE_WRITE);
Changman Lee51455b12014-12-08 15:29:41 +0900257 goto out;
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900258 }
Changman Lee51455b12014-12-08 15:29:41 +0900259sync_nodes:
Jaegeuk Kim608514d2016-04-15 09:43:17 -0700260 ret = fsync_node_pages(sbi, ino, &wbc, atomic);
Jaegeuk Kimc267ec12016-04-15 09:25:04 -0700261 if (ret)
262 goto out;
Changman Lee51455b12014-12-08 15:29:41 +0900263
Jaegeuk Kim871f5992015-01-09 16:27:17 -0800264 /* if cp_error was enabled, we should avoid infinite loop */
Chao Yu6d5a1492015-12-24 18:04:56 +0800265 if (unlikely(f2fs_cp_error(sbi))) {
266 ret = -EIO;
Jaegeuk Kim871f5992015-01-09 16:27:17 -0800267 goto out;
Chao Yu6d5a1492015-12-24 18:04:56 +0800268 }
Jaegeuk Kim871f5992015-01-09 16:27:17 -0800269
Changman Lee51455b12014-12-08 15:29:41 +0900270 if (need_inode_block_update(sbi, ino)) {
271 mark_inode_dirty_sync(inode);
272 f2fs_write_inode(inode, NULL);
273 goto sync_nodes;
274 }
275
276 ret = wait_on_node_pages_writeback(sbi, ino);
277 if (ret)
278 goto out;
279
280 /* once recovery info is written, don't need to tack this */
Chao Yua49324f2015-12-15 13:29:47 +0800281 remove_ino_entry(sbi, ino, APPEND_INO);
Changman Lee51455b12014-12-08 15:29:41 +0900282 clear_inode_flag(fi, FI_APPEND_WRITE);
283flush_out:
Chao Yua49324f2015-12-15 13:29:47 +0800284 remove_ino_entry(sbi, ino, UPDATE_INO);
Changman Lee51455b12014-12-08 15:29:41 +0900285 clear_inode_flag(fi, FI_UPDATE_WRITE);
286 ret = f2fs_issue_flush(sbi);
Jaegeuk Kimd0239e12016-01-08 16:57:48 -0800287 f2fs_update_time(sbi, REQ_TIME);
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900288out:
Namjae Jeona2a4a7e2013-04-20 01:28:40 +0900289 trace_f2fs_sync_file_exit(inode, need_cp, datasync, ret);
Jaegeuk Kim05ca3632015-04-23 14:38:15 -0700290 f2fs_trace_ios(NULL, 1);
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900291 return ret;
292}
293
Jaegeuk Kim608514d2016-04-15 09:43:17 -0700294int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
295{
296 return f2fs_do_sync_file(file, start, end, datasync, false);
297}
298
Jaegeuk Kim7f7670f2014-04-28 18:12:36 +0900299static pgoff_t __get_first_dirty_index(struct address_space *mapping,
300 pgoff_t pgofs, int whence)
301{
302 struct pagevec pvec;
303 int nr_pages;
304
305 if (whence != SEEK_DATA)
306 return 0;
307
308 /* find first dirty page index */
309 pagevec_init(&pvec, 0);
Jaegeuk Kim65b85cc2014-07-30 17:25:54 -0700310 nr_pages = pagevec_lookup_tag(&pvec, mapping, &pgofs,
311 PAGECACHE_TAG_DIRTY, 1);
Chao Yu80dd9c02016-02-24 17:20:44 +0800312 pgofs = nr_pages ? pvec.pages[0]->index : ULONG_MAX;
Jaegeuk Kim7f7670f2014-04-28 18:12:36 +0900313 pagevec_release(&pvec);
314 return pgofs;
315}
316
317static bool __found_offset(block_t blkaddr, pgoff_t dirty, pgoff_t pgofs,
318 int whence)
319{
320 switch (whence) {
321 case SEEK_DATA:
322 if ((blkaddr == NEW_ADDR && dirty == pgofs) ||
323 (blkaddr != NEW_ADDR && blkaddr != NULL_ADDR))
324 return true;
325 break;
326 case SEEK_HOLE:
327 if (blkaddr == NULL_ADDR)
328 return true;
329 break;
330 }
331 return false;
332}
333
Chao Yu267378d2014-04-23 14:10:24 +0800334static loff_t f2fs_seek_block(struct file *file, loff_t offset, int whence)
335{
336 struct inode *inode = file->f_mapping->host;
337 loff_t maxbytes = inode->i_sb->s_maxbytes;
338 struct dnode_of_data dn;
Jaegeuk Kim7f7670f2014-04-28 18:12:36 +0900339 pgoff_t pgofs, end_offset, dirty;
340 loff_t data_ofs = offset;
341 loff_t isize;
Chao Yu267378d2014-04-23 14:10:24 +0800342 int err = 0;
343
Al Viro59551022016-01-22 15:40:57 -0500344 inode_lock(inode);
Chao Yu267378d2014-04-23 14:10:24 +0800345
346 isize = i_size_read(inode);
347 if (offset >= isize)
348 goto fail;
349
350 /* handle inline data case */
Chao Yu622f28a2014-09-24 18:19:10 +0800351 if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode)) {
Chao Yu267378d2014-04-23 14:10:24 +0800352 if (whence == SEEK_HOLE)
353 data_ofs = isize;
354 goto found;
355 }
356
Kirill A. Shutemov09cbfea2016-04-01 15:29:47 +0300357 pgofs = (pgoff_t)(offset >> PAGE_SHIFT);
Chao Yu267378d2014-04-23 14:10:24 +0800358
Jaegeuk Kim7f7670f2014-04-28 18:12:36 +0900359 dirty = __get_first_dirty_index(inode->i_mapping, pgofs, whence);
360
Kirill A. Shutemov09cbfea2016-04-01 15:29:47 +0300361 for (; data_ofs < isize; data_ofs = (loff_t)pgofs << PAGE_SHIFT) {
Chao Yu267378d2014-04-23 14:10:24 +0800362 set_new_dnode(&dn, inode, NULL, NULL, 0);
363 err = get_dnode_of_data(&dn, pgofs, LOOKUP_NODE_RA);
364 if (err && err != -ENOENT) {
365 goto fail;
366 } else if (err == -ENOENT) {
arter97e1c42042014-08-06 23:22:50 +0900367 /* direct node does not exists */
Chao Yu267378d2014-04-23 14:10:24 +0800368 if (whence == SEEK_DATA) {
Chao Yu3cf45742016-01-26 15:40:44 +0800369 pgofs = get_next_page_offset(&dn, pgofs);
Chao Yu267378d2014-04-23 14:10:24 +0800370 continue;
371 } else {
372 goto found;
373 }
374 }
375
Chao Yu81ca7352016-01-26 15:39:35 +0800376 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
Chao Yu267378d2014-04-23 14:10:24 +0800377
378 /* find data/hole in dnode block */
379 for (; dn.ofs_in_node < end_offset;
380 dn.ofs_in_node++, pgofs++,
Kirill A. Shutemov09cbfea2016-04-01 15:29:47 +0300381 data_ofs = (loff_t)pgofs << PAGE_SHIFT) {
Chao Yu267378d2014-04-23 14:10:24 +0800382 block_t blkaddr;
383 blkaddr = datablock_addr(dn.node_page, dn.ofs_in_node);
384
Jaegeuk Kim7f7670f2014-04-28 18:12:36 +0900385 if (__found_offset(blkaddr, dirty, pgofs, whence)) {
Chao Yu267378d2014-04-23 14:10:24 +0800386 f2fs_put_dnode(&dn);
387 goto found;
388 }
389 }
390 f2fs_put_dnode(&dn);
391 }
392
393 if (whence == SEEK_DATA)
394 goto fail;
Chao Yu267378d2014-04-23 14:10:24 +0800395found:
Jaegeuk Kimfe369bc2014-04-28 17:02:48 +0900396 if (whence == SEEK_HOLE && data_ofs > isize)
397 data_ofs = isize;
Al Viro59551022016-01-22 15:40:57 -0500398 inode_unlock(inode);
Chao Yu267378d2014-04-23 14:10:24 +0800399 return vfs_setpos(file, data_ofs, maxbytes);
400fail:
Al Viro59551022016-01-22 15:40:57 -0500401 inode_unlock(inode);
Chao Yu267378d2014-04-23 14:10:24 +0800402 return -ENXIO;
403}
404
405static loff_t f2fs_llseek(struct file *file, loff_t offset, int whence)
406{
407 struct inode *inode = file->f_mapping->host;
408 loff_t maxbytes = inode->i_sb->s_maxbytes;
409
410 switch (whence) {
411 case SEEK_SET:
412 case SEEK_CUR:
413 case SEEK_END:
414 return generic_file_llseek_size(file, offset, whence,
415 maxbytes, i_size_read(inode));
416 case SEEK_DATA:
417 case SEEK_HOLE:
Jaegeuk Kim0b4c5afde2014-09-08 10:59:43 -0700418 if (offset < 0)
419 return -ENXIO;
Chao Yu267378d2014-04-23 14:10:24 +0800420 return f2fs_seek_block(file, offset, whence);
421 }
422
423 return -EINVAL;
424}
425
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900426static int f2fs_file_mmap(struct file *file, struct vm_area_struct *vma)
427{
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -0700428 struct inode *inode = file_inode(file);
Jaegeuk Kimb9d777b2015-12-22 11:09:35 -0800429 int err;
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -0700430
Jaegeuk Kimfcc85a42015-04-21 20:39:58 -0700431 if (f2fs_encrypted_inode(inode)) {
Jaegeuk Kim0b81d072015-05-15 16:26:10 -0700432 err = fscrypt_get_encryption_info(inode);
Jaegeuk Kimfcc85a42015-04-21 20:39:58 -0700433 if (err)
434 return 0;
Chao Yuae108662016-02-14 18:58:35 +0800435 if (!f2fs_encrypted_inode(inode))
436 return -ENOKEY;
Jaegeuk Kimfcc85a42015-04-21 20:39:58 -0700437 }
438
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -0700439 /* we don't need to use inline_data strictly */
Jaegeuk Kimb9d777b2015-12-22 11:09:35 -0800440 err = f2fs_convert_inline_inode(inode);
441 if (err)
442 return err;
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -0700443
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900444 file_accessed(file);
445 vma->vm_ops = &f2fs_file_vm_ops;
446 return 0;
447}
448
Jaegeuk Kimfcc85a42015-04-21 20:39:58 -0700449static int f2fs_file_open(struct inode *inode, struct file *filp)
450{
451 int ret = generic_file_open(inode, filp);
Jaegeuk Kim33b13952016-04-11 15:15:38 -0700452 struct dentry *dir;
Jaegeuk Kimfcc85a42015-04-21 20:39:58 -0700453
454 if (!ret && f2fs_encrypted_inode(inode)) {
Jaegeuk Kim0b81d072015-05-15 16:26:10 -0700455 ret = fscrypt_get_encryption_info(inode);
Jaegeuk Kimfcc85a42015-04-21 20:39:58 -0700456 if (ret)
Chao Yuae108662016-02-14 18:58:35 +0800457 return -EACCES;
Jaegeuk Kim0b81d072015-05-15 16:26:10 -0700458 if (!fscrypt_has_encryption_key(inode))
Chao Yuae108662016-02-14 18:58:35 +0800459 return -ENOKEY;
Jaegeuk Kimfcc85a42015-04-21 20:39:58 -0700460 }
Jaegeuk Kim33b13952016-04-11 15:15:38 -0700461 dir = dget_parent(file_dentry(filp));
462 if (f2fs_encrypted_inode(d_inode(dir)) &&
463 !fscrypt_has_permitted_context(d_inode(dir), inode)) {
464 dput(dir);
Jaegeuk Kim8074bb52016-02-23 09:21:37 -0800465 return -EPERM;
Jaegeuk Kim33b13952016-04-11 15:15:38 -0700466 }
467 dput(dir);
Jaegeuk Kimfcc85a42015-04-21 20:39:58 -0700468 return ret;
469}
470
Jaegeuk Kimb292dcab2013-05-22 08:02:02 +0900471int truncate_data_blocks_range(struct dnode_of_data *dn, int count)
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900472{
Jaegeuk Kim40813632014-09-02 15:31:18 -0700473 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900474 struct f2fs_node *raw_node;
Chao Yu19b2c302015-08-26 20:34:48 +0800475 int nr_free = 0, ofs = dn->ofs_in_node, len = count;
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900476 __le32 *addr;
477
Gu Zheng45590712013-07-15 17:57:38 +0800478 raw_node = F2FS_NODE(dn->node_page);
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900479 addr = blkaddr_in_node(raw_node) + ofs;
480
Chris Fries6c311ec2014-01-17 14:44:39 -0600481 for (; count > 0; count--, addr++, dn->ofs_in_node++) {
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900482 block_t blkaddr = le32_to_cpu(*addr);
483 if (blkaddr == NULL_ADDR)
484 continue;
485
Jaegeuk Kime1509cf2014-12-30 22:57:55 -0800486 dn->data_blkaddr = NULL_ADDR;
Chao Yu216a6202015-03-19 19:23:32 +0800487 set_data_blkaddr(dn);
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900488 invalidate_blocks(sbi, blkaddr);
Jaegeuk Kim3c6c2be2015-03-17 17:16:35 -0700489 if (dn->ofs_in_node == 0 && IS_INODE(dn->node_page))
490 clear_inode_flag(F2FS_I(dn->inode),
491 FI_FIRST_BLOCK_WRITTEN);
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900492 nr_free++;
493 }
Chao Yu19b2c302015-08-26 20:34:48 +0800494
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900495 if (nr_free) {
Chao Yu19b2c302015-08-26 20:34:48 +0800496 pgoff_t fofs;
497 /*
498 * once we invalidate valid blkaddr in range [ofs, ofs + count],
499 * we will invalidate all blkaddr in the whole range.
