search for: ocfs_file_open

...s the inadequate inode page cache cleaning when open or close the last reference to an inode. In routine ocfs_file_release(), if the caller is the last reference to this inode, truncate_inode_page is called to invalidate all page caches of this inode after the reference is closed. And in routine ocfs_file_open(), the page caches are also cleaned when this inode is first opened. In this case, the file reading operation always read data from the disk directly, which throughput is only 16M bytes/sec on our development machine. But, if we try to bypass the call to truncate_inode_page(), the file reading th...

...times improvement on file reading throughput. >> >> We will submit the full benchmark data of izone in the other=20 >> >mail soon. >> >>=20 >> >> In our patch, we remove ocfs_truncate_pages() and >> >> ocfs_extent_map_destroy() from routine ocfs_file_open() and >> >> ocfs_file_release(), which enable file data page reuse=20 >> >between different >> >> and sequential file access in one node.=20 >> >>=20 >> >> In current OCFS2 design, file data consistency among all nodes >> >> in t...