blob: 362e5f614450e53e2b407b988b4b70254a193ca2 [file] [log] [blame]
Dave Kleikamp470decc2006-10-11 01:20:57 -07001/*
Mingming Caof7f4bcc2006-10-11 01:20:59 -07002 * linux/fs/jbd2/commit.c
Dave Kleikamp470decc2006-10-11 01:20:57 -07003 *
4 * Written by Stephen C. Tweedie <sct@redhat.com>, 1998
5 *
6 * Copyright 1998 Red Hat corp --- All Rights Reserved
7 *
8 * This file is part of the Linux kernel and is made available under
9 * the terms of the GNU General Public License, version 2, or at your
10 * option, any later version, incorporated herein by reference.
11 *
12 * Journal commit routines for the generic filesystem journaling code;
13 * part of the ext2fs journaling system.
14 */
15
16#include <linux/time.h>
17#include <linux/fs.h>
Mingming Caof7f4bcc2006-10-11 01:20:59 -070018#include <linux/jbd2.h>
Dave Kleikamp470decc2006-10-11 01:20:57 -070019#include <linux/errno.h>
20#include <linux/slab.h>
21#include <linux/mm.h>
22#include <linux/pagemap.h>
Johann Lombardi8e85fb32008-01-28 23:58:27 -050023#include <linux/jiffies.h>
Girish Shilamkar818d2762008-01-28 23:58:27 -050024#include <linux/crc32.h>
Aneesh Kumar K.Vcd1aac32008-07-11 19:27:31 -040025#include <linux/writeback.h>
26#include <linux/backing-dev.h>
Theodore Ts'ofd984962009-01-05 21:34:13 -050027#include <linux/bio.h>
Theodore Ts'o0e3d2a62009-09-11 09:30:12 -040028#include <linux/blkdev.h>
Brian King39e3ac22010-10-27 21:25:12 -040029#include <linux/bitops.h>
Theodore Ts'o879c5e62009-06-17 11:47:48 -040030#include <trace/events/jbd2.h>
Dave Kleikamp470decc2006-10-11 01:20:57 -070031
32/*
Jan Karab34090e2013-06-04 12:08:56 -040033 * IO end handler for temporary buffer_heads handling writes to the journal.
Dave Kleikamp470decc2006-10-11 01:20:57 -070034 */
35static void journal_end_buffer_io_sync(struct buffer_head *bh, int uptodate)
36{
Jan Karab34090e2013-06-04 12:08:56 -040037 struct buffer_head *orig_bh = bh->b_private;
38
Dave Kleikamp470decc2006-10-11 01:20:57 -070039 BUFFER_TRACE(bh, "");
40 if (uptodate)
41 set_buffer_uptodate(bh);
42 else
43 clear_buffer_uptodate(bh);
Jan Karab34090e2013-06-04 12:08:56 -040044 if (orig_bh) {
45 clear_bit_unlock(BH_Shadow, &orig_bh->b_state);
Peter Zijlstra4e857c52014-03-17 18:06:10 +010046 smp_mb__after_atomic();
Jan Karab34090e2013-06-04 12:08:56 -040047 wake_up_bit(&orig_bh->b_state, BH_Shadow);
48 }
Dave Kleikamp470decc2006-10-11 01:20:57 -070049 unlock_buffer(bh);
50}
51
52/*
Jan Kara87c89c22008-07-11 19:27:31 -040053 * When an ext4 file is truncated, it is possible that some pages are not
54 * successfully freed, because they are attached to a committing transaction.
Dave Kleikamp470decc2006-10-11 01:20:57 -070055 * After the transaction commits, these pages are left on the LRU, with no
56 * ->mapping, and with attached buffers. These pages are trivially reclaimable
57 * by the VM, but their apparent absence upsets the VM accounting, and it makes
58 * the numbers in /proc/meminfo look odd.
59 *
60 * So here, we have a buffer which has just come off the forget list. Look to
61 * see if we can strip all buffers from the backing page.
62 *
63 * Called under lock_journal(), and possibly under journal_datalist_lock. The
64 * caller provided us with a ref against the buffer, and we drop that here.
65 */
66static void release_buffer_page(struct buffer_head *bh)
67{
68 struct page *page;
69
70 if (buffer_dirty(bh))
71 goto nope;
72 if (atomic_read(&bh->b_count) != 1)
73 goto nope;
74 page = bh->b_page;
75 if (!page)
76 goto nope;
77 if (page->mapping)
78 goto nope;
79
80 /* OK, it's a truncated page */
Nick Piggin529ae9a2008-08-02 12:01:03 +020081 if (!trylock_page(page))
Dave Kleikamp470decc2006-10-11 01:20:57 -070082 goto nope;
83
84 page_cache_get(page);
85 __brelse(bh);
86 try_to_free_buffers(page);
87 unlock_page(page);
88 page_cache_release(page);
89 return;
90
91nope:
92 __brelse(bh);
93}
94
Jan Karae5a120a2013-06-04 12:06:01 -040095static void jbd2_commit_block_csum_set(journal_t *j, struct buffer_head *bh)
Darrick J. Wong1f56c582012-05-27 08:10:25 -040096{
97 struct commit_header *h;
98 __u32 csum;
99
Darrick J. Wongdb9ee222014-08-27 18:40:07 -0400100 if (!jbd2_journal_has_csum_v2or3(j))
Darrick J. Wong1f56c582012-05-27 08:10:25 -0400101 return;
102
Jan Karae5a120a2013-06-04 12:06:01 -0400103 h = (struct commit_header *)(bh->b_data);
Darrick J. Wong1f56c582012-05-27 08:10:25 -0400104 h->h_chksum_type = 0;
105 h->h_chksum_size = 0;
106 h->h_chksum[0] = 0;
Jan Karae5a120a2013-06-04 12:06:01 -0400107 csum = jbd2_chksum(j, j->j_csum_seed, bh->b_data, j->j_blocksize);
Darrick J. Wong1f56c582012-05-27 08:10:25 -0400108 h->h_chksum[0] = cpu_to_be32(csum);
109}
110
Dave Kleikamp470decc2006-10-11 01:20:57 -0700111/*
Girish Shilamkar818d2762008-01-28 23:58:27 -0500112 * Done it all: now submit the commit record. We should have
Dave Kleikamp470decc2006-10-11 01:20:57 -0700113 * cleaned up our previous buffers by now, so if we are in abort
114 * mode we can now just skip the rest of the journal write
115 * entirely.
116 *
117 * Returns 1 if the journal needs to be aborted or 0 on success
118 */
Girish Shilamkar818d2762008-01-28 23:58:27 -0500119static int journal_submit_commit_record(journal_t *journal,
120 transaction_t *commit_transaction,
121 struct buffer_head **cbh,
122 __u32 crc32_sum)
Dave Kleikamp470decc2006-10-11 01:20:57 -0700123{
Girish Shilamkar818d2762008-01-28 23:58:27 -0500124 struct commit_header *tmp;
Dave Kleikamp470decc2006-10-11 01:20:57 -0700125 struct buffer_head *bh;
Girish Shilamkar818d2762008-01-28 23:58:27 -0500126 int ret;
Theodore Ts'o736603a2008-07-11 19:27:31 -0400127 struct timespec now = current_kernel_time();
Dave Kleikamp470decc2006-10-11 01:20:57 -0700128
Zhang Huan6cba6112011-04-05 19:16:20 -0400129 *cbh = NULL;
130
Dave Kleikamp470decc2006-10-11 01:20:57 -0700131 if (is_journal_aborted(journal))
132 return 0;
133
Jan Karae5a120a2013-06-04 12:06:01 -0400134 bh = jbd2_journal_get_descriptor_buffer(journal);
135 if (!bh)
Dave Kleikamp470decc2006-10-11 01:20:57 -0700136 return 1;
137
Girish Shilamkar818d2762008-01-28 23:58:27 -0500138 tmp = (struct commit_header *)bh->b_data;
139 tmp->h_magic = cpu_to_be32(JBD2_MAGIC_NUMBER);
140 tmp->h_blocktype = cpu_to_be32(JBD2_COMMIT_BLOCK);
141 tmp->h_sequence = cpu_to_be32(commit_transaction->t_tid);
Theodore Ts'o736603a2008-07-11 19:27:31 -0400142 tmp->h_commit_sec = cpu_to_be64(now.tv_sec);
143 tmp->h_commit_nsec = cpu_to_be32(now.tv_nsec);
Girish Shilamkar818d2762008-01-28 23:58:27 -0500144
145 if (JBD2_HAS_COMPAT_FEATURE(journal,
146 JBD2_FEATURE_COMPAT_CHECKSUM)) {
147 tmp->h_chksum_type = JBD2_CRC32_CHKSUM;
148 tmp->h_chksum_size = JBD2_CRC32_CHKSUM_SIZE;
149 tmp->h_chksum[0] = cpu_to_be32(crc32_sum);
Dave Kleikamp470decc2006-10-11 01:20:57 -0700150 }
Jan Karae5a120a2013-06-04 12:06:01 -0400151 jbd2_commit_block_csum_set(journal, bh);
Dave Kleikamp470decc2006-10-11 01:20:57 -0700152
Jan Karae5a120a2013-06-04 12:06:01 -0400153 BUFFER_TRACE(bh, "submit commit block");
Girish Shilamkar818d2762008-01-28 23:58:27 -0500154 lock_buffer(bh);
Theodore Ts'o45a90bf2008-10-06 12:04:02 -0400155 clear_buffer_dirty(bh);
Girish Shilamkar818d2762008-01-28 23:58:27 -0500156 set_buffer_uptodate(bh);
157 bh->b_end_io = journal_end_buffer_io_sync;
158
159 if (journal->j_flags & JBD2_BARRIER &&
Theodore Ts'o0e3d2a62009-09-11 09:30:12 -0400160 !JBD2_HAS_INCOMPAT_FEATURE(journal,
Christoph Hellwig9c355752010-08-18 05:29:17 -0400161 JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT))
Jens Axboe721a9602011-03-09 11:56:30 +0100162 ret = submit_bh(WRITE_SYNC | WRITE_FLUSH_FUA, bh);
Christoph Hellwig9c355752010-08-18 05:29:17 -0400163 else
Jens Axboe721a9602011-03-09 11:56:30 +0100164 ret = submit_bh(WRITE_SYNC, bh);
Christoph Hellwig9c355752010-08-18 05:29:17 -0400165
Girish Shilamkar818d2762008-01-28 23:58:27 -0500166 *cbh = bh;
167 return ret;
Dave Kleikamp470decc2006-10-11 01:20:57 -0700168}
169
Girish Shilamkar818d2762008-01-28 23:58:27 -0500170/*
171 * This function along with journal_submit_commit_record
172 * allows to write the commit record asynchronously.