500 */
501 fofs = start_bidx_of_node(ofs_of_node(dn->node_page),
Chao Yu81ca7352016-01-26 15:39:35 +0800502 dn->inode) + ofs;
Chao Yu19b2c302015-08-26 20:34:48 +0800503 f2fs_update_extent_cache_range(dn, fofs, 0, len);
Namjae Jeond7cc9502013-06-08 21:25:40 +0900504 dec_valid_block_count(sbi, dn->inode, nr_free);
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900505 sync_inode_page(dn);
506 }
507 dn->ofs_in_node = ofs;
Namjae Jeon51dd6242013-04-20 01:28:52 +0900508
Jaegeuk Kimd0239e12016-01-08 16:57:48 -0800509 f2fs_update_time(sbi, REQ_TIME);
Namjae Jeon51dd6242013-04-20 01:28:52 +0900510 trace_f2fs_truncate_data_blocks_range(dn->inode, dn->nid,
511 dn->ofs_in_node, nr_free);
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900512 return nr_free;
513}
514
515void truncate_data_blocks(struct dnode_of_data *dn)
516{
517 truncate_data_blocks_range(dn, ADDRS_PER_BLOCK);
518}
519
Chao Yu0bfcfcc2015-03-10 13:16:25 +0800520static int truncate_partial_data_page(struct inode *inode, u64 from,
Jaegeuk Kim43f3eae2015-04-30 17:00:33 -0700521 bool cache_only)
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900522{
Kirill A. Shutemov09cbfea2016-04-01 15:29:47 +0300523 unsigned offset = from & (PAGE_SIZE - 1);
524 pgoff_t index = from >> PAGE_SHIFT;
Jaegeuk Kim43f3eae2015-04-30 17:00:33 -0700525 struct address_space *mapping = inode->i_mapping;
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900526 struct page *page;
527
Jaegeuk Kim43f3eae2015-04-30 17:00:33 -0700528 if (!offset && !cache_only)
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -0700529 return 0;
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900530
Jaegeuk Kim43f3eae2015-04-30 17:00:33 -0700531 if (cache_only) {
Jaegeuk Kima56c7c62015-10-09 15:11:38 -0700532 page = f2fs_grab_cache_page(mapping, index, false);
Jaegeuk Kim43f3eae2015-04-30 17:00:33 -0700533 if (page && PageUptodate(page))
534 goto truncate_out;
535 f2fs_put_page(page, 1);
536 return 0;
537 }
538
Jaegeuk Kima56c7c62015-10-09 15:11:38 -0700539 page = get_lock_data_page(inode, index, true);
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900540 if (IS_ERR(page))
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -0700541 return 0;
Jaegeuk Kim43f3eae2015-04-30 17:00:33 -0700542truncate_out:
Jaegeuk Kimfec1d652016-01-20 23:43:51 +0800543 f2fs_wait_on_page_writeback(page, DATA, true);
Kirill A. Shutemov09cbfea2016-04-01 15:29:47 +0300544 zero_user(page, offset, PAGE_SIZE - offset);
Jaegeuk Kim0b81d072015-05-15 16:26:10 -0700545 if (!cache_only || !f2fs_encrypted_inode(inode) ||
546 !S_ISREG(inode->i_mode))
Chao Yu0bfcfcc2015-03-10 13:16:25 +0800547 set_page_dirty(page);
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900548 f2fs_put_page(page, 1);
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -0700549 return 0;
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900550}
551
Jaegeuk Kim764aa3e2014-08-14 16:32:54 -0700552int truncate_blocks(struct inode *inode, u64 from, bool lock)
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900553{
Jaegeuk Kim40813632014-09-02 15:31:18 -0700554 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900555 unsigned int blocksize = inode->i_sb->s_blocksize;
556 struct dnode_of_data dn;
557 pgoff_t free_from;
Huajun Li9ffe0fb2013-11-10 23:13:20 +0800558 int count = 0, err = 0;
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -0700559 struct page *ipage;
Chao Yu0bfcfcc2015-03-10 13:16:25 +0800560 bool truncate_page = false;
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900561
Namjae Jeon51dd6242013-04-20 01:28:52 +0900562 trace_f2fs_truncate_blocks_enter(inode, from);
563
Jaegeuk Kimf7ef9b82015-02-09 12:02:44 -0800564 free_from = (pgoff_t)F2FS_BYTES_TO_BLK(from + blocksize - 1);
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900565
Chao Yu09210c92016-05-05 19:13:03 +0800566 if (free_from >= sbi->max_file_blocks)
567 goto free_partial;
568
Jaegeuk Kim764aa3e2014-08-14 16:32:54 -0700569 if (lock)
570 f2fs_lock_op(sbi);
Huajun Li9ffe0fb2013-11-10 23:13:20 +0800571
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -0700572 ipage = get_node_page(sbi, inode->i_ino);
573 if (IS_ERR(ipage)) {
574 err = PTR_ERR(ipage);
575 goto out;
576 }
577
578 if (f2fs_has_inline_data(inode)) {
Chao Yu0bfcfcc2015-03-10 13:16:25 +0800579 if (truncate_inline_inode(ipage, from))
580 set_page_dirty(ipage);
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -0700581 f2fs_put_page(ipage, 1);
Chao Yu0bfcfcc2015-03-10 13:16:25 +0800582 truncate_page = true;
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -0700583 goto out;
584 }
585
586 set_new_dnode(&dn, inode, ipage, NULL, 0);
Jaegeuk Kim79344ef2016-05-06 16:19:43 -0700587 err = get_dnode_of_data(&dn, free_from, LOOKUP_NODE_RA);
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900588 if (err) {
589 if (err == -ENOENT)
590 goto free_next;
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -0700591 goto out;
Jaegeuk Kim1ce86bf2014-10-15 10:24:34 -0700592 }
593
Chao Yu81ca7352016-01-26 15:39:35 +0800594 count = ADDRS_PER_PAGE(dn.node_page, inode);
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900595
596 count -= dn.ofs_in_node;
Jaegeuk Kim9850cf42014-09-02 15:52:58 -0700597 f2fs_bug_on(sbi, count < 0);
Jaegeuk Kim39936832012-11-22 16:21:29 +0900598
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900599 if (dn.ofs_in_node || IS_INODE(dn.node_page)) {
600 truncate_data_blocks_range(&dn, count);
601 free_from += count;
602 }
603
604 f2fs_put_dnode(&dn);
605free_next:
606 err = truncate_inode_blocks(inode, free_from);
Jaegeuk Kim764d2c82014-11-11 11:01:01 -0800607out:
608 if (lock)
609 f2fs_unlock_op(sbi);
Chao Yu09210c92016-05-05 19:13:03 +0800610free_partial:
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -0700611 /* lastly zero out the first data page */
612 if (!err)
Chao Yu0bfcfcc2015-03-10 13:16:25 +0800613 err = truncate_partial_data_page(inode, from, truncate_page);
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900614
Namjae Jeon51dd6242013-04-20 01:28:52 +0900615 trace_f2fs_truncate_blocks_exit(inode, err);
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900616 return err;
617}
618
Chao Yub0154892015-08-24 17:39:42 +0800619int f2fs_truncate(struct inode *inode, bool lock)
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900620{
Chao Yub0154892015-08-24 17:39:42 +0800621 int err;
622
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900623 if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
624 S_ISLNK(inode->i_mode)))
Chao Yub0154892015-08-24 17:39:42 +0800625 return 0;
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900626
Namjae Jeon51dd6242013-04-20 01:28:52 +0900627 trace_f2fs_truncate(inode);
628
Jaegeuk Kim92dffd02014-11-11 14:10:01 -0800629 /* we should check inline_data size */
Jaegeuk Kimb9d777b2015-12-22 11:09:35 -0800630 if (!f2fs_may_inline_data(inode)) {
Chao Yub0154892015-08-24 17:39:42 +0800631 err = f2fs_convert_inline_inode(inode);
632 if (err)
633 return err;
Jaegeuk Kim92dffd02014-11-11 14:10:01 -0800634 }
635
Chao Yub0154892015-08-24 17:39:42 +0800636 err = truncate_blocks(inode, i_size_read(inode), lock);
637 if (err)
638 return err;
639
640 inode->i_mtime = inode->i_ctime = CURRENT_TIME;
641 mark_inode_dirty(inode);
642 return 0;
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900643}
644
Jaegeuk Kim2d4d9fb52013-06-07 16:33:07 +0900645int f2fs_getattr(struct vfsmount *mnt,
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900646 struct dentry *dentry, struct kstat *stat)
647{
David Howells2b0143b2015-03-17 22:25:59 +0000648 struct inode *inode = d_inode(dentry);
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900649 generic_fillattr(inode, stat);
650 stat->blocks <<= 3;
651 return 0;
652}
653
654#ifdef CONFIG_F2FS_FS_POSIX_ACL
655static void __setattr_copy(struct inode *inode, const struct iattr *attr)
656{
657 struct f2fs_inode_info *fi = F2FS_I(inode);
658 unsigned int ia_valid = attr->ia_valid;
659
660 if (ia_valid & ATTR_UID)
661 inode->i_uid = attr->ia_uid;
662 if (ia_valid & ATTR_GID)
663 inode->i_gid = attr->ia_gid;
664 if (ia_valid & ATTR_ATIME)
665 inode->i_atime = timespec_trunc(attr->ia_atime,
666 inode->i_sb->s_time_gran);
667 if (ia_valid & ATTR_MTIME)
668 inode->i_mtime = timespec_trunc(attr->ia_mtime,
669 inode->i_sb->s_time_gran);
670 if (ia_valid & ATTR_CTIME)
671 inode->i_ctime = timespec_trunc(attr->ia_ctime,
672 inode->i_sb->s_time_gran);
673 if (ia_valid & ATTR_MODE) {
674 umode_t mode = attr->ia_mode;
675
676 if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID))
677 mode &= ~S_ISGID;
678 set_acl_inode(fi, mode);
679 }
680}
681#else
682#define __setattr_copy setattr_copy
683#endif
684
685int f2fs_setattr(struct dentry *dentry, struct iattr *attr)
686{
David Howells2b0143b2015-03-17 22:25:59 +0000687 struct inode *inode = d_inode(dentry);
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900688 struct f2fs_inode_info *fi = F2FS_I(inode);
689 int err;
690
691 err = inode_change_ok(inode, attr);
692 if (err)
693 return err;
694
Chao Yu09db6a22014-09-15 18:02:09 +0800695 if (attr->ia_valid & ATTR_SIZE) {
Jaegeuk Kimfcc85a42015-04-21 20:39:58 -0700696 if (f2fs_encrypted_inode(inode) &&
Jaegeuk Kim0b81d072015-05-15 16:26:10 -0700697 fscrypt_get_encryption_info(inode))
Jaegeuk Kimfcc85a42015-04-21 20:39:58 -0700698 return -EACCES;
699
Chao Yu3c454142015-06-05 18:34:02 +0800700 if (attr->ia_size <= i_size_read(inode)) {
Chao Yu09db6a22014-09-15 18:02:09 +0800701 truncate_setsize(inode, attr->ia_size);
Chao Yub0154892015-08-24 17:39:42 +0800702 err = f2fs_truncate(inode, true);
703 if (err)
704 return err;
Jaegeuk Kim2c4db1a2016-01-07 14:15:04 -0800705 f2fs_balance_fs(F2FS_I_SB(inode), true);
Chao Yu09db6a22014-09-15 18:02:09 +0800706 } else {
707 /*
Chao Yu3c454142015-06-05 18:34:02 +0800708 * do not trim all blocks after i_size if target size is
709 * larger than i_size.
