diff options
| -rw-r--r-- | fs/ext4/fsync.c | 47 |
1 files changed, 11 insertions, 36 deletions
diff --git a/fs/ext4/fsync.c b/fs/ext4/fsync.c index dcc881b30849..6019bd449576 100644 --- a/fs/ext4/fsync.c +++ b/fs/ext4/fsync.c @@ -73,32 +73,6 @@ static int ext4_sync_parent(struct inode *inode) return ret; } -/** - * __sync_file - generic_file_fsync without the locking and filemap_write - * @inode: inode to sync - * @datasync: only sync essential metadata if true - * - * This is just generic_file_fsync without the locking. This is needed for - * nojournal mode to make sure this inodes data/metadata makes it to disk - * properly. The i_mutex should be held already. - */ -static int __sync_inode(struct inode *inode, int datasync) -{ - int err; - int ret; - - ret = sync_mapping_buffers(inode->i_mapping); - if (!(inode->i_state & I_DIRTY)) - return ret; - if (datasync && !(inode->i_state & I_DIRTY_DATASYNC)) - return ret; - - err = sync_inode_metadata(inode, 1); - if (ret == 0) - ret = err; - return ret; -} - /* * akpm: A new design for ext4_sync_file(). * @@ -116,7 +90,7 @@ int ext4_sync_file(struct file *file, loff_t start, loff_t end, int datasync) struct inode *inode = file->f_mapping->host; struct ext4_inode_info *ei = EXT4_I(inode); journal_t *journal = EXT4_SB(inode->i_sb)->s_journal; - int ret, err; + int ret = 0, err; tid_t commit_tid; bool needs_barrier = false; @@ -124,21 +98,21 @@ int ext4_sync_file(struct file *file, loff_t start, loff_t end, int datasync) trace_ext4_sync_file_enter(file, datasync); - ret = filemap_write_and_wait_range(inode->i_mapping, start, end); - if (ret) - return ret; - mutex_lock(&inode->i_mutex); - if (inode->i_sb->s_flags & MS_RDONLY) - goto out; + goto out_trace; if (!journal) { - ret = __sync_inode(inode, datasync); + ret = generic_file_fsync(file, start, end, datasync); if (!ret && !hlist_empty(&inode->i_dentry)) ret = ext4_sync_parent(inode); - goto out; + goto out_trace; } + ret = filemap_write_and_wait_range(inode->i_mapping, start, end); + if (ret) + return ret; + mutex_lock(&inode->i_mutex); + /* * data=writeback,ordered: * The caller's filemap_fdatawrite()/wait will sync the data. @@ -168,8 +142,9 @@ int ext4_sync_file(struct file *file, loff_t start, loff_t end, int datasync) if (!ret) ret = err; } - out: +out: mutex_unlock(&inode->i_mutex); +out_trace: trace_ext4_sync_file_exit(inode, ret); return ret; } |