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ext4: fold ext4_sync_fs_nojournal() into ext4_sync_fs() 

This allows us to eliminate duplicate code, and eventually allow us to
also fold ext4_sops and ext4_nojournal_sops together.

Signed-off-by: Theodore Ts'o <tytso@mit.edu>
This commit is contained in:
Theodore Ts'o 2014-09-18 16:12:37 -04:00
parent 279bf6d390
commit bda3253043
1 changed files with 13 additions and 23 deletions
fs/ext4
super.c

36
fs/ext4/super.c
View File

@ -70,7 +70,6 @@ static void ext4_mark_recovery_complete(struct super_block *sb,
static void ext4_clear_journal_err(struct super_block *sb, static void ext4_clear_journal_err(struct super_block *sb,
struct ext4_super_block *es); struct ext4_super_block *es);
static int ext4_sync_fs(struct super_block *sb, int wait); static int ext4_sync_fs(struct super_block *sb, int wait);
static int ext4_sync_fs_nojournal(struct super_block *sb, int wait);
static int ext4_remount(struct super_block *sb, int *flags, char *data); static int ext4_remount(struct super_block *sb, int *flags, char *data);
static int ext4_statfs(struct dentry *dentry, struct kstatfs *buf); static int ext4_statfs(struct dentry *dentry, struct kstatfs *buf);
static int ext4_unfreeze(struct super_block *sb); static int ext4_unfreeze(struct super_block *sb);
@ -1131,7 +1130,7 @@ static const struct super_operations ext4_nojournal_sops = {
.dirty_inode = ext4_dirty_inode, .dirty_inode = ext4_dirty_inode,
.drop_inode = ext4_drop_inode, .drop_inode = ext4_drop_inode,
.evict_inode = ext4_evict_inode, .evict_inode = ext4_evict_inode,
.sync_fs = ext4_sync_fs_nojournal, .sync_fs = ext4_sync_fs,
.put_super = ext4_put_super, .put_super = ext4_put_super,
.statfs = ext4_statfs, .statfs = ext4_statfs,
.remount_fs = ext4_remount, .remount_fs = ext4_remount,
@ -4718,15 +4717,19 @@ static int ext4_sync_fs(struct super_block *sb, int wait)
* being sent at the end of the function. But we can skip it if * being sent at the end of the function. But we can skip it if
* transaction_commit will do it for us. * transaction_commit will do it for us.
*/ */
target = jbd2_get_latest_transaction(sbi->s_journal); if (sbi->s_journal) {
if (wait && sbi->s_journal->j_flags & JBD2_BARRIER && target = jbd2_get_latest_transaction(sbi->s_journal);
!jbd2_trans_will_send_data_barrier(sbi->s_journal, target)) if (wait && sbi->s_journal->j_flags & JBD2_BARRIER &&
needs_barrier = true; !jbd2_trans_will_send_data_barrier(sbi->s_journal, target))
needs_barrier = true;
if (jbd2_journal_start_commit(sbi->s_journal, &target)) { if (jbd2_journal_start_commit(sbi->s_journal, &target)) {
if (wait) if (wait)
ret = jbd2_log_wait_commit(sbi->s_journal, target); ret = jbd2_log_wait_commit(sbi->s_journal,
} target);
}
} else if (wait && test_opt(sb, BARRIER))
needs_barrier = true;
if (needs_barrier) { if (needs_barrier) {
int err; int err;
err = blkdev_issue_flush(sb->s_bdev, GFP_KERNEL, NULL); err = blkdev_issue_flush(sb->s_bdev, GFP_KERNEL, NULL);
@ -4737,19 +4740,6 @@ static int ext4_sync_fs(struct super_block *sb, int wait)
return ret; return ret;
} }
static int ext4_sync_fs_nojournal(struct super_block *sb, int wait)
{
int ret = 0;
trace_ext4_sync_fs(sb, wait);
flush_workqueue(EXT4_SB(sb)->rsv_conversion_wq);
dquot_writeback_dquots(sb, -1);
if (wait && test_opt(sb, BARRIER))
ret = blkdev_issue_flush(sb->s_bdev, GFP_KERNEL, NULL);
return ret;
}
/* /*
* LVM calls this function before a (read-only) snapshot is created. This * LVM calls this function before a (read-only) snapshot is created. This
* gives us a chance to flush the journal completely and mark the fs clean. * gives us a chance to flush the journal completely and mark the fs clean.