173 */
Theodore Ts'ofd984962009-01-05 21:34:13 -0500174static int journal_wait_on_commit_record(journal_t *journal,
175 struct buffer_head *bh)
Girish Shilamkar818d2762008-01-28 23:58:27 -0500176{
177 int ret = 0;
178
179 clear_buffer_dirty(bh);
180 wait_on_buffer(bh);
181
182 if (unlikely(!buffer_uptodate(bh)))
183 ret = -EIO;
184 put_bh(bh); /* One for getblk() */
Girish Shilamkar818d2762008-01-28 23:58:27 -0500185
186 return ret;
187}
188
189/*
Aneesh Kumar K.Vcd1aac32008-07-11 19:27:31 -0400190 * write the filemap data using writepage() address_space_operations.
191 * We don't do block allocation here even for delalloc. We don't
192 * use writepages() because with dealyed allocation we may be doing
193 * block allocation in writepages().
194 */
195static int journal_submit_inode_data_buffers(struct address_space *mapping)
196{
197 int ret;
198 struct writeback_control wbc = {
199 .sync_mode = WB_SYNC_ALL,
200 .nr_to_write = mapping->nrpages * 2,
201 .range_start = 0,
202 .range_end = i_size_read(mapping->host),
Aneesh Kumar K.Vcd1aac32008-07-11 19:27:31 -0400203 };
204
205 ret = generic_writepages(mapping, &wbc);
206 return ret;
207}
208
209/*
Jan Karac851ed52008-07-11 19:27:31 -0400210 * Submit all the data buffers of inode associated with the transaction to
211 * disk.
212 *
213 * We are in a committing transaction. Therefore no new inode can be added to
214 * our inode list. We use JI_COMMIT_RUNNING flag to protect inode we currently
215 * operate on from being released while we write out pages.
216 */
Aneesh Kumar K.Vcd1aac32008-07-11 19:27:31 -0400217static int journal_submit_data_buffers(journal_t *journal,
Jan Karac851ed52008-07-11 19:27:31 -0400218 transaction_t *commit_transaction)
219{
220 struct jbd2_inode *jinode;
221 int err, ret = 0;
222 struct address_space *mapping;
223
224 spin_lock(&journal->j_list_lock);
225 list_for_each_entry(jinode, &commit_transaction->t_inode_list, i_list) {
226 mapping = jinode->i_vfs_inode->i_mapping;
Brian King39e3ac22010-10-27 21:25:12 -0400227 set_bit(__JI_COMMIT_RUNNING, &jinode->i_flags);
Jan Karac851ed52008-07-11 19:27:31 -0400228 spin_unlock(&journal->j_list_lock);
Aneesh Kumar K.Vcd1aac32008-07-11 19:27:31 -0400229 /*
230 * submit the inode data buffers. We use writepage
231 * instead of writepages. Because writepages can do
232 * block allocation with delalloc. We need to write
233 * only allocated blocks here.
234 */
Theodore Ts'o879c5e62009-06-17 11:47:48 -0400235 trace_jbd2_submit_inode_data(jinode->i_vfs_inode);
Aneesh Kumar K.Vcd1aac32008-07-11 19:27:31 -0400236 err = journal_submit_inode_data_buffers(mapping);
Jan Karac851ed52008-07-11 19:27:31 -0400237 if (!ret)
238 ret = err;
239 spin_lock(&journal->j_list_lock);
240 J_ASSERT(jinode->i_transaction == commit_transaction);
Brian King39e3ac22010-10-27 21:25:12 -0400241 clear_bit(__JI_COMMIT_RUNNING, &jinode->i_flags);
Peter Zijlstra4e857c52014-03-17 18:06:10 +0100242 smp_mb__after_atomic();
Jan Karac851ed52008-07-11 19:27:31 -0400243 wake_up_bit(&jinode->i_flags, __JI_COMMIT_RUNNING);
244 }
245 spin_unlock(&journal->j_list_lock);
246 return ret;
247}
248
249/*
250 * Wait for data submitted for writeout, refile inodes to proper
251 * transaction if needed.
252 *
253 */
254static int journal_finish_inode_data_buffers(journal_t *journal,
255 transaction_t *commit_transaction)
256{
257 struct jbd2_inode *jinode, *next_i;
258 int err, ret = 0;
259
Aneesh Kumar K.Vcd1aac32008-07-11 19:27:31 -0400260 /* For locking, see the comment in journal_submit_data_buffers() */
Jan Karac851ed52008-07-11 19:27:31 -0400261 spin_lock(&journal->j_list_lock);
262 list_for_each_entry(jinode, &commit_transaction->t_inode_list, i_list) {
Brian King39e3ac22010-10-27 21:25:12 -0400263 set_bit(__JI_COMMIT_RUNNING, &jinode->i_flags);
Jan Karac851ed52008-07-11 19:27:31 -0400264 spin_unlock(&journal->j_list_lock);
265 err = filemap_fdatawait(jinode->i_vfs_inode->i_mapping);
Hidehiro Kawaie9e34f42008-07-31 22:26:04 -0400266 if (err) {
267 /*
268 * Because AS_EIO is cleared by
Christoph Hellwig94004ed2009-09-30 22:16:33 +0200269 * filemap_fdatawait_range(), set it again so
Hidehiro Kawaie9e34f42008-07-31 22:26:04 -0400270 * that user process can get -EIO from fsync().
271 */
272 set_bit(AS_EIO,
273 &jinode->i_vfs_inode->i_mapping->flags);
274
275 if (!ret)
276 ret = err;
277 }
Jan Karac851ed52008-07-11 19:27:31 -0400278 spin_lock(&journal->j_list_lock);
Brian King39e3ac22010-10-27 21:25:12 -0400279 clear_bit(__JI_COMMIT_RUNNING, &jinode->i_flags);
Peter Zijlstra4e857c52014-03-17 18:06:10 +0100280 smp_mb__after_atomic();
Jan Karac851ed52008-07-11 19:27:31 -0400281 wake_up_bit(&jinode->i_flags, __JI_COMMIT_RUNNING);
282 }
283
284 /* Now refile inode to proper lists */
285 list_for_each_entry_safe(jinode, next_i,
286 &commit_transaction->t_inode_list, i_list) {
287 list_del(&jinode->i_list);
288 if (jinode->i_next_transaction) {
289 jinode->i_transaction = jinode->i_next_transaction;
290 jinode->i_next_transaction = NULL;
291 list_add(&jinode->i_list,
292 &jinode->i_transaction->t_inode_list);
293 } else {
294 jinode->i_transaction = NULL;
295 }
296 }
297 spin_unlock(&journal->j_list_lock);
298
299 return ret;
300}
301
Girish Shilamkar818d2762008-01-28 23:58:27 -0500302static __u32 jbd2_checksum_data(__u32 crc32_sum, struct buffer_head *bh)
303{
304 struct page *page = bh->b_page;
305 char *addr;
306 __u32 checksum;
307
Cong Wang303a8f22011-11-25 23:14:31 +0800308 addr = kmap_atomic(page);
Girish Shilamkar818d2762008-01-28 23:58:27 -0500309 checksum = crc32_be(crc32_sum,
310 (void *)(addr + offset_in_page(bh->b_data)), bh->b_size);
Cong Wang303a8f22011-11-25 23:14:31 +0800311 kunmap_atomic(addr);
Girish Shilamkar818d2762008-01-28 23:58:27 -0500312
313 return checksum;
314}
315
Darrick J. Wongdb9ee222014-08-27 18:40:07 -0400316static void write_tag_block(journal_t *j, journal_block_tag_t *tag,
Mingming Cao18eba7a2006-10-11 01:21:13 -0700317 unsigned long long block)
Zach Brownb517bea2006-10-11 01:21:08 -0700318{
319 tag->t_blocknr = cpu_to_be32(block & (u32)~0);
Darrick J. Wongdb9ee222014-08-27 18:40:07 -0400320 if (JBD2_HAS_INCOMPAT_FEATURE(j, JBD2_FEATURE_INCOMPAT_64BIT))
Zach Brownb517bea2006-10-11 01:21:08 -0700321 tag->t_blocknr_high = cpu_to_be32((block >> 31) >> 1);
322}
323
Darrick J. Wong3caa4872012-05-27 08:10:22 -0400324static void jbd2_descr_block_csum_set(journal_t *j,
Jan Karae5a120a2013-06-04 12:06:01 -0400325 struct buffer_head *bh)
Darrick J. Wong3caa4872012-05-27 08:10:22 -0400326{
327 struct jbd2_journal_block_tail *tail;
328 __u32 csum;
329
Darrick J. Wongdb9ee222014-08-27 18:40:07 -0400330 if (!jbd2_journal_has_csum_v2or3(j))
Darrick J. Wong3caa4872012-05-27 08:10:22 -0400331 return;
332
Jan Karae5a120a2013-06-04 12:06:01 -0400333 tail = (struct jbd2_journal_block_tail *)(bh->b_data + j->j_blocksize -
Darrick J. Wong3caa4872012-05-27 08:10:22 -0400334 sizeof(struct jbd2_journal_block_tail));
335 tail->t_checksum = 0;
Jan Karae5a120a2013-06-04 12:06:01 -0400336 csum = jbd2_chksum(j, j->j_csum_seed, bh->b_data, j->j_blocksize);
Darrick J. Wong3caa4872012-05-27 08:10:22 -0400337 tail->t_checksum = cpu_to_be32(csum);
338}
339
Darrick J. Wongc3900872012-05-27 08:12:12 -0400340static void jbd2_block_tag_csum_set(journal_t *j, journal_block_tag_t *tag,
341 struct buffer_head *bh, __u32 sequence)
342{
Darrick J. Wongdb9ee222014-08-27 18:40:07 -0400343 journal_block_tag3_t *tag3 = (journal_block_tag3_t *)tag;
Darrick J. Wongc3900872012-05-27 08:12:12 -0400344 struct page *page = bh->b_page;
345 __u8 *addr;
Darrick J. Wongeee06c52013-05-28 07:31:59 -0400346 __u32 csum32;
Darrick J. Wong18a6ea12013-08-28 14:59:58 -0400347 __be32 seq;
