#include <linux/ext2_fs.h>
#include <linux/crc32.h>
#include <linux/lm_interface.h>
+#include <linux/writeback.h>
#include <asm/uaccess.h>
#include "gfs2.h"
* @file: the file that points to the dentry (we ignore this)
* @dentry: the dentry that points to the inode to sync
*
+ * The VFS will flush "normal" data for us. We only need to worry
+ * about metadata here. For journaled data, we just do a log flush
+ * as we can't avoid it. Otherwise we can just bale out if datasync
+ * is set. For stuffed inodes we must flush the log in order to
+ * ensure that all data is on disk.
+ *
* Returns: errno
*/
static int gfs2_fsync(struct file *file, struct dentry *dentry, int datasync)
{
- struct gfs2_inode *ip = GFS2_I(dentry->d_inode);
+ struct inode *inode = dentry->d_inode;
+ int sync_state = inode->i_state & (I_DIRTY_SYNC|I_DIRTY_DATASYNC);
+ int ret = 0;
+ struct writeback_control wbc = {
+ .sync_mode = WB_SYNC_ALL,
+ .nr_to_write = 0,
+ };
+
+ if (gfs2_is_jdata(GFS2_I(inode))) {
+ gfs2_log_flush(GFS2_SB(inode), GFS2_I(inode)->i_gl);
+ return 0;
+ }
- gfs2_log_flush(ip->i_gl->gl_sbd, ip->i_gl);
+ if (sync_state != 0) {
+ if (!datasync)
+ ret = sync_inode(inode, &wbc);
- return 0;
+ if (gfs2_is_stuffed(GFS2_I(inode)))
+ gfs2_log_flush(GFS2_SB(inode), GFS2_I(inode)->i_gl);
+ }
+
+ return ret;
}
/**