Chao Yu09db6a22014-09-15 18:02:09 +0800710 */
Chao Yu3c454142015-06-05 18:34:02 +0800711 truncate_setsize(inode, attr->ia_size);
Chao Yu0cab80e2015-12-01 11:36:16 +0800712
713 /* should convert inline inode here */
Jaegeuk Kimb9d777b2015-12-22 11:09:35 -0800714 if (!f2fs_may_inline_data(inode)) {
Chao Yu0cab80e2015-12-01 11:36:16 +0800715 err = f2fs_convert_inline_inode(inode);
716 if (err)
717 return err;
718 }
Chao Yu345a6b22015-09-28 17:46:01 +0800719 inode->i_mtime = inode->i_ctime = CURRENT_TIME;
Chao Yu09db6a22014-09-15 18:02:09 +0800720 }
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900721 }
722
723 __setattr_copy(inode, attr);
724
725 if (attr->ia_valid & ATTR_MODE) {
Christoph Hellwiga6dda0e2013-12-20 05:16:45 -0800726 err = posix_acl_chmod(inode, get_inode_mode(inode));
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900727 if (err || is_inode_flag_set(fi, FI_ACL_MODE)) {
728 inode->i_mode = fi->i_acl_mode;
729 clear_inode_flag(fi, FI_ACL_MODE);
730 }
731 }
732
733 mark_inode_dirty(inode);
734 return err;
735}
736
737const struct inode_operations f2fs_file_inode_operations = {
738 .getattr = f2fs_getattr,
739 .setattr = f2fs_setattr,
740 .get_acl = f2fs_get_acl,
Christoph Hellwiga6dda0e2013-12-20 05:16:45 -0800741 .set_acl = f2fs_set_acl,
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900742#ifdef CONFIG_F2FS_FS_XATTR
743 .setxattr = generic_setxattr,
744 .getxattr = generic_getxattr,
745 .listxattr = f2fs_listxattr,
746 .removexattr = generic_removexattr,
747#endif
Jaegeuk Kim9ab70132014-06-08 04:30:14 +0900748 .fiemap = f2fs_fiemap,
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900749};
750
Chao Yu63943282015-08-07 18:36:06 +0800751static int fill_zero(struct inode *inode, pgoff_t index,
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900752 loff_t start, loff_t len)
753{
Jaegeuk Kim40813632014-09-02 15:31:18 -0700754 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900755 struct page *page;
756
757 if (!len)
Chao Yu63943282015-08-07 18:36:06 +0800758 return 0;
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900759
Jaegeuk Kim2c4db1a2016-01-07 14:15:04 -0800760 f2fs_balance_fs(sbi, true);
Jaegeuk Kimbd43df02013-01-25 18:33:41 +0900761
Gu Zhenge4795562013-09-27 18:08:30 +0800762 f2fs_lock_op(sbi);
Jaegeuk Kim64aa7ed2013-05-20 09:55:50 +0900763 page = get_new_data_page(inode, NULL, index, false);
Gu Zhenge4795562013-09-27 18:08:30 +0800764 f2fs_unlock_op(sbi);
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900765
Chao Yu63943282015-08-07 18:36:06 +0800766 if (IS_ERR(page))
767 return PTR_ERR(page);
768
Jaegeuk Kimfec1d652016-01-20 23:43:51 +0800769 f2fs_wait_on_page_writeback(page, DATA, true);
Chao Yu63943282015-08-07 18:36:06 +0800770 zero_user(page, start, len);
771 set_page_dirty(page);
772 f2fs_put_page(page, 1);
773 return 0;
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900774}
775
776int truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end)
777{
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900778 int err;
779
Chao Yuea587112015-09-17 20:22:44 +0800780 while (pg_start < pg_end) {
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900781 struct dnode_of_data dn;
Chao Yuea587112015-09-17 20:22:44 +0800782 pgoff_t end_offset, count;
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900783
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900784 set_new_dnode(&dn, inode, NULL, NULL, 0);
Chao Yuea587112015-09-17 20:22:44 +0800785 err = get_dnode_of_data(&dn, pg_start, LOOKUP_NODE);
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900786 if (err) {
Chao Yuea587112015-09-17 20:22:44 +0800787 if (err == -ENOENT) {
788 pg_start++;
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900789 continue;
Chao Yuea587112015-09-17 20:22:44 +0800790 }
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900791 return err;
792 }
793
Chao Yu81ca7352016-01-26 15:39:35 +0800794 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
Chao Yuea587112015-09-17 20:22:44 +0800795 count = min(end_offset - dn.ofs_in_node, pg_end - pg_start);
796
797 f2fs_bug_on(F2FS_I_SB(inode), count == 0 || count > end_offset);
798
799 truncate_data_blocks_range(&dn, count);
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900800 f2fs_put_dnode(&dn);
Chao Yuea587112015-09-17 20:22:44 +0800801
802 pg_start += count;
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900803 }
804 return 0;
805}
806
Chao Yua66c7b22013-11-22 16:52:50 +0800807static int punch_hole(struct inode *inode, loff_t offset, loff_t len)
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900808{
809 pgoff_t pg_start, pg_end;
810 loff_t off_start, off_end;
Jaegeuk Kimb9d777b2015-12-22 11:09:35 -0800811 int ret;
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900812
Jaegeuk Kimb9d777b2015-12-22 11:09:35 -0800813 ret = f2fs_convert_inline_inode(inode);
814 if (ret)
815 return ret;
Huajun Li9ffe0fb2013-11-10 23:13:20 +0800816
Kirill A. Shutemov09cbfea2016-04-01 15:29:47 +0300817 pg_start = ((unsigned long long) offset) >> PAGE_SHIFT;
818 pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT;
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900819
Kirill A. Shutemov09cbfea2016-04-01 15:29:47 +0300820 off_start = offset & (PAGE_SIZE - 1);
821 off_end = (offset + len) & (PAGE_SIZE - 1);
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900822
823 if (pg_start == pg_end) {
Chao Yu63943282015-08-07 18:36:06 +0800824 ret = fill_zero(inode, pg_start, off_start,
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900825 off_end - off_start);
Chao Yu63943282015-08-07 18:36:06 +0800826 if (ret)
827 return ret;
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900828 } else {
Chao Yu63943282015-08-07 18:36:06 +0800829 if (off_start) {
830 ret = fill_zero(inode, pg_start++, off_start,
Kirill A. Shutemov09cbfea2016-04-01 15:29:47 +0300831 PAGE_SIZE - off_start);
Chao Yu63943282015-08-07 18:36:06 +0800832 if (ret)
833 return ret;
834 }
835 if (off_end) {
836 ret = fill_zero(inode, pg_end, 0, off_end);
837 if (ret)
838 return ret;
839 }
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900840
841 if (pg_start < pg_end) {
842 struct address_space *mapping = inode->i_mapping;
843 loff_t blk_start, blk_end;
Jaegeuk Kim40813632014-09-02 15:31:18 -0700844 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
Jason Hrycay1127a3d2013-04-08 20:16:44 -0500845
Jaegeuk Kim2c4db1a2016-01-07 14:15:04 -0800846 f2fs_balance_fs(sbi, true);
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900847
Kirill A. Shutemov09cbfea2016-04-01 15:29:47 +0300848 blk_start = (loff_t)pg_start << PAGE_SHIFT;
849 blk_end = (loff_t)pg_end << PAGE_SHIFT;
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900850 truncate_inode_pages_range(mapping, blk_start,
851 blk_end - 1);
Jaegeuk Kim39936832012-11-22 16:21:29 +0900852
Gu Zhenge4795562013-09-27 18:08:30 +0800853 f2fs_lock_op(sbi);
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900854 ret = truncate_hole(inode, pg_start, pg_end);
Gu Zhenge4795562013-09-27 18:08:30 +0800855 f2fs_unlock_op(sbi);
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900856 }
857 }
858
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +0900859 return ret;
860}
861
Jaegeuk Kim6e2c64a2015-10-07 12:28:41 -0700862static int __exchange_data_block(struct inode *inode, pgoff_t src,
863 pgoff_t dst, bool full)
Chao Yub4ace332015-05-06 13:09:46 +0800864{
865 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
866 struct dnode_of_data dn;
Jaegeuk Kim6e2c64a2015-10-07 12:28:41 -0700867 block_t new_addr;
868 bool do_replace = false;
869 int ret;
870
871 set_new_dnode(&dn, inode, NULL, NULL, 0);
872 ret = get_dnode_of_data(&dn, src, LOOKUP_NODE_RA);
873 if (ret && ret != -ENOENT) {
874 return ret;
875 } else if (ret == -ENOENT) {
876 new_addr = NULL_ADDR;
877 } else {
878 new_addr = dn.data_blkaddr;
879 if (!is_checkpointed_data(sbi, new_addr)) {
Jaegeuk Kim6e2c64a2015-10-07 12:28:41 -0700880 /* do not invalidate this block address */
Chao Yuf28b3432016-02-24 17:16:47 +0800881 f2fs_update_data_blkaddr(&dn, NULL_ADDR);
Jaegeuk Kim6e2c64a2015-10-07 12:28:41 -0700882 do_replace = true;
883 }
884 f2fs_put_dnode(&dn);
885 }
886
887 if (new_addr == NULL_ADDR)
888 return full ? truncate_hole(inode, dst, dst + 1) : 0;
889
890 if (do_replace) {
891 struct page *ipage = get_node_page(sbi, inode->i_ino);
892 struct node_info ni;
893
894 if (IS_ERR(ipage)) {
895 ret = PTR_ERR(ipage);
896 goto err_out;
897 }
898
899 set_new_dnode(&dn, inode, ipage, NULL, 0);
900 ret = f2fs_reserve_block(&dn, dst);
901 if (ret)
902 goto err_out;
903
904 truncate_data_blocks_range(&dn, 1);
905
906 get_node_info(sbi, dn.nid, &ni);
907 f2fs_replace_block(sbi, &dn, dn.data_blkaddr, new_addr,
Chao Yu28bc1062016-02-06 14:40:34 +0800908 ni.version, true, false);
Jaegeuk Kim6e2c64a2015-10-07 12:28:41 -0700909 f2fs_put_dnode(&dn);
910 } else {
911 struct page *psrc, *pdst;
912
Jaegeuk Kima56c7c62015-10-09 15:11:38 -0700913 psrc = get_lock_data_page(inode, src, true);
Jaegeuk Kim6e2c64a2015-10-07 12:28:41 -0700914 if (IS_ERR(psrc))
915 return PTR_ERR(psrc);
Jaegeuk Kim8ef2af452016-02-08 14:17:38 -0800916 pdst = get_new_data_page(inode, NULL, dst, true);