Darrick J. Wongc3900872012-05-27 08:12:12 -0400348
Darrick J. Wongdb9ee222014-08-27 18:40:07 -0400349 if (!jbd2_journal_has_csum_v2or3(j))
Darrick J. Wongc3900872012-05-27 08:12:12 -0400350 return;
351
Darrick J. Wong18a6ea12013-08-28 14:59:58 -0400352 seq = cpu_to_be32(sequence);
Cong Wang906adea2012-06-23 11:24:48 +0800353 addr = kmap_atomic(page);
Darrick J. Wong18a6ea12013-08-28 14:59:58 -0400354 csum32 = jbd2_chksum(j, j->j_csum_seed, (__u8 *)&seq, sizeof(seq));
Darrick J. Wongeee06c52013-05-28 07:31:59 -0400355 csum32 = jbd2_chksum(j, csum32, addr + offset_in_page(bh->b_data),
356 bh->b_size);
Cong Wang906adea2012-06-23 11:24:48 +0800357 kunmap_atomic(addr);
Darrick J. Wongc3900872012-05-27 08:12:12 -0400358
Darrick J. Wongdb9ee222014-08-27 18:40:07 -0400359 if (JBD2_HAS_INCOMPAT_FEATURE(j, JBD2_FEATURE_INCOMPAT_CSUM_V3))
360 tag3->t_checksum = cpu_to_be32(csum32);
361 else
362 tag->t_checksum = cpu_to_be16(csum32);
Darrick J. Wongc3900872012-05-27 08:12:12 -0400363}
Dave Kleikamp470decc2006-10-11 01:20:57 -0700364/*
Mingming Caof7f4bcc2006-10-11 01:20:59 -0700365 * jbd2_journal_commit_transaction
Dave Kleikamp470decc2006-10-11 01:20:57 -0700366 *
367 * The primary function for committing a transaction to the log. This
368 * function is called by the journal thread to begin a complete commit.
369 */
Mingming Caof7f4bcc2006-10-11 01:20:59 -0700370void jbd2_journal_commit_transaction(journal_t *journal)
Dave Kleikamp470decc2006-10-11 01:20:57 -0700371{
Johann Lombardi8e85fb32008-01-28 23:58:27 -0500372 struct transaction_stats_s stats;
Dave Kleikamp470decc2006-10-11 01:20:57 -0700373 transaction_t *commit_transaction;
Jan Karae5a120a2013-06-04 12:06:01 -0400374 struct journal_head *jh;
375 struct buffer_head *descriptor;
Dave Kleikamp470decc2006-10-11 01:20:57 -0700376 struct buffer_head **wbuf = journal->j_wbuf;
377 int bufs;
378 int flags;
379 int err;
Mingming Cao18eba7a2006-10-11 01:21:13 -0700380 unsigned long long blocknr;
Josef Bacike07f7182008-11-26 01:14:26 -0500381 ktime_t start_time;
382 u64 commit_time;
Dave Kleikamp470decc2006-10-11 01:20:57 -0700383 char *tagp = NULL;
384 journal_header_t *header;
385 journal_block_tag_t *tag = NULL;
386 int space_left = 0;
387 int first_tag = 0;
388 int tag_flag;
Dmitry Monakhov794446c2013-04-03 22:06:52 -0400389 int i;
Zach Brownb517bea2006-10-11 01:21:08 -0700390 int tag_bytes = journal_tag_bytes(journal);
Girish Shilamkar818d2762008-01-28 23:58:27 -0500391 struct buffer_head *cbh = NULL; /* For transactional checksums */
392 __u32 crc32_sum = ~0;
Jens Axboe82f04ab2011-03-17 11:01:52 +0100393 struct blk_plug plug;
Jan Kara33395782012-03-13 22:45:38 -0400394 /* Tail of the journal */
395 unsigned long first_block;
396 tid_t first_tid;
397 int update_tail;
Darrick J. Wong3caa4872012-05-27 08:10:22 -0400398 int csum_size = 0;
Jan Karaf5113ef2013-06-04 12:01:45 -0400399 LIST_HEAD(io_bufs);
Jan Karae5a120a2013-06-04 12:06:01 -0400400 LIST_HEAD(log_bufs);
Darrick J. Wong3caa4872012-05-27 08:10:22 -0400401
Darrick J. Wongdb9ee222014-08-27 18:40:07 -0400402 if (jbd2_journal_has_csum_v2or3(journal))
Darrick J. Wong3caa4872012-05-27 08:10:22 -0400403 csum_size = sizeof(struct jbd2_journal_block_tail);
Dave Kleikamp470decc2006-10-11 01:20:57 -0700404
405 /*
406 * First job: lock down the current transaction and wait for
407 * all outstanding updates to complete.
408 */
409
Mingming Caof7f4bcc2006-10-11 01:20:59 -0700410 /* Do we need to erase the effects of a prior jbd2_journal_flush? */
411 if (journal->j_flags & JBD2_FLUSHED) {
Dave Kleikamp470decc2006-10-11 01:20:57 -0700412 jbd_debug(3, "super block updated\n");
Jan Karaa78bb112012-03-13 15:43:04 -0400413 mutex_lock(&journal->j_checkpoint_mutex);
Jan Kara79feb522012-03-13 22:22:54 -0400414 /*
415 * We hold j_checkpoint_mutex so tail cannot change under us.
416 * We don't need any special data guarantees for writing sb
417 * since journal is empty and it is ok for write to be
418 * flushed only with transaction commit.
419 */
420 jbd2_journal_update_sb_log_tail(journal,
421 journal->j_tail_sequence,
422 journal->j_tail,
423 WRITE_SYNC);
Jan Karaa78bb112012-03-13 15:43:04 -0400424 mutex_unlock(&journal->j_checkpoint_mutex);
Dave Kleikamp470decc2006-10-11 01:20:57 -0700425 } else {
426 jbd_debug(3, "superblock not updated\n");
427 }
428
429 J_ASSERT(journal->j_running_transaction != NULL);
430 J_ASSERT(journal->j_committing_transaction == NULL);
431
432 commit_transaction = journal->j_running_transaction;
Dave Kleikamp470decc2006-10-11 01:20:57 -0700433
Theodore Ts'o879c5e62009-06-17 11:47:48 -0400434 trace_jbd2_start_commit(journal, commit_transaction);
Eryu Guanf2a44522011-11-01 19:09:18 -0400435 jbd_debug(1, "JBD2: starting commit of transaction %d\n",
Dave Kleikamp470decc2006-10-11 01:20:57 -0700436 commit_transaction->t_tid);
437
Theodore Ts'oa931da62010-08-03 21:35:12 -0400438 write_lock(&journal->j_state_lock);
Paul Gortmaker3ca841c2013-06-12 22:46:35 -0400439 J_ASSERT(commit_transaction->t_state == T_RUNNING);
Dave Kleikamp470decc2006-10-11 01:20:57 -0700440 commit_transaction->t_state = T_LOCKED;
441
Theodore Ts'o879c5e62009-06-17 11:47:48 -0400442 trace_jbd2_commit_locking(journal, commit_transaction);
Theodore Ts'obf699322009-09-30 00:32:06 -0400443 stats.run.rs_wait = commit_transaction->t_max_wait;
Theodore Ts'o9fff24a2013-02-06 22:30:23 -0500444 stats.run.rs_request_delay = 0;
Theodore Ts'obf699322009-09-30 00:32:06 -0400445 stats.run.rs_locked = jiffies;
Theodore Ts'o9fff24a2013-02-06 22:30:23 -0500446 if (commit_transaction->t_requested)
447 stats.run.rs_request_delay =
448 jbd2_time_diff(commit_transaction->t_requested,
449 stats.run.rs_locked);
Theodore Ts'obf699322009-09-30 00:32:06 -0400450 stats.run.rs_running = jbd2_time_diff(commit_transaction->t_start,
451 stats.run.rs_locked);
Johann Lombardi8e85fb32008-01-28 23:58:27 -0500452
Dave Kleikamp470decc2006-10-11 01:20:57 -0700453 spin_lock(&commit_transaction->t_handle_lock);
Theodore Ts'oa51dca92010-08-02 08:43:25 -0400454 while (atomic_read(&commit_transaction->t_updates)) {
Dave Kleikamp470decc2006-10-11 01:20:57 -0700455 DEFINE_WAIT(wait);
456
457 prepare_to_wait(&journal->j_wait_updates, &wait,
458 TASK_UNINTERRUPTIBLE);
Theodore Ts'oa51dca92010-08-02 08:43:25 -0400459 if (atomic_read(&commit_transaction->t_updates)) {
Dave Kleikamp470decc2006-10-11 01:20:57 -0700460 spin_unlock(&commit_transaction->t_handle_lock);
Theodore Ts'oa931da62010-08-03 21:35:12 -0400461 write_unlock(&journal->j_state_lock);
Dave Kleikamp470decc2006-10-11 01:20:57 -0700462 schedule();
Theodore Ts'oa931da62010-08-03 21:35:12 -0400463 write_lock(&journal->j_state_lock);
Dave Kleikamp470decc2006-10-11 01:20:57 -0700464 spin_lock(&commit_transaction->t_handle_lock);
465 }
466 finish_wait(&journal->j_wait_updates, &wait);
467 }
468 spin_unlock(&commit_transaction->t_handle_lock);
469
Theodore Ts'oa51dca92010-08-02 08:43:25 -0400470 J_ASSERT (atomic_read(&commit_transaction->t_outstanding_credits) <=
Dave Kleikamp470decc2006-10-11 01:20:57 -0700471 journal->j_max_transaction_buffers);
472
473 /*
474 * First thing we are allowed to do is to discard any remaining
475 * BJ_Reserved buffers. Note, it is _not_ permissible to assume
476 * that there are no such buffers: if a large filesystem
477 * operation like a truncate needs to split itself over multiple
Mingming Caof7f4bcc2006-10-11 01:20:59 -0700478 * transactions, then it may try to do a jbd2_journal_restart() while
Dave Kleikamp470decc2006-10-11 01:20:57 -0700479 * there are still BJ_Reserved buffers outstanding. These must
480 * be released cleanly from the current transaction.
