diff options
Diffstat (limited to 'fs/ocfs2/file.c')
| -rw-r--r-- | fs/ocfs2/file.c | 26 |
1 files changed, 25 insertions, 1 deletions
diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c index f92fe91ff260..bbac7cd33e0b 100644 --- a/fs/ocfs2/file.c +++ b/fs/ocfs2/file.c @@ -1891,9 +1891,11 @@ static ssize_t ocfs2_file_aio_write(struct kiocb *iocb, ssize_t written = 0; size_t ocount; /* original count */ size_t count; /* after file limit checks */ - loff_t *ppos = &iocb->ki_pos; + loff_t old_size, *ppos = &iocb->ki_pos; + u32 old_clusters; struct file *file = iocb->ki_filp; struct inode *inode = file->f_path.dentry->d_inode; + struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); mlog_entry("(0x%p, %u, '%.*s')\n", file, (unsigned int)nr_segs, @@ -1949,6 +1951,13 @@ relock: goto relock; } + /* + * To later detect whether a journal commit for sync writes is + * necessary, we sample i_size, and cluster count here. + */ + old_size = i_size_read(inode); + old_clusters = OCFS2_I(inode)->ip_clusters; + /* communicate with ocfs2_dio_end_io */ ocfs2_iocb_set_rw_locked(iocb, rw_level); @@ -1978,6 +1987,21 @@ out_dio: /* buffered aio wouldn't have proper lock coverage today */ BUG_ON(ret == -EIOCBQUEUED && !(file->f_flags & O_DIRECT)); + if ((file->f_flags & O_SYNC && !direct_io) || IS_SYNC(inode)) { + /* + * The generic write paths have handled getting data + * to disk, but since we don't make use of the dirty + * inode list, a manual journal commit is necessary + * here. + */ + if (old_size != i_size_read(inode) || + old_clusters != OCFS2_I(inode)->ip_clusters) { + ret = journal_force_commit(osb->journal->j_journal); + if (ret < 0) + written = ret; + } + } + /* * deep in g_f_a_w_n()->ocfs2_direct_IO we pass in a ocfs2_dio_end_io * function pointer which is called when o_direct io completes so that |