From: Brian Behlendorf <behlendorf1@llnl.gov>
Date: Sat, 5 Feb 2011 00:54:34 +0000 (-0800)
Subject: Invalidate dcache and inode cache
X-Git-Tag: zfs-0.6.0-rc1~1^2~21
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=ceb43b935d6c4f4f6509623c7498d5dcc40ea813;p=zfs

Invalidate dcache and inode cache

When performing a 'zfs rollback' it's critical to invalidate
the previous dcache and inode cache.  If we don't there will
stale cache entries which when accessed will result in EIOs.
---

diff --git a/module/zfs/zfs_vfsops.c b/module/zfs/zfs_vfsops.c
index 1763d171a..bb2fdb029 100644
--- a/module/zfs/zfs_vfsops.c
+++ b/module/zfs/zfs_vfsops.c
@@ -1071,17 +1071,17 @@ zfsvfs_teardown(zfs_sb_t *zsb, boolean_t unmounting)
 
 	rrw_enter(&zsb->z_teardown_lock, RW_WRITER, FTAG);
 
-#ifdef HAVE_DNLC
 	if (!unmounting) {
 		/*
-		 * We purge the parent filesystem's vfsp as the parent
-		 * filesystem and all of its snapshots have their vnode's
-		 * v_vfsp set to the parent's filesystem's vfsp.  Note,
-		 * 'z_parent' is self referential for non-snapshots.
+		 * We purge the parent filesystem's super block as the
+		 * parent filesystem and all of its snapshots have their
+		 * inode's super block set to the parent's filesystem's
+		 * super block.  Note,  'z_parent' is self referential
+		 * for non-snapshots.
 		 */
-		(void) dnlc_purge_vfsp(zsb->z_parent->z_vfs, 0);
+		shrink_dcache_sb(zsb->z_parent->z_sb);
+		invalidate_inodes(zsb->z_parent->z_sb);
 	}
-#endif /* HAVE_DNLC */
 
 	/*
 	 * Close the zil. NB: Can't close the zil while zfs_inactive