481 *
482 * In this case, the filesystem must still reserve write access
483 * again before modifying the buffer in the new transaction, but
484 * we do not require it to remember exactly which old buffers it
485 * has reserved. This is consistent with the existing behaviour
Mingming Caof7f4bcc2006-10-11 01:20:59 -0700486 * that multiple jbd2_journal_get_write_access() calls to the same
Lucas De Marchi25985ed2011-03-30 22:57:33 -0300487 * buffer are perfectly permissible.
Dave Kleikamp470decc2006-10-11 01:20:57 -0700488 */
489 while (commit_transaction->t_reserved_list) {
490 jh = commit_transaction->t_reserved_list;
491 JBUFFER_TRACE(jh, "reserved, unused: refile");
492 /*
Mingming Caof7f4bcc2006-10-11 01:20:59 -0700493 * A jbd2_journal_get_undo_access()+jbd2_journal_release_buffer() may
Dave Kleikamp470decc2006-10-11 01:20:57 -0700494 * leave undo-committed data.
495 */
496 if (jh->b_committed_data) {
497 struct buffer_head *bh = jh2bh(jh);
498
499 jbd_lock_bh_state(bh);
Mingming Caoaf1e76d2007-10-16 18:38:25 -0400500 jbd2_free(jh->b_committed_data, bh->b_size);
Dave Kleikamp470decc2006-10-11 01:20:57 -0700501 jh->b_committed_data = NULL;
502 jbd_unlock_bh_state(bh);
503 }
Mingming Caof7f4bcc2006-10-11 01:20:59 -0700504 jbd2_journal_refile_buffer(journal, jh);
Dave Kleikamp470decc2006-10-11 01:20:57 -0700505 }
506
507 /*
508 * Now try to drop any written-back buffers from the journal's
509 * checkpoint lists. We do this *before* commit because it potentially
510 * frees some memory
511 */
512 spin_lock(&journal->j_list_lock);
Jan Kara841df7df2015-07-28 14:57:14 -0400513 __jbd2_journal_clean_checkpoint_list(journal, false);
Dave Kleikamp470decc2006-10-11 01:20:57 -0700514 spin_unlock(&journal->j_list_lock);
515
Eryu Guanf2a44522011-11-01 19:09:18 -0400516 jbd_debug(3, "JBD2: commit phase 1\n");
Dave Kleikamp470decc2006-10-11 01:20:57 -0700517
518 /*
Yongqiang Yang1ba37262011-12-28 17:46:46 -0500519 * Clear revoked flag to reflect there is no revoked buffers
520 * in the next transaction which is going to be started.
521 */
522 jbd2_clear_buffer_revoked_flags(journal);
523
524 /*
Dave Kleikamp470decc2006-10-11 01:20:57 -0700525 * Switch to a new revoke table.
526 */
Mingming Caof7f4bcc2006-10-11 01:20:59 -0700527 jbd2_journal_switch_revoke_table(journal);
Dave Kleikamp470decc2006-10-11 01:20:57 -0700528
Jan Kara8f7d89f2013-06-04 12:35:11 -0400529 /*
530 * Reserved credits cannot be claimed anymore, free them
531 */
532 atomic_sub(atomic_read(&journal->j_reserved_credits),
533 &commit_transaction->t_outstanding_credits);
534
Theodore Ts'o879c5e62009-06-17 11:47:48 -0400535 trace_jbd2_commit_flushing(journal, commit_transaction);
Theodore Ts'obf699322009-09-30 00:32:06 -0400536 stats.run.rs_flushing = jiffies;
537 stats.run.rs_locked = jbd2_time_diff(stats.run.rs_locked,
538 stats.run.rs_flushing);
Johann Lombardi8e85fb32008-01-28 23:58:27 -0500539
Dave Kleikamp470decc2006-10-11 01:20:57 -0700540 commit_transaction->t_state = T_FLUSH;
541 journal->j_committing_transaction = commit_transaction;
542 journal->j_running_transaction = NULL;
Josef Bacike07f7182008-11-26 01:14:26 -0500543 start_time = ktime_get();
Dave Kleikamp470decc2006-10-11 01:20:57 -0700544 commit_transaction->t_log_start = journal->j_head;
545 wake_up(&journal->j_wait_transaction_locked);
Theodore Ts'oa931da62010-08-03 21:35:12 -0400546 write_unlock(&journal->j_state_lock);
Dave Kleikamp470decc2006-10-11 01:20:57 -0700547
Paul Gortmakercfc7bc82013-06-12 22:56:35 -0400548 jbd_debug(3, "JBD2: commit phase 2a\n");
Dave Kleikamp470decc2006-10-11 01:20:57 -0700549
550 /*
Dave Kleikamp470decc2006-10-11 01:20:57 -0700551 * Now start flushing things to disk, in the order they appear
552 * on the transaction lists. Data blocks go first.
553 */
Aneesh Kumar K.Vcd1aac32008-07-11 19:27:31 -0400554 err = journal_submit_data_buffers(journal, commit_transaction);
Jan Karac851ed52008-07-11 19:27:31 -0400555 if (err)
556 jbd2_journal_abort(journal, err);
Dave Kleikamp470decc2006-10-11 01:20:57 -0700557
Jens Axboe82f04ab2011-03-17 11:01:52 +0100558 blk_start_plug(&plug);
Theodore Ts'o67c457a2009-04-14 07:50:56 -0400559 jbd2_journal_write_revoke_records(journal, commit_transaction,
Jan Karae5a120a2013-06-04 12:06:01 -0400560 &log_bufs, WRITE_SYNC);
Dave Kleikamp470decc2006-10-11 01:20:57 -0700561
Paul Gortmakercfc7bc82013-06-12 22:56:35 -0400562 jbd_debug(3, "JBD2: commit phase 2b\n");
Dave Kleikamp470decc2006-10-11 01:20:57 -0700563
564 /*
Dave Kleikamp470decc2006-10-11 01:20:57 -0700565 * Way to go: we have now written out all of the data for a
566 * transaction! Now comes the tricky part: we need to write out
567 * metadata. Loop over the transaction's entire buffer list:
568 */
Theodore Ts'oa931da62010-08-03 21:35:12 -0400569 write_lock(&journal->j_state_lock);
Dave Kleikamp470decc2006-10-11 01:20:57 -0700570 commit_transaction->t_state = T_COMMIT;
Theodore Ts'oa931da62010-08-03 21:35:12 -0400571 write_unlock(&journal->j_state_lock);
Dave Kleikamp470decc2006-10-11 01:20:57 -0700572
Theodore Ts'o879c5e62009-06-17 11:47:48 -0400573 trace_jbd2_commit_logging(journal, commit_transaction);
Theodore Ts'obf699322009-09-30 00:32:06 -0400574 stats.run.rs_logging = jiffies;
575 stats.run.rs_flushing = jbd2_time_diff(stats.run.rs_flushing,
576 stats.run.rs_logging);
Theodore Ts'oa51dca92010-08-02 08:43:25 -0400577 stats.run.rs_blocks =
578 atomic_read(&commit_transaction->t_outstanding_credits);
Theodore Ts'obf699322009-09-30 00:32:06 -0400579 stats.run.rs_blocks_logged = 0;
Johann Lombardi8e85fb32008-01-28 23:58:27 -0500580
Josef Bacik1dfc3222008-04-17 10:38:59 -0400581 J_ASSERT(commit_transaction->t_nr_buffers <=
Theodore Ts'oa51dca92010-08-02 08:43:25 -0400582 atomic_read(&commit_transaction->t_outstanding_credits));
Josef Bacik1dfc3222008-04-17 10:38:59 -0400583
Jan Kara87c89c22008-07-11 19:27:31 -0400584 err = 0;
Dave Kleikamp470decc2006-10-11 01:20:57 -0700585 bufs = 0;
Jan Karae5a120a2013-06-04 12:06:01 -0400586 descriptor = NULL;
Dave Kleikamp470decc2006-10-11 01:20:57 -0700587 while (commit_transaction->t_buffers) {
588
589 /* Find the next buffer to be journaled... */
590
591 jh = commit_transaction->t_buffers;
592
593 /* If we're in abort mode, we just un-journal the buffer and
Hidehiro Kawai7ad74452008-10-10 20:29:31 -0400594 release it. */
Dave Kleikamp470decc2006-10-11 01:20:57 -0700595
596 if (is_journal_aborted(journal)) {
Hidehiro Kawai7ad74452008-10-10 20:29:31 -0400597 clear_buffer_jbddirty(jh2bh(jh));
Dave Kleikamp470decc2006-10-11 01:20:57 -0700598 JBUFFER_TRACE(jh, "journal is aborting: refile");
Joel Beckere06c8222008-09-11 15:35:47 -0700599 jbd2_buffer_abort_trigger(jh,
600 jh->b_frozen_data ?