Jaegeuk Kim6e2c64a2015-10-07 12:28:41 -0700917 if (IS_ERR(pdst)) {
918 f2fs_put_page(psrc, 1);
919 return PTR_ERR(pdst);
920 }
921 f2fs_copy_page(psrc, pdst);
922 set_page_dirty(pdst);
923 f2fs_put_page(pdst, 1);
924 f2fs_put_page(psrc, 1);
925
926 return truncate_hole(inode, src, src + 1);
927 }
928 return 0;
929
930err_out:
931 if (!get_dnode_of_data(&dn, src, LOOKUP_NODE)) {
Chao Yuf28b3432016-02-24 17:16:47 +0800932 f2fs_update_data_blkaddr(&dn, new_addr);
Jaegeuk Kim6e2c64a2015-10-07 12:28:41 -0700933 f2fs_put_dnode(&dn);
934 }
935 return ret;
936}
937
938static int f2fs_do_collapse(struct inode *inode, pgoff_t start, pgoff_t end)
939{
940 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
Chao Yub4ace332015-05-06 13:09:46 +0800941 pgoff_t nrpages = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE;
942 int ret = 0;
943
Chao Yub4ace332015-05-06 13:09:46 +0800944 for (; end < nrpages; start++, end++) {
Jaegeuk Kim2c4db1a2016-01-07 14:15:04 -0800945 f2fs_balance_fs(sbi, true);
Chao Yuecbaa402015-07-16 18:18:11 +0800946 f2fs_lock_op(sbi);
Jaegeuk Kim6e2c64a2015-10-07 12:28:41 -0700947 ret = __exchange_data_block(inode, end, start, true);
Chao Yuecbaa402015-07-16 18:18:11 +0800948 f2fs_unlock_op(sbi);
Jaegeuk Kim6e2c64a2015-10-07 12:28:41 -0700949 if (ret)
950 break;
Chao Yub4ace332015-05-06 13:09:46 +0800951 }
Chao Yub4ace332015-05-06 13:09:46 +0800952 return ret;
953}
954
955static int f2fs_collapse_range(struct inode *inode, loff_t offset, loff_t len)
956{
957 pgoff_t pg_start, pg_end;
958 loff_t new_size;
959 int ret;
960
Chao Yub4ace332015-05-06 13:09:46 +0800961 if (offset + len >= i_size_read(inode))
962 return -EINVAL;
963
964 /* collapse range should be aligned to block size of f2fs. */
965 if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1))
966 return -EINVAL;
967
Jaegeuk Kimb9d777b2015-12-22 11:09:35 -0800968 ret = f2fs_convert_inline_inode(inode);
969 if (ret)
970 return ret;
Jaegeuk Kim97a7b2c2015-06-17 13:59:05 -0700971
Kirill A. Shutemov09cbfea2016-04-01 15:29:47 +0300972 pg_start = offset >> PAGE_SHIFT;
973 pg_end = (offset + len) >> PAGE_SHIFT;
Chao Yub4ace332015-05-06 13:09:46 +0800974
975 /* write out all dirty pages from offset */
976 ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
977 if (ret)
978 return ret;
979
980 truncate_pagecache(inode, offset);
981
982 ret = f2fs_do_collapse(inode, pg_start, pg_end);
983 if (ret)
984 return ret;
985
Jaegeuk Kim6e2c64a2015-10-07 12:28:41 -0700986 /* write out all moved pages, if possible */
987 filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
988 truncate_pagecache(inode, offset);
989
Chao Yub4ace332015-05-06 13:09:46 +0800990 new_size = i_size_read(inode) - len;
Jaegeuk Kim6e2c64a2015-10-07 12:28:41 -0700991 truncate_pagecache(inode, new_size);
Chao Yub4ace332015-05-06 13:09:46 +0800992
993 ret = truncate_blocks(inode, new_size, true);
994 if (!ret)
995 i_size_write(inode, new_size);
996
997 return ret;
998}
999
Chao Yu6e961942016-05-09 19:56:31 +08001000static int f2fs_do_zero_range(struct dnode_of_data *dn, pgoff_t start,
1001 pgoff_t end)
1002{
1003 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
1004 pgoff_t index = start;
1005 unsigned int ofs_in_node = dn->ofs_in_node;
1006 blkcnt_t count = 0;
1007 int ret;
1008
1009 for (; index < end; index++, dn->ofs_in_node++) {
1010 if (datablock_addr(dn->node_page, dn->ofs_in_node) == NULL_ADDR)
1011 count++;
1012 }
1013
1014 dn->ofs_in_node = ofs_in_node;
1015 ret = reserve_new_blocks(dn, count);
1016 if (ret)
1017 return ret;
1018
1019 dn->ofs_in_node = ofs_in_node;
1020 for (index = start; index < end; index++, dn->ofs_in_node++) {
1021 dn->data_blkaddr =
1022 datablock_addr(dn->node_page, dn->ofs_in_node);
1023 /*
1024 * reserve_new_blocks will not guarantee entire block
1025 * allocation.
1026 */
1027 if (dn->data_blkaddr == NULL_ADDR) {
1028 ret = -ENOSPC;
1029 break;
1030 }
1031 if (dn->data_blkaddr != NEW_ADDR) {
1032 invalidate_blocks(sbi, dn->data_blkaddr);
1033 dn->data_blkaddr = NEW_ADDR;
1034 set_data_blkaddr(dn);
1035 }
1036 }
1037
1038 f2fs_update_extent_cache_range(dn, start, 0, index - start);
1039
1040 return ret;
1041}
1042
Chao Yu75cd4e02015-05-06 13:11:13 +08001043static int f2fs_zero_range(struct inode *inode, loff_t offset, loff_t len,
1044 int mode)
1045{
1046 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1047 struct address_space *mapping = inode->i_mapping;
1048 pgoff_t index, pg_start, pg_end;
1049 loff_t new_size = i_size_read(inode);
1050 loff_t off_start, off_end;
1051 int ret = 0;
1052
Chao Yu75cd4e02015-05-06 13:11:13 +08001053 ret = inode_newsize_ok(inode, (len + offset));
1054 if (ret)
1055 return ret;
1056
Jaegeuk Kimb9d777b2015-12-22 11:09:35 -08001057 ret = f2fs_convert_inline_inode(inode);
1058 if (ret)
1059 return ret;
Chao Yu75cd4e02015-05-06 13:11:13 +08001060
1061 ret = filemap_write_and_wait_range(mapping, offset, offset + len - 1);
1062 if (ret)
1063 return ret;
1064
1065 truncate_pagecache_range(inode, offset, offset + len - 1);
1066
Kirill A. Shutemov09cbfea2016-04-01 15:29:47 +03001067 pg_start = ((unsigned long long) offset) >> PAGE_SHIFT;
1068 pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT;
Chao Yu75cd4e02015-05-06 13:11:13 +08001069
Kirill A. Shutemov09cbfea2016-04-01 15:29:47 +03001070 off_start = offset & (PAGE_SIZE - 1);
1071 off_end = (offset + len) & (PAGE_SIZE - 1);
Chao Yu75cd4e02015-05-06 13:11:13 +08001072
1073 if (pg_start == pg_end) {
Chao Yu63943282015-08-07 18:36:06 +08001074 ret = fill_zero(inode, pg_start, off_start,
1075 off_end - off_start);
1076 if (ret)
1077 return ret;
1078
Chao Yu75cd4e02015-05-06 13:11:13 +08001079 if (offset + len > new_size)
1080 new_size = offset + len;
1081 new_size = max_t(loff_t, new_size, offset + len);
1082 } else {
1083 if (off_start) {
Chao Yu63943282015-08-07 18:36:06 +08001084 ret = fill_zero(inode, pg_start++, off_start,
Kirill A. Shutemov09cbfea2016-04-01 15:29:47 +03001085 PAGE_SIZE - off_start);
Chao Yu63943282015-08-07 18:36:06 +08001086 if (ret)
1087 return ret;
1088
Chao Yu75cd4e02015-05-06 13:11:13 +08001089 new_size = max_t(loff_t, new_size,
Kirill A. Shutemov09cbfea2016-04-01 15:29:47 +03001090 (loff_t)pg_start << PAGE_SHIFT);
Chao Yu75cd4e02015-05-06 13:11:13 +08001091 }
1092
Chao Yu6e961942016-05-09 19:56:31 +08001093 for (index = pg_start; index < pg_end;) {
Chao Yu75cd4e02015-05-06 13:11:13 +08001094 struct dnode_of_data dn;
Chao Yu6e961942016-05-09 19:56:31 +08001095 unsigned int end_offset;
1096 pgoff_t end;
Chao Yu75cd4e02015-05-06 13:11:13 +08001097
1098 f2fs_lock_op(sbi);
1099
Chao Yu6e961942016-05-09 19:56:31 +08001100 set_new_dnode(&dn, inode, NULL, NULL, 0);
1101 ret = get_dnode_of_data(&dn, index, ALLOC_NODE);
Chao Yu75cd4e02015-05-06 13:11:13 +08001102 if (ret) {
1103 f2fs_unlock_op(sbi);
1104 goto out;
1105 }
1106
Chao Yu6e961942016-05-09 19:56:31 +08001107 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
1108 end = min(pg_end, end_offset - dn.ofs_in_node + index);
1109
1110 ret = f2fs_do_zero_range(&dn, index, end);
Chao Yu75cd4e02015-05-06 13:11:13 +08001111 f2fs_put_dnode(&dn);
1112 f2fs_unlock_op(sbi);
Chao Yu6e961942016-05-09 19:56:31 +08001113 if (ret)
1114 goto out;
Chao Yu75cd4e02015-05-06 13:11:13 +08001115
Chao Yu6e961942016-05-09 19:56:31 +08001116 index = end;
Chao Yu75cd4e02015-05-06 13:11:13 +08001117 new_size = max_t(loff_t, new_size,
Chao Yu6e961942016-05-09 19:56:31 +08001118 (loff_t)index << PAGE_SHIFT);
Chao Yu75cd4e02015-05-06 13:11:13 +08001119 }
1120
1121 if (off_end) {
Chao Yu63943282015-08-07 18:36:06 +08001122 ret = fill_zero(inode, pg_end, 0, off_end);
1123 if (ret)
1124 goto out;
1125
Chao Yu75cd4e02015-05-06 13:11:13 +08001126 new_size = max_t(loff_t, new_size, offset + len);
1127 }
1128 }
1129
1130out:
1131 if (!(mode & FALLOC_FL_KEEP_SIZE) && i_size_read(inode) < new_size) {
1132 i_size_write(inode, new_size);
1133 mark_inode_dirty(inode);
1134 update_inode_page(inode);
1135 }
1136
1137 return ret;
1138}
1139
Chao Yuf62185d2015-05-28 19:16:57 +08001140static int f2fs_insert_range(struct inode *inode, loff_t offset, loff_t len)
1141{
1142 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1143 pgoff_t pg_start, pg_end, delta, nrpages, idx;
1144 loff_t new_size;
Jaegeuk Kim6e2c64a2015-10-07 12:28:41 -07001145 int ret = 0;
Chao Yuf62185d2015-05-28 19:16:57 +08001146
Chao Yuf62185d2015-05-28 19:16:57 +08001147 new_size = i_size_read(inode) + len;
1148 if (new_size > inode->i_sb->s_maxbytes)
1149 return -EFBIG;
1150
1151 if (offset >= i_size_read(inode))
1152 return -EINVAL;
1153
1154 /* insert range should be aligned to block size of f2fs. */
1155 if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1))
1156 return -EINVAL;
1157
Jaegeuk Kimb9d777b2015-12-22 11:09:35 -08001158 ret = f2fs_convert_inline_inode(inode);
1159 if (ret)
1160 return ret;
Jaegeuk Kim97a7b2c2015-06-17 13:59:05 -07001161
Jaegeuk Kim2c4db1a2016-01-07 14:15:04 -08001162 f2fs_balance_fs(sbi, true);
Jaegeuk Kim2a340762015-12-22 13:23:35 -08001163
Chao Yuf62185d2015-05-28 19:16:57 +08001164 ret = truncate_blocks(inode, i_size_read(inode), true);
1165 if (ret)
1166 return ret;
1167
1168 /* write out all dirty pages from offset */
