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Commit 6307daad authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jlbec/ocfs2 

* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jlbec/ocfs2:
  ocfs2: Handle O_DIRECT when writing to a refcounted cluster.
parents f843b0fc 86470e98

fs/ocfs2/file.c

+15 −6
Original line number Diff line number Diff line
@@ -1772,7 +1772,8 @@ 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;
@@ -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;
@@ -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;