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authorJan Kara <jack@suse.cz>2017-05-04 18:01:31 +0300
committerTheodore Ts'o <tytso@mit.edu>2017-05-04 18:01:31 +0300
commit17f423b5160767a8ec43b0602767e5f4d3ecd083 (patch)
tree0442ac59b98b6b123f4898f31c3c7824b1f0eb18
parent00473374b72a6e5aba01af083f0d5100f3151210 (diff)
downloadlinux-17f423b5160767a8ec43b0602767e5f4d3ecd083.tar.xz
jbd2: cleanup write flags handling from jbd2_write_superblock()
Currently jbd2_write_superblock() silently adds REQ_SYNC to flags with which journal superblock is written. Make this explicit by making flags passed down to jbd2_write_superblock() contain REQ_SYNC. CC: linux-ext4@vger.kernel.org Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Theodore Ts'o <tytso@mit.edu>
-rw-r--r--fs/jbd2/journal.c15
1 files changed, 8 insertions, 7 deletions
diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c
index f1906fa54321..1ce13479b10d 100644
--- a/fs/jbd2/journal.c
+++ b/fs/jbd2/journal.c
@@ -926,7 +926,8 @@ int __jbd2_update_log_tail(journal_t *journal, tid_t tid, unsigned long block)
* space and if we lose sb update during power failure we'd replay
* old transaction with possibly newly overwritten data.
*/
- ret = jbd2_journal_update_sb_log_tail(journal, tid, block, REQ_FUA);
+ ret = jbd2_journal_update_sb_log_tail(journal, tid, block,
+ REQ_SYNC | REQ_FUA);
if (ret)
goto out;
@@ -1327,7 +1328,7 @@ static int journal_reset(journal_t *journal)
jbd2_journal_update_sb_log_tail(journal,
journal->j_tail_sequence,
journal->j_tail,
- REQ_FUA);
+ REQ_SYNC | REQ_FUA);
mutex_unlock(&journal->j_checkpoint_mutex);
}
return jbd2_journal_start_thread(journal);
@@ -1361,7 +1362,7 @@ static int jbd2_write_superblock(journal_t *journal, int write_flags)
jbd2_superblock_csum_set(journal, sb);
get_bh(bh);
bh->b_end_io = end_buffer_write_sync;
- ret = submit_bh(REQ_OP_WRITE, write_flags | REQ_SYNC, bh);
+ ret = submit_bh(REQ_OP_WRITE, write_flags, bh);
wait_on_buffer(bh);
if (buffer_write_io_error(bh)) {
clear_buffer_write_io_error(bh);
@@ -1467,7 +1468,7 @@ void jbd2_journal_update_sb_errno(journal_t *journal)
sb->s_errno = cpu_to_be32(journal->j_errno);
read_unlock(&journal->j_state_lock);
- jbd2_write_superblock(journal, REQ_FUA);
+ jbd2_write_superblock(journal, REQ_SYNC | REQ_FUA);
}
EXPORT_SYMBOL(jbd2_journal_update_sb_errno);
@@ -1734,7 +1735,7 @@ int jbd2_journal_destroy(journal_t *journal)
write_unlock(&journal->j_state_lock);
jbd2_mark_journal_empty(journal,
- REQ_PREFLUSH | REQ_FUA);
+ REQ_SYNC | REQ_PREFLUSH | REQ_FUA);
mutex_unlock(&journal->j_checkpoint_mutex);
} else
err = -EIO;
@@ -1993,7 +1994,7 @@ int jbd2_journal_flush(journal_t *journal)
* the magic code for a fully-recovered superblock. Any future
* commits of data to the journal will restore the current
* s_start value. */
- jbd2_mark_journal_empty(journal, REQ_FUA);
+ jbd2_mark_journal_empty(journal, REQ_SYNC | REQ_FUA);
mutex_unlock(&journal->j_checkpoint_mutex);
write_lock(&journal->j_state_lock);
J_ASSERT(!journal->j_running_transaction);
@@ -2039,7 +2040,7 @@ int jbd2_journal_wipe(journal_t *journal, int write)
if (write) {
/* Lock to make assertions happy... */
mutex_lock(&journal->j_checkpoint_mutex);
- jbd2_mark_journal_empty(journal, REQ_FUA);
+ jbd2_mark_journal_empty(journal, REQ_SYNC | REQ_FUA);
mutex_unlock(&journal->j_checkpoint_mutex);
}