1169 ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1170 if (ret)
1171 return ret;
1172
1173 truncate_pagecache(inode, offset);
1174
Kirill A. Shutemov09cbfea2016-04-01 15:29:47 +03001175 pg_start = offset >> PAGE_SHIFT;
1176 pg_end = (offset + len) >> PAGE_SHIFT;
Chao Yuf62185d2015-05-28 19:16:57 +08001177 delta = pg_end - pg_start;
1178 nrpages = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE;
1179
1180 for (idx = nrpages - 1; idx >= pg_start && idx != -1; idx--) {
Chao Yuf62185d2015-05-28 19:16:57 +08001181 f2fs_lock_op(sbi);
Jaegeuk Kim6e2c64a2015-10-07 12:28:41 -07001182 ret = __exchange_data_block(inode, idx, idx + delta, false);
Chao Yuf62185d2015-05-28 19:16:57 +08001183 f2fs_unlock_op(sbi);
Jaegeuk Kim6e2c64a2015-10-07 12:28:41 -07001184 if (ret)
1185 break;
Chao Yuf62185d2015-05-28 19:16:57 +08001186 }
1187
Jaegeuk Kim6e2c64a2015-10-07 12:28:41 -07001188 /* write out all moved pages, if possible */
1189 filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1190 truncate_pagecache(inode, offset);
1191
1192 if (!ret)
1193 i_size_write(inode, new_size);
Chao Yuf62185d2015-05-28 19:16:57 +08001194 return ret;
1195}
1196
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +09001197static int expand_inode_data(struct inode *inode, loff_t offset,
1198 loff_t len, int mode)
1199{
Jaegeuk Kim40813632014-09-02 15:31:18 -07001200 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
Jaegeuk Kime12dd7b2016-05-06 15:30:38 -07001201 struct f2fs_map_blocks map = { .m_next_pgofs = NULL };
1202 pgoff_t pg_end;
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +09001203 loff_t new_size = i_size_read(inode);
Jaegeuk Kime12dd7b2016-05-06 15:30:38 -07001204 loff_t off_end;
1205 int ret;
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +09001206
1207 ret = inode_newsize_ok(inode, (len + offset));
1208 if (ret)
1209 return ret;
1210
Jaegeuk Kimb9d777b2015-12-22 11:09:35 -08001211 ret = f2fs_convert_inline_inode(inode);
1212 if (ret)
1213 return ret;
Jaegeuk Kim9e09fc82013-12-27 12:28:59 +09001214
Jaegeuk Kim2c4db1a2016-01-07 14:15:04 -08001215 f2fs_balance_fs(sbi, true);
Jaegeuk Kim2a340762015-12-22 13:23:35 -08001216
Jaegeuk Kime12dd7b2016-05-06 15:30:38 -07001217 pg_end = ((unsigned long long)offset + len) >> PAGE_SHIFT;
Kirill A. Shutemov09cbfea2016-04-01 15:29:47 +03001218 off_end = (offset + len) & (PAGE_SIZE - 1);
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +09001219
Jaegeuk Kime12dd7b2016-05-06 15:30:38 -07001220 map.m_lblk = ((unsigned long long)offset) >> PAGE_SHIFT;
1221 map.m_len = pg_end - map.m_lblk;
1222 if (off_end)
1223 map.m_len++;
Jaegeuk Kimead43272014-06-13 13:05:55 +09001224
Jaegeuk Kime12dd7b2016-05-06 15:30:38 -07001225 ret = f2fs_map_blocks(inode, &map, 1, F2FS_GET_BLOCK_PRE_AIO);
1226 if (ret) {
1227 pgoff_t last_off;
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +09001228
Jaegeuk Kime12dd7b2016-05-06 15:30:38 -07001229 if (!map.m_len)
1230 return ret;
Jaegeuk Kim98397ff2014-06-13 13:07:31 +09001231
Jaegeuk Kime12dd7b2016-05-06 15:30:38 -07001232 last_off = map.m_lblk + map.m_len - 1;
1233
1234 /* update new size to the failed position */
1235 new_size = (last_off == pg_end) ? offset + len:
1236 (loff_t)(last_off + 1) << PAGE_SHIFT;
1237 } else {
1238 new_size = ((loff_t)pg_end << PAGE_SHIFT) + off_end;
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +09001239 }
1240
Jaegeuk Kime12dd7b2016-05-06 15:30:38 -07001241 if (!(mode & FALLOC_FL_KEEP_SIZE) && i_size_read(inode) < new_size) {
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +09001242 i_size_write(inode, new_size);
1243 mark_inode_dirty(inode);
Jaegeuk Kimead43272014-06-13 13:05:55 +09001244 update_inode_page(inode);
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +09001245 }
1246
1247 return ret;
1248}
1249
1250static long f2fs_fallocate(struct file *file, int mode,
1251 loff_t offset, loff_t len)
1252{
Al Viro6131ffa2013-02-27 16:59:05 -05001253 struct inode *inode = file_inode(file);
Taehee Yoo587c0a42015-04-21 15:59:12 +09001254 long ret = 0;
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +09001255
Chao Yuc9980122015-09-11 14:39:02 +08001256 /* f2fs only support ->fallocate for regular file */
1257 if (!S_ISREG(inode->i_mode))
1258 return -EINVAL;
1259
Chao Yuf62185d2015-05-28 19:16:57 +08001260 if (f2fs_encrypted_inode(inode) &&
1261 (mode & (FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_INSERT_RANGE)))
Jaegeuk Kimfcc85a42015-04-21 20:39:58 -07001262 return -EOPNOTSUPP;
1263
Chao Yub4ace332015-05-06 13:09:46 +08001264 if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE |
Chao Yuf62185d2015-05-28 19:16:57 +08001265 FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_ZERO_RANGE |
1266 FALLOC_FL_INSERT_RANGE))
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +09001267 return -EOPNOTSUPP;
1268
Al Viro59551022016-01-22 15:40:57 -05001269 inode_lock(inode);
Chao Yu3375f692014-01-28 10:29:26 +08001270
Taehee Yoo587c0a42015-04-21 15:59:12 +09001271 if (mode & FALLOC_FL_PUNCH_HOLE) {
1272 if (offset >= inode->i_size)
1273 goto out;
1274
Chao Yua66c7b22013-11-22 16:52:50 +08001275 ret = punch_hole(inode, offset, len);
Chao Yub4ace332015-05-06 13:09:46 +08001276 } else if (mode & FALLOC_FL_COLLAPSE_RANGE) {
1277 ret = f2fs_collapse_range(inode, offset, len);
Chao Yu75cd4e02015-05-06 13:11:13 +08001278 } else if (mode & FALLOC_FL_ZERO_RANGE) {
1279 ret = f2fs_zero_range(inode, offset, len, mode);
Chao Yuf62185d2015-05-28 19:16:57 +08001280 } else if (mode & FALLOC_FL_INSERT_RANGE) {
1281 ret = f2fs_insert_range(inode, offset, len);
Chao Yub4ace332015-05-06 13:09:46 +08001282 } else {
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +09001283 ret = expand_inode_data(inode, offset, len, mode);
Chao Yub4ace332015-05-06 13:09:46 +08001284 }
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +09001285
Namjae Jeon3af60a42012-12-30 14:52:37 +09001286 if (!ret) {
1287 inode->i_mtime = inode->i_ctime = CURRENT_TIME;
1288 mark_inode_dirty(inode);
Jaegeuk Kimd0239e12016-01-08 16:57:48 -08001289 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
Namjae Jeon3af60a42012-12-30 14:52:37 +09001290 }
Chao Yu3375f692014-01-28 10:29:26 +08001291
Taehee Yoo587c0a42015-04-21 15:59:12 +09001292out:
Al Viro59551022016-01-22 15:40:57 -05001293 inode_unlock(inode);
Chao Yu3375f692014-01-28 10:29:26 +08001294
Namjae Jeonc01e2852013-04-23 17:00:52 +09001295 trace_f2fs_fallocate(inode, mode, offset, len, ret);
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +09001296 return ret;
1297}
1298
Jaegeuk Kim1e843712014-12-09 06:08:59 -08001299static int f2fs_release_file(struct inode *inode, struct file *filp)
1300{
Jaegeuk Kimde5307e2016-04-11 11:51:51 -07001301 /*
1302 * f2fs_relase_file is called at every close calls. So we should
1303 * not drop any inmemory pages by close called by other process.
1304 */
1305 if (!(filp->f_mode & FMODE_WRITE) ||
1306 atomic_read(&inode->i_writecount) != 1)
1307 return 0;
1308
Jaegeuk Kim1e843712014-12-09 06:08:59 -08001309 /* some remained atomic pages should discarded */
1310 if (f2fs_is_atomic_file(inode))
Chao Yu29b96b52016-02-06 14:38:29 +08001311 drop_inmem_pages(inode);
Jaegeuk Kim1e843712014-12-09 06:08:59 -08001312 if (f2fs_is_volatile_file(inode)) {
Jaegeuk Kim26dc3d42016-04-11 13:15:10 -07001313 clear_inode_flag(F2FS_I(inode), FI_VOLATILE_FILE);
Jaegeuk Kim1e843712014-12-09 06:08:59 -08001314 set_inode_flag(F2FS_I(inode), FI_DROP_CACHE);
1315 filemap_fdatawrite(inode->i_mapping);
1316 clear_inode_flag(F2FS_I(inode), FI_DROP_CACHE);
1317 }
1318 return 0;
1319}
1320
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +09001321#define F2FS_REG_FLMASK (~(FS_DIRSYNC_FL | FS_TOPDIR_FL))
1322#define F2FS_OTHER_FLMASK (FS_NODUMP_FL | FS_NOATIME_FL)
1323
1324static inline __u32 f2fs_mask_flags(umode_t mode, __u32 flags)
1325{
1326 if (S_ISDIR(mode))
1327 return flags;
1328 else if (S_ISREG(mode))
1329 return flags & F2FS_REG_FLMASK;
1330 else
1331 return flags & F2FS_OTHER_FLMASK;
1332}
1333
Jaegeuk Kim52656e62014-09-24 15:37:02 -07001334static int f2fs_ioc_getflags(struct file *filp, unsigned long arg)
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +09001335{
Al Viro6131ffa2013-02-27 16:59:05 -05001336 struct inode *inode = file_inode(filp);
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +09001337 struct f2fs_inode_info *fi = F2FS_I(inode);
Jaegeuk Kim52656e62014-09-24 15:37:02 -07001338 unsigned int flags = fi->i_flags & FS_FL_USER_VISIBLE;
1339 return put_user(flags, (int __user *)arg);
1340}
1341
1342static int f2fs_ioc_setflags(struct file *filp, unsigned long arg)
1343{
1344 struct inode *inode = file_inode(filp);
1345 struct f2fs_inode_info *fi = F2FS_I(inode);
1346 unsigned int flags = fi->i_flags & FS_FL_USER_VISIBLE;
1347 unsigned int oldflags;
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +09001348 int ret;
1349
Chao Yu7fb17fe2016-05-09 19:56:32 +08001350 if (!inode_owner_or_capable(inode))
1351 return -EACCES;
1352
1353 if (get_user(flags, (int __user *)arg))
1354 return -EFAULT;
1355
Jaegeuk Kim52656e62014-09-24 15:37:02 -07001356 ret = mnt_want_write_file(filp);
1357 if (ret)
1358 return ret;
1359
Jaegeuk Kim52656e62014-09-24 15:37:02 -07001360 flags = f2fs_mask_flags(inode->i_mode, flags);
