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-rw-r--r--fs/ocfs2/file.c35
1 files changed, 22 insertions, 13 deletions
diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c
index 3d30a1c..558ce03 100644
--- a/fs/ocfs2/file.c
+++ b/fs/ocfs2/file.c
@@ -749,7 +749,7 @@ static int ocfs2_write_zero_page(struct inode *inode,
int ret;
offset = (size & (PAGE_CACHE_SIZE-1)); /* Within page */
- /* ugh. in prepare/commit_write, if from==to==start of block, we
+ /* ugh. in prepare/commit_write, if from==to==start of block, we
** skip the prepare. make sure we never send an offset for the start
** of a block
*/
@@ -1772,13 +1772,14 @@ static int ocfs2_prepare_inode_for_write(struct dentry *dentry,
loff_t *ppos,
size_t count,
int appending,
- int *direct_io)
+ int *direct_io,
+ int *has_refcount)
{
int ret = 0, meta_level = 0;
struct inode *inode = dentry->d_inode;
loff_t saved_pos, end;
- /*
+ /*
* We start with a read level meta lock and only jump to an ex
* if we need to make modifications here.
*/
@@ -1833,6 +1834,8 @@ static int ocfs2_prepare_inode_for_write(struct dentry *dentry,
saved_pos,
count,
&meta_level);
+ if (has_refcount)
+ *has_refcount = 1;
}
if (ret < 0) {
@@ -1856,6 +1859,10 @@ static int ocfs2_prepare_inode_for_write(struct dentry *dentry,
break;
}
+ if (has_refcount && *has_refcount == 1) {
+ *direct_io = 0;
+ break;
+ }
/*
* Allowing concurrent direct writes means
* i_size changes wouldn't be synchronized, so
@@ -1899,7 +1906,7 @@ static ssize_t ocfs2_file_aio_write(struct kiocb *iocb,
loff_t pos)
{
int ret, direct_io, appending, rw_level, have_alloc_sem = 0;
- int can_do_direct;
+ int can_do_direct, has_refcount = 0;
ssize_t written = 0;
size_t ocount; /* original count */
size_t count; /* after file limit checks */
@@ -1942,7 +1949,7 @@ relock:
can_do_direct = direct_io;
ret = ocfs2_prepare_inode_for_write(file->f_path.dentry, ppos,
iocb->ki_left, appending,
- &can_do_direct);
+ &can_do_direct, &has_refcount);
if (ret < 0) {
mlog_errno(ret);
goto out;
@@ -2006,14 +2013,16 @@ 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_DSYNC && !direct_io) || IS_SYNC(inode)) {
+ if (((file->f_flags & O_DSYNC) && !direct_io) || IS_SYNC(inode) ||
+ ((file->f_flags & O_DIRECT) && has_refcount)) {
ret = filemap_fdatawrite_range(file->f_mapping, pos,
pos + count - 1);
if (ret < 0)
written = ret;
if (!ret && (old_size != i_size_read(inode) ||
- old_clusters != OCFS2_I(inode)->ip_clusters)) {
+ old_clusters != OCFS2_I(inode)->ip_clusters ||
+ has_refcount)) {
ret = jbd2_journal_force_commit(osb->journal->j_journal);
if (ret < 0)
written = ret;
@@ -2024,7 +2033,7 @@ out_dio:
pos + count - 1);
}
- /*
+ /*
* 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
* it can unlock our rw lock. (it's the clustered equivalent of
@@ -2062,7 +2071,7 @@ static int ocfs2_splice_to_file(struct pipe_inode_info *pipe,
int ret;
ret = ocfs2_prepare_inode_for_write(out->f_path.dentry, &sd->pos,
- sd->total_len, 0, NULL);
+ sd->total_len, 0, NULL, NULL);
if (ret < 0) {
mlog_errno(ret);
return ret;
@@ -2189,7 +2198,7 @@ static ssize_t ocfs2_file_aio_read(struct kiocb *iocb,
goto bail;
}
- /*
+ /*
* buffered reads protect themselves in ->readpage(). O_DIRECT reads
* need locks to protect pending reads from racing with truncate.
*/
@@ -2211,10 +2220,10 @@ static ssize_t ocfs2_file_aio_read(struct kiocb *iocb,
* We're fine letting folks race truncates and extending
* writes with read across the cluster, just like they can
* locally. Hence no rw_lock during read.
- *
+ *
* Take and drop the meta data lock to update inode fields
* like i_size. This allows the checks down below
- * generic_file_aio_read() a chance of actually working.
+ * generic_file_aio_read() a chance of actually working.
*/
ret = ocfs2_inode_lock_atime(inode, filp->f_vfsmnt, &lock_level);
if (ret < 0) {
@@ -2239,7 +2248,7 @@ static ssize_t ocfs2_file_aio_read(struct kiocb *iocb,
bail:
if (have_alloc_sem)
up_read(&inode->i_alloc_sem);
- if (rw_level != -1)
+ if (rw_level != -1)
ocfs2_rw_unlock(inode, rw_level);
mlog_exit(ret);
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