Avoid references to 'pe->primary_pe' after freeing 'pe'.
Signed-Off-By: Alasdair G Kergon <[email protected]>
Index: linux-2.6.16-rc1/drivers/md/dm-snap.c
===================================================================
--- linux-2.6.16-rc1.orig/drivers/md/dm-snap.c 2006-02-06 23:18:03.000000000 +0000
+++ linux-2.6.16-rc1/drivers/md/dm-snap.c 2006-02-06 23:18:44.000000000 +0000
@@ -651,6 +651,7 @@ static void __invalidate_snapshot(struct
static void pending_complete(struct pending_exception *pe, int success)
{
struct exception *e;
+ struct pending_exception *primary_pe;
struct dm_snapshot *s = pe->snap;
struct bio *flush = NULL;
@@ -702,18 +703,20 @@ static void pending_complete(struct pend
flush_bios(bio_list_get(&pe->snapshot_bios));
out:
+ primary_pe = pe->primary_pe;
+
/*
* Free the pe if it's not linked to an origin write or if
* it's not itself a primary pe.
*/
- if (!pe->primary_pe || pe->primary_pe != pe)
+ if (!primary_pe || primary_pe != pe)
free_pending_exception(pe);
/*
* Free the primary pe if nothing references it.
*/
- if (pe->primary_pe && !atomic_read(&pe->primary_pe->sibling_count))
- free_pending_exception(pe->primary_pe);
+ if (primary_pe && !atomic_read(&primary_pe->sibling_count))
+ free_pending_exception(primary_pe);
if (flush)
flush_bios(flush);
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