1361
Al Viro59551022016-01-22 15:40:57 -05001362 inode_lock(inode);
Jaegeuk Kim52656e62014-09-24 15:37:02 -07001363
1364 oldflags = fi->i_flags;
1365
1366 if ((flags ^ oldflags) & (FS_APPEND_FL | FS_IMMUTABLE_FL)) {
1367 if (!capable(CAP_LINUX_IMMUTABLE)) {
Al Viro59551022016-01-22 15:40:57 -05001368 inode_unlock(inode);
Jaegeuk Kim52656e62014-09-24 15:37:02 -07001369 ret = -EPERM;
1370 goto out;
1371 }
1372 }
1373
1374 flags = flags & FS_FL_USER_MODIFIABLE;
1375 flags |= oldflags & ~FS_FL_USER_MODIFIABLE;
1376 fi->i_flags = flags;
Al Viro59551022016-01-22 15:40:57 -05001377 inode_unlock(inode);
Jaegeuk Kim52656e62014-09-24 15:37:02 -07001378
1379 f2fs_set_inode_flags(inode);
1380 inode->i_ctime = CURRENT_TIME;
1381 mark_inode_dirty(inode);
1382out:
1383 mnt_drop_write_file(filp);
1384 return ret;
1385}
1386
Chao Yud49f3e82015-01-23 20:36:04 +08001387static int f2fs_ioc_getversion(struct file *filp, unsigned long arg)
1388{
1389 struct inode *inode = file_inode(filp);
1390
1391 return put_user(inode->i_generation, (int __user *)arg);
1392}
1393
Jaegeuk Kim88b88a62014-10-06 17:39:50 -07001394static int f2fs_ioc_start_atomic_write(struct file *filp)
1395{
1396 struct inode *inode = file_inode(filp);
Chao Yuf4c9c742015-07-17 18:06:35 +08001397 int ret;
Jaegeuk Kim88b88a62014-10-06 17:39:50 -07001398
1399 if (!inode_owner_or_capable(inode))
1400 return -EACCES;
1401
Chao Yu7fb17fe2016-05-09 19:56:32 +08001402 ret = mnt_want_write_file(filp);
1403 if (ret)
1404 return ret;
1405
Chao Yu0fac5582016-05-09 19:56:33 +08001406 inode_lock(inode);
1407
Jaegeuk Kim1e843712014-12-09 06:08:59 -08001408 if (f2fs_is_atomic_file(inode))
Chao Yu7fb17fe2016-05-09 19:56:32 +08001409 goto out;
Jaegeuk Kim88b88a62014-10-06 17:39:50 -07001410
Chao Yuf4c9c742015-07-17 18:06:35 +08001411 ret = f2fs_convert_inline_inode(inode);
1412 if (ret)
Chao Yu7fb17fe2016-05-09 19:56:32 +08001413 goto out;
Jaegeuk Kim88b88a62014-10-06 17:39:50 -07001414
Chao Yuf4c9c742015-07-17 18:06:35 +08001415 set_inode_flag(F2FS_I(inode), FI_ATOMIC_FILE);
Jaegeuk Kimd0239e12016-01-08 16:57:48 -08001416 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
1417
Jaegeuk Kimc27753d2016-04-12 14:36:11 -07001418 if (!get_dirty_pages(inode))
Chao Yu7fb17fe2016-05-09 19:56:32 +08001419 goto out;
Jaegeuk Kimc27753d2016-04-12 14:36:11 -07001420
1421 f2fs_msg(F2FS_I_SB(inode)->sb, KERN_WARNING,
Jaegeuk Kim1beba1b2016-05-13 12:47:11 -07001422 "Unexpected flush for atomic writes: ino=%lu, npages=%lld",
Jaegeuk Kimc27753d2016-04-12 14:36:11 -07001423 inode->i_ino, get_dirty_pages(inode));
1424 ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX);
1425 if (ret)
1426 clear_inode_flag(F2FS_I(inode), FI_ATOMIC_FILE);
Chao Yu7fb17fe2016-05-09 19:56:32 +08001427out:
Chao Yu0fac5582016-05-09 19:56:33 +08001428 inode_unlock(inode);
Chao Yu7fb17fe2016-05-09 19:56:32 +08001429 mnt_drop_write_file(filp);
Jaegeuk Kimc27753d2016-04-12 14:36:11 -07001430 return ret;
Jaegeuk Kim88b88a62014-10-06 17:39:50 -07001431}
1432
1433static int f2fs_ioc_commit_atomic_write(struct file *filp)
1434{
1435 struct inode *inode = file_inode(filp);
1436 int ret;
1437
1438 if (!inode_owner_or_capable(inode))
1439 return -EACCES;
1440
1441 ret = mnt_want_write_file(filp);
1442 if (ret)
1443 return ret;
1444
Chao Yu0fac5582016-05-09 19:56:33 +08001445 inode_lock(inode);
1446
Chao Yu7fb17fe2016-05-09 19:56:32 +08001447 if (f2fs_is_volatile_file(inode))
1448 goto err_out;
1449
Jaegeuk Kim6282adb2015-07-25 00:29:17 -07001450 if (f2fs_is_atomic_file(inode)) {
1451 clear_inode_flag(F2FS_I(inode), FI_ATOMIC_FILE);
Chao Yu29b96b52016-02-06 14:38:29 +08001452 ret = commit_inmem_pages(inode);
Jaegeuk Kim447135a2016-01-09 17:08:38 -08001453 if (ret) {
1454 set_inode_flag(F2FS_I(inode), FI_ATOMIC_FILE);
Jaegeuk Kimedb27de2015-07-25 00:52:52 -07001455 goto err_out;
Jaegeuk Kim447135a2016-01-09 17:08:38 -08001456 }
Jaegeuk Kim6282adb2015-07-25 00:29:17 -07001457 }
Jaegeuk Kim88b88a62014-10-06 17:39:50 -07001458
Jaegeuk Kim608514d2016-04-15 09:43:17 -07001459 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true);
Jaegeuk Kimedb27de2015-07-25 00:52:52 -07001460err_out:
Chao Yu0fac5582016-05-09 19:56:33 +08001461 inode_unlock(inode);
Jaegeuk Kim88b88a62014-10-06 17:39:50 -07001462 mnt_drop_write_file(filp);
1463 return ret;
1464}
1465
Jaegeuk Kim02a13352014-10-06 16:11:16 -07001466static int f2fs_ioc_start_volatile_write(struct file *filp)
1467{
1468 struct inode *inode = file_inode(filp);
Chao Yuf4c9c742015-07-17 18:06:35 +08001469 int ret;
Jaegeuk Kim02a13352014-10-06 16:11:16 -07001470
1471 if (!inode_owner_or_capable(inode))
1472 return -EACCES;
1473
Chao Yu7fb17fe2016-05-09 19:56:32 +08001474 ret = mnt_want_write_file(filp);
Chao Yuf4c9c742015-07-17 18:06:35 +08001475 if (ret)
1476 return ret;
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07001477
Chao Yu0fac5582016-05-09 19:56:33 +08001478 inode_lock(inode);
1479
Chao Yu7fb17fe2016-05-09 19:56:32 +08001480 if (f2fs_is_volatile_file(inode))
1481 goto out;
1482
1483 ret = f2fs_convert_inline_inode(inode);
1484 if (ret)
1485 goto out;
1486
Chao Yuf4c9c742015-07-17 18:06:35 +08001487 set_inode_flag(F2FS_I(inode), FI_VOLATILE_FILE);
Jaegeuk Kimd0239e12016-01-08 16:57:48 -08001488 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
Chao Yu7fb17fe2016-05-09 19:56:32 +08001489out:
Chao Yu0fac5582016-05-09 19:56:33 +08001490 inode_unlock(inode);
Chao Yu7fb17fe2016-05-09 19:56:32 +08001491 mnt_drop_write_file(filp);
1492 return ret;
Jaegeuk Kim02a13352014-10-06 16:11:16 -07001493}
1494
Jaegeuk Kim1e843712014-12-09 06:08:59 -08001495static int f2fs_ioc_release_volatile_write(struct file *filp)
1496{
1497 struct inode *inode = file_inode(filp);
Chao Yu7fb17fe2016-05-09 19:56:32 +08001498 int ret;
Jaegeuk Kim1e843712014-12-09 06:08:59 -08001499
1500 if (!inode_owner_or_capable(inode))
1501 return -EACCES;
1502
Chao Yu7fb17fe2016-05-09 19:56:32 +08001503 ret = mnt_want_write_file(filp);
1504 if (ret)
1505 return ret;
1506
Chao Yu0fac5582016-05-09 19:56:33 +08001507 inode_lock(inode);
1508
Jaegeuk Kim1e843712014-12-09 06:08:59 -08001509 if (!f2fs_is_volatile_file(inode))
Chao Yu7fb17fe2016-05-09 19:56:32 +08001510 goto out;
Jaegeuk Kim1e843712014-12-09 06:08:59 -08001511
Chao Yu7fb17fe2016-05-09 19:56:32 +08001512 if (!f2fs_is_first_block_written(inode)) {
1513 ret = truncate_partial_data_page(inode, 0, true);
1514 goto out;
1515 }
Jaegeuk Kim3c6c2be2015-03-17 17:16:35 -07001516
Chao Yu7fb17fe2016-05-09 19:56:32 +08001517 ret = punch_hole(inode, 0, F2FS_BLKSIZE);
1518out:
Chao Yu0fac5582016-05-09 19:56:33 +08001519 inode_unlock(inode);
Chao Yu7fb17fe2016-05-09 19:56:32 +08001520 mnt_drop_write_file(filp);
1521 return ret;
Jaegeuk Kim1e843712014-12-09 06:08:59 -08001522}
1523
1524static int f2fs_ioc_abort_volatile_write(struct file *filp)
1525{
1526 struct inode *inode = file_inode(filp);
1527 int ret;
1528
1529 if (!inode_owner_or_capable(inode))
1530 return -EACCES;
1531
1532 ret = mnt_want_write_file(filp);
1533 if (ret)
1534 return ret;
1535
Chao Yu0fac5582016-05-09 19:56:33 +08001536 inode_lock(inode);
1537
Jaegeuk Kim26dc3d42016-04-11 13:15:10 -07001538 if (f2fs_is_atomic_file(inode))
Chao Yu29b96b52016-02-06 14:38:29 +08001539 drop_inmem_pages(inode);
Jaegeuk Kim732d5642015-12-29 15:46:33 -08001540 if (f2fs_is_volatile_file(inode)) {
1541 clear_inode_flag(F2FS_I(inode), FI_VOLATILE_FILE);
Jaegeuk Kim608514d2016-04-15 09:43:17 -07001542 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true);
Jaegeuk Kim732d5642015-12-29 15:46:33 -08001543 }
Jaegeuk Kimde6a8ec2015-06-08 17:51:10 -07001544
Chao Yu0fac5582016-05-09 19:56:33 +08001545 inode_unlock(inode);
1546
Jaegeuk Kim1e843712014-12-09 06:08:59 -08001547 mnt_drop_write_file(filp);
Jaegeuk Kimd0239e12016-01-08 16:57:48 -08001548 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
Jaegeuk Kim1e843712014-12-09 06:08:59 -08001549 return ret;
1550}
1551
Jaegeuk Kim1abff932015-01-08 19:15:53 -08001552static int f2fs_ioc_shutdown(struct file *filp, unsigned long arg)
1553{
1554 struct inode *inode = file_inode(filp);
1555 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1556 struct super_block *sb = sbi->sb;
1557 __u32 in;
Chao Yu7fb17fe2016-05-09 19:56:32 +08001558 int ret;
Jaegeuk Kim1abff932015-01-08 19:15:53 -08001559
1560 if (!capable(CAP_SYS_ADMIN))
1561 return -EPERM;
1562
1563 if (get_user(in, (__u32 __user *)arg))
1564 return -EFAULT;
1565
Chao Yu7fb17fe2016-05-09 19:56:32 +08001566 ret = mnt_want_write_file(filp);
1567 if (ret)
1568 return ret;
1569
Jaegeuk Kim1abff932015-01-08 19:15:53 -08001570 switch (in) {
1571 case F2FS_GOING_DOWN_FULLSYNC:
1572 sb = freeze_bdev(sb->s_bdev);
1573 if (sb && !IS_ERR(sb)) {
Jaegeuk Kim38f91ca2016-05-18 14:07:56 -07001574 f2fs_stop_checkpoint(sbi, false);
Jaegeuk Kim1abff932015-01-08 19:15:53 -08001575 thaw_bdev(sb->s_bdev, sb);
1576 }
1577 break;
1578 case F2FS_GOING_DOWN_METASYNC:
1579 /* do checkpoint only */
1580 f2fs_sync_fs(sb, 1);
Jaegeuk Kim38f91ca2016-05-18 14:07:56 -07001581 f2fs_stop_checkpoint(sbi, false);
Jaegeuk Kim1abff932015-01-08 19:15:53 -08001582 break;
1583 case F2FS_GOING_DOWN_NOSYNC:
Jaegeuk Kim38f91ca2016-05-18 14:07:56 -07001584 f2fs_stop_checkpoint(sbi, false);