601 jh->b_frozen_triggers :
602 jh->b_triggers);
Mingming Caof7f4bcc2006-10-11 01:20:59 -0700603 jbd2_journal_refile_buffer(journal, jh);
Dave Kleikamp470decc2006-10-11 01:20:57 -0700604 /* If that was the last one, we need to clean up
605 * any descriptor buffers which may have been
606 * already allocated, even if we are now
607 * aborting. */
608 if (!commit_transaction->t_buffers)
609 goto start_journal_io;
610 continue;
611 }
612
613 /* Make sure we have a descriptor block in which to
614 record the metadata buffer. */
615
616 if (!descriptor) {
Dave Kleikamp470decc2006-10-11 01:20:57 -0700617 J_ASSERT (bufs == 0);
618
Eryu Guanf2a44522011-11-01 19:09:18 -0400619 jbd_debug(4, "JBD2: get descriptor\n");
Dave Kleikamp470decc2006-10-11 01:20:57 -0700620
Mingming Caof7f4bcc2006-10-11 01:20:59 -0700621 descriptor = jbd2_journal_get_descriptor_buffer(journal);
Dave Kleikamp470decc2006-10-11 01:20:57 -0700622 if (!descriptor) {
Jan Karaa7fa2ba2007-10-16 18:38:25 -0400623 jbd2_journal_abort(journal, -EIO);
Dave Kleikamp470decc2006-10-11 01:20:57 -0700624 continue;
625 }
626
Eryu Guanf2a44522011-11-01 19:09:18 -0400627 jbd_debug(4, "JBD2: got buffer %llu (%p)\n",
Jan Karae5a120a2013-06-04 12:06:01 -0400628 (unsigned long long)descriptor->b_blocknr,
629 descriptor->b_data);
630 header = (journal_header_t *)descriptor->b_data;
Mingming Caof7f4bcc2006-10-11 01:20:59 -0700631 header->h_magic = cpu_to_be32(JBD2_MAGIC_NUMBER);
632 header->h_blocktype = cpu_to_be32(JBD2_DESCRIPTOR_BLOCK);
Dave Kleikamp470decc2006-10-11 01:20:57 -0700633 header->h_sequence = cpu_to_be32(commit_transaction->t_tid);
634
Jan Karae5a120a2013-06-04 12:06:01 -0400635 tagp = &descriptor->b_data[sizeof(journal_header_t)];
636 space_left = descriptor->b_size -
637 sizeof(journal_header_t);
Dave Kleikamp470decc2006-10-11 01:20:57 -0700638 first_tag = 1;
Jan Karae5a120a2013-06-04 12:06:01 -0400639 set_buffer_jwrite(descriptor);
640 set_buffer_dirty(descriptor);
641 wbuf[bufs++] = descriptor;
Dave Kleikamp470decc2006-10-11 01:20:57 -0700642
643 /* Record it so that we can wait for IO
644 completion later */
Jan Karae5a120a2013-06-04 12:06:01 -0400645 BUFFER_TRACE(descriptor, "ph3: file as descriptor");
646 jbd2_file_log_bh(&log_bufs, descriptor);
Dave Kleikamp470decc2006-10-11 01:20:57 -0700647 }
648
649 /* Where is the buffer to be written? */
650
Mingming Caof7f4bcc2006-10-11 01:20:59 -0700651 err = jbd2_journal_next_log_block(journal, &blocknr);
Dave Kleikamp470decc2006-10-11 01:20:57 -0700652 /* If the block mapping failed, just abandon the buffer
653 and repeat this loop: we'll fall into the
654 refile-on-abort condition above. */
655 if (err) {
Jan Karaa7fa2ba2007-10-16 18:38:25 -0400656 jbd2_journal_abort(journal, err);
Dave Kleikamp470decc2006-10-11 01:20:57 -0700657 continue;
658 }
659
660 /*
661 * start_this_handle() uses t_outstanding_credits to determine
662 * the free space in the log, but this counter is changed
Mingming Caof7f4bcc2006-10-11 01:20:59 -0700663 * by jbd2_journal_next_log_block() also.
Dave Kleikamp470decc2006-10-11 01:20:57 -0700664 */
Theodore Ts'oa51dca92010-08-02 08:43:25 -0400665 atomic_dec(&commit_transaction->t_outstanding_credits);
Dave Kleikamp470decc2006-10-11 01:20:57 -0700666
667 /* Bump b_count to prevent truncate from stumbling over
668 the shadowed buffer! @@@ This can go if we ever get
Jan Karaf5113ef2013-06-04 12:01:45 -0400669 rid of the shadow pairing of buffers. */
Dave Kleikamp470decc2006-10-11 01:20:57 -0700670 atomic_inc(&jh2bh(jh)->b_count);
671
Dave Kleikamp470decc2006-10-11 01:20:57 -0700672 /*
Jan Karaf5113ef2013-06-04 12:01:45 -0400673 * Make a temporary IO buffer with which to write it out
674 * (this will requeue the metadata buffer to BJ_Shadow).
Dave Kleikamp470decc2006-10-11 01:20:57 -0700675 */
Jan Karaf5113ef2013-06-04 12:01:45 -0400676 set_bit(BH_JWrite, &jh2bh(jh)->b_state);
Dave Kleikamp470decc2006-10-11 01:20:57 -0700677 JBUFFER_TRACE(jh, "ph3: write metadata");
Mingming Caof7f4bcc2006-10-11 01:20:59 -0700678 flags = jbd2_journal_write_metadata_buffer(commit_transaction,
Jan Karaf5113ef2013-06-04 12:01:45 -0400679 jh, &wbuf[bufs], blocknr);
Theodore Ts'oe6ec1162009-12-01 09:04:42 -0500680 if (flags < 0) {
681 jbd2_journal_abort(journal, flags);
682 continue;
683 }
Jan Karaf5113ef2013-06-04 12:01:45 -0400684 jbd2_file_log_bh(&io_bufs, wbuf[bufs]);
Dave Kleikamp470decc2006-10-11 01:20:57 -0700685
686 /* Record the new block's tag in the current descriptor
687 buffer */
688
689 tag_flag = 0;
690 if (flags & 1)
Mingming Caof7f4bcc2006-10-11 01:20:59 -0700691 tag_flag |= JBD2_FLAG_ESCAPE;
Dave Kleikamp470decc2006-10-11 01:20:57 -0700692 if (!first_tag)
Mingming Caof7f4bcc2006-10-11 01:20:59 -0700693 tag_flag |= JBD2_FLAG_SAME_UUID;
Dave Kleikamp470decc2006-10-11 01:20:57 -0700694
695 tag = (journal_block_tag_t *) tagp;
Darrick J. Wongdb9ee222014-08-27 18:40:07 -0400696 write_tag_block(journal, tag, jh2bh(jh)->b_blocknr);
Darrick J. Wong8f888ef2012-05-22 22:43:41 -0400697 tag->t_flags = cpu_to_be16(tag_flag);
Jan Karaf5113ef2013-06-04 12:01:45 -0400698 jbd2_block_tag_csum_set(journal, tag, wbuf[bufs],
Darrick J. Wongc3900872012-05-27 08:12:12 -0400699 commit_transaction->t_tid);
Zach Brownb517bea2006-10-11 01:21:08 -0700700 tagp += tag_bytes;
701 space_left -= tag_bytes;
Jan Karaf5113ef2013-06-04 12:01:45 -0400702 bufs++;
Dave Kleikamp470decc2006-10-11 01:20:57 -0700703
704 if (first_tag) {
705 memcpy (tagp, journal->j_uuid, 16);
706 tagp += 16;
707 space_left -= 16;
708 first_tag = 0;
709 }
710
711 /* If there's no more to do, or if the descriptor is full,
712 let the IO rip! */
713
714 if (bufs == journal->j_wbufsize ||
715 commit_transaction->t_buffers == NULL ||
Darrick J. Wong3caa4872012-05-27 08:10:22 -0400716 space_left < tag_bytes + 16 + csum_size) {
Dave Kleikamp470decc2006-10-11 01:20:57 -0700717
Eryu Guanf2a44522011-11-01 19:09:18 -0400718 jbd_debug(4, "JBD2: Submit %d IOs\n", bufs);
Dave Kleikamp470decc2006-10-11 01:20:57 -0700719
720 /* Write an end-of-descriptor marker before
721 submitting the IOs. "tag" still points to
722 the last tag we set up. */
723
Darrick J. Wong8f888ef2012-05-22 22:43:41 -0400724 tag->t_flags |= cpu_to_be16(JBD2_FLAG_LAST_TAG);
Dave Kleikamp470decc2006-10-11 01:20:57 -0700725
Darrick J. Wong3caa4872012-05-27 08:10:22 -0400726 jbd2_descr_block_csum_set(journal, descriptor);
Dave Kleikamp470decc2006-10-11 01:20:57 -0700727start_journal_io:
728 for (i = 0; i < bufs; i++) {
729 struct buffer_head *bh = wbuf[i];
Girish Shilamkar818d2762008-01-28 23:58:27 -0500730 /*
731 * Compute checksum.
