[XFS] Make freeze code a little cleaner.
Fixes a few small issues (mostly cosmetic) that were picked up during the
review cycle for the last set of freeze path changes.
SGI-PV: 959267
SGI-Modid: xfs-linux-melb:xfs-kern:28035a
Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Tim Shimmin <tes@sgi.com>
diff --git a/fs/xfs/xfs_vfsops.c b/fs/xfs/xfs_vfsops.c
index c2a6eab..29f72f6 100644
--- a/fs/xfs/xfs_vfsops.c
+++ b/fs/xfs/xfs_vfsops.c
@@ -872,10 +872,10 @@
* this by simply making sure the log gets flushed
* if SYNC_BDFLUSH is set, and by actually writing it
* out otherwise.
- * SYNC_DIO_WAIT - The caller wants us to wait for all direct I/Os
- * as well to ensure all data I/O completes before we
- * return. Forms the drain side of the write barrier needed
- * to safely quiesce the filesystem.
+ * SYNC_IOWAIT - The caller wants us to wait for all data I/O to complete
+ * before we return (including direct I/O). Forms the drain
+ * side of the write barrier needed to safely quiesce the
+ * filesystem.
*
*/
/*ARGSUSED*/
@@ -1174,10 +1174,11 @@
}
/*
- * When freezing, we need to wait ensure direct I/O is complete
- * as well to ensure all data modification is complete here
+ * When freezing, we need to wait ensure all I/O (including direct
+ * I/O) is complete to ensure no further data modification can take
+ * place after this point
*/
- if (flags & SYNC_DIO_WAIT)
+ if (flags & SYNC_IOWAIT)
vn_iowait(vp);
if (flags & SYNC_BDFLUSH) {
@@ -1975,7 +1976,7 @@
/* flush inodes and push all remaining buffers out to disk */
xfs_quiesce_fs(mp);
- BUG_ON(atomic_read(&mp->m_active_trans) > 0);
+ ASSERT_ALWAYS(atomic_read(&mp->m_active_trans) == 0);
/* Push the superblock and write an unmount record */
xfs_log_unmount_write(mp);