Jaegeuk Kim1abff932015-01-08 19:15:53 -08001585 break;
Jaegeuk Kimc912a822015-10-07 09:46:37 -07001586 case F2FS_GOING_DOWN_METAFLUSH:
1587 sync_meta_pages(sbi, META, LONG_MAX);
Jaegeuk Kim38f91ca2016-05-18 14:07:56 -07001588 f2fs_stop_checkpoint(sbi, false);
Jaegeuk Kimc912a822015-10-07 09:46:37 -07001589 break;
Jaegeuk Kim1abff932015-01-08 19:15:53 -08001590 default:
Chao Yu7fb17fe2016-05-09 19:56:32 +08001591 ret = -EINVAL;
1592 goto out;
Jaegeuk Kim1abff932015-01-08 19:15:53 -08001593 }
Jaegeuk Kimd0239e12016-01-08 16:57:48 -08001594 f2fs_update_time(sbi, REQ_TIME);
Chao Yu7fb17fe2016-05-09 19:56:32 +08001595out:
1596 mnt_drop_write_file(filp);
1597 return ret;
Jaegeuk Kim1abff932015-01-08 19:15:53 -08001598}
1599
Jaegeuk Kim52656e62014-09-24 15:37:02 -07001600static int f2fs_ioc_fitrim(struct file *filp, unsigned long arg)
1601{
1602 struct inode *inode = file_inode(filp);
1603 struct super_block *sb = inode->i_sb;
1604 struct request_queue *q = bdev_get_queue(sb->s_bdev);
1605 struct fstrim_range range;
1606 int ret;
1607
1608 if (!capable(CAP_SYS_ADMIN))
1609 return -EPERM;
1610
1611 if (!blk_queue_discard(q))
1612 return -EOPNOTSUPP;
1613
1614 if (copy_from_user(&range, (struct fstrim_range __user *)arg,
1615 sizeof(range)))
1616 return -EFAULT;
1617
Chao Yu7fb17fe2016-05-09 19:56:32 +08001618 ret = mnt_want_write_file(filp);
1619 if (ret)
1620 return ret;
1621
Jaegeuk Kim52656e62014-09-24 15:37:02 -07001622 range.minlen = max((unsigned int)range.minlen,
1623 q->limits.discard_granularity);
1624 ret = f2fs_trim_fs(F2FS_SB(sb), &range);
Chao Yu7fb17fe2016-05-09 19:56:32 +08001625 mnt_drop_write_file(filp);
Jaegeuk Kim52656e62014-09-24 15:37:02 -07001626 if (ret < 0)
1627 return ret;
1628
1629 if (copy_to_user((struct fstrim_range __user *)arg, &range,
1630 sizeof(range)))
1631 return -EFAULT;
Jaegeuk Kimd0239e12016-01-08 16:57:48 -08001632 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
Jaegeuk Kim52656e62014-09-24 15:37:02 -07001633 return 0;
1634}
1635
Jaegeuk Kimf424f662015-04-20 15:19:06 -07001636static bool uuid_is_nonzero(__u8 u[16])
1637{
1638 int i;
1639
1640 for (i = 0; i < 16; i++)
1641 if (u[i])
1642 return true;
1643 return false;
1644}
1645
1646static int f2fs_ioc_set_encryption_policy(struct file *filp, unsigned long arg)
1647{
Jaegeuk Kim0b81d072015-05-15 16:26:10 -07001648 struct fscrypt_policy policy;
Jaegeuk Kimf424f662015-04-20 15:19:06 -07001649 struct inode *inode = file_inode(filp);
Chao Yu7fb17fe2016-05-09 19:56:32 +08001650 int ret;
Jaegeuk Kimf424f662015-04-20 15:19:06 -07001651
Jaegeuk Kim0b81d072015-05-15 16:26:10 -07001652 if (copy_from_user(&policy, (struct fscrypt_policy __user *)arg,
1653 sizeof(policy)))
Jaegeuk Kimf424f662015-04-20 15:19:06 -07001654 return -EFAULT;
1655
Chao Yu7fb17fe2016-05-09 19:56:32 +08001656 ret = mnt_want_write_file(filp);
1657 if (ret)
1658 return ret;
1659
Jaegeuk Kimd0239e12016-01-08 16:57:48 -08001660 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
Chao Yu7fb17fe2016-05-09 19:56:32 +08001661 ret = fscrypt_process_policy(inode, &policy);
1662
1663 mnt_drop_write_file(filp);
1664 return ret;
Jaegeuk Kimf424f662015-04-20 15:19:06 -07001665}
1666
1667static int f2fs_ioc_get_encryption_policy(struct file *filp, unsigned long arg)
1668{
Jaegeuk Kim0b81d072015-05-15 16:26:10 -07001669 struct fscrypt_policy policy;
Jaegeuk Kimf424f662015-04-20 15:19:06 -07001670 struct inode *inode = file_inode(filp);
1671 int err;
1672
Jaegeuk Kim0b81d072015-05-15 16:26:10 -07001673 err = fscrypt_get_policy(inode, &policy);
Jaegeuk Kimf424f662015-04-20 15:19:06 -07001674 if (err)
1675 return err;
1676
Jaegeuk Kim0b81d072015-05-15 16:26:10 -07001677 if (copy_to_user((struct fscrypt_policy __user *)arg, &policy, sizeof(policy)))
Jaegeuk Kimf424f662015-04-20 15:19:06 -07001678 return -EFAULT;
1679 return 0;
Jaegeuk Kimf424f662015-04-20 15:19:06 -07001680}
1681
1682static int f2fs_ioc_get_encryption_pwsalt(struct file *filp, unsigned long arg)
1683{
1684 struct inode *inode = file_inode(filp);
1685 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1686 int err;
1687
1688 if (!f2fs_sb_has_crypto(inode->i_sb))
1689 return -EOPNOTSUPP;
1690
1691 if (uuid_is_nonzero(sbi->raw_super->encrypt_pw_salt))
1692 goto got_it;
1693
1694 err = mnt_want_write_file(filp);
1695 if (err)
1696 return err;
1697
1698 /* update superblock with uuid */
1699 generate_random_uuid(sbi->raw_super->encrypt_pw_salt);
1700
Chao Yuc5bda1c2015-06-08 13:28:03 +08001701 err = f2fs_commit_super(sbi, false);
Jaegeuk Kimf424f662015-04-20 15:19:06 -07001702 if (err) {
1703 /* undo new data */
1704 memset(sbi->raw_super->encrypt_pw_salt, 0, 16);
Chao Yue8240f62015-12-15 17:19:26 +08001705 mnt_drop_write_file(filp);
Jaegeuk Kimf424f662015-04-20 15:19:06 -07001706 return err;
1707 }
Chao Yue8240f62015-12-15 17:19:26 +08001708 mnt_drop_write_file(filp);
Jaegeuk Kimf424f662015-04-20 15:19:06 -07001709got_it:
1710 if (copy_to_user((__u8 __user *)arg, sbi->raw_super->encrypt_pw_salt,
1711 16))
1712 return -EFAULT;
1713 return 0;
1714}
1715
Chao Yuc1c1b582015-07-10 18:08:10 +08001716static int f2fs_ioc_gc(struct file *filp, unsigned long arg)
1717{
1718 struct inode *inode = file_inode(filp);
1719 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
Chao Yud530d4d2015-10-05 22:22:44 +08001720 __u32 sync;
Chao Yu7fb17fe2016-05-09 19:56:32 +08001721 int ret;
Chao Yuc1c1b582015-07-10 18:08:10 +08001722
1723 if (!capable(CAP_SYS_ADMIN))
1724 return -EPERM;
1725
Chao Yud530d4d2015-10-05 22:22:44 +08001726 if (get_user(sync, (__u32 __user *)arg))
Chao Yuc1c1b582015-07-10 18:08:10 +08001727 return -EFAULT;
1728
Chao Yud530d4d2015-10-05 22:22:44 +08001729 if (f2fs_readonly(sbi->sb))
1730 return -EROFS;
Chao Yuc1c1b582015-07-10 18:08:10 +08001731
Chao Yu7fb17fe2016-05-09 19:56:32 +08001732 ret = mnt_want_write_file(filp);
1733 if (ret)
1734 return ret;
1735
Chao Yud530d4d2015-10-05 22:22:44 +08001736 if (!sync) {
Chao Yu7fb17fe2016-05-09 19:56:32 +08001737 if (!mutex_trylock(&sbi->gc_mutex)) {
1738 ret = -EBUSY;
1739 goto out;
1740 }
Chao Yud530d4d2015-10-05 22:22:44 +08001741 } else {
1742 mutex_lock(&sbi->gc_mutex);
Chao Yuc1c1b582015-07-10 18:08:10 +08001743 }
1744
Chao Yu7fb17fe2016-05-09 19:56:32 +08001745 ret = f2fs_gc(sbi, sync);
1746out:
1747 mnt_drop_write_file(filp);
1748 return ret;
Chao Yuc1c1b582015-07-10 18:08:10 +08001749}
1750
Chao Yu456b88e2015-10-05 22:24:19 +08001751static int f2fs_ioc_write_checkpoint(struct file *filp, unsigned long arg)
1752{
1753 struct inode *inode = file_inode(filp);
1754 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
Chao Yu7fb17fe2016-05-09 19:56:32 +08001755 int ret;
Chao Yu456b88e2015-10-05 22:24:19 +08001756
1757 if (!capable(CAP_SYS_ADMIN))
1758 return -EPERM;
1759
1760 if (f2fs_readonly(sbi->sb))
1761 return -EROFS;
1762
Chao Yu7fb17fe2016-05-09 19:56:32 +08001763 ret = mnt_want_write_file(filp);
1764 if (ret)
1765 return ret;
1766
1767 ret = f2fs_sync_fs(sbi->sb, 1);
1768
1769 mnt_drop_write_file(filp);
1770 return ret;
Chao Yu456b88e2015-10-05 22:24:19 +08001771}
1772
Chao Yud323d002015-10-27 09:53:45 +08001773static int f2fs_defragment_range(struct f2fs_sb_info *sbi,
1774 struct file *filp,
1775 struct f2fs_defragment *range)
1776{
1777 struct inode *inode = file_inode(filp);
Chao Yuda859852016-01-26 15:42:58 +08001778 struct f2fs_map_blocks map = { .m_next_pgofs = NULL };
Chao Yud323d002015-10-27 09:53:45 +08001779 struct extent_info ei;
1780 pgoff_t pg_start, pg_end;
Chao Yu3519e3f2015-12-01 11:56:52 +08001781 unsigned int blk_per_seg = sbi->blocks_per_seg;
Chao Yud323d002015-10-27 09:53:45 +08001782 unsigned int total = 0, sec_num;
Chao Yu3519e3f2015-12-01 11:56:52 +08001783 unsigned int pages_per_sec = sbi->segs_per_sec * blk_per_seg;
Chao Yud323d002015-10-27 09:53:45 +08001784 block_t blk_end = 0;
1785 bool fragmented = false;
1786 int err;
1787
1788 /* if in-place-update policy is enabled, don't waste time here */
1789 if (need_inplace_update(inode))
1790 return -EINVAL;
1791
Kirill A. Shutemov09cbfea2016-04-01 15:29:47 +03001792 pg_start = range->start >> PAGE_SHIFT;
1793 pg_end = (range->start + range->len) >> PAGE_SHIFT;
Chao Yud323d002015-10-27 09:53:45 +08001794
Jaegeuk Kim2c4db1a2016-01-07 14:15:04 -08001795 f2fs_balance_fs(sbi, true);
Chao Yud323d002015-10-27 09:53:45 +08001796
Al Viro59551022016-01-22 15:40:57 -05001797 inode_lock(inode);
Chao Yud323d002015-10-27 09:53:45 +08001798
1799 /* writeback all dirty pages in the range */
1800 err = filemap_write_and_wait_range(inode->i_mapping, range->start,
Fan Lid8fe4f02015-12-14 13:34:00 +08001801 range->start + range->len - 1);
Chao Yud323d002015-10-27 09:53:45 +08001802 if (err)
1803 goto out;
1804
1805 /*
1806 * lookup mapping info in extent cache, skip defragmenting if physical
1807 * block addresses are continuous.
1808 */
1809 if (f2fs_lookup_extent_cache(inode, pg_start, &ei)) {
1810 if (ei.fofs + ei.len >= pg_end)
1811 goto out;
1812 }
1813
1814 map.m_lblk = pg_start;
Chao Yud323d002015-10-27 09:53:45 +08001815
1816 /*
1817 * lookup mapping info in dnode page cache, skip defragmenting if all
1818 * physical block addresses are continuous even if there are hole(s)
1819 * in logical blocks.