732 */
733 if (JBD2_HAS_COMPAT_FEATURE(journal,
734 JBD2_FEATURE_COMPAT_CHECKSUM)) {
735 crc32_sum =
736 jbd2_checksum_data(crc32_sum, bh);
737 }
738
Dave Kleikamp470decc2006-10-11 01:20:57 -0700739 lock_buffer(bh);
740 clear_buffer_dirty(bh);
741 set_buffer_uptodate(bh);
742 bh->b_end_io = journal_end_buffer_io_sync;
Jens Axboe82f04ab2011-03-17 11:01:52 +0100743 submit_bh(WRITE_SYNC, bh);
Dave Kleikamp470decc2006-10-11 01:20:57 -0700744 }
745 cond_resched();
Theodore Ts'obf699322009-09-30 00:32:06 -0400746 stats.run.rs_blocks_logged += bufs;
Dave Kleikamp470decc2006-10-11 01:20:57 -0700747
748 /* Force a new descriptor to be generated next
749 time round the loop. */
750 descriptor = NULL;
751 bufs = 0;
752 }
753 }
754
Jan Karac851ed52008-07-11 19:27:31 -0400755 err = journal_finish_inode_data_buffers(journal, commit_transaction);
Hidehiro Kawaie9e34f42008-07-31 22:26:04 -0400756 if (err) {
Hidehiro Kawaie9e34f42008-07-31 22:26:04 -0400757 printk(KERN_WARNING
758 "JBD2: Detected IO errors while flushing file data "
Theodore Ts'o05496762008-09-16 14:36:17 -0400759 "on %s\n", journal->j_devname);
Hidehiro Kawai5bf56832008-10-10 22:12:43 -0400760 if (journal->j_flags & JBD2_ABORT_ON_SYNCDATA_ERR)
761 jbd2_journal_abort(journal, err);
Hidehiro Kawaie9e34f42008-07-31 22:26:04 -0400762 err = 0;
763 }
Jan Karac851ed52008-07-11 19:27:31 -0400764
Jan Kara33395782012-03-13 22:45:38 -0400765 /*
766 * Get current oldest transaction in the log before we issue flush
767 * to the filesystem device. After the flush we can be sure that
768 * blocks of all older transactions are checkpointed to persistent
769 * storage and we will be safe to update journal start in the
770 * superblock with the numbers we get here.
771 */
772 update_tail =
773 jbd2_journal_get_log_tail(journal, &first_tid, &first_block);
774
Jan Karabbd2be32011-05-24 11:59:18 -0400775 write_lock(&journal->j_state_lock);
Jan Kara33395782012-03-13 22:45:38 -0400776 if (update_tail) {
777 long freed = first_block - journal->j_tail;
778
779 if (first_block < journal->j_tail)
780 freed += journal->j_last - journal->j_first;
781 /* Update tail only if we free significant amount of space */
782 if (freed < journal->j_maxlen / 4)
783 update_tail = 0;
784 }
Jan Karabbd2be32011-05-24 11:59:18 -0400785 J_ASSERT(commit_transaction->t_state == T_COMMIT);
786 commit_transaction->t_state = T_COMMIT_DFLUSH;
787 write_unlock(&journal->j_state_lock);
Jan Kara33395782012-03-13 22:45:38 -0400788
Girish Shilamkar818d2762008-01-28 23:58:27 -0500789 /*
790 * If the journal is not located on the file system device,
791 * then we must flush the file system device before we issue
792 * the commit record
793 */
Jan Kara81be12c2011-05-24 11:52:40 -0400794 if (commit_transaction->t_need_data_flush &&
Girish Shilamkar818d2762008-01-28 23:58:27 -0500795 (journal->j_fs_dev != journal->j_dev) &&
796 (journal->j_flags & JBD2_BARRIER))
Shaohua Li99aa7842012-04-13 10:27:35 +0800797 blkdev_issue_flush(journal->j_fs_dev, GFP_NOFS, NULL);
Girish Shilamkar818d2762008-01-28 23:58:27 -0500798
799 /* Done it all: now write the commit record asynchronously. */
800 if (JBD2_HAS_INCOMPAT_FEATURE(journal,
801 JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT)) {
802 err = journal_submit_commit_record(journal, commit_transaction,
Dave Kleikamp470decc2006-10-11 01:20:57 -0700803 &cbh, crc32_sum);
804 if (err)
805 __jbd2_journal_abort_hard(journal);
Dave Kleikamp470decc2006-10-11 01:20:57 -0700806 }
807
Jens Axboe82f04ab2011-03-17 11:01:52 +0100808 blk_finish_plug(&plug);
809
Dave Kleikamp470decc2006-10-11 01:20:57 -0700810 /* Lo and behold: we have just managed to send a transaction to
811 the log. Before we can commit it, wait for the IO so far to
812 complete. Control buffers being written are on the
813 transaction's t_log_list queue, and metadata buffers are on
Jan Karaf5113ef2013-06-04 12:01:45 -0400814 the io_bufs list.
Dave Kleikamp470decc2006-10-11 01:20:57 -0700815
816 Wait for the buffers in reverse order. That way we are
817 less likely to be woken up until all IOs have completed, and
818 so we incur less scheduling load.
819 */
820
Eryu Guanf2a44522011-11-01 19:09:18 -0400821 jbd_debug(3, "JBD2: commit phase 3\n");
Dave Kleikamp470decc2006-10-11 01:20:57 -0700822
Jan Karaf5113ef2013-06-04 12:01:45 -0400823 while (!list_empty(&io_bufs)) {
824 struct buffer_head *bh = list_entry(io_bufs.prev,
825 struct buffer_head,
826 b_assoc_buffers);
Dave Kleikamp470decc2006-10-11 01:20:57 -0700827
Jan Karaf5113ef2013-06-04 12:01:45 -0400828 wait_on_buffer(bh);
829 cond_resched();
Dave Kleikamp470decc2006-10-11 01:20:57 -0700830
831 if (unlikely(!buffer_uptodate(bh)))
832 err = -EIO;
Jan Karaf5113ef2013-06-04 12:01:45 -0400833 jbd2_unfile_log_bh(bh);
Dave Kleikamp470decc2006-10-11 01:20:57 -0700834
835 /*
Jan Karaf5113ef2013-06-04 12:01:45 -0400836 * The list contains temporary buffer heads created by
837 * jbd2_journal_write_metadata_buffer().
