Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=1031be7a5fafd3a858dfaabb74d98f9ca20744a8
Commit: 1031be7a5fafd3a858dfaabb74d98f9ca20744a8
Parent: 3eda22d19b76b15ef3420b251bd47a0ba0127589
Author: NeilBrown <[EMAIL PROTECTED]>
AuthorDate: Fri Jan 26 00:57:02 2007 -0800
Committer: Linus Torvalds <[EMAIL PROTECTED]>
CommitDate: Fri Jan 26 13:50:59 2007 -0800
[PATCH] md: make sure the events count in an md array never returns to zero
Now that we sometimes step the array events count backwards (when
transitioning dirty->clean where nothing else interesting has happened - so
that we don't need to write to spares all the time), it is possible for the
event count to return to zero, which is potentially confusing and triggers
and
MD_BUG.
We could possibly remove the MD_BUG, but is just as easy, and probably
safer,
to make sure we never return to zero.
Signed-off-by: Neil Brown <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]>
---
drivers/md/md.c | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/drivers/md/md.c b/drivers/md/md.c
index d1cb45f..ec3d8e8 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -1633,7 +1633,8 @@ repeat:
* and 'events' is odd, we can roll back to the previous clean state */
if (nospares
&& (mddev->in_sync && mddev->recovery_cp == MaxSector)
- && (mddev->events & 1))
+ && (mddev->events & 1)
+ && mddev->events != 1)
mddev->events--;
else {
/* otherwise we have to go forward and ... */
-
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