1820 */
1821 while (map.m_lblk < pg_end) {
Fan Lia1c1e9b2015-12-15 17:02:41 +08001822 map.m_len = pg_end - map.m_lblk;
Chao Yud323d002015-10-27 09:53:45 +08001823 err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_READ);
1824 if (err)
1825 goto out;
1826
1827 if (!(map.m_flags & F2FS_MAP_FLAGS)) {
1828 map.m_lblk++;
Chao Yud323d002015-10-27 09:53:45 +08001829 continue;
1830 }
1831
1832 if (blk_end && blk_end != map.m_pblk) {
1833 fragmented = true;
1834 break;
1835 }
1836 blk_end = map.m_pblk + map.m_len;
1837
1838 map.m_lblk += map.m_len;
Chao Yud323d002015-10-27 09:53:45 +08001839 }
1840
1841 if (!fragmented)
1842 goto out;
1843
1844 map.m_lblk = pg_start;
1845 map.m_len = pg_end - pg_start;
1846
1847 sec_num = (map.m_len + pages_per_sec - 1) / pages_per_sec;
1848
1849 /*
1850 * make sure there are enough free section for LFS allocation, this can
1851 * avoid defragment running in SSR mode when free section are allocated
1852 * intensively
1853 */
1854 if (has_not_enough_free_secs(sbi, sec_num)) {
1855 err = -EAGAIN;
1856 goto out;
1857 }
1858
1859 while (map.m_lblk < pg_end) {
1860 pgoff_t idx;
1861 int cnt = 0;
1862
1863do_map:
Fan Lia1c1e9b2015-12-15 17:02:41 +08001864 map.m_len = pg_end - map.m_lblk;
Chao Yud323d002015-10-27 09:53:45 +08001865 err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_READ);
1866 if (err)
1867 goto clear_out;
1868
1869 if (!(map.m_flags & F2FS_MAP_FLAGS)) {
1870 map.m_lblk++;
1871 continue;
1872 }
1873
1874 set_inode_flag(F2FS_I(inode), FI_DO_DEFRAG);
1875
1876 idx = map.m_lblk;
1877 while (idx < map.m_lblk + map.m_len && cnt < blk_per_seg) {
1878 struct page *page;
1879
1880 page = get_lock_data_page(inode, idx, true);
1881 if (IS_ERR(page)) {
1882 err = PTR_ERR(page);
1883 goto clear_out;
1884 }
1885
1886 set_page_dirty(page);
1887 f2fs_put_page(page, 1);
1888
1889 idx++;
1890 cnt++;
1891 total++;
1892 }
1893
1894 map.m_lblk = idx;
Chao Yud323d002015-10-27 09:53:45 +08001895
1896 if (idx < pg_end && cnt < blk_per_seg)
1897 goto do_map;
1898
1899 clear_inode_flag(F2FS_I(inode), FI_DO_DEFRAG);
1900
1901 err = filemap_fdatawrite(inode->i_mapping);
1902 if (err)
1903 goto out;
1904 }
1905clear_out:
1906 clear_inode_flag(F2FS_I(inode), FI_DO_DEFRAG);
1907out:
Al Viro59551022016-01-22 15:40:57 -05001908 inode_unlock(inode);
Chao Yud323d002015-10-27 09:53:45 +08001909 if (!err)
Kirill A. Shutemov09cbfea2016-04-01 15:29:47 +03001910 range->len = (u64)total << PAGE_SHIFT;
Chao Yud323d002015-10-27 09:53:45 +08001911 return err;
1912}
1913
1914static int f2fs_ioc_defragment(struct file *filp, unsigned long arg)
1915{
1916 struct inode *inode = file_inode(filp);
1917 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1918 struct f2fs_defragment range;
1919 int err;
1920
1921 if (!capable(CAP_SYS_ADMIN))
1922 return -EPERM;
1923
1924 if (!S_ISREG(inode->i_mode))
1925 return -EINVAL;
1926
1927 err = mnt_want_write_file(filp);
1928 if (err)
1929 return err;
1930
1931 if (f2fs_readonly(sbi->sb)) {
1932 err = -EROFS;
1933 goto out;
1934 }
1935
1936 if (copy_from_user(&range, (struct f2fs_defragment __user *)arg,
1937 sizeof(range))) {
1938 err = -EFAULT;
1939 goto out;
1940 }
1941
1942 /* verify alignment of offset & size */
1943 if (range.start & (F2FS_BLKSIZE - 1) ||
1944 range.len & (F2FS_BLKSIZE - 1)) {
1945 err = -EINVAL;
1946 goto out;
1947 }
1948
1949 err = f2fs_defragment_range(sbi, filp, &range);
Jaegeuk Kimd0239e12016-01-08 16:57:48 -08001950 f2fs_update_time(sbi, REQ_TIME);
Chao Yud323d002015-10-27 09:53:45 +08001951 if (err < 0)
1952 goto out;
1953
1954 if (copy_to_user((struct f2fs_defragment __user *)arg, &range,
1955 sizeof(range)))
1956 err = -EFAULT;
1957out:
1958 mnt_drop_write_file(filp);
1959 return err;
1960}
1961
Jaegeuk Kim52656e62014-09-24 15:37:02 -07001962long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
1963{
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +09001964 switch (cmd) {
Namjae Jeon6a3e8ef2013-06-08 21:25:28 +09001965 case F2FS_IOC_GETFLAGS:
Jaegeuk Kim52656e62014-09-24 15:37:02 -07001966 return f2fs_ioc_getflags(filp, arg);
Namjae Jeon6a3e8ef2013-06-08 21:25:28 +09001967 case F2FS_IOC_SETFLAGS:
Jaegeuk Kim52656e62014-09-24 15:37:02 -07001968 return f2fs_ioc_setflags(filp, arg);
Chao Yud49f3e82015-01-23 20:36:04 +08001969 case F2FS_IOC_GETVERSION:
1970 return f2fs_ioc_getversion(filp, arg);
Jaegeuk Kim88b88a62014-10-06 17:39:50 -07001971 case F2FS_IOC_START_ATOMIC_WRITE:
1972 return f2fs_ioc_start_atomic_write(filp);
1973 case F2FS_IOC_COMMIT_ATOMIC_WRITE:
1974 return f2fs_ioc_commit_atomic_write(filp);
Jaegeuk Kim02a13352014-10-06 16:11:16 -07001975 case F2FS_IOC_START_VOLATILE_WRITE:
1976 return f2fs_ioc_start_volatile_write(filp);
Jaegeuk Kim1e843712014-12-09 06:08:59 -08001977 case F2FS_IOC_RELEASE_VOLATILE_WRITE:
1978 return f2fs_ioc_release_volatile_write(filp);
1979 case F2FS_IOC_ABORT_VOLATILE_WRITE:
1980 return f2fs_ioc_abort_volatile_write(filp);
Jaegeuk Kim1abff932015-01-08 19:15:53 -08001981 case F2FS_IOC_SHUTDOWN:
1982 return f2fs_ioc_shutdown(filp, arg);
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -07001983 case FITRIM:
Jaegeuk Kim52656e62014-09-24 15:37:02 -07001984 return f2fs_ioc_fitrim(filp, arg);
Jaegeuk Kimf424f662015-04-20 15:19:06 -07001985 case F2FS_IOC_SET_ENCRYPTION_POLICY:
1986 return f2fs_ioc_set_encryption_policy(filp, arg);
1987 case F2FS_IOC_GET_ENCRYPTION_POLICY:
1988 return f2fs_ioc_get_encryption_policy(filp, arg);
1989 case F2FS_IOC_GET_ENCRYPTION_PWSALT:
1990 return f2fs_ioc_get_encryption_pwsalt(filp, arg);
Chao Yuc1c1b582015-07-10 18:08:10 +08001991 case F2FS_IOC_GARBAGE_COLLECT:
1992 return f2fs_ioc_gc(filp, arg);
Chao Yu456b88e2015-10-05 22:24:19 +08001993 case F2FS_IOC_WRITE_CHECKPOINT:
1994 return f2fs_ioc_write_checkpoint(filp, arg);
Chao Yud323d002015-10-27 09:53:45 +08001995 case F2FS_IOC_DEFRAGMENT:
1996 return f2fs_ioc_defragment(filp, arg);
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +09001997 default:
1998 return -ENOTTY;
1999 }
2000}
2001
Jaegeuk Kimfcc85a42015-04-21 20:39:58 -07002002static ssize_t f2fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
2003{
Jaegeuk Kimb439b102016-02-03 13:09:09 -08002004 struct file *file = iocb->ki_filp;
2005 struct inode *inode = file_inode(file);
2006 ssize_t ret;
Jaegeuk Kimfcc85a42015-04-21 20:39:58 -07002007
2008 if (f2fs_encrypted_inode(inode) &&
Jaegeuk Kim0b81d072015-05-15 16:26:10 -07002009 !fscrypt_has_encryption_key(inode) &&
2010 fscrypt_get_encryption_info(inode))
Jaegeuk Kimfcc85a42015-04-21 20:39:58 -07002011 return -EACCES;
2012
Jaegeuk Kimb439b102016-02-03 13:09:09 -08002013 inode_lock(inode);
2014 ret = generic_write_checks(iocb, from);
2015 if (ret > 0) {
2016 ret = f2fs_preallocate_blocks(iocb, from);
2017 if (!ret)
2018 ret = __generic_file_write_iter(iocb, from);
2019 }
2020 inode_unlock(inode);
2021
Christoph Hellwige2592212016-04-07 08:52:01 -07002022 if (ret > 0)
2023 ret = generic_write_sync(iocb, ret);
Jaegeuk Kimb439b102016-02-03 13:09:09 -08002024 return ret;
Jaegeuk Kimfcc85a42015-04-21 20:39:58 -07002025}
2026
Namjae Jeone9750822013-02-04 23:41:41 +09002027#ifdef CONFIG_COMPAT
2028long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
2029{
2030 switch (cmd) {
2031 case F2FS_IOC32_GETFLAGS:
2032 cmd = F2FS_IOC_GETFLAGS;
2033 break;
2034 case F2FS_IOC32_SETFLAGS:
2035 cmd = F2FS_IOC_SETFLAGS;
2036 break;
Chao Yu04ef4b62015-11-10 18:44:20 +08002037 case F2FS_IOC32_GETVERSION:
2038 cmd = F2FS_IOC_GETVERSION;
2039 break;
2040 case F2FS_IOC_START_ATOMIC_WRITE:
2041 case F2FS_IOC_COMMIT_ATOMIC_WRITE:
2042 case F2FS_IOC_START_VOLATILE_WRITE:
2043 case F2FS_IOC_RELEASE_VOLATILE_WRITE:
2044 case F2FS_IOC_ABORT_VOLATILE_WRITE:
2045 case F2FS_IOC_SHUTDOWN:
2046 case F2FS_IOC_SET_ENCRYPTION_POLICY:
2047 case F2FS_IOC_GET_ENCRYPTION_PWSALT:
2048 case F2FS_IOC_GET_ENCRYPTION_POLICY:
2049 case F2FS_IOC_GARBAGE_COLLECT:
2050 case F2FS_IOC_WRITE_CHECKPOINT:
2051 case F2FS_IOC_DEFRAGMENT:
2052 break;
Namjae Jeone9750822013-02-04 23:41:41 +09002053 default:
2054 return -ENOIOCTLCMD;
2055 }
2056 return f2fs_ioctl(file, cmd, (unsigned long) compat_ptr(arg));
2057}
2058#endif
2059
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +09002060const struct file_operations f2fs_file_operations = {
Chao Yu267378d2014-04-23 14:10:24 +08002061 .llseek = f2fs_llseek,
Al Viroaad4f8b2014-04-02 14:33:16 -04002062 .read_iter = generic_file_read_iter,
Jaegeuk Kimfcc85a42015-04-21 20:39:58 -07002063 .write_iter = f2fs_file_write_iter,
2064 .open = f2fs_file_open,
Jaegeuk Kim12662232014-12-05 14:37:37 -08002065 .release = f2fs_release_file,
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +09002066 .mmap = f2fs_file_mmap,
2067 .fsync = f2fs_sync_file,
2068 .fallocate = f2fs_fallocate,
2069 .unlocked_ioctl = f2fs_ioctl,
Namjae Jeone9750822013-02-04 23:41:41 +09002070#ifdef CONFIG_COMPAT
2071 .compat_ioctl = f2fs_compat_ioctl,
2072#endif
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +09002073 .splice_read = generic_file_splice_read,
Al Viro8d020762014-04-05 04:27:08 -04002074 .splice_write = iter_file_splice_write,
Jaegeuk Kimfbfa2cc2012-11-02 17:09:44 +09002075};