Dave Kleikamp470decc2006-10-11 01:20:57 -0700838 */
839 BUFFER_TRACE(bh, "dumping temporary bh");
Dave Kleikamp470decc2006-10-11 01:20:57 -0700840 __brelse(bh);
841 J_ASSERT_BH(bh, atomic_read(&bh->b_count) == 0);
842 free_buffer_head(bh);
843
Jan Karaf5113ef2013-06-04 12:01:45 -0400844 /* We also have to refile the corresponding shadowed buffer */
Dave Kleikamp470decc2006-10-11 01:20:57 -0700845 jh = commit_transaction->t_shadow_list->b_tprev;
846 bh = jh2bh(jh);
Jan Karaf5113ef2013-06-04 12:01:45 -0400847 clear_buffer_jwrite(bh);
Dave Kleikamp470decc2006-10-11 01:20:57 -0700848 J_ASSERT_BH(bh, buffer_jbddirty(bh));
Jan Karab34090e2013-06-04 12:08:56 -0400849 J_ASSERT_BH(bh, !buffer_shadow(bh));
Dave Kleikamp470decc2006-10-11 01:20:57 -0700850
851 /* The metadata is now released for reuse, but we need
852 to remember it against this transaction so that when
853 we finally commit, we can do any checkpointing
854 required. */
855 JBUFFER_TRACE(jh, "file as BJ_Forget");
Mingming Caof7f4bcc2006-10-11 01:20:59 -0700856 jbd2_journal_file_buffer(jh, commit_transaction, BJ_Forget);
Dave Kleikamp470decc2006-10-11 01:20:57 -0700857 JBUFFER_TRACE(jh, "brelse shadowed buffer");
858 __brelse(bh);
859 }
860
861 J_ASSERT (commit_transaction->t_shadow_list == NULL);
862
Eryu Guanf2a44522011-11-01 19:09:18 -0400863 jbd_debug(3, "JBD2: commit phase 4\n");
Dave Kleikamp470decc2006-10-11 01:20:57 -0700864
865 /* Here we wait for the revoke record and descriptor record buffers */
Jan Karae5a120a2013-06-04 12:06:01 -0400866 while (!list_empty(&log_bufs)) {
Dave Kleikamp470decc2006-10-11 01:20:57 -0700867 struct buffer_head *bh;
868
Jan Karae5a120a2013-06-04 12:06:01 -0400869 bh = list_entry(log_bufs.prev, struct buffer_head, b_assoc_buffers);
870 wait_on_buffer(bh);
871 cond_resched();
Dave Kleikamp470decc2006-10-11 01:20:57 -0700872
873 if (unlikely(!buffer_uptodate(bh)))
874 err = -EIO;
875
876 BUFFER_TRACE(bh, "ph5: control buffer writeout done: unfile");
877 clear_buffer_jwrite(bh);
Jan Karae5a120a2013-06-04 12:06:01 -0400878 jbd2_unfile_log_bh(bh);
Dave Kleikamp470decc2006-10-11 01:20:57 -0700879 __brelse(bh); /* One for getblk */
880 /* AKPM: bforget here */
881 }
882
Hidehiro Kawai77e841d2008-10-12 16:39:16 -0400883 if (err)
884 jbd2_journal_abort(journal, err);
885
Eryu Guanf2a44522011-11-01 19:09:18 -0400886 jbd_debug(3, "JBD2: commit phase 5\n");
Jan Karabbd2be32011-05-24 11:59:18 -0400887 write_lock(&journal->j_state_lock);
888 J_ASSERT(commit_transaction->t_state == T_COMMIT_DFLUSH);
889 commit_transaction->t_state = T_COMMIT_JFLUSH;
890 write_unlock(&journal->j_state_lock);
Dave Kleikamp470decc2006-10-11 01:20:57 -0700891
Girish Shilamkar818d2762008-01-28 23:58:27 -0500892 if (!JBD2_HAS_INCOMPAT_FEATURE(journal,
Theodore Ts'o0e3d2a62009-09-11 09:30:12 -0400893 JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT)) {
Girish Shilamkar818d2762008-01-28 23:58:27 -0500894 err = journal_submit_commit_record(journal, commit_transaction,
895 &cbh, crc32_sum);
896 if (err)
897 __jbd2_journal_abort_hard(journal);
898 }
Zhang Huan6cba6112011-04-05 19:16:20 -0400899 if (cbh)
Theodore Ts'ofd984962009-01-05 21:34:13 -0500900 err = journal_wait_on_commit_record(journal, cbh);
Jan Karaf73bee42010-08-18 15:56:56 +0200901 if (JBD2_HAS_INCOMPAT_FEATURE(journal,
902 JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT) &&
903 journal->j_flags & JBD2_BARRIER) {
Shaohua Li99aa7842012-04-13 10:27:35 +0800904 blkdev_issue_flush(journal->j_dev, GFP_NOFS, NULL);
Jan Karaf73bee42010-08-18 15:56:56 +0200905 }
Dave Kleikamp470decc2006-10-11 01:20:57 -0700906
907 if (err)
Jan Karaa7fa2ba2007-10-16 18:38:25 -0400908 jbd2_journal_abort(journal, err);
Dave Kleikamp470decc2006-10-11 01:20:57 -0700909
Jan Kara33395782012-03-13 22:45:38 -0400910 /*
911 * Now disk caches for filesystem device are flushed so we are safe to
912 * erase checkpointed transactions from the log by updating journal
913 * superblock.
914 */
915 if (update_tail)
916 jbd2_update_log_tail(journal, first_tid, first_block);
917
Dave Kleikamp470decc2006-10-11 01:20:57 -0700918 /* End of a transaction! Finally, we can do checkpoint
919 processing: any buffers committed as a result of this
920 transaction can be removed from any checkpoint list it was on
921 before. */
922
Eryu Guanf2a44522011-11-01 19:09:18 -0400923 jbd_debug(3, "JBD2: commit phase 6\n");
Dave Kleikamp470decc2006-10-11 01:20:57 -0700924
Jan Karac851ed52008-07-11 19:27:31 -0400925 J_ASSERT(list_empty(&commit_transaction->t_inode_list));
Dave Kleikamp470decc2006-10-11 01:20:57 -0700926 J_ASSERT(commit_transaction->t_buffers == NULL);
927 J_ASSERT(commit_transaction->t_checkpoint_list == NULL);
Dave Kleikamp470decc2006-10-11 01:20:57 -0700928 J_ASSERT(commit_transaction->t_shadow_list == NULL);
Dave Kleikamp470decc2006-10-11 01:20:57 -0700929
930restart_loop:
931 /*
932 * As there are other places (journal_unmap_buffer()) adding buffers
933 * to this list we have to be careful and hold the j_list_lock.
934 */
935 spin_lock(&journal->j_list_lock);
936 while (commit_transaction->t_forget) {
937 transaction_t *cp_transaction;
938 struct buffer_head *bh;
Jan Karade1b7942011-06-13 15:38:22 -0400939 int try_to_free = 0;
Dave Kleikamp470decc2006-10-11 01:20:57 -0700940
941 jh = commit_transaction->t_forget;
942 spin_unlock(&journal->j_list_lock);
943 bh = jh2bh(jh);
Jan Karade1b7942011-06-13 15:38:22 -0400944 /*
945 * Get a reference so that bh cannot be freed before we are
946 * done with it.
947 */
948 get_bh(bh);
Dave Kleikamp470decc2006-10-11 01:20:57 -0700949 jbd_lock_bh_state(bh);
dingdinghua23e2af32010-02-24 12:11:20 -0500950 J_ASSERT_JH(jh, jh->b_transaction == commit_transaction);
Dave Kleikamp470decc2006-10-11 01:20:57 -0700951
952 /*
953 * If there is undo-protected committed data against
954 * this buffer, then we can remove it now. If it is a
955 * buffer needing such protection, the old frozen_data
956 * field now points to a committed version of the
957 * buffer, so rotate that field to the new committed
958 * data.
959 *
960 * Otherwise, we can just throw away the frozen data now.
Joel Beckere06c8222008-09-11 15:35:47 -0700961 *
962 * We also know that the frozen data has already fired
963 * its triggers if they exist, so we can clear that too.
Dave Kleikamp470decc2006-10-11 01:20:57 -0700964 */
965 if (jh->b_committed_data) {
Mingming Caoaf1e76d2007-10-16 18:38:25 -0400966 jbd2_free(jh->b_committed_data, bh->b_size);
Dave Kleikamp470decc2006-10-11 01:20:57 -0700967 jh->b_committed_data = NULL;
968 if (jh->b_frozen_data) {
969 jh->b_committed_data = jh->b_frozen_data;
970 jh->b_frozen_data = NULL;
Joel Beckere06c8222008-09-11 15:35:47 -0700971 jh->b_frozen_triggers = NULL;
Dave Kleikamp470decc2006-10-11 01:20:57 -0700972 }
973 } else if (jh->b_frozen_data) {
Mingming Caoaf1e76d2007-10-16 18:38:25 -0400974 jbd2_free(jh->b_frozen_data, bh->b_size);
Dave Kleikamp470decc2006-10-11 01:20:57 -0700975 jh->b_frozen_data = NULL;
Joel Beckere06c8222008-09-11 15:35:47 -0700976 jh->b_frozen_triggers = NULL;
Dave Kleikamp470decc2006-10-11 01:20:57 -0700977 }
978
979 spin_lock(&journal->j_list_lock);
980 cp_transaction = jh->b_cp_transaction;
981 if (cp_transaction) {
982 JBUFFER_TRACE(jh, "remove from old cp transaction");
Johann Lombardi8e85fb32008-01-28 23:58:27 -0500983 cp_transaction->t_chp_stats.cs_dropped++;
Mingming Caof7f4bcc2006-10-11 01:20:59 -0700984 __jbd2_journal_remove_checkpoint(jh);
Dave Kleikamp470decc2006-10-11 01:20:57 -0700985 }
986
987 /* Only re-checkpoint the buffer_head if it is marked
988 * dirty. If the buffer was added to the BJ_Forget list
Mingming Caof7f4bcc2006-10-11 01:20:59 -0700989 * by jbd2_journal_forget, it may no longer be dirty and
Dave Kleikamp470decc2006-10-11 01:20:57 -0700990 * there's no point in keeping a checkpoint record for
991 * it. */
992
Jan Karab794e7a2012-09-26 23:11:13 -0400993 /*
994 * A buffer which has been freed while still being journaled by
995 * a previous transaction.
996 */
997 if (buffer_freed(bh)) {
998 /*
999 * If the running transaction is the one containing
1000 * "add to orphan" operation (b_next_transaction !=
1001 * NULL), we have to wait for that transaction to
1002 * commit before we can really get rid of the buffer.
1003 * So just clear b_modified to not confuse transaction
1004 * credit accounting and refile the buffer to
1005 * BJ_Forget of the running transaction. If the just
1006 * committed transaction contains "add to orphan"
1007 * operation, we can completely invalidate the buffer
1008 * now. We are rather through in that since the
1009 * buffer may be still accessible when blocksize <
1010 * pagesize and it is attached to the last partial
1011 * page.
