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Once all block address modifications are done invalidate and 

free all pages from the snapshot vnode.
This commit is contained in:
hannken 2004-05-31 13:28:53 +00:00
parent 4d9e630e22
commit 7b03a4b40c
1 changed files with 11 additions and 1 deletions
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12
sys/ufs/ffs/ffs_snapshot.c
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@ -36,7 +36,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: ffs_snapshot.c,v 1.2 2004/05/26 11:17:39 hannken Exp $");
__KERNEL_RCSID(0, "$NetBSD: ffs_snapshot.c,v 1.3 2004/05/31 13:28:53 hannken Exp $");
#include <sys/param.h>
#include <sys/kernel.h>
@ -563,6 +563,16 @@ out1:
error = expunge_ufs1(vp, ip, copy_fs, mapacct_ufs1, BLK_SNAP);
else
error = expunge_ufs2(vp, ip, copy_fs, mapacct_ufs2, BLK_SNAP);
/*
* All block address modifications are done. Invalidate and free
* all pages on the snapshot vnode. Those coming from read ahead
* are no longer valid.
*/
if (!error) {
simple_lock(&vp->v_interlock);
error = VOP_PUTPAGES(vp, 0, 0,
PGO_ALLPAGES|PGO_CLEANIT|PGO_SYNCIO|PGO_FREE);
}
if (error) {
fs->fs_snapinum[snaploc] = 0;
FREE(snapblklist, M_UFSMNT);