提交 d23c937b 编写于 作者: J Jan Kara

ocfs2: Update syncing after splicing to match generic version

Update ocfs2 specific splicing code to use generic syncing helper. The sync now
does not happen under rw_lock because generic_write_sync() acquires i_mutex
which ranks above rw_lock. That should not matter because standard fsync path
does not hold it either.
Acked-by: NJoel Becker <Joel.Becker@oracle.com>
Acked-by: NMark Fasheh <mfasheh@suse.com>
CC: ocfs2-devel@oss.oracle.com
Signed-off-by: NJan Kara <jack@suse.cz>
上级 ebbbf757
......@@ -1993,31 +1993,16 @@ static ssize_t ocfs2_file_splice_write(struct pipe_inode_info *pipe,
if (ret > 0) {
unsigned long nr_pages;
int err;
*ppos += ret;
nr_pages = (ret + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT;
/*
* If file or inode is SYNC and we actually wrote some data,
* sync it.
*/
if (unlikely((out->f_flags & O_SYNC) || IS_SYNC(inode))) {
int err;
mutex_lock(&inode->i_mutex);
err = ocfs2_rw_lock(inode, 1);
if (err < 0) {
mlog_errno(err);
} else {
err = generic_osync_inode(inode, mapping,
OSYNC_METADATA|OSYNC_DATA);
ocfs2_rw_unlock(inode, 1);
}
mutex_unlock(&inode->i_mutex);
err = generic_write_sync(out, *ppos, ret);
if (err)
ret = err;
else
*ppos += ret;
if (err)
ret = err;
}
balance_dirty_pages_ratelimited_nr(mapping, nr_pages);
}
......
Markdown is supported
0% .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑!
想要评论请 注册