1012 */
1013 jh->b_modified = 0;
1014 if (!jh->b_next_transaction) {
1015 clear_buffer_freed(bh);
1016 clear_buffer_jbddirty(bh);
1017 clear_buffer_mapped(bh);
1018 clear_buffer_new(bh);
1019 clear_buffer_req(bh);
1020 bh->b_bdev = NULL;
1021 }
Dave Kleikamp470decc2006-10-11 01:20:57 -07001022 }
1023
1024 if (buffer_jbddirty(bh)) {
1025 JBUFFER_TRACE(jh, "add to new checkpointing trans");
Mingming Caof7f4bcc2006-10-11 01:20:59 -07001026 __jbd2_journal_insert_checkpoint(jh, commit_transaction);
Hidehiro Kawai7ad74452008-10-10 20:29:31 -04001027 if (is_journal_aborted(journal))
1028 clear_buffer_jbddirty(bh);
Dave Kleikamp470decc2006-10-11 01:20:57 -07001029 } else {
1030 J_ASSERT_BH(bh, !buffer_dirty(bh));
Jan Karade1b7942011-06-13 15:38:22 -04001031 /*
1032 * The buffer on BJ_Forget list and not jbddirty means
Dave Kleikamp470decc2006-10-11 01:20:57 -07001033 * it has been freed by this transaction and hence it
1034 * could not have been reallocated until this
1035 * transaction has committed. *BUT* it could be
1036 * reallocated once we have written all the data to
1037 * disk and before we process the buffer on BJ_Forget
Jan Karade1b7942011-06-13 15:38:22 -04001038 * list.
1039 */
1040 if (!jh->b_next_transaction)
1041 try_to_free = 1;
Dave Kleikamp470decc2006-10-11 01:20:57 -07001042 }
Jan Karade1b7942011-06-13 15:38:22 -04001043 JBUFFER_TRACE(jh, "refile or unfile buffer");
1044 __jbd2_journal_refile_buffer(jh);
1045 jbd_unlock_bh_state(bh);
1046 if (try_to_free)
1047 release_buffer_page(bh); /* Drops bh reference */
1048 else
1049 __brelse(bh);
Dave Kleikamp470decc2006-10-11 01:20:57 -07001050 cond_resched_lock(&journal->j_list_lock);
1051 }
1052 spin_unlock(&journal->j_list_lock);
1053 /*
Jan Karaf5a7a6b2008-01-28 23:58:27 -05001054 * This is a bit sleazy. We use j_list_lock to protect transition
1055 * of a transaction into T_FINISHED state and calling
1056 * __jbd2_journal_drop_transaction(). Otherwise we could race with
1057 * other checkpointing code processing the transaction...
Dave Kleikamp470decc2006-10-11 01:20:57 -07001058 */
Theodore Ts'oa931da62010-08-03 21:35:12 -04001059 write_lock(&journal->j_state_lock);
Dave Kleikamp470decc2006-10-11 01:20:57 -07001060 spin_lock(&journal->j_list_lock);
1061 /*
1062 * Now recheck if some buffers did not get attached to the transaction
1063 * while the lock was dropped...
1064 */
1065 if (commit_transaction->t_forget) {
1066 spin_unlock(&journal->j_list_lock);
Theodore Ts'oa931da62010-08-03 21:35:12 -04001067 write_unlock(&journal->j_state_lock);
Dave Kleikamp470decc2006-10-11 01:20:57 -07001068 goto restart_loop;
1069 }
1070
Theodore Ts'od4e839d2014-03-08 22:34:10 -05001071 /* Add the transaction to the checkpoint list
1072 * __journal_remove_checkpoint() can not destroy transaction
1073 * under us because it is not marked as T_FINISHED yet */
1074 if (journal->j_checkpoint_transactions == NULL) {
1075 journal->j_checkpoint_transactions = commit_transaction;
1076 commit_transaction->t_cpnext = commit_transaction;
1077 commit_transaction->t_cpprev = commit_transaction;
1078 } else {
1079 commit_transaction->t_cpnext =
1080 journal->j_checkpoint_transactions;
1081 commit_transaction->t_cpprev =
1082 commit_transaction->t_cpnext->t_cpprev;
1083 commit_transaction->t_cpnext->t_cpprev =
1084 commit_transaction;
1085 commit_transaction->t_cpprev->t_cpnext =
1086 commit_transaction;
1087 }
1088 spin_unlock(&journal->j_list_lock);
1089
Dave Kleikamp470decc2006-10-11 01:20:57 -07001090 /* Done with this transaction! */
1091
Eryu Guanf2a44522011-11-01 19:09:18 -04001092 jbd_debug(3, "JBD2: commit phase 7\n");
Dave Kleikamp470decc2006-10-11 01:20:57 -07001093
Jan Karabbd2be32011-05-24 11:59:18 -04001094 J_ASSERT(commit_transaction->t_state == T_COMMIT_JFLUSH);
Dave Kleikamp470decc2006-10-11 01:20:57 -07001095
Johann Lombardi8e85fb32008-01-28 23:58:27 -05001096 commit_transaction->t_start = jiffies;
Theodore Ts'obf699322009-09-30 00:32:06 -04001097 stats.run.rs_logging = jbd2_time_diff(stats.run.rs_logging,
1098 commit_transaction->t_start);
Johann Lombardi8e85fb32008-01-28 23:58:27 -05001099
1100 /*
Theodore Ts'obf699322009-09-30 00:32:06 -04001101 * File the transaction statistics
Johann Lombardi8e85fb32008-01-28 23:58:27 -05001102 */
Johann Lombardi8e85fb32008-01-28 23:58:27 -05001103 stats.ts_tid = commit_transaction->t_tid;
Theodore Ts'o8dd42042010-08-03 21:38:29 -04001104 stats.run.rs_handle_count =
1105 atomic_read(&commit_transaction->t_handle_count);
Theodore Ts'obf699322009-09-30 00:32:06 -04001106 trace_jbd2_run_stats(journal->j_fs_dev->bd_dev,
1107 commit_transaction->t_tid, &stats.run);
Theodore Ts'o42cf3452014-03-08 19:51:16 -05001108 stats.ts_requested = (commit_transaction->t_requested) ? 1 : 0;
Johann Lombardi8e85fb32008-01-28 23:58:27 -05001109
Dmitry Monakhov794446c2013-04-03 22:06:52 -04001110 commit_transaction->t_state = T_COMMIT_CALLBACK;
Dave Kleikamp470decc2006-10-11 01:20:57 -07001111 J_ASSERT(commit_transaction == journal->j_committing_transaction);
1112 journal->j_commit_sequence = commit_transaction->t_tid;
1113 journal->j_committing_transaction = NULL;
Josef Bacike07f7182008-11-26 01:14:26 -05001114 commit_time = ktime_to_ns(ktime_sub(ktime_get(), start_time));
Dave Kleikamp470decc2006-10-11 01:20:57 -07001115
Josef Bacike07f7182008-11-26 01:14:26 -05001116 /*
1117 * weight the commit time higher than the average time so we don't
1118 * react too strongly to vast changes in the commit time
1119 */
1120 if (likely(journal->j_average_commit_time))
1121 journal->j_average_commit_time = (commit_time +
1122 journal->j_average_commit_time*3) / 4;
1123 else
1124 journal->j_average_commit_time = commit_time;
Dmitry Monakhov794446c2013-04-03 22:06:52 -04001125
Theodore Ts'oa931da62010-08-03 21:35:12 -04001126 write_unlock(&journal->j_state_lock);
Theodore Ts'o6c20ec82008-10-28 21:08:20 -04001127
Aneesh Kumar K.Vfb684072008-11-06 17:50:21 -05001128 if (journal->j_commit_callback)
1129 journal->j_commit_callback(journal, commit_transaction);
1130
Theodore Ts'o879c5e62009-06-17 11:47:48 -04001131 trace_jbd2_end_commit(journal, commit_transaction);
Eryu Guanf2a44522011-11-01 19:09:18 -04001132 jbd_debug(1, "JBD2: commit %d complete, head %d\n",
Dave Kleikamp470decc2006-10-11 01:20:57 -07001133 journal->j_commit_sequence, journal->j_tail_sequence);
Dave Kleikamp470decc2006-10-11 01:20:57 -07001134
Dmitry Monakhov794446c2013-04-03 22:06:52 -04001135 write_lock(&journal->j_state_lock);
1136 spin_lock(&journal->j_list_lock);
1137 commit_transaction->t_state = T_FINISHED;
Theodore Ts'od4e839d2014-03-08 22:34:10 -05001138 /* Check if the transaction can be dropped now that we are finished */
Dmitry Monakhov794446c2013-04-03 22:06:52 -04001139 if (commit_transaction->t_checkpoint_list == NULL &&
1140 commit_transaction->t_checkpoint_io_list == NULL) {
1141 __jbd2_journal_drop_transaction(journal, commit_transaction);
1142 jbd2_journal_free_transaction(commit_transaction);
1143 }
1144 spin_unlock(&journal->j_list_lock);
1145 write_unlock(&journal->j_state_lock);
Dave Kleikamp470decc2006-10-11 01:20:57 -07001146 wake_up(&journal->j_wait_done_commit);
Theodore Ts'o42cf3452014-03-08 19:51:16 -05001147
1148 /*
1149 * Calculate overall stats
1150 */
1151 spin_lock(&journal->j_history_lock);
1152 journal->j_stats.ts_tid++;
1153 journal->j_stats.ts_requested += stats.ts_requested;
1154 journal->j_stats.run.rs_wait += stats.run.rs_wait;
1155 journal->j_stats.run.rs_request_delay += stats.run.rs_request_delay;
1156 journal->j_stats.run.rs_running += stats.run.rs_running;
1157 journal->j_stats.run.rs_locked += stats.run.rs_locked;
1158 journal->j_stats.run.rs_flushing += stats.run.rs_flushing;
1159 journal->j_stats.run.rs_logging += stats.run.rs_logging;
1160 journal->j_stats.run.rs_handle_count += stats.run.rs_handle_count;
1161 journal->j_stats.run.rs_blocks += stats.run.rs_blocks;
1162 journal->j_stats.run.rs_blocks_logged += stats.run.rs_blocks_logged;
1163 spin_unlock(&journal->j_history_lock);
Dave Kleikamp470decc2006-10-11 01:20